chore(ci): resync dependency lock — multidict 6.7.1 → 6.8.0 (upstream release drift)

Same contract as the platformdirs resync: the lock pins a version that a fresh resolve no longer produces. Regenerated per check_dep_lock's own instruction. Pre-existing master drift, gates this PR.
feat(OBS-1): StageAttempt telemetry — per-attempt lifecycle, observational invariant (closes #287 )
2026-09-09 16:53:14 +01:00 · 2026-09-09 16:48:26 +01:00 · 2026-09-09 14:02:42 +01:00 · 2026-09-09 14:02:39 +01:00 · 2026-09-09 14:02:36 +01:00 · 2026-09-09 14:02:34 +01:00
81 changed files with 9756 additions and 1513 deletions
@@ -1,46 +0,0 @@
-name: Research backlog sweep
-
-# One-time (repeatable, idempotent) research-pending backfill for the standing
-# backlog (#204 second slice). The gate labels only on ready EVENTS; issues
-# that predate it were never labeled → never researched. This workflow runs
-# scripts/research_backfill_sweep.py with the gate's own semantics:
-#   eligible = open, not blocked, not already research-pending,
-#              NO existing 4-phase research round (already-done stays done),
-#              all Depends-on server-verified closed.
-# Dry-run by default (comments the eligible set on nothing, prints to log);
-# workflow_dispatch with apply=true performs the labeling. Each application
-# fires the research stage (label event) — so apply is the ON switch for
-# backlog research.
-
-on:
-  workflow_dispatch:
-    inputs:
-      apply:
-        description: "Apply labels (omit = dry-run report only)"
-        required: false
-        default: "false"
-
-permissions:
-  issues: write
-  contents: read
-
-jobs:
-  sweep:
-    runs-on: rune-ci-desktop
-    steps:
-      - name: Check out master
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
-        with:
-          fetch-depth: 0
-
-      - name: Run sweep
-        env:
-          GITEA_TOKEN: ${{ secrets.ROBOT_TOKEN }}
-          SERVER: ${{ gitea.server_url }}
-          APPLY: ${{ gitea.event.inputs.apply || 'false' }}
-        run: |
-          ARGS="sweep --base $SERVER/api/v1/repos/conductor/rune --token $GITEA_TOKEN"
-          if [ "$APPLY" = "true" ]; then
-            ARGS="$ARGS --apply"
-          fi
-          python3 scripts/research_backfill_sweep.py $ARGS
@@ -1,47 +0,0 @@
-name: Research dispatcher
-
-# P0 dispatch reliability fix: the label-event if-condition
-# (gitea.event.label.name == 'research-pending') silently fails when labels
-# are applied via the API (Gitea 1.27 payload quirk). This dispatcher:
-#   1. Triggers on ANY issues.labeled event
-#   2. Checks the label via the API (deterministic, no payload parsing)
-#   3. Dispatches the research stage via workflow_dispatch (proven path)
-#
-# §1 doctrine: "A forge state transition that requires cognition must
-# explicitly dispatch cognition. Labels do not think."
-
-on:
-  issues:
-    types: [labeled]
-
-permissions:
-  issues: read
-  actions: write
-
-jobs:
-  dispatch:
-    runs-on: rune-ci-desktop
-    steps:
-      - name: Check label and dispatch research stage
-        env:
-          GITEA_TOKEN: ${{ secrets.ROBOT_TOKEN }}
-          SERVER: ${{ gitea.server_url }}
-          ISSUE_NUMBER: ${{ gitea.event.issue.number }}
-          LABEL_NAME: ${{ gitea.event.label.name }}
-        run: |
-          # The event payload's label object is NULL when labels are applied
-          # via the API (Gitea 1.27 quirk). Query the API for ground truth.
-          HAS_RP=$(curl -sf "$SERVER/api/v1/repos/conductor/rune/issues/$ISSUE_NUMBER/labels" \
-            -H "Authorization: token $GITEA_TOKEN" | \
-            python3 -c "import json,sys; labels=json.load(sys.stdin); print('yes' if any(l['name']=='research-pending' for l in labels) else 'no')")
-          if [ "$HAS_RP" != "yes" ]; then
-            echo "issue #$ISSUE_NUMBER: research-pending not present — skip"
-            exit 0
-          fi
-          echo "research-pending detected on issue #$ISSUE_NUMBER — dispatching research stage"
-          curl -sf -X POST \
-            "$SERVER/api/v1/repos/conductor/rune/actions/workflows/research-stage-headless.yml/dispatches" \
-            -H "Authorization: token $GITEA_TOKEN" \
-            -H "Content-Type: application/json" \
-            -d "{\"ref\":\"master\",\"inputs\":{\"issue_number\":\"$ISSUE_NUMBER\",\"round\":\"1\"}}"
-          echo "research stage dispatched"
@@ -1,49 +0,0 @@
-name: Research stage (event-driven)
-
-# CORRECTED EXECUTION MODEL:
-# Gitea triggers and ratifies. Rune/MiMo performs cognition. The TUI shows the live process.
-#
-# DEFINE is DETERMINISTIC (contract compilation from the issue).
-# INWARD uses the deterministic context builder + bounded MiMo only if needed.
-# Later stages will be migrated to this model.
-#
-# This workflow runs ONE stage per dispatch. Gitea Actions is the TRIGGER.
-# The LOCAL research backend (scripts/research_backend.py) does the cognition.
-
-on:
-  issues:
-    types: [labeled]
-  workflow_dispatch:
-    inputs:
-      issue_number:
-        description: "Issue to research"
-        required: true
-      stage:
-        description: "Stage to execute (DEFINE/INWARD/etc)"
-        required: false
-        default: "DEFINE"
-
-permissions:
-  issues: read
-  contents: write
-
-jobs:
-  research-stage:
-    runs-on: rune-ci-desktop
-    if: ${{ gitea.event.label.name == 'research-pending' || gitea.event_name == 'workflow_dispatch' }}
-    steps:
-      - name: Check out master
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
-        with:
-          fetch-depth: 0
-
-      - name: Execute research stage (local MiMo)
-        env:
-          ISSUE_NUMBER: ${{ gitea.event.inputs.issue_number || gitea.event.issue.number }}
-          STAGE: ${{ gitea.event.inputs.stage || 'DEFINE' }}
-          GITEA_TOKEN: ${{ secrets.ROBOT_TOKEN }}
-          SERVER: ${{ gitea.server_url }}
-        run: |
-          python3 scripts/research_backend.py \
-            --issue "$ISSUE_NUMBER" \
-            --round 1
@@ -1,6 +1,6 @@
 # Rune

-**Current release: v0.55.0**
+**Current release: v0.58.1**

 **Rune is a persistent personal agent designed to accumulate experience, develop reusable competence, and remain recognisably the same agent even when its underlying foundation model changes.**

@@ -0,0 +1 @@
+{"success":true,"data":{"web":[{"url":"https://news.ycombinator.com/item?id=31473373","title":"I've yet to see how you can use SQLite for a multi-user multi-write app ...","description":"SQLite doesn't support concurrent writers. In WAL mode it can handle a single writer with concurrent readers. In \"vanilla\" mode, a writer requires exclusive ...","position":1},{"url":"https://sqlite.org/forum/info/b4e8b29ae409cd198652c6b7e70b53b702f269e67e1d2573d627feeba37bbf85","title":"Multiple Writers - SQLite User Forum","description":"# Multiple Writers\n### (1) By [pyarlath](https://sqlite.org/forum/timeline?ss=v&y=f&vfx&u=pyarlath) on 2025-01-03 08:35:02 [[link]](https://sqlite.org/forum/forumpost/7fb8bf206005d943) [[source]](https://sqlite.org/forum/forumpost/7fb8bf206005d943?raw)\n```\nI am new to this forum, so please be adjusting of me if i ask some noob level questions.\n\nWhy cant sqlite have multiple writers?\n\nMy theoretical understanding is if you open a file in append only mode by 2 process, each process can append data without overwriting each other, now i further understand the support for append is weak in other systems apart from linux or may even differ, but then whats stopping to write a module with shared memory or file or something equivalent to maintain a counter and allocate exclusive space for different writers such that they dont overwrite each other in same file a little like MVCC but instead of version of same data its writing different data from different writers..\n\nI understand there will be more issues internal to sqlite to manage other ds but i feel they can managed with some clever solution, the real limitation should be file cannot accept multiple writer, but they do in an append only mode..\n\nDoes this click some thought?\n```\n\n### (4) By [pyarlath](https://sqlite.org/forum/timeline?ss=v&y=f&vfx&u=pyarlath) on 2025-01-03 13:14:00 in reply to [2.1](https://sqlite.org/forum/forumpost/6fda11b073) [[link]](https://sqlite.org/forum/forumpost/dcdf209b088e7f93) [[source]](https://sqlite.org/forum/forumpost/dcdf209b088e7f93?raw)\n```\nI may be wrong but as a DB system it should be able to provide multiple writers to a same sqlite file is my recommendation here, if to writers wants to update same at same time fine we should be able to give them that provision with complete data integrity, what meaning that data makes to them is app driven logic..\n\nI am talking here about lockless system like MVCC where updates to same row can be made by just appending to the file at the same time without any locks. So i think there is no illusion here its a well known practice in DB world... i feel\n```\n\n### (5) By [pyarlath](https://sqlite.org/forum/timeline?ss=v&y=f&vfx&u=pyarlath) on 2025-01-03 13:16:22 in reply to [3](https://sqlite.org/forum/forumpost/c36f1f8f03) [[link]](https://sqlite.org/forum/forumpost/b85a03da3c87e6ea) [[source]](https://sqlite.org/forum/forumpost/b85a03da3c87e6ea?raw)\n```\nNot sure why you thought of performance is what i am after, i am not my request was just like multiple process can read the same DB file, i wanted to understand what is the challenge to provide multiple writer? specially when systems like append-only data structures exists..\n```\n\n### (12) By [pyarlath](https://sqlite.org/forum/timeline?ss=v&y=f&vfx&u=pyarlath) on 2025-01-03 19:07:57 in reply to [11](https://sqlite.org/forum/forumpost/b4e8b29ae4) [[link]](https://sqlite.org/forum/forumpost/85cde6083d4c6102) [[source]](https://sqlite.org/forum/forumpost/85cde6083d4c6102?raw)\n```\nI never said I understand sqlite, infact I am noob like i said in the original first post.. but am a big fan of the embedded database strategy..\n\nTransactions in append only file formats are durable and also have order the append order..\n\nI am not asking for a coordinator process but all we need is to do is coordinate of the underlying file size and keep appending ie adding to it as a shared counter..\n\nI completely understand file format compatibility is number 1 priority, but we can always achieve the said by having extra file just like Wal which will be home for multiple writers and possible move data to sqlite format on periodic time..\n\nAgain my interest is in suggesting this concept of achieving multiple writer but the community can tell me if this a feasible idea..\n```\n\n### (15) By [pyarlath](https://sqlite.org/forum/timeline?ss=v&y=f&vfx&u=pyarlath) on 2025-01-04 11:24:41 in reply to [13](https://sqlite.org/forum/forumpost/388af122d9) [[link]](https://sqlite.org/forum/forumpost/f39edda8db7d11a5) [[source]](https://sqlite.org/forum/forumpost/f39edda8db7d11a5?raw)\n```\nThat's called snapshot, Each transaction starts with a snapshot[simply say file size here] so when final commit happens transaction just compares the snapshot[file size] if no data is mutated it remains same else it's changes and we can throw serialization error for the transaction..\n\nAgain all this is common practice in PG and other ACID comLine truncated
@@ -0,0 +1,62 @@
+# ResearchProcess code classification manifest (RP2/#265)
+
+Doctrine: detection may be aggressive; deletion must be conservative.
+This manifest classifies every research-execution code path. **RP11/#274 EXECUTED 2026-09-09** — RP10 proven (PR #279 merged); safe paths retired:
+`research_backend.py` (run_full_research self-walk + --watch), `run_research_stage.py`,
+`run_agent_stage.py` (+ its test), the three legacy research workflows, and the
+split-stage prompt templates. Retired stage names remain ONLY inside the
+RETIRED_STAGES guard that blocks them.
+
+Classifications: CURRENT | ADAPT | SUPERSEDED | COMPATIBILITY | TEST_FIXTURE | DEBUG_ONLY | UNKNOWN_PURPOSE
+
+## Canonical execution path (CURRENT)
+
+| Path | Role | Notes |
+|---|---|---|
+| `scripts/research_task_tree.py` | canonical stage model | ISSUE→INWARD→OUTWARD→APPLICABILITY→(INNOVATION)→ADVERSARIAL→SYNTHESIS→QUALIFY; RETIRED_STAGES guard; conditional INNOVATION routing |
+| `scripts/research_stage_executor.py` | one-stage executor | stage-trigger boundary, idempotency, placement gate wired into execute() |
+| `scripts/research_define.py` | ISSUE gate compiler | deterministic, needs_mimo hardwired False (compat shim) |
+| `scripts/research_inward_context.py` | INWARD context builder | deterministic + bounded MiMo flag |
+| `scripts/research_prompt_compiler.py` | stage prompt compiler | canonical templates incl. issue.md, applicability.md |
+| `scripts/research_event_relay.py` | event streaming | ResearchEventRelay, tool receipts |
+| `scripts/research_artifact.py` | artifact validation | structured-artifact gate |
+| `scripts/research_router.py` | OUTWARD routing | academic/software/web classification |
+| `scripts/runner_evidence.py` | placement evidence | runtime hostname/runner capture + Pi rejection gate |
+| `scripts/fake_worker.py` | TEST_FIXTURE | deterministic pipeline tests |
+| `prompts/research-stages/*.md` | stage templates | issue.md + applicability.md added RP2 |
+
+## SUPERSEDED (retire in RP11 after RP10 proof; DO NOT DELETE NOW)
+
+| Path | Superseded by | Classification | Evidence |
+|---|---|---|---|
+| `scripts/research_backend.py::run_full_research()` | one-stage-per-StageReady executor | RETIRED 2026-09-09 (self-walking loop, §26.6) | `while stage_count < max_stages` local advance loop; called by `--issue` CLI path and `--watch` loop |
+| `scripts/research_backend.py --watch` | Gitea-authorized StageReady events | RETIRED 2026-09-09 (poll-loop supervisor, §26.7) | `while True: gitea_api(...); time.sleep(POLL_INTERVAL)` — deterministic reconciliation only, but watches+launches whole processes rather than single stages |
+| `scripts/run_research_stage.py` | `research_stage_executor.py` | ADAPT → verify before RP3 | single ref from one workflow |
+| `scripts/run_agent_stage.py` | unified OUTWARD executor | UNKNOWN_PURPOSE | only self-referential test found; investigate in RP11 |
+| old stage names `DEFINE`/`OUTWARD_DISCOVERY`/`OUTWARD_READING` | ISSUE / unified OUTWARD | COMPATIBILITY (executor returns RETIRED_STAGE; advance raises) | cannot become READY through canonical path — regression-tested |
+| `prompts/research-stages/outward_discovery.md`, `outward_reading.md`, `define.md` | outward.md, issue.md | COMPATIBILITY (not routed by canonical compiler for new runs) | verify no dynamic selection in RP11 |
+| `.gitea/workflows/research-dispatcher.yml`, `research-stage-headless.yml` dispatch semantics | StageReady → desktop executor | ADAPT | runs-on: rune-ci-desktop already correct; stage input default `DEFINE` must move to `ISSUE` |
+
+## Issues classified as disposable acceptance history (26.8)
+
+- #245, #254, #255, #256, #260, #261, #262: `research-pending` trigger labels
+  removed 2026-09-08 (RP0) — no stale process can redispatch.
+- #263: closed+superseded with evidence note; artifacts preserved at
+  `/mnt/workdrive/research-stage/research/issue-263/`.
+
+## tui-restart-pending (legacy permission/restart mechanism)
+
+Classification: **SUPERSEDED CANDIDATE** (not removed).
+The pending restart procedure existed to fix permission flags for the OLD
+research dispatch flow. The corrected canonical path does not depend on it.
+Verify before RP11 removal that no current hook still reads the flag file.
+
+## RP11 acceptance checklist (carried forward from handoff §26.11)
+
+- one canonical authority per responsibility (stage model, StageReady,
+  execution, eligibility, artifact schema, gate, persistence, TUI
+  projection, runner placement, refinement routing)
+- no production self-walking loop; no foreground sleep/poll supervisor
+- no heavy-cognition path targeting the Pi
+- old stage names cannot become READY (already proven: test_retired_stages_cannot_become_ready)
+- one real progression issue still completes after cleanup
@@ -0,0 +1,188 @@
+{
+ "runs": {
+  "161": {
+   "issue": 161,
+   "stages": {
+    "ISSUE": {
+     "elapsed_s": 0.0,
+     "tool_calls": 0,
+     "queries": 0,
+     "sources_read": 0,
+     "tool_failures": 0
+    },
+    "INWARD": {
+     "elapsed_s": 0.0,
+     "tool_calls": 0,
+     "queries": 0,
+     "sources_read": 0,
+     "tool_failures": 0
+    },
+    "OUTWARD": {
+     "elapsed_s": 0.0,
+     "tool_calls": 22,
+     "queries": 4,
+     "sources_read": 4,
+     "tool_failures": 0
+    },
+    "APPLICABILITY": {
+     "elapsed_s": 0.0,
+     "tool_calls": 20,
+     "queries": 0,
+     "sources_read": 0,
+     "tool_failures": 0
+    },
+    "ADVERSARIAL": {
+     "elapsed_s": 0.0,
+     "tool_calls": 25,
+     "queries": 0,
+     "sources_read": 2,
+     "tool_failures": 0
+    },
+    "SYNTHESIS": {
+     "elapsed_s": 0.0,
+     "tool_calls": 14,
+     "queries": 0,
+     "sources_read": 0,
+     "tool_failures": 1
+    },
+    "QUALIFY": {
+     "elapsed_s": 310.1,
+     "tool_calls": 20,
+     "queries": 0,
+     "sources_read": 0,
+     "tool_failures": 0
+    }
+   },
+   "totals": {
+    "cognition_elapsed_s": 310.1,
+    "tool_calls": 101
+   },
+   "research": {
+    "queries": 4,
+    "sources_discovered": 16,
+    "sources_read": 4,
+    "contradictions": 4,
+    "limitations": 8
+   },
+   "adversarial": {
+    "attacks": 16,
+    "survivors": 6,
+    "rejected": 1,
+    "mitigations": 10,
+    "kill_tests": 7,
+    "disposition": "SURVIVES_WITH_MITIGATIONS"
+   }
+  },
+  "163": {
+   "issue": 163,
+   "stages": {
+    "ISSUE": {
+     "elapsed_s": 0.0,
+     "tool_calls": 0,
+     "queries": 0,
+     "sources_read": 0,
+     "tool_failures": 0
+    },
+    "INWARD": {
+     "elapsed_s": 0.0,
+     "tool_calls": 0,
+     "queries": 0,
+     "sources_read": 0,
+     "tool_failures": 0
+    },
+    "OUTWARD": {
+     "elapsed_s": 0.0,
+     "tool_calls": 34,
+     "queries": 5,
+     "sources_read": 10,
+     "tool_failures": 2
+    },
+    "APPLICABILITY": {
+     "elapsed_s": 300.1,
+     "tool_calls": 8,
+     "queries": 0,
+     "sources_read": 0,
+     "tool_failures": 0
+    },
+    "INNOVATION": {
+     "elapsed_s": 422.1,
+     "tool_calls": 9,
+     "queries": 0,
+     "sources_read": 0,
+     "tool_failures": 1
+    },
+    "ADVERSARIAL": {
+     "elapsed_s": 0.0,
+     "tool_calls": 25,
+     "queries": 0,
+     "sources_read": 0,
+     "tool_failures": 0
+    },
+    "SYNTHESIS": {
+     "elapsed_s": 677.1,
+     "tool_calls": 15,
+     "queries": 0,
+     "sources_read": 0,
+     "tool_failures": 0
+    },
+    "QUALIFY": {
+     "elapsed_s": 305.1,
+     "tool_calls": 12,
+     "queries": 0,
+     "sources_read": 0,
+     "tool_failures": 0
+    }
+   },
+   "totals": {
+    "cognition_elapsed_s": 1704.3,
+    "tool_calls": 103
+   },
+   "research": {
+    "queries": 5,
+    "sources_discovered": 45,
+    "sources_read": 10,
+    "contradictions": 4,
+    "limitations": 8
+   },
+   "adversarial": {
+    "attacks": 13,
+    "survivors": 4,
+    "rejected": 1,
+    "mitigations": 7,
+    "kill_tests": 6,
+    "disposition": "SURVIVES_WITH_MITIGATIONS"
+   }
+  }
+ },
+ "old_process_baseline": {
+  "foreground_sleep_per_batch_s": 300,
+  "batches_observed_in_rsc0_red": "N (300s x N while child productive)",
+  "wall_clock_issue_245_era": "hours (multiple restarts, no durable state)",
+  "source_receipts": "model-claimed only (no relay receipts)",
+  "read_provenance": "none \u2014 snippets counted as evidence"
+ },
+ "quality_outcomes": {
+  "161": {
+   "architectural_mistakes_prevented": [
+    "MemoryAdapter second protocol rejected (duplicate authority vs memory_selector registry)",
+    "Harness would have silently validated non-hybrid mode (A1: _embed degradation) \u2014 kill-test FT1 forced mode observability",
+    "Cache-pollution benchmark hazard (A4) \u2014 forced cache bypass invariants"
+   ],
+   "implementation_ambiguity_reduction": "QUALIFY 13/13 checks + source-verified interface review; implementation merged first try, 0 CI code failures (2 CI-contract failures were master debt)",
+   "rework": "1 REFINE loop none; implementation PR #279 merged without implementation rework"
+  },
+  "163": {
+   "architectural_mistakes_prevented": [
+    "External graph DB adoption blocked (3 candidates CONFLICTS_WITH_RUNE \u2014 would replace SQLite tier)",
+    "False bi-temporal claim corrected from code (graph_memory is transaction-time append) before synthesis",
+    "INN-1 filter formulation falsified (A2) \u2014 synthesis v2 corrected"
+   ],
+   "implementation_ambiguity_reduction": "QUALIFY round 1 caught 3 concrete interface gaps (DDL, parameter, alias ordering) \u2014 REFINE_SYNTHESIS fixed all in one loop",
+   "rework": "1 REFINE_SYNTHESIS loop (targeted, synthesis-only \u2014 no research restart)"
+  }
+ },
+ "comparison_principles": {
+  "cognition_vs_orchestration": "cognition = MiMo stage elapsed (measured where recorded); orchestration/wait = runner queue + CI latency \u2014 NOT attributed to the pipeline",
+  "wall_clock": "#161 research chain \u2248 75 min git-window (00:16\u219201:31) incl. live CI defect discovery/fixes; #163 persisted in one batch (stage elapsed recorded per-stage)"
+ }
+}
@@ -35,3 +35,11 @@ PR as the new workflow._
 ## Extending the pipeline

 New processes MUST be placed per **docs/pipeline-extension-guide.md** — placement question, event-delivery quirks (each learned by failure), and per-type checklists. Read it before adding anything.
+
+## Retired workflows (RP11/#274, 2026-09-09)
+
+`research-dispatcher.yml`, `research-stage-headless.yml`, `research-backlog-sweep.yml`
+were removed after RP10 proved the canonical Research-to-Build pipeline
+(epic #257). Their trigger label (`research-pending`) was stripped from all
+disposable issues on 2026-09-08 (RP0). Historical evidence retained in
+research/issue-* directories and closed issues (#245, #254-#256, #260-#263).
@@ -1,4 +1,4 @@
 {
-  "BLE001": 356,
-  "S110": 82
-}
+  "BLE001": 352,
+  "S110": 80
+}
@@ -16,6 +16,16 @@ search for failures, limitations, simpler alternatives, negative results
 ## You MUST NOT
 do NOT advocate for the preferred approach

+## Disposition (MANDATORY — top-level field)
+
+Your dossier MUST carry a top-level "disposition" field, exactly one of:
+- SURVIVES — leading candidate withstands attack; no blocking gaps
+- SURVIVES_WITH_MITIGATIONS — viable with explicit required_mitigations
+- EVIDENCE_DEFICIENT — key claims unsupported → targeted OUTWARD
+- APPLICABILITY_DEFICIENT — Rune-fit was mapped wrong → APPLICABILITY
+- INNOVATION_WARRANTED — standard options killed, credible combination exists
+- NO_VIABLE_CANDIDATE — everything killed → expand the candidate space
+
 ## Output
 Produce your stage artifact as structured text. End with:
 ```
@@ -0,0 +1,34 @@
+# Research Stage: APPLICABILITY — can this actually work in Rune?
+
+Given the ISSUE, INWARD, and OUTWARD artifacts, determine which researched
+mechanisms can realistically be built in Rune's actual architecture.
+
+## Inputs
+
+- Issue-gate contract
+- INWARD artifact (current Rune reality)
+- OUTWARD artifact (external evidence, unified discovery+reading subsections)
+
+## Task
+
+Classify each researched mechanism/candidate:
+
+- DIRECTLY_APPLICABLE
+- APPLICABLE_WITH_ADAPTATION
+- CONFLICTS_WITH_RUNE
+- TOO_COMPLEX_FOR_VALUE
+- INSUFFICIENT_EVIDENCE
+- PROMISING_FOR_INNOVATION
+
+For each viable candidate record: integration point, benefit, cost,
+architectural fit, authority implications, risks, required adaptation, evidence.
+
+This is where research becomes grounded in Rune instead of remaining an essay.
+
+## MUST NOT
+
+- You MUST NOT propose mechanisms with no evidence in the OUTWARD artifact.
+- You MUST NOT ignore conflicts with Rune's authority boundaries.
+- You MUST NOT skip cost/fit analysis for candidates you recommend.
+- You MUST NOT advance candidates classified INSUFFICIENT_EVIDENCE without
+  flagging the evidence gap for targeted refinement.
@@ -1,29 +0,0 @@
-# Research Stage: DEFINE
-
-## Process capsule
- Issue: {{ISSUE_NUMBER}}
- Round: {{ROUND}}
- Stage: DEFINE (of 8)
- Prior artifacts: {{PRIOR_ARTIFACTS}}
- Blocking unknowns: {{BLOCKING_UNKNOWNS}}
-
-## Your task
-Classify the research question. What type of research is needed? What are the sub-questions?
-
-## You MUST
-classify the question, identify sub-questions, define the expected artifact
-
-## You MUST NOT
-do NOT do any codebase analysis or web research yet
-
-## Output
-Produce your stage artifact as structured text. End with:
-```
-StageCompleted: DEFINE
-```
-
-If you cannot complete this stage, end with:
-```
-StageFailed: DEFINE
-Reason: <why>
-```
@@ -0,0 +1,25 @@
+# Research Stage: ISSUE — deterministic issue-quality gate (replaces DEFINE)
+
+The Gitea issue IS the authoritative statement of intent. There is no cognitive
+DEFINE stage and no model call in this stage. This stage only deterministically
+checks that the issue is buildable.
+
+## Inputs
+
+- Gitea issue body (GOAL / WHY / CURRENT PROBLEM / CONSTRAINTS / ACCEPTANCE)
+- Epic / child-issue links
+
+## Task
+
+1. Compile the research contract from the issue content (deterministic).
+2. Check required sections exist: GOAL, WHY, CONSTRAINTS, ACCEPTANCE.
+3. Classify question type and required stages from the contract.
+4. If the issue is underspecified, record the gap as an issue-quality problem —
+   do NOT invent missing definitions here.
+
+## MUST NOT
+
+- You MUST NOT call any model or perform semantic research in this stage.
+- You MUST NOT invent GOAL/WHY/ACCEPTANCE content the issue does not state.
+- You MUST NOT advance to INWARD if the issue-quality gate fails.
+- You MUST NOT treat this as the retired DEFINE cognitive stage.
@@ -0,0 +1,53 @@
+# Research Stage: OUTWARD
+
+## Process capsule
+- Issue: {{ISSUE_NUMBER}}
+- Round: {{ROUND}}
+- Stage: OUTWARD (of 7)
+- Prior artifacts: {{PRIOR_ARTIFACTS}}
+- Blocking unknowns: {{BLOCKING_UNKNOWNS}}
+
+## Your task
+Find and read enough reliable external evidence to answer the external research questions.
+
+## You MUST
+
+DISCOVERY:
+- Issue real searches (webfetch of search engines, documentation sites)
+- Preserve query/tool receipts
+- Identify candidate sources with stable IDs (O1, O2, ...)
+- Classify each source (official docs, GitHub, academic, blog)
+- Select a bounded relevant set for reading
+
+READING:
+- Actually fetch/read the selected sources
+- Extract evidence claims relevant to the subquestions
+- Record limitations and contradictions
+- Preserve source IDs and fetch/read receipts
+
+## You MUST NOT
+- Inspect unrelated Rune code
+- Design the Rune solution
+- Perform INNOVATION (that's the next stage)
+- Perform SYNTHESIS
+- Modify production code
+- Continue searching after the evidence requirement is satisfied
+- Treat search snippets as evidence (actually read the pages)
+
+## STOP CONDITION
+Stop when each required external subquestion has:
+- Adequate evidence, OR
+- Explicit contradictory evidence, OR
+- A named unresolved gap
+
+## Output
+Produce your stage artifact as structured text with:
+- DISCOVERY: queries issued, sources discovered with URLs
+- READING: sources actually read, evidence extracted
+- LIMITATIONS: what the sources don't cover
+- CONTRADICTIONS: where sources disagree
+
+End with:
+```
+StageCompleted: OUTWARD
+```
@@ -1,29 +0,0 @@
-# Research Stage: OUTWARD_DISCOVERY
-
-## Process capsule
- Issue: {{ISSUE_NUMBER}}
- Round: {{ROUND}}
- Stage: OUTWARD_DISCOVERY (of 8)
- Prior artifacts: {{PRIOR_ARTIFACTS}}
- Blocking unknowns: {{BLOCKING_UNKNOWNS}}
-
-## Your task
-Generate search strategies and discover prior art for this issue.
-
-## You MUST
-produce search queries, discover URLs, classify source types
-
-## You MUST NOT
-do NOT read full sources yet (that is OUTWARD_READING)
-
-## Output
-Produce your stage artifact as structured text. End with:
-```
-StageCompleted: OUTWARD_DISCOVERY
-```
-
-If you cannot complete this stage, end with:
-```
-StageFailed: OUTWARD_DISCOVERY
-Reason: <why>
-```
@@ -1,29 +0,0 @@
-# Research Stage: OUTWARD_READING
-
-## Process capsule
- Issue: {{ISSUE_NUMBER}}
- Round: {{ROUND}}
- Stage: OUTWARD_READING (of 8)
- Prior artifacts: {{PRIOR_ARTIFACTS}}
- Blocking unknowns: {{BLOCKING_UNKNOWNS}}
-
-## Your task
-Read the selected sources from OUTWARD_DISCOVERY. Extract claims and provenance.
-
-## You MUST
-read primary sources, extract claims with source IDs, note limitations
-
-## You MUST NOT
-do NOT generate new search queries (that is OUTWARD_DISCOVERY)
-
-## Output
-Produce your stage artifact as structured text. End with:
-```
-StageCompleted: OUTWARD_READING
-```
-
-If you cannot complete this stage, end with:
-```
-StageFailed: OUTWARD_READING
-Reason: <why>
-```
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"

 [project]
 name = "rune"
-version = "0.55.0"
+version = "0.58.1"
 description = "Rune — a stateful coding assistant with persistent memory, orchestration, and TUI"
 requires-python = ">=3.10"

@@ -56,7 +56,7 @@ mdit-py-plugins==0.6.1
    # via textual
 mdurl==0.1.2
    # via markdown-it-py
-multidict==6.7.1
+multidict==6.8.0
    # via
    #   aiohttp
    #   yarl
@@ -0,0 +1 @@
+consumed at 1788951395.044743
@@ -0,0 +1 @@
+consumed at 1788951877.631211
@@ -0,0 +1 @@
+consumed at 1788950449.0477326
@@ -0,0 +1 @@
+consumed at 1788950433.0232792
@@ -0,0 +1 @@
+consumed at 1788950467.3172934
@@ -0,0 +1 @@
+consumed at 1788956506.164559
@@ -0,0 +1 @@
+consumed at 1788955793.926691
@@ -0,0 +1,191 @@
+{
+  "stage": "ADVERSARIAL",
+  "issue": 163,
+  "round": 1,
+  "process_id": "research-163-r1",
+  "attacked": [
+    "C4",
+    "C5",
+    "C6",
+    "C9",
+    "INN-1"
+  ],
+  "surviving_candidates": [
+    {
+      "id": "C4",
+      "disposition": "SURVIVES_WITH_DOWNGRADE",
+      "note": "The claim 'implements E14's model 1:1' is contradicted by the code (attacks A1, A11): the tier is a transaction-time append log with same-triple supersession, NOT a bi-temporal model with automatic contradiction invalidation. The candidate survives as 'partially integrated'; downstream dossiers must not repeat the 1:1 characterization."
+    },
+    {
+      "id": "C5",
+      "disposition": "SURVIVES_ONLY_IN_CORRECTED_FORM",
+      "note": "AS-OF time-travel over preserved history is a real, low-cost capability \u2014 but the INN-1 filter formulation is falsified (attack A2). Survives only via mitigation M1: either write valid_until on supersede (one line) or implement transaction-time as-of (learned_at + superseded_by chain) and drop the valid-time half until a writer populates valid windows."
+    },
+    {
+      "id": "C6",
+      "disposition": "SURVIVES_CONDITIONAL",
+      "note": "Mechanism is sound and FTS5 is available (verified: sqlite 3.53.4 in this runtime). But the benefit chain is broken twice today: the production graph is EMPTY (attack A5) and graph recall is re-floored by memory_selector (attack A6). Survives only with the projection-rule framing (M3), selector-floor test (M4), and write-side sequencing (M5)."
+    },
+    {
+      "id": "C9",
+      "disposition": "SURVIVES_TRACK_ONLY",
+      "note": "Uncontested as a future lead; attacks A9/A10 only constrain its future form: DuckDB/Arrow analytics must be a rebuildable read-only projection of graph.sqlite, never a second store, and must never acquire independent write authority."
+    }
+  ],
+  "rejected_candidates": [
+    {
+      "id": "INN-1#temporal-filter-as-specified",
+      "reason": "REJECTED as literally specified \u2014 do NOT carry to SYNTHESIS. The filter 'valid_from <= t AND (valid_until IS NULL OR t < valid_until) AND learned_at <= t' applied to the current writer's data returns STALE SUPERSEDED FACTS as if believed: supersede (graph_memory.py:207-208) sets status/superseded_by but never valid_until, so superseded edges remain NULL-open on the valid axis and pass all three predicates for every t after their creation. An as-of query would return the superseded AND superseding edges of a contradiction simultaneously \u2014 presenting both sides of a contradiction as current knowledge, the exact failure the feature exists to prevent. C5 itself survives after rework (see surviving_candidates); this exact formulation does not. This is E29's documented NULL-as-open-ended pitfall realized in the proposal spec, not merely in hand-written Cypher."
+    }
+  ],
+  "attacks": [
+    {
+      "id": "A1",
+      "target_candidate": "C4",
+      "dimension": "contradicting_evidence + weak_assumptions",
+      "finding": "The 'bi-temporal' claim is schema-only. valid_until is NEVER written anywhere in the repo (grep over src/rune: appears only in DDL line 107, INSERT writing NULL at line 201, and SELECTs); status='expired' has no writer; and valid_from and learned_at are both set to the SAME now_iso() call in the single INSERT (lines 200-204). The live production DB confirms: 0 edges where valid_until IS NOT NULL, 0 where valid_from <> learned_at. The tier is a transaction-time-only append log with supersession \u2014 the valid-time axis of E14's model is declared but dead.",
+      "evidence": "graph_memory.py:107,200-204,207-208 (valid_until written NULL; valid_from=learned_at=ts); grep valid_until/superseded across src/rune (no writer); live DB receipt: read-only sqlite3 query against /mnt/workdrive/rune/memory/graph/graph.sqlite returned entities=0, aliases=0, edges=0, valid_until non-null=0, valid_from<>learned_at=0, superseded_by non-null=0",
+      "severity": "high"
+    },
+    {
+      "id": "A2",
+      "target_candidate": "C5 (via INN-1)",
+      "dimension": "failure_modes",
+      "finding": "As-of filter as specified returns stale superseded facts (see rejected_candidates for full mechanism). Concretely: seed 'Alice works_at Acme' at t1, contradict at t2>t1; query --as-of t3>t2. Both edges have valid_from=t<=t3, valid_until=NULL, learned_at<=t3 \u2014 both are returned. The time-travel capability would be wrong on its very first contradiction.",
+      "evidence": "graph_memory.py:200-204 (INSERT), :207-208 (supersede touches only status/superseded_by); INN-1 proposal filter quoted in innovation.json:13",
+      "severity": "critical"
+    },
+    {
+      "id": "A3",
+      "target_candidate": "C5",
+      "dimension": "simpler_alternative",
+      "finding": "A materially simpler option was skipped: transaction-time as-of only. Since the valid-time axis is degenerate (A1), the ONLY semantics the current data can express is 'what did we believe at time t', which is fully implementable from learned_at + the superseded_by chain (an edge is believed as-of t iff learned_at <= t AND NOT superseded-by-an-edge-with-learned_at <= t) \u2014 no schema change, no ambiguity. Alternatively a one-line write-side change (set valid_until=now on supersede in add_edge) makes INN-1's documented bitemporal filter correct for all future data, and backfill is free because the DB is empty. The proposal chose the formulation that requires an assumption (populated valid windows) nothing establishes.",
+      "evidence": "graph_memory.py:113 superseded_by column exists but no chain-walk helper anywhere in src/rune (grep superseded_by: writers at :207, readers only in abstraction.py, a different store)",
+      "severity": "high"
+    },
+    {
+      "id": "A4",
+      "target_candidate": "C5",
+      "dimension": "failure_modes (edge inputs)",
+      "finding": "--as-of user input breaks lexicographic timestamp comparison. Stored timestamps are now_iso() format: '+00:00' offset, timespec=seconds. A user-supplied '2026-01-01T00:00:00Z' or an offset like '-05:00' does not compare correctly as a bare string against stored values. The C8 rejection note ('string comparison is correct') is true only for the fixed producer; it does not extend to user-supplied comparison operands.",
+      "evidence": "graph_memory.py:78-79 (now_iso producer); C8 rationale in applicability.json:117",
+      "severity": "medium"
+    },
+    {
+      "id": "A5",
+      "target_candidate": "C6",
+      "dimension": "contradicting_evidence",
+      "finding": "The accepted OUTWARD dossier's own grounding shows Rune's graph surface is 'reachable by the curator directly' \u2014 but the live production graph is completely EMPTY (0 entities, 0 aliases, 0 edges, verified read-only). The claimed benefit 'Rune's entry point caps practical recall' is vacuous today: there is nothing to recall. The actual bottleneck is write-side adoption \u2014 curator.graph_write gates writes at strength<3 and maps free text through a fixed verb map (curator.py:1355-1388) \u2014 not read-layer resolution. Any Rune-local kill test of the lexical tier on real data returns trivially zero until the graph is populated.",
+      "evidence": "live DB receipt: /mnt/workdrive/rune/memory/graph/graph.sqlite, all counts 0 (read-only, 2026 session); curator.py:1355-1388 (graph_write gating + verb map)",
+      "severity": "high"
+    },
+    {
+      "id": "A6",
+      "target_candidate": "C6",
+      "dimension": "duplicate_authority",
+      "finding": "A second lexical-retrieval implementation. memory_store.py ALREADY runs FTS5 BM25 (+ sqlite-vec dense) hybrid retrieval with a calibrated floor (RECALL_MIN_SCORE=0.42); graph results reach the model only through memory_selector._graphs_recall, which re-floors every graph candidate via _lex_overlap_score against min_score (memory_selector.py:383-384). Adding FTS5 inside graph.sqlite creates a second BM25 index in a second file with its own tokenizer/ranking \u2014 a second source of truth for lexical retrieval \u2014 AND leaves the benefit chain broken at the selector: a typo term that the new FTS5 tier resolves can still be floored out at the selector (the 1/n_words fallback rescues only when _lex_overlap_score is falsy, not when it is low-but-nonzero). INN-1 never mentions the selector.",
+      "evidence": "memory_store.py:5-10,126-149,634-756 (existing FTS5+vec hybrid, RRF, floor); memory_selector.py:88,105-107,361-391 (_graphs_recall floor path); authority map config/v1_authority_map.json:120-150 (memory_selection -> ContextBroker.memory_selector, 'preserve memory stores')",
+      "severity": "high"
+    },
+    {
+      "id": "A7",
+      "target_candidate": "C6",
+      "dimension": "failure_modes (edge inputs / drift)",
+      "finding": "FTS5 over entities(name, summary) is partially vacuous and inherits alias ambiguity. summary is ALWAYS '' at entity creation (graph_memory.py:154) and no code path ever updates it (memory_consolidation.py:428-448 only reads) \u2014 the index effectively covers name+alias tokens only. Aliases are unique per (entity_id, alias), not globally: the same alias string may exist under two entities, and alias resolution picks LIMIT 1 with no ORDER BY (nondeterministic, graph_memory.py:228-231). FTS5 ranking over ambiguous aliases inherits and amplifies the ambiguity. Tokenizer choice is unspecified in the proposal.",
+      "evidence": "graph_memory.py:95-100 (aliases UNIQUE(entity_id,alias)), :147-155 (LIMIT 1 no ORDER BY; summary=''), memory_consolidation.py:428-448 (read-only over entities)",
+      "severity": "medium"
+    },
+    {
+      "id": "A8",
+      "target_candidate": "C6",
+      "dimension": "rune_constraint_violations",
+      "finding": "Contract/canary surface must be respected: contracts.py pins graph_memory.connect and graph_memory.stats as verified function contracts (contracts.py:233-240); canary_native.py exercises graph_memory.connect and resolve (canary_native.py:37,105); canary_p0_04.py bans 'graph_memory.resolve' inside the removed pipeline body. Adding FTS5 initialization inside connect() and new behavior in query() must keep the connect() contract signature and cannot trip the banned-step list. Low probability of violation, but it belongs in the mandatory test checklist, and the proposal omits it.",
+      "evidence": "contracts.py:233-240; canary_native.py:37,105; canary_p0_04.py:99-105",
+      "severity": "low"
+    },
+    {
+      "id": "A9",
+      "target_candidate": "C9",
+      "dimension": "duplicate_authority + rebuildable_projections_rule",
+      "finding": "As phrased ('analytics/aging tier beside graph.sqlite'), C9 risks becoming a second source of truth for graph data. It is constraint-compatible ONLY if the DuckDB/Arrow sidecar is a documented rebuildable read-only projection of graph.sqlite (derived index with a rebuild command, zero independent writes), consistent with how the repo treats projections elsewhere (ChannelView.messages as projection of ConversationStateRepository; orchestration projections rebuilt from durable events). Additionally, E22's Pgembed multi-writer element would break the memory tier's single-curator write authority \u2014 correctly flagged at applicability, must stay attached to any future design.",
+      "evidence": "applicability.json:133 (authority_implications flag); docs/conversation-state.md:103 (projection precedent); plans/2026-09-03-orchestration-foundation.md:655-700 (checkpointed rebuildable projection pattern)",
+      "severity": "medium"
+    },
+    {
+      "id": "A10",
+      "target_candidate": "C9",
+      "dimension": "weak_assumptions (conceded)",
+      "finding": "Concede the track-only disposition: Icebug's 8x PageRank is an affiliated benchmark (E23), the stack is roadmap-stage, and with the live graph at 0 rows no analytics or aging benefit is measurable at Rune's regime. No attack changes the disposition; the attacks only constrain the future form (A9).",
+      "evidence": "outward.json O24/E22-E23; live DB receipt (0 rows)",
+      "severity": "low"
+    },
+    {
+      "id": "A11",
+      "target_candidate": "C4",
+      "dimension": "weak_assumptions (overstated claim)",
+      "finding": "'Supersede-on-contradiction' is actually supersede-on-identical-triple: conflict detection keys on exact (subj_id, pred, obj_id) (graph_memory.py:184-186). A restatement with a differently-normalized object ('Acme Corp' vs 'Acme' resolving to distinct entities) or a different predicate produces a PARALLEL ACTIVE edge \u2014 no contradiction detected, no supersession, two conflicting active facts coexist. E14's 'automatic fact invalidation' does not hold 1:1. Also the module docstring advertises a 'superseded-by' CLI command (line 37) that main() does not implement (choices at 302-303) \u2014 dead doc.",
+      "evidence": "graph_memory.py:184-208, 37, 300-313; outward.json E14",
+      "severity": "medium"
+    },
+    {
+      "id": "A12",
+      "target_candidate": "C6",
+      "dimension": "failure_modes (load)",
+      "finding": "The write-amplification risk assessment targets the wrong bottleneck: add_edge already COMMITS PER CALL (graph_memory.py:213), so add-bulk of N edges is N fsyncs; FTS5 maintenance adds per-row work on top but the dominant cost is the per-row commit. If add-bulk latency matters, batching is the fix; the FTS5 regression threshold (~10%) may be unmeasurable against the existing noise. The kill test should measure FTS5 delta with commits held constant.",
+      "evidence": "graph_memory.py:213 (per-call commit), :334-354 (add-bulk loops add_edge)",
+      "severity": "low"
+    },
+    {
+      "id": "A13",
+      "target_candidate": "C5+C6 (INN-1)",
+      "dimension": "simpler_alternative (holistic)",
+      "finding": "The simpler, evidence-supported sequencing was skipped: (1) write-side population first (the graph is empty \u2014 A5), (2) the one-line valid_until-on-supersede fix (A3) which repairs the writer AND makes the as-of filter correct, (3) only then read-layer work, measured end-to-end through memory_selector. INN-1 proposes the read layer first on an empty store, with a filter that is wrong against the current writer.",
+      "evidence": "synthesis of A2, A3, A5",
+      "severity": "high"
+    }
+  ],
+  "critical_assumptions": [
+    "CA1: The graph becomes populated in ordinary use. Currently FALSE (live DB: 0 rows). All read-layer benefits are conditional on write-side adoption through curator.graph_write.",
+    "CA2: Valid-time windows become non-degenerate. Currently FALSE (valid_until never written; valid_from==learned_at on every insert). Bitemporal as-of filtering is unimplementable as specified until supersede writes valid_until or a writer populates windows.",
+    "CA3: All compared timestamps are lexicographically comparable \u2014 true for the fixed now_iso() producer but NOT for arbitrary user --as-of input without normalization.",
+    "CA4: Graph-recall benefit is measured END-TO-END through ContextBroker.memory_selector (which re-floors graph candidates at RECALL_MIN_SCORE=0.42), not at graph_memory.query's return boundary.",
+    "CA5: FTS5 is available in the deploy runtime \u2014 VERIFIED TRUE in this runtime (sqlite 3.53.4), and independently evidenced by memory_store.py's existing FTS5 usage.",
+    "CA6: Supersession chains are short and acyclic \u2014 superseded_by is a single pointer with no chain-walk helper; transaction-time as-of reconstruction must define behavior for chains (walk to terminal) and cycles (should be impossible by construction since superseded_by points at an older row, but nothing asserts it)."
+  ],
+  "required_mitigations": [
+    "M1 (blocks C5/INN-1 synthesis): Fix the temporal semantics before any AS-OF ships. Either (a) one-line write-side change \u2014 set valid_until=now on supersede in add_edge (graph_memory.py:206-208) \u2014 which makes the documented filter correct for all future data, with free backfill since the DB is empty; or (b) implement transaction-time as-of only: learned_at <= t AND (status='active' OR the superseding edge's learned_at > t), walking superseded_by to a terminal. Do NOT ship the INN-1 filter against the current writer (A2).",
+    "M2 (C5): Normalize --as-of input to the now_iso() format (UTC, '+00:00', second precision) before any string comparison; reject or convert 'Z'/offset forms.",
+    "M3 (C6): Frame the FTS5 index explicitly as a rebuildable projection of entities/aliases inside graph.sqlite, with a documented rebuild command and recorded tokenizer decision; de-duplicate alias matches with deterministic ordering (or fix global alias uniqueness) before BM25 ranks ambiguous aliases.",
+    "M4 (C6): Add a selector-floor interaction test: typo/paraphrase terms resolved by the FTS5 tier must either clear _graphs_recall's min_score floor or rely on the documented 1/n fallback \u2014 measure the benefit at ContextBroker.memory_selector output, not graph_memory.query output. Keep connect()/stats contract (contracts.py:233-240) and canary bans (canary_p0_04.py:99-105) in the checklist.",
+    "M5 (INN-1 sequencing): Write-side population precedes (or accompanies) read-layer work; otherwise kill tests execute on an empty graph and trivially return no-benefit (A5, T5).",
+    "M6 (C4 characterization): Downstream dossiers must describe the tier as 'transaction-time append log with same-triple supersession', not 'bi-temporal E14 1:1'; note that contradiction invalidation does not generalize across differently-normalized restatements (A11) and that the 'superseded-by' CLI documented at line 37 is unimplemented.",
+    "M7 (C9): Any future analytics/aging sidecar is constrained to rebuildable read-only projection of graph.sqlite with a rebuild command; no independent writes; Pgembed-style multi-writer elements remain incompatible with single-curator write authority."
+  ],
+  "new_research_gaps": [
+    "G1: Write-side yield: how many curator graph_write attempts survive the strength<3 gate and verb map in practice \u2014 determines when the graph becomes non-empty and whether read-layer work has anything to operate on.",
+    "G2: No retrieval-quality harness exists in the repo (latency benchmark only, per issue-161 applicability findings) \u2014 INN-1's '~30% paraphrase recall lift' kill-test threshold is unmeasurable without building one first.",
+    "G3: Alias ambiguity rate: frequency of the same alias string under multiple entities at realistic scale \u2014 determines whether LIMIT 1 resolution and FTS5 ranking need a uniqueness fix.",
+    "G4: Verify the graph source is actually registered and reachable in memory_selector.DEFAULT_SOURCES in the live path (the function exists at memory_selector.py:361-391; registration was not verified this session) \u2014 if the graph source is dormant, both INN-1 halves are moot regardless of graph population."
+  ],
+  "falsification_tests": [
+    "T1 (temporal, kills INN-1 filter as specified): Seed a contradiction pair (same triple, t1 < t2, distinct evidence/confidence via add). Query --as-of t_mid (t1<t_mid<t2) and --as-of t_end (>t2). Correct: at t_mid exactly edge-1; at t_end exactly edge-2. The INN-1 filter as written returns BOTH edges at t_end \u2014 FAIL \u2014 superseded edges are NULL-open on valid_until (A2).",
+    "T2 (temporal, validates M1a): After the valid_until-on-supersede fix, repeat T1: as-of t_end must return only edge-2; as-of t_mid only edge-1; as-of t0<t1 returns empty facts for that triple.",
+    "T3 (lexical, refined kill test): Seed >=100 entities with realistic names/aliases; run K held-out paraphrase/typo queries that exact/alias/substring miss. PASS only if the FTS5 tier resolves >=30% of them AND the resolved candidates survive _graphs_recall's floor end-to-end (measured at memory_selector output). Either sub-condition failing kills the lexical half.",
+    "T4 (lexical, write path): add-bulk 1,000 edges with FTS5 enabled vs disabled, commits held constant (batch both arms \u2014 A12). Latency regression >10% with no compensating T3 gain kills the tier.",
+    "T5 (population gate, kills INN-1 entirely): After M5 write-side sequencing, if the graph remains below a minimal activity threshold (e.g., <50 edges over N weeks of real use), both read-layer halves are moot and the conclusion reduces to NO_INNOVATION_WARRANTED for this issue.",
+    "T6 (as-of input robustness): Query --as-of with 'Z' suffix, '-05:00' offset, and fractional-second forms; correct behavior is normalization or explicit rejection \u2014 never a silent mis-ordered comparison (A4)."
+  ],
+  "receipts": {
+    "external_checks": "None required \u2014 the dossier plus repo evidence were decisive; no URLs fetched this stage.",
+    "local_verification": [
+      "src/rune/graph_memory.py read in full (416 lines); grep valid_until/superseded across src/rune (no valid_until writer, no 'expired' writer)",
+      "Live production DB /mnt/workdrive/rune/memory/graph/graph.sqlite inspected READ-ONLY: entities=0, aliases=0, edges=0, valid_until non-null=0, valid_from<>learned_at=0, superseded_by non-null=0",
+      "FTS5 availability verified in this runtime: CREATE VIRTUAL TABLE ... USING fts5 succeeds (sqlite 3.53.4)",
+      "config/v1_authority_map.json memory_selection block read (v1_owner ContextBroker.memory_selector; memory_store retain-authority; rune_operator.py:608-669 graph selection archive-candidate)",
+      "memory_store.py FTS5+sqlite-vec hybrid confirmed (lines 5-10, 126-149, 634-756); memory_selector._graphs_recall floor path confirmed (361-391)",
+      "contracts.py:233-240, canary_native.py:37/105, canary_p0_04.py:99-105 contract/canary constraints confirmed"
+    ]
+  },
+  "disposition": "SURVIVES_WITH_MITIGATIONS",
+  "disposition_note": "Derived from per-candidate verdicts (all SURVIVES* with required mitigations M1-M7); migrated post-run \u2014 prompt fix ensures future runs emit it natively."
+}
@@ -0,0 +1,160 @@
+{
+  "stage": "APPLICABILITY",
+  "issue": 163,
+  "round": 1,
+  "process_id": "research-163-r1",
+  "grounding": {
+    "inward_claims_used": ["I3", "I1", "I4", "I5"],
+    "rune_reality": "src/rune/graph_memory.py is Rune's entire graph surface: a headless SQLite tier at memory/graph/graph.sqlite (no external graph DB dependency). Schema (lines 101-116) already implements: bi-temporal edges (valid_from/valid_until + learned_at), supersede-never-delete with status/superseded_by, per-edge provenance (evidence/source), confidence-gated writes (strength<3 gated out), typed concept-mediated nodes, and alias-based entity resolution. Query is name/alias/substring entry point + BFS over status='active' edges.",
+    "load_bearing_fact": "The dossier's repo_grounding_note and Graphiti (E17) confirm temporal semantics live at the framework layer above any backend. Rune already occupies that layer over SQLite. Neo4j and FalkorDB would be backends BELOW a layer Rune already owns, and neither offers native temporal versioning (E27, E28) - Rune's schema is already ahead of both on the spike's titular dimension."
+  },
+  "candidates": [
+    {
+      "id": "C1",
+      "candidate": "Neo4j as replacement graph backend",
+      "source_ids": ["O1", "O2", "O38", "O41"],
+      "classification": "CONFLICTS_WITH_RUNE",
+      "integration_point": "Would replace src/rune/graph_memory.py's SQLite tier (memory/graph/graph.sqlite) with a server-backed Neo4j deployment reachable from curator.py / sleep_time.py.",
+      "benefit": "Deepest ecosystem, best planner on heavy aggregations (E3), mature tooling (E8).",
+      "cost": "Server + JVM process to operate; ~2.7GB heap for a 381K-node graph, ~5.2GB process RSS (E6) - two orders of magnitude above Rune's sub-1M-entity regime; 90ms cold start vs embedded alternatives (E4).",
+      "architectural_fit": "Poor. Rune is embedded/local-first with zero external service dependencies (I3: 'reachable by the sleep-time curator directly, no MCP dependency'). A networked JVM server reverses that posture. No source benchmarks Rune's single-node regime (dossier limitation #2).",
+      "authority_implications": "Introduces an external service and credentials into the memory tier; curator/sleep-time write authority would route through a network daemon instead of a local file.",
+      "risks": "Licensing (Community vs Enterprise constraints unevidenced, dossier limitation #5); no native temporal versioning - the spike's core dimension (E28-E30); migration cost for zero evidenced benefit at Rune's scale.",
+      "required_adaptation": "None - rejection is the correct disposition.",
+      "evidence": ["E2", "E3", "E4", "E6", "E8", "E27", "E28", "E29"]
+    },
+    {
+      "id": "C2",
+      "candidate": "FalkorDB as replacement graph backend",
+      "source_ids": ["O1", "O2", "O5", "O29", "O10"],
+      "classification": "CONFLICTS_WITH_RUNE",
+      "integration_point": "Would replace the SQLite tier; only embedded path is Graphiti's falkordblite extra (redislite-based, Python 3.12+) per E16.",
+      "benefit": "Strong concurrent throughput and low latency at scale (E2, E3, E9), implicit indexing (E5), GraphRAG positioning (E10).",
+      "cost": "Server-shaped: Redis 7.4 module, own container/ports, min 4GB RAM / 16GB recommended (E12, E25, E26). SSPLv1 core license (E25). Rust core rewrite (E11) resets part of the maturity story (dossier contradiction #3).",
+      "architectural_fit": "Poor. The headline advantages (6.7x throughput, p50/p99 wins) were measured on 381K-804K-element graphs under 8-32 thread concurrency (E1, E9) - not Rune's regime (single-node, sub-1M entities, agent-local). Vendor magnitudes are marketing-adjacent (dossier contradiction #1; O5 benchmark harness README unverifiable, E13).",
+      "authority_implications": "A Redis server in the memory path; even falkordblite drags in a redislite dependency and a Python 3.12 floor for a lateral move from SQLite.",
+      "risks": "RedisGraph lineage EOL'd Jan 2025 (dossier contradiction #3); no evidenced FalkorDB-native temporal features (dossier limitation #4); license incompatibility with Rune's MIT-family posture.",
+      "required_adaptation": "None - rejection is the correct disposition.",
+      "evidence": ["E1", "E2", "E3", "E5", "E9", "E10", "E11", "E12", "E13", "E16", "E25", "E26"]
+    },
+    {
+      "id": "C3",
+      "candidate": "LadybugDB as replacement graph backend",
+      "source_ids": ["O21", "O24", "O28"],
+      "classification": "INSUFFICIENT_EVIDENCE",
+      "integration_point": "Hypothetically the same slot as the SQLite tier (genuinely embedded, MIT, native FTS + vector index, ACID, E20).",
+      "benefit": "Best architectural fit of the three spiked backends: embedded, MIT, Cypher, FTS+vector built in (E20, E24).",
+      "cost": "Migration cost from a working SQLite schema for no evidenced capability gain at Rune's scale.",
+      "architectural_fit": "Good in shape, unproven in substance: young revival fork (start year 2025, tagged 'Revival Project'/'AI-Assisted', E24) whose upstream died once already (dossier contradiction #2); no Graphiti driver exists for it (dossier contradiction #4); no benchmark anywhere near Rune's regime (dossier limitation #2).",
+      "authority_implications": "None new (embedded, in-process) - but supply-chain risk of betting the memory tier on a single-maintainer fork.",
+      "risks": "Upstream mortality repeated; API instability during revival; the dossier contains zero evidence LadybugDB outperforms SQLite for Rune's workload - 'experimental' per the issue title itself.",
+      "required_adaptation": "Re-evaluate if Rune's graph ever exceeds SQLite's comfortable range or if LadybugDB matures (maintained release cadence, Graphiti/driver ecosystem support).",
+      "evidence": ["E20", "E21", "E24"]
+    },
+    {
+      "id": "C4",
+      "candidate": "Graphiti bi-temporal semantic model (validity windows, invalidate-not-delete, episode provenance)",
+      "source_ids": ["O10"],
+      "classification": "DIRECTLY_APPLICABLE",
+      "integration_point": "Already integrated: src/rune/graph_memory.py edges table (valid_from/valid_until/learned_at, status/superseded_by, evidence/source) implements E14's model 1:1, including supersede-on-contradiction (add_edge) and confidence-gated writes.",
+      "benefit": "Confirms the current design against the reference architecture; zero further work for the core semantic model.",
+      "cost": "Already sunk; none incremental.",
+      "architectural_fit": "Exact. The load-bearing fact (E17: Zep's engine decouples temporal semantics from storage) validates Rune's framework-over-SQLite layering (repo_grounding_note).",
+      "authority_implications": "None - write authority already vested in the curator via graph_memory's gated add path.",
+      "risks": "Drift: Rune's schema must keep tracking Graphiti's semantic evolution (e.g., transaction-time versioning if NEP-001-style immutability lands).",
+      "required_adaptation": "None for the model itself. Residual gap is query-side, not model-side (see C5).",
+      "evidence": ["E14", "E17", "E19"]
+    },
+    {
+      "id": "C5",
+      "candidate": "NEP-001 'AS OF' temporal query semantics (Phase 1 syntactic sugar over valid_from/valid_to convention)",
+      "source_ids": ["O41", "O38", "O10"],
+      "classification": "APPLICABLE_WITH_ADAPTATION",
+      "integration_point": "src/rune/graph_memory.py query() - add an --as-of <iso8601> parameter filtering edges by valid_from <= t < (valid_until || NULL-open) and learned_at <= t, instead of the current status='active'-only filter; BFS frontier unchanged.",
+      "benefit": "Time-travel queries over the history Rune already preserves (superseded edges) but cannot currently read - closing the exact gap NEP-001 documents (E29: convention is error-prone and does not compose; E30: Phase 1 is low complexity and delivers most of the value).",
+      "cost": "Low: one filter clause + CLI flag in a single 416-line module; SQLite already indexes subj_id/obj_id; half-open-interval logic is the only subtle part (NEP-001's documented pitfalls become a test checklist).",
+      "architectural_fit": "High. Rune already stores both temporal axes (valid time + learned_at = transaction-time proxy, E14), so AS-OF is pure read-layer work on an existing schema - no backend change, consistent with the framework-layer pattern Rune already follows.",
+      "authority_implications": "None. Read-only query-layer change; write authority untouched.",
+      "risks": "learned_at is a transaction-time proxy, not a real bitemporal system (NEP-001 defers true bitemporality as 'Very high' complexity, E30) - document as as-of-knowledge approximation; NULL-as-open-ended and <=/< pitfalls need explicit tests (E29).",
+      "required_adaptation": "Translate NEP-001's Cypher WHERE-convention into Python/SQLite parameterized filters over the existing edges table; keep active-status fast path as default.",
+      "evidence": ["E28", "E29", "E30", "E14", "E27"]
+    },
+    {
+      "id": "C6",
+      "candidate": "Hybrid retrieval entry point (semantic embeddings + BM25 keyword + graph traversal)",
+      "source_ids": ["O10", "O1"],
+      "classification": "APPLICABLE_WITH_ADAPTATION",
+      "integration_point": "src/rune/graph_memory.py query() entity resolution (lines 225-237: exact/alias/substring only) - add SQLite FTS5 index over entities(name, summary) + aliases(alias) as a lexical fallback tier before the LIKE last resort.",
+      "benefit": "Graphiti attributes its sub-second retrieval to hybrid entry (E18); Rune's entry point currently fails on paraphrase/typo unless substring matches, which caps the graph's practical recall regardless of BFS depth.",
+      "cost": "Moderate: FTS5 is in-process and dependency-free (fits embedded posture); requires index maintenance on entity/alias writes and a tokenizer decision. Full embedding tier deferred - would introduce model dependencies disproportionate to Rune's graph size.",
+      "architectural_fit": "Good with adaptation: keep the lexical tier only (BM25-equivalent via FTS5), skip the embedding tier. SQLite already hosts the graph, so the index lives in the same file - no new service, consistent with 'reachable by the curator directly'.",
+      "authority_implications": "Index writes stay inside graph_memory's own DB and its existing write path; no authority change.",
+      "risks": "FTS5 index/write amplification on add-bulk; BM25 ranking quality unevidenced for Rune's vocabulary (evidence is Graphiti's claim, not a Rune-regime measurement - dossier limitation #7).",
+      "required_adaptation": "Adapt from Graphiti's three-tier hybrid to a one-tier lexical hybrid over SQLite FTS5; entity lookup order becomes exact -> alias -> FTS5 BM25 -> substring.",
+      "evidence": ["E18", "E14"]
+    },
+    {
+      "id": "C7",
+      "candidate": "Graphiti pluggable driver architecture (Neo4jDriver/FalkorDriver/KuzuDriver/NeptuneDriver, custom-driver recipe)",
+      "source_ids": ["O10"],
+      "classification": "TOO_COMPLEX_FOR_VALUE",
+      "integration_point": "Would sit between graph_memory.py and sqlite3.",
+      "benefit": "Backend optionality (E16).",
+      "cost": "An abstraction layer for a single-backend system with a decided answer (C1-C3 all reject or defer backend swap).",
+      "architectural_fit": "Premature. Rune's framework-layer semantics (C4) already achieve the decoupling that matters (E17); a driver interface adds indirection with no second backend to plug.",
+      "authority_implications": "None material.",
+      "risks": "Interface churn; abstraction tax on a 416-line module that is currently trivially auditable.",
+      "required_adaptation": "Revisit only if a second backend becomes live (e.g., LadybugDB maturing, C3).",
+      "evidence": ["E16", "E17"]
+    },
+    {
+      "id": "C8",
+      "candidate": "Cypher temporal VALUE types (DATE/DATETIME/DURATION as property types)",
+      "source_ids": ["O38"],
+      "classification": "TOO_COMPLEX_FOR_VALUE",
+      "integration_point": "Edges' valid_from/valid_until/learned_at columns.",
+      "benefit": "Typed temporal arithmetic, timezone-aware comparisons (E27).",
+      "cost": "Rune already stores ISO-8601 UTC strings with a fixed now_iso() producer; string comparison is correct and lexicographically ordered for UTC ISO-8601. Typing buys nothing at this scale and Cypher types are not portable to SQLite anyway.",
+      "architectural_fit": "None - it is a Neo4j-engine feature, not a portable pattern.",
+      "authority_implications": "None.",
+      "risks": "None beyond wasted effort.",
+      "required_adaptation": "Not applicable.",
+      "evidence": ["E27"]
+    },
+    {
+      "id": "C9",
+      "candidate": "Ladybug Memory lakehouse stack (Pgembed + DuckDB columnar aging + Icebug analytics + LadybugDB store) as local-first memory substrate",
+      "source_ids": ["O24", "O28"],
+      "classification": "PROMISING_FOR_INNOVATION",
+      "integration_point": "Future: an analytics/aging tier beside memory/graph/graph.sqlite (DuckDB/Arrow reads of the SQLite graph) rather than a replacement of it.",
+      "benefit": "E22's vision - transactional multi-agent writes, automatic columnar migration of aging data, zero-copy graph analytics (Icebug PageRank: 8x networkit, E23, affiliated benchmark) - is a credible long-range direction for Rune's memory umbrellas (curator/sleep-time consolidation, I1/I4).",
+      "cost": "High and undated: roadmap-stage components (SparseTensors, GPU), affiliated-only benchmarks, and it chains to C3's immature store.",
+      "architectural_fit": "Directionally strong (local-first unified memory substrate for AI agents, E22) but architecturally premature for Rune's current sub-1M regime.",
+      "authority_implications": "A multi-writer embedded store (Pgembed) would change the memory tier's single-curator write authority - flag for any future design.",
+      "risks": "Vision-stage dependency; affiliated benchmarks (E23); inherits C3's fork-mortality risk.",
+      "required_adaptation": "Track as an adjacent-field lead; do not couple to the current spike.",
+      "evidence": ["E22", "E23", "E24"]
+    },
+    {
+      "id": "C10",
+      "candidate": "Graphiti LLM-dependent ingestion pipeline (structured-output extraction, SEMAPHORE_LIMIT throttling)",
+      "source_ids": ["O10"],
+      "classification": "TOO_COMPLEX_FOR_VALUE",
+      "integration_point": "Would replace the curator's extraction feeding graph_memory add/add-bulk.",
+      "benefit": "Automated entity/edge extraction with dedup (E18).",
+      "cost": "Rune already has the write-side discipline the research converges on: write-time gating (strength<3, mirroring E18's own cited 2603.15994), fixed predicate vocabulary against schema drift, and alias-first resolution (C4). Importing Graphiti's pipeline duplicates this with new LLM-provider dependencies and 429-throttling complexity.",
+      "architectural_fit": "Redundant - the extraction boundary already exists at curator.py/sleep_time.py.",
+      "authority_implications": "Would route memory writes through LLM structured-output calls, weakening the deterministic gating Rune relies on.",
+      "risks": "Provider coupling in the memory write path.",
+      "required_adaptation": "Not applicable.",
+      "evidence": ["E18", "E14"]
+    }
+  ],
+  "route": "INNOVATION_WARRANTED",
+  "notes": {
+    "route_rationale": "The spike's literal question (which backend) resolves to STANDARD: no backend swap is warranted - Neo4j and FalkorDB conflict with Rune's embedded posture (C1, C2), LadybugDB lacks sufficient evidence (C3), and the reference architecture's load-bearing pattern (temporal semantics at the framework layer, E17) is already Rune's design (C4). However, INNOVATION is warranted on a strictly narrower front: combining researched mechanisms with Rune's existing SQLite tier yields capabilities the status quo genuinely lacks - (a) AS-OF time-travel queries over the full edge history Rune already persists but cannot query temporally (C5, NEP-001 E28-E30, low complexity per E30), and (b) a lexical FTS5 hybrid entry point fixing Rune's capped recall (C6, E18). Both are materially better than 'keep SQLite as-is', both stay inside the embedded/no-new-dependency posture, and neither exists as a standard drop-in Rune could adopt instead - which is exactly the combine-research-with-Rune's-architecture clause, not novelty for its own sake.",
+    "evidence_constraints": "Dossier limitations carried forward: no source benchmarks Rune's regime (single-node, sub-1M entities); O2 vendor magnitudes are marketing-adjacent until reproduced (contradiction #1); FalkorDB-native temporal features unevidenced (limitation #4); Graphiti performance claims not read from the primary paper arXiv 2501.13956 (limitation #7). C5/C6 benefits should be validated with a Rune-local benchmark before synthesis hardens them into recommendations.",
+    "non_goals": "No code modified, no research re-run, no stage advanced; backend migration explicitly NOT part of the warranted innovation scope.",
+    "next_stage_hint": "ADVERSARIAL should attack C5's NULL/half-open-interval semantics and C6's FTS5 write amplification; INNOVATION stage may merge C5+C6 into a single 'temporal+lexical query layer over graph.sqlite' proposal."
+  }
+}
@@ -0,0 +1,42 @@
+{
+  "stage": "INNOVATION",
+  "issue": 163,
+  "round": 1,
+  "process_id": "research-163-r1",
+  "route": "INNOVATION_WARRANTED",
+  "conclusion": "ADAPT",
+  "conclusion_rationale": "The standard mechanism (SQLite graph tier queried via status='active' only, exact/alias/substring entry resolution) is NOT sufficient: it cannot read the bi-temporal history Rune already persists (every superseded edge is stored but unreachable through query()), and its entry point caps practical recall on paraphrase/typo. No standard drop-in closes either gap. However, the warranted innovation is strictly adapted-and-compositional, not novel-for-its-own-sake: NEP-001's AS-OF WHERE-convention (E28-E30) and Graphiti's hybrid-retrieval entry tier (E18) are adapted onto Rune's existing framework-over-SQLite layer (which already implements the semantic model 1:1, E14/E17 — C4), producing a 'temporal+lexical query layer over graph.sqlite'. Backend migration is explicitly out of scope (C1/C2/C3 rejected or deferred at APPLICABILITY; C9 tracked, not proposed).",
+  "candidates": [
+    {
+      "id": "INN-1",
+      "category": "ADAPT",
+      "proposal": "A unified temporal+lexical query layer over the existing graph.sqlite, inside src/rune/graph_memory.py, with zero schema or backend change. Two read-layer components that share one integration surface (query(), lines 217-284): (1) TEMPORAL — an --as-of <iso8601> parameter that replaces the status='active' filter with valid_from <= t AND (valid_until IS NULL OR t < valid_until) AND learned_at <= t, applied identically to the outgoing BFS frontier (line 254) and the incoming-edge query (line 275); BFS structure unchanged; default behavior (no flag) keeps the current active-only fast path. (2) LEXICAL — a SQLite FTS5 virtual table over entities(name, summary) and aliases(alias), inserted as a fallback tier in entity resolution (lines 224-237) with lookup order exact -> alias -> FTS5 BM25 -> substring-LIKE; index maintained on the existing entity/alias write path (resolve_entity, add_edge) in the same DB file. Full embedding tier deliberately omitted — model dependencies are disproportionate to Rune's sub-1M regime.",
+      "derived_from": ["E28", "E29", "E30", "E18", "E14", "E17", "E27"],
+      "source_ids": ["O38", "O41", "O10", "O1"],
+      "composition_of": [
+        "C5 (NEP-001 Phase 1 'AS OF' syntactic sugar, APPLICABLE_WITH_ADAPTATION)",
+        "C6 (Graphiti hybrid retrieval, reduced to its lexical BM25 tier, APPLICABLE_WITH_ADAPTATION)",
+        "Rune's existing bi-temporal edges schema + supersede-not-delete history (already integrated per C4)"
+      ],
+      "novelty": "compositional",
+      "expected_gain": "Two material capabilities the status quo lacks, both read-only on data already on disk: (a) time-travel queries — every contradiction ever superseded becomes queryable as-of any past timestamp, closing the exact gap NEP-001 documents (E29: hand-written temporal WHERE clauses are error-prone and do not compose; E30: Phase 1 is low complexity and delivers most of the value); (b) recall lift at the entry point — paraphrase/typo/alternate-naming terms that currently fail resolution fall through to BM25, which Graphiti credits for its sub-second retrieval (E18), without any new service or dependency (FTS5 is in-process SQLite). Combined, the graph's stored history and practical recall stop being capped by the two read-layer shortcuts.",
+      "risks": "(1) learned_at is a transaction-time proxy, not true bitemporality (E30 defers the real thing at 'Very high' complexity) — must be documented as as-of-knowledge approximation. (2) Half-open-interval and NULL-as-open-ended pitfalls are the documented failure mode of exactly this convention (E29) — they become a mandatory test checklist, not an afterthought. (3) FTS5 write amplification on add-bulk paths and index/tokenizer decisions. (4) BM25 ranking quality is evidenced only via Graphiti's claim, not measured at Rune's regime (dossier limitation #7) — hence the kill test below. (5) No Rune-regime benchmark exists (dossier limitation #2), so gains are predicted, not measured, until the kill test runs.",
+      "kill_test": "Rune-local benchmark on the real curator vocabulary and a seeded history: (a) TEMPORAL — if querying as-of realistic historical timestamps returns fact sets identical to the active-only set for every t that matters in practice (i.e., the graph accumulates negligible superseded/expired edges), the temporal component's gain is zero and it should be dropped; (b) LEXICAL — if FTS5 resolves fewer than ~30% of the paraphrase/typo terms that exact/alias/substring currently miss, or add-bulk latency regresses more than ~10% with no compensating recall gain, the lexical tier is dead weight. Either half failing independently kills only that half; both failing reduces the conclusion to NO_INNOVATION_WARRANTED. This operationalizes the applicability evidence_constraint ('validate with a Rune-local benchmark before synthesis hardens C5/C6 into recommendations')."
+    }
+  ],
+  "not_proposed": {
+    "C4": "DIRECTLY_APPLICABLE but already integrated — the edges schema, supersede-on-contradiction (insert-before-mark ordering verified at graph_memory.py:200-208), and confidence-gated writes (strength<3 gate verified at :126-135) implement E14's model 1:1. Listing it as an ADOPT candidate would manufacture novelty for completed work. Residual risk is drift-tracking only.",
+    "C9": "PROMISING_FOR_INNOVATION (Ladybug Memory lakehouse, E22/E23) but explicitly future: roadmap-stage components, affiliated-only benchmarks, chains to C3's fork-mortality risk, and the applicability stage ruled 'track as an adjacent-field lead; do not couple to the current spike'. Proposed as a BUILD candidate it would fail the no-evidence-derivation bar at Rune's current regime. Revisit if the graph ever approaches SQLite's limits or LadybugDB matures."
+  },
+  "verification": {
+    "code_claims_checked": [
+      "edges table implements valid_from/valid_until/learned_at, status/superseded_by, evidence/source (graph_memory.py:101-116) — confirms C4 1:1 claim",
+      "query() filters status='active' only, no as-of path (graph_memory.py:254, :275) — confirms C5 gap is real",
+      "entity resolution is exact -> lower(alias) -> substring LIKE only (graph_memory.py:224-237) — confirms C6 gap is real",
+      "superseded history is persisted but unreachable via query() — confirms the temporal read gap"
+    ],
+    "evidence_claims_checked": "E14, E17, E18, E22, E23, E28, E29, E30 verified verbatim against research/issue-163/outward.json",
+    "constraints_respected": "No code modified; no research re-run; no stage advanced; backend migration excluded from scope per applicability non_goals."
+  },
+  "next_stage_hint": "ADVERSARIAL should attack INN-1's two independent halves separately: the learned_at-as-transaction-time-proxy approximation (what audit questions become unanswerable?), the half-open-interval/NULL semantics (E29's documented pitfalls), and FTS5 write amplification on add-bulk. The kill test above is designed to be executable at that stage."
+}
@@ -0,0 +1,236 @@
+{
+  "stage": "OUTWARD",
+  "process_id": "research-163-r1",
+  "issue": 163,
+  "round": 1,
+  "subquestion": "Address: Temporal graph backend spike: Neo4j vs FalkorDB (LadybugDB experimental; Graphiti as reference)",
+  "discovery": {
+    "queries": [
+      {
+        "id": "Q1",
+        "tool": "webfetch (DuckDuckGo HTML)",
+        "query": "neo4j vs falkordb graph database benchmark comparison",
+        "receipt": "fetched OK; 10 results returned inline"
+      },
+      {
+        "id": "Q2",
+        "tool": "webfetch (DuckDuckGo HTML)",
+        "query": "graphiti zep temporal knowledge graph agent memory neo4j falkordb",
+        "receipt": "fetched OK; 10 results returned inline"
+      },
+      {
+        "id": "Q3",
+        "tool": "webfetch (DuckDuckGo HTML)",
+        "query": "ladybugdb graph database kuzu fork",
+        "receipt": "fetched OK; 10 results returned inline"
+      },
+      {
+        "id": "Q4",
+        "tool": "webfetch (DuckDuckGo HTML)",
+        "query": "falkordb redisgraph successor cypher features github",
+        "receipt": "fetched OK; 10 results returned inline"
+      },
+      {
+        "id": "Q5",
+        "tool": "webfetch (DuckDuckGo HTML)",
+        "query": "neo4j temporal versioning bitemporal cypher valid time",
+        "receipt": "fetched OK; 10 results returned inline"
+      }
+    ],
+    "sources_discovered": [
+      { "id": "O1", "url": "https://aimultiple.com/graph-databases", "class": "external (independent benchmark, updated 2026-04-15)", "note": "SELECTED and read" },
+      { "id": "O2", "url": "https://www.falkordb.com/blog/graph-database-performance-benchmarks-falkordb-vs-neo4j/", "class": "external (vendor blog, pub 2024-12-02, updated 2026-08-23)", "note": "SELECTED and read" },
+      { "id": "O3", "url": "https://www.puppygraph.com/blog/falkordb-vs-neo4j", "class": "external (competing-vendor comparison)", "note": "not selected — competing vendor has stake in the comparison" },
+      { "id": "O4", "url": "https://knodegraph.com/blog/falkordb-vs-neo4j/", "class": "external (third-party blog w/ 2026 benchmarks)", "note": "not selected — O1 covers the independent-benchmark slot with fuller methodology" },
+      { "id": "O5", "url": "https://github.com/FalkorDB/benchmark", "class": "repo (vendor benchmark harness)", "note": "SELECTED; README 404 on master and main; repo metadata read via GitHub API instead" },
+      { "id": "O6", "url": "https://www.plushcap.com/content/falkordb/blog/falkordb-falkordb-vs-neo4j-graph-database-performance-benchmarks", "class": "external (mirror of O2)", "note": "not selected — duplicate" },
+      { "id": "O7", "url": "https://inferensys.com/differences/neuro-symbolic-ai-frameworks/knowledge-graph-construction-tools/neo4j-vs-falkordb", "class": "external (aggregator comparison)", "note": "not selected" },
+      { "id": "O8", "url": "https://inferensys.com/differences/ai-software-factory-platforms/code-knowledge-graph-systems/neo4j-vs-falkordb-for-code-graphs", "class": "external (aggregator comparison)", "note": "not selected" },
+      { "id": "O9", "url": "https://3nuggets.io/compare-neo4j-vs-falkordb", "class": "external (practitioner fit comparison)", "note": "not selected" },
+      { "id": "O10", "url": "https://github.com/getzep/graphiti", "class": "repo (Graphiti primary)", "note": "SELECTED and read (README via raw.githubusercontent.com/main)" },
+      { "id": "O11", "url": "https://neo4j.com/blog/developer/graphiti-knowledge-graph-memory/", "class": "external (Neo4j official blog on Graphiti)", "note": "not selected — O10 is primary" },
+      { "id": "O12", "url": "https://docs.falkordb.com/agentic-memory/graphiti", "class": "external (FalkorDB vendor docs)", "note": "not selected" },
+      { "id": "O13", "url": "https://github.com/Memory-Agents/graphiti/", "class": "repo (mirror)", "note": "not selected — duplicate of O10" },
+      { "id": "O14", "url": "https://codex.danielvaughan.com/2026/03/30/graphiti-agent-memory-store/", "class": "external (practitioner review)", "note": "not selected" },
+      { "id": "O15", "url": "https://memorypapers.org/papers/zep-a-temporal-knowledge-graph-architecture-for-agent-memory", "class": "external (paper summary site)", "note": "not selected — primary paper is arXiv 2501.13956, referenced from O10" },
+      { "id": "O16", "url": "https://www.falkordb.com/blog/graphiti-falkordb-multi-agent-performance/", "class": "external (vendor integration blog)", "note": "not selected" },
+      { "id": "O17", "url": "https://www.falkordb.com/blog/building-temporal-knowledge-graphs-graphiti/", "class": "external (vendor blog)", "note": "not selected" },
+      { "id": "O18", "url": "https://thegtmdirectory.com/tools/graphiti", "class": "external (directory)", "note": "not selected" },
+      { "id": "O19", "url": "https://www.getzep.com/platform/graphiti/", "class": "external (Zep platform page)", "note": "not selected" },
+      { "id": "O20", "url": "https://ladybugdb.com/", "class": "external (official site)", "note": "not read — superseded by O21 README + O28 encyclopedia" },
+      { "id": "O21", "url": "https://github.com/LadybugDB/ladybug", "class": "repo (LadybugDB primary)", "note": "SELECTED and read (README via raw.githubusercontent.com/main)" },
+      { "id": "O22", "url": "https://github.com/lcretan/LadybugDB-KuzuDB.ladybug", "class": "repo (mirror)", "note": "not selected — duplicate" },
+      { "id": "O23", "url": "https://docs.ladybugdb.com/", "class": "external (official docs)", "note": "not selected" },
+      { "id": "O24", "url": "https://thedataquarry.com/blog/from-kuzu-to-ladybug/", "class": "external (practitioner blog by ex-Kuzu engineer, 2026-04-11)", "note": "SELECTED and read" },
+      { "id": "O25", "url": "https://mpr.crossjam.net/wp/mpr/2025/11/kuzudb-and-ladybugdb/", "class": "external (context blog on Kuzu archival)", "note": "not selected — snippet-level evidence only" },
+      { "id": "O26", "url": "https://gdb-engines.com/db/ladybugdb/", "class": "external (DB directory)", "note": "not selected" },
+      { "id": "O27", "url": "https://cocoindex.io/docs-v0/targets/ladybug/", "class": "external (integration docs)", "note": "not selected" },
+      { "id": "O28", "url": "https://dbdb.io/db/ladybugdb", "class": "external (CMU Database of Databases encyclopedia)", "note": "SELECTED and read" },
+      { "id": "O29", "url": "https://github.com/FalkorDB/FalkorDB", "class": "repo (FalkorDB primary)", "note": "SELECTED and read (README via raw.githubusercontent.com/master)" },
+      { "id": "O30", "url": "https://www.falkordb.com/blog/redisgraph-eol-migration-guide/", "class": "external (vendor migration guide)", "note": "not selected" },
+      { "id": "O31", "url": "https://basekv.com/articles/redisgraph-deprecated-now-what", "class": "external (RedisGraph EOL article)", "note": "not selected — snippet-level evidence only" },
+      { "id": "O32", "url": "https://stackharbor.com/en/knowledge-base/redis-redisgraph-module/", "class": "external (knowledge base)", "note": "not selected" },
+      { "id": "O33", "url": "https://orchestrator.dev/blog/2025-12-11-falkordb/", "class": "external (blog)", "note": "not selected" },
+      { "id": "O34", "url": "https://falkordb.github.io/docs-staging/", "class": "external (staging docs)", "note": "not selected" },
+      { "id": "O35", "url": "https://www.solosoft.dev/post/falkordb-graph-database-2026/", "class": "external (blog)", "note": "not selected" },
+      { "id": "O36", "url": "https://hydradb.com/blog/falkordb-alternatives", "class": "external (competitor listicle)", "note": "not selected" },
+      { "id": "O37", "url": "https://groups.google.com/g/redis-db/c/aoBMFIszBRg", "class": "external (fork announcement)", "note": "not selected" },
+      { "id": "O38", "url": "https://neo4j.com/docs/cypher-manual/current/values-and-types/temporal/", "class": "external (Neo4j official docs)", "note": "SELECTED and read (page truncated at ~40KB; temporal type table captured)" },
+      { "id": "O39", "url": "https://dev.to/satyam_shree_087caef77512/a-practical-guide-to-temporal-versioning-in-neo4j-nodes-relationships-and-historical-graph-1m5g", "class": "external (practitioner bitemporal guide)", "note": "not selected — O41 evidences the same gap at greater authority" },
+      { "id": "O40", "url": "https://kindatechnical.com/cypher/cypher-date-and-time-functions.html", "class": "external (tutorial)", "note": "not selected" },
+      { "id": "O41", "url": "https://github.com/DIGITAL-FABRIC-AI/neo4j-temporal-graph", "class": "repo (NEP-001 reference implementation)", "note": "SELECTED and read (NEP-001.md via raw.githubusercontent.com/master)" },
+      { "id": "O42", "url": "https://medium.com/neo4j/keeping-track-of-graph-changes-using-temporal-versioning-3b0f854536fa", "class": "external (Neo4j staff blog)", "note": "not selected" },
+      { "id": "O43", "url": "https://www.cosmiclearn.com/neo4j/cypher-datetime-duration.php", "class": "external (tutorial)", "note": "not selected" },
+      { "id": "O44", "url": "https://dev.graphacademy.neo4j.com/blog/til-replace-apoc-temporal-format", "class": "external (Neo4j academy TIL)", "note": "not selected" },
+      { "id": "O45", "url": "https://stackoverflow.com/questions/15365387/neo4j-relationships-with-time-constraints", "class": "external (Stack Overflow)", "note": "not selected" }
+    ]
+  },
+  "reading": {
+    "sources_read": [
+      {
+        "id": "O1",
+        "url": "https://aimultiple.com/graph-databases",
+        "receipt": "full page fetched via webfetch (markdown), 2026 session turn",
+        "class_note": "independent analyst benchmark (AIMultiple); self-declared ethical norms and no-subscriber statement; single-author (Ekrem Sarı)",
+        "claims": [
+          { "id": "E1", "claim": "Benchmark setup: Neo4j 5.26.0 Community vs FalkorDB 'latest' vs Memgraph 2.21.0 on a synthetic graph from 120,000 Amazon reviews (381K nodes, 804K edges); 12 Cypher query templates x 1,000 measurements each; ingestion at 6 batch sizes; 60-second sustained concurrent load at 1-32 threads; RunPod 8 vCPU / 32GB RAM, native installs, same machine, fixed seed=42.", "section": "methodology, environment, data" },
+          { "id": "E2", "claim": "Concurrent throughput: FalkorDB 6,693 QPS at 8 threads = 6.7x Neo4j; FalkorDB plateaus after 8 threads (Redis single-threaded core is the ceiling); Neo4j peaks at 1,010 QPS at 16 threads and drops to 927 at 32 (thread contention).", "section": "key findings" },
+          { "id": "E3", "claim": "FalkorDB had lowest latency on 11 of 12 queries; Neo4j won the heaviest aggregation (agg_feature_sentiment: 131ms vs 152ms) because its query optimizer produced a better execution plan.", "section": "key findings" },
+          { "id": "E4", "claim": "Cold start: FalkorDB ready in 1.1ms (first query 0.4ms) vs Neo4j 90ms to accept first query, first warming query 274ms settling to ~34ms after ~3 queries — an 82x gap relevant to pod scale-up/serverless.", "section": "key findings" },
+          { "id": "E5", "claim": "Index sensitivity: without indexes Neo4j's deep_feature_products query took 293ms vs 0.17ms with indexes (1,712x); FalkorDB results were roughly unchanged with/without indexes because Redis hash tables act as implicit indexes.", "section": "key findings" },
+          { "id": "E6", "claim": "Memory for the same graph: Memgraph 415MB, FalkorDB 496MB, Neo4j 2,668MB (JMX heap; process VmRSS ~5.2GB due to 4GB JVM pre-allocation).", "section": "key findings" },
+          { "id": "E7", "claim": "Mixed workload (80% read / 20% write, 8 threads, 60s, zero errors): FalkorDB 837 QPS, Neo4j 738 QPS, Memgraph 467 QPS; writes did not noticeably degrade reads on any engine.", "section": "key findings" },
+          { "id": "E8", "claim": "Stated limitations: single machine/single node, no distributed or cluster benchmarking (Neo4j Enterprise clustering out of scope), synthetic data, not measured: disk persistence/recovery, full-text search, graph algorithms, write-heavy (>50% writes) workloads; different drivers used (Neo4j Python driver for Neo4j and Memgraph, falkordb-py for FalkorDB; measured overhead difference <0.5ms).", "section": "limitations" }
+        ]
+      },
+      {
+        "id": "O2",
+        "url": "https://www.falkordb.com/blog/graph-database-performance-benchmarks-falkordb-vs-neo4j/",
+        "receipt": "full page fetched via webfetch (markdown), 2026 session turn",
+        "class_note": "vendor-published benchmark (FalkorDB blog, author = FalkorDB chief architect); FAQ and RAG-implications table are vendor positioning",
+        "claims": [
+          { "id": "E9", "claim": "Vendor benchmark (SNAP Pokec social network, 8 cores/16 threads, 32GB RAM, GitHub Actions runner, 11 templated queries, 82% read / 18% write): p50 55ms (FalkorDB) vs 577.5ms (Neo4j); p90 108ms vs 4,784.1ms; p99 136.2ms vs 46,923.8ms.", "section": "performance metrics" },
+          { "id": "E10", "claim": "Vendor positioning table: FalkorDB 'native' multi-tenancy vs Neo4j 'limited'; built-in GraphRAG support vs Neo4j 'custom'; horizontal vs vertical scaling model; FAQ claims production-readiness as 'a continuation of the production-tested RedisGraph codebase'.", "section": "implications on RAG, FAQ" },
+          { "id": "E11", "claim": "Blog update note (as of 2026-08-23 revision): FalkorDB completed a ground-up rewrite of its core engine in Rust (preview), closing 100+ open memory-safety bugs inherited from the C implementation, with no changes to existing Cypher queries, APIs, or integrations; internal benchmarks show the Rust engine matching or exceeding the C engine.", "section": "technical analysis" },
+          { "id": "E12", "claim": "Operational facts: persistence via Redis mechanisms (RDB/AOF); Bolt protocol supported since FalkorDB 4.0; latest FalkorDB version requires Redis 7.4; minimum 4GB RAM, 16GB recommended for production.", "section": "FAQ" }
+        ]
+      },
+      {
+        "id": "O5",
+        "url": "https://github.com/FalkorDB/benchmark",
+        "receipt": "README.md fetch 404 on both master and main (raw.githubusercontent.com); repo metadata retrieved via api.github.com/repos/FalkorDB/benchmark (HTTP 200), 2026 session turn",
+        "class_note": "vendor benchmark harness repo; only metadata receipt obtained — content NOT read",
+        "claims": [
+          { "id": "E13", "claim": "Repo metadata: MIT-licensed, written in Rust, active (pushed 2026-09-07), homepage benchmark.falkordb.com, 14 stars, description 'A benchmarking tool to evaluate and compare the performance of graph databases with customizable workloads and metrics'; default branch is 'master', yet README.md is not present at the raw master/main paths — headline benchmark numbers therefore rest on the vendor blog (O2) alone in this evidence set.", "section": "GitHub API metadata" }
+        ]
+      },
+      {
+        "id": "O10",
+        "url": "https://github.com/getzep/graphiti",
+        "receipt": "README.md fetched via raw.githubusercontent.com/getzep/graphiti/main (markdown), 2026 session turn",
+        "class_note": "primary repo of the reference temporal-KG framework (Zep AI); Apache-2.0 per directory listings; README is maintained and detailed",
+        "claims": [
+          { "id": "E14", "claim": "Graphiti models a temporal context graph where every fact (entity-relation-entity edge) carries a validity window (when it became true, when superseded); changed facts are invalidated, not deleted, preserving full temporal history; bi-temporal tracking with automatic fact invalidation is listed as a core differentiator vs GraphRAG; every derived fact traces back to episodes (raw ingested data) for provenance.", "section": "What is a Context Graph, Why Graphiti, Graphiti vs GraphRAG" },
+          { "id": "E15", "claim": "Supported graph backends (requirements): Neo4j 5.26, FalkorDB 1.1.2, Amazon Neptune (Database/Analytics + OpenSearch Serverless as full-text backend), and Kuzu 0.11.2 — the Kuzu driver is explicitly DEPRECATED ('upstream Kuzu project is no longer maintained. New projects should use Neo4j or FalkorDB') and emits DeprecationWarning, to be removed in a future release.", "section": "Installation requirements, Kuzu warnings" },
+          { "id": "E16", "claim": "Graphiti uses a pluggable driver architecture (graphiti_core.driver.*: Neo4jDriver, FalkorDriver, KuzuDriver, NeptuneDriver; custom backends via CONTRIBUTING 'Adding a graph driver'); FalkorDB support installs via extra graphiti-core[falkordb]; an EMBEDDED option graphiti-core[falkordblite] exists (redislite-based AsyncFalkorDB, requires Python 3.12+) storing to a local dbfile.", "section": "Installing with FalkorDB Support, Database Configuration" },
+          { "id": "E17", "claim": "Zep (the managed product) runs on a proprietary 'Context Graph Engine' requiring no third-party graph database; the OSS Graphiti framework is bring-your-own backend where retrieval performance 'depends on your setup' — i.e., the reference architecture deliberately decouples temporal semantics from the storage engine.", "section": "Graphiti and Zep, Zep vs Graphiti table" },
+          { "id": "E18", "claim": "Ingestion is LLM-dependent: entity/edge extraction and dedup require structured (JSON) output, working best with OpenAI/Anthropic/Gemini; concurrency is throttled by SEMAPHORE_LIMIT (default 10) to avoid provider 429s; retrieval is hybrid (semantic embeddings + BM25 keyword + graph traversal) with claimed sub-second latency vs GraphRAG's seconds-to-tens-of-seconds.", "section": "Structured output notes, SEMAPHORE_LIMIT, Graphiti vs GraphRAG" },
+          { "id": "E19", "claim": "The framework's reference paper is 'Zep: A Temporal Knowledge Graph Architecture for Agent Memory' (arXiv 2501.13956).", "section": "Graphiti and Zep" }
+        ]
+      },
+      {
+        "id": "O21",
+        "url": "https://github.com/LadybugDB/ladybug",
+        "receipt": "README.md fetched via raw.githubusercontent.com/LadybugDB/ladybug/main (markdown), 2026 session turn",
+        "class_note": "primary repo of the Kuzu successor; README states MIT license and 'formerly known as Kuzu'",
+        "claims": [
+          { "id": "E20", "claim": "Ladybug is an embedded graph database (formerly Kuzu): flexible property graph model + Cypher; embeddable, serverless integration; native full-text search and vector index; columnar disk-based storage; CSR adjacency list/join indices; vectorized and factorized query processing; multi-core query parallelism; serializable ACID transactions; Wasm bindings; MIT license; SDKs for Python (pip install ladybug), NodeJS, Rust (lbug), Go, Swift, Java, C/C++, CLI.", "section": "README core feature list, installation table, license" }
+        ]
+      },
+      {
+        "id": "O24",
+        "url": "https://thedataquarry.com/blog/from-kuzu-to-ladybug/",
+        "receipt": "full page fetched via webfetch (markdown), 2026 session turn",
+        "class_note": "practitioner blog by Prashanth Rao (ex-Kuzu employee), 2026-04-11; close discussions with LadybugDB lead maintainer disclosed — sympathetic but technically detailed",
+        "claims": [
+          { "id": "E21", "claim": "Kuzu was archived in September 2025 and the codebase went quiet; LadybugDB is a fork of Kuzu maintained by the team at Ladybug Memory, with a shifted goal: from standalone embedded graph DB to a 'graph lakehouse' interoperating with DuckDB's storage layer, reading/writing Arrow/Parquet, connecting to object stores.", "section": "intro, The Bigger Picture" },
+          { "id": "E22", "claim": "Ladybug Memory's platform vision combines four components: Pgembed (transactional writes from multiple agents), DuckDB (auto-migrating aging data to columnar), Icebug (zero-copy graph analytics), and LadybugDB (graph store) — a local-first unified memory substrate for AI agents; roadmap includes SparseTensors for embedding storage and GPU acceleration.", "section": "The Bigger Picture: Ladybug Memory" },
+          { "id": "E23", "claim": "Icebug (a fork of the networkit C++ graph analytics library optimized for columnar/Arrow data) reports a PageRank benchmark on a 115M-node Wikidata graph: 8x speed advantage over networkit and 29% less memory usage — an affiliated (not independent) benchmark.", "section": "Running Graph Algorithms with Icebug" }
+        ]
+      },
+      {
+        "id": "O28",
+        "url": "https://dbdb.io/db/ladybugdb",
+        "receipt": "full page fetched via webfetch (markdown), 2026 session turn",
+        "class_note": "third-party encyclopedia entry (CMU Database Group, dbdb.io), revision #4 last updated 2026-07-17; cites repo access Sep 6, 2026, last commit Sep 5, 2026",
+        "claims": [
+          { "id": "E24", "claim": "dbdb.io classifies LadybugDB as an embedded graph-oriented DBMS (Cypher query interface, C++, MIT license, derived from Kuzu, start year 2025) tagged 'Forked Code', 'Revival Project', and 'AI-Assisted' (coding agents Claude/Copilot/Cursor); history states it 'started in 2025 as a revival fork of Kuzu after its acquisition and closure by Apple'; the repo is active (last commit Sep 5, 2026).", "section": "entry metadata + History" }
+        ]
+      },
+      {
+        "id": "O29",
+        "url": "https://github.com/FalkorDB/FalkorDB",
+        "receipt": "README.md fetched via raw.githubusercontent.com/FalkorDB/FalkorDB/master (markdown), 2026 session turn",
+        "class_note": "primary repo; license section is explicit (SSPLv1)",
+        "claims": [
+          { "id": "E25", "claim": "FalkorDB is a Redis-module graph database ('hosted by Redis', loadmodule falkordb.so; Redis 7.4 required for latest version): first queryable property graph DB to use sparse matrices (GraphBLAS) for adjacency and linear algebra for querying; openCypher support with proprietary extensions; multi-tenant; LICENSED UNDER SERVER SIDE PUBLIC LICENSE v1 (SSPLv1) — not MIT/Apache; official clients: Python (MIT), Java (BSD), Node.JS (MIT), Rust (MIT), Go (BSD), C# (Apache-2.0).", "section": "Unique Features, Loading FalkorDB into Redis, License, client tables" },
+          { "id": "E26", "claim": "Deployment shape: single Docker container (falkordb/falkordb, ports 6379 + 3000 browser UI) or compiled as a .so loaded into an existing Redis server; build requires OpenMP (libgomp).", "section": "Get Started, Compiling" }
+        ]
+      },
+      {
+        "id": "O38",
+        "url": "https://neo4j.com/docs/cypher-manual/current/values-and-types/temporal/",
+        "receipt": "page fetched via webfetch (markdown); output truncated at ~40KB (saved to tool-output file); temporal type table and timezone semantics captured before truncation",
+        "class_note": "official Neo4j Cypher Manual (current, v25/5/4.4 selector)",
+        "claims": [
+          { "id": "E27", "claim": "Cypher has built-in temporal VALUE types — DATE, LOCAL TIME, ZONED TIME, LOCAL DATETIME, ZONED DATETIME (temporal instants) and DURATION (a temporal amount, not an instant) — storable as properties on nodes and relationships, with IANA-named-timezone support, UTC-internal storage, component accessors, and db.temporal.timezone configuration; this is property-level temporal typing, not graph versioning — the page describes no valid-time/transaction-time query semantics.", "section": "Temporal value types, Time zones" }
+        ]
+      },
+      {
+        "id": "O41",
+        "url": "https://github.com/DIGITAL-FABRIC-AI/neo4j-temporal-graph",
+        "receipt": "NEP-001.md fetched via raw.githubusercontent.com/DIGITAL-FABRIC-AI/neo4j-temporal-graph/master (markdown), 2026 session turn",
+        "class_note": "community NEP (Neo4j Enhancement Proposal) draft RFC, 2026-03-18, author Ashley Dunfield (Digital Fabric), Apache-2.0; NOT an accepted Neo4j feature; includes a plugin reference implementation",
+        "claims": [
+          { "id": "E28", "claim": "Neo4j has NO native temporal versioning: NEP-001 (draft RFC status) proposes adding 'AS OF' query semantics; its prior-art table states 'Neo4j: No native temporal support — this proposal' (likewise Apache AGE, TypeDB, Amazon Neptune: none), while SQL:2011 defines FOR SYSTEM_TIME/FOR VALID_TIME AS OF and MariaDB/Db2 implement transaction-time/bitemporal tables.", "section": "Abstract, Section 5 Prior Art" },
+          { "id": "E29", "claim": "Current Neo4j temporal-versioning practice is valid_from/valid_to (or effective_date/end_date) property conventions with manual WHERE filters; documented problems: verbose and error-prone (NULL-as-open-ended, <= vs <, half-open intervals), does not compose (each hop needs its own temporal filter, growing linearly with path depth), the planner cannot recognize temporal predicates (no temporal index scans or period-overlap joins), and transaction time is lost unless the application records it manually; production evidence cited: 3.1M+ temporally-annotated relationships in a regulatory graph (Neo4j 2026.01.4 Community, ~15M nodes, ~30M relationships).", "section": "Section 1.2 The Current State Is Broken, Section 1.3 Evidence from Production" },
+          { "id": "E30", "claim": "Even the proposal defers full bitemporality: transaction time (system time) requires immutable relationship versioning — new relationship versions rather than in-place updates — rated 'Very high' implementation complexity and proposed as a separate later NEP; Phase 1 ('AS OF' as parse-time syntactic sugar over the WHERE-clause convention) is rated low complexity and delivers most of the developer-experience value.", "section": "Section 2.1.4, Section 4.1, Section 7 Roadmap" }
+        ]
+      }
+    ]
+  },
+  "limitations": [
+    "FalkorDB/benchmark (O5) README could not be retrieved (404 on raw master and main despite default_branch='master' per GitHub API) — the vendor benchmark's methodology and raw results were not independently verified; its headline numbers enter this evidence set only via the vendor blog (O2).",
+    "Both performance evidence sources are workload-specific and non-overlapping: O1 uses a 381K-node synthetic review graph on 8 vCPU; O2 uses the SNAP Pokec social network on a GitHub Actions runner. No source benchmarks Rune's regime (single-node, sub-1M entities, embedded/local-first).",
+    "Neo4j temporal docs (O38) were fetched but truncated (~40KB); the temporal functions/operators pages were not read. The captured claim (E27) covers value types only.",
+    "No FalkorDB-native temporal feature documentation was read (docs.falkordb.com TTL/time-function pages were not fetched) — FalkorDB's own temporal capabilities beyond Cypher property storage are unevidenced in this set.",
+    "No Neo4j licensing/pricing source was read: Community-vs-Enterprise constraints (clustering, RBAC) appear only as asides inside O1/O2 and are not independently evidenced.",
+    "The Kuzu-closure cause is single-sourced: dbdb.io (O28) says 'acquisition and closure by Apple'; mpr.crossjam (O25, snippet only) says 'abandoned by its creator and sponsor Kuzu Inc'; thedataquarry (O24, ex-Kuzu) says only 'archived'. The acquirer claim is unverified.",
+    "Graphiti's own benchmark claims (sub-second retrieval, LongMemEval/DRIFT-style SOTA via the Zep paper) were not read from the primary paper (arXiv 2501.13956) — only the README's characterization (E18, E19).",
+    "All numbers are third-party; nothing was reproduced locally, and the stage contract forbids running spikes."
+  ],
+  "contradictions": [
+    {
+      "topic": "Magnitude of FalkorDB's performance advantage over Neo4j",
+      "resolution": "Vendor benchmark (O2/E9) reports p99 136.2ms vs 46,923.8ms (~345x) and p50 55ms vs 577.5ms (~10x); the independent benchmark (O1/E2-E3) reports 6.7x concurrent throughput and 11/12 query wins, but Neo4j WINS the heaviest aggregation and FalkorDB's throughput ceiling is Redis's single-threaded core. Not strictly contradictory (different datasets, hardware, query mixes, and metrics), but the vendor number is an outlier that independent evidence does not approach; treat O2 magnitudes as marketing-adjacent until reproduced."
+    },
+    {
+      "topic": "Why Kuzu died / what LadybugDB is a revival of",
+      "resolution": "O28 (dbdb.io): 'revival fork of Kuzu after its acquisition and closure by Apple'; O25 (snippet): 'abandoned by its creator and sponsor Kuzu Inc'; O24 (ex-Kuzu): 'Kuzu got archived' Sept 2025 without naming a cause. All agree the upstream archived in 2025 and LadybugDB is the maintained fork (active commits Sep 2026, E24); the acquirer identity is contested/unverified."
+    },
+    {
+      "topic": "FalkorDB production-readiness framing",
+      "resolution": "O2 FAQ claims production-readiness as 'a continuation of the production-tested RedisGraph codebase' (E10), while the same evidence set records that RedisGraph itself reached EOL (support ended Jan 31, 2025 per O31 snippet; repo deprecated). Continuity of codebase is real (E25 fork lineage), but 'production-tested' inherits from a discontinued upstream; additionally the core engine is being rewritten in Rust (E11), which resets part of that maturity claim."
+    },
+    {
+      "topic": "Embedded-backend path via Graphiti",
+      "resolution": "Graphiti supports an embedded option (falkordblite, E16) and a Kuzu driver, but the Kuzu driver is deprecated with upstream declared unmaintained (E15) — and Graphiti lists no LadybugDB driver, even though LadybugDB IS the maintained Kuzu fork (E20, E21, E24). So 'Graphiti as reference' currently endorses Neo4j or FalkorDB only; using it against LadybugDB would require a new driver (the framework documents how, E16)."
+    }
+  ],
+  "repo_grounding_note": "INWARD identified src/rune/graph_memory.py (memory umbrella) as Rune's existing graph surface: a headless SQLite graph tier at memory/graph/graph.sqlite, no external graph DB dependency. The external evidence maps onto that posture as follows: FalkorDB is server-shaped (Redis module, own container/ports, E25/E26) with an embedded redislite variant only via Graphiti's falkordblite extra (E16, Python 3.12+); LadybugDB is genuinely embedded, MIT, with native FTS + vector index and ACID (E20) but is a young revival fork (E24) whose upstream died once already; Neo4j is the mature server with the deepest ecosystem (O1/E8) but JVM-scale memory (E6) and no native temporal versioning (E27, E28-E30) — the temporal semantics in this spike's reference architecture (Graphiti, E14) are implemented at the framework layer above any backend, which is the load-bearing fact for the spike question.",
+  "stop_condition": {
+    "external_subquestions": ["Address: Temporal graph backend spike: Neo4j vs FalkorDB (LadybugDB experimental; Graphiti as reference)"],
+    "status": "adequate evidence",
+    "note": "5 discovery queries issued, all returned results (receipts above); 45 unique sources discovered and classified (O1-O45); 9 sources read in full (O1, O2, O10, O21, O24, O28, O29, O38, O41) + 1 metadata-only receipt (O5) = 10 sources with fetch/read receipts; both required source classes covered (repo: O5, O10, O21, O29, O41; external: O1, O2, O24, O28, O38). Requirement was >=2 unique URLs; actual URLs read: 9 (+1 API receipt). Stopped here per stage rules: evidence requirement satisfied, remaining candidates (O3, O4, O7-O9, O11-O13, O14-O19, O20, O22, O23, O25-O27, O30-O37, O39, O40, O42-O45) recorded but not read. No synthesis, no design, no code changes performed."
+  }
+}
@@ -0,0 +1,16 @@
+{
+  "outcome": "PROCEED",
+  "findings": [
+    "INTERFACE CONCRETE: the round-1 INTERFACE GAP (M3/FTS5) is resolved by committed design, not delegation — non-contentless DDL 'CREATE VIRTUAL TABLE graph_lex USING fts5(name, alias, entity_id UNINDEXED, tokenize=''unicode61'')', one row per (entity_id, text) over entities.name ∪ aliases.alias, entity_id UNINDEXED as the sole row→entity mapping, INSERT-only maintenance (name-row on entity creation at :152-155; alias-row only when INSERT OR IGNORE rowcount==1 at :209-212), and a named rebuild-lex bulk path. A coder can implement every piece without inventing structure. The rejected contentless and rowid-packed alternatives are documented with reasons, preventing silent resurrection.",
+    "INTERFACE CONCRETE: M1a supersede fix is a verbatim UPDATE (status, superseded_by, valid_until) pinned to graph_memory.py:206-208, using the same ts from :187; the empty-DB premise for free backfill is independently verified (adversarial A1/A5 live-DB receipts: 0 entities/aliases/edges, 0 valid_until non-null).",
+    "INTERFACE CONCRETE: normalize_as_of() is fully specified — accepted input forms ('Z' suffix, '-05:00' offset, fractional seconds), output format (UTC '+00:00', timespec='seconds' matching now_iso at :78-79), failure mode (ValueError, never lexicographic comparison of raw input), and the exact filter clause replacement at both :254 and :275.",
+    "PARAMETER CONCRETE: the round-1 PARAMETER GAP is closed — N=4 weeks and <50-edges threshold are pre-committed in INV-5, sequence step 9, AC9, and test_population_gate_harness, with an explicit no-rechoice-after-observation rule.",
+    "MINOR GAP CLOSED: the alias sort key is named verbatim (ORDER BY a.entity_id ASC at BOTH :228-231 and :147-151), matching the two nondeterminism sites actually present in the source; INV-8 and its test are now mechanically checkable.",
+    "SEQUENCE IMPLEMENTABLE: steps 0-9 are in dependency order (pre-flight selector check → write-side M1a+tests → normalize_as_of → population gate check → as-of filter → FTS5 projection → kill tests → selector-floor test → docs → T5 evaluation); no step requires an artifact built by a later step, and the read-layer-before-write-side ordering hazard is explicitly gated (steps 1, 3; AC10).",
+    "ACCEPTANCE CRITERIA OBSERVABLE: AC1-AC7 and AC9 map 1:1 to the 12 required tests, each with concrete pass/fail conditions (exact edge counts at pinned timestamps, ≥30% held-out resolution AND floor survival at memory_selector output, ≤10% latency delta with commits held constant, roundtrip row-set equality). AC8 is a documentation check with the exact replacement characterization quoted; AC10 is verifiable from change history.",
+    "AUTHORITY BOUNDARIES RESPECTED: graph_memory remains sole writer to graph.sqlite; graph_lex lives inside the same DB as a rebuildable projection (no second store, no second writer); memory_selector._graphs_recall and curator/sleep-time write paths are explicitly non-modification targets; the M7 constraint pre-applies to any future C9 sidecar. No new authority paths introduced.",
+    "ROLLBACK REAL: all changes are additive to a single SQLite file — remove --as-of and the FTS5 tier (default path restored exactly per INV-10, guarded by test_as_of_default_path_unchanged), DROP graph_lex (projection, no data loss), and M1a stands alone backward-compatibly (NULL valid_until remains interpretable as open-ended; no legacy backfill exists to unwind). No migration, service, or export involved.",
+    "CODE ANCHORS VERIFIED: spot-checked all load-bearing line citations against src/rune/graph_memory.py — now_iso :78-79, alias lookup :147-151, entity insert :152-155, supersede :206-208, alias INSERT OR IGNORE :209-212, commit :213, query signature :217, LIMIT 1 :228-231, active filters :254/:275, dead docstring :37. All match; the dossier can be handed over verbatim."
+  ],
+  "reopen": null
+}
@@ -0,0 +1,52 @@
+{"type":"step_start","timestamp":1788953320541,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085ed5c5a001WquOCi90p","messageID":"msg_g001a085ed3dc1001E82MsfeLF","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","snapshot":"e400b0f575f7acfc46934d8ec5d67c23d9ab858d","type":"step-start"}}
+{"type":"text","timestamp":1788953472112,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085ef9e0e001b4K5gSJte","messageID":"msg_g001a085ed3dc1001E82MsfeLF","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","type":"text","text":"I'll start by searching for a matching skill, and in parallel begin locating the code and prior research artifacts for issue #163.","time":{"start":1788953468430,"end":1788953472110}}}
+{"type":"tool_use","timestamp":1788953472117,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"type":"tool","tool":"skill_search","callID":"call_7eb4ad656cc7422999dd20dd","state":{"status":"completed","input":{"query":"Adversarial red-team review of research candidates against a codebase: attack leading design candidates (bitemporal graph memory, as-of queries, FTS5 entity resolution, DuckDB analytics tier) using src/rune/graph_memory.py and prior research dossier as input; output a structured adversarial.json dossier for a staged research pipeline on issue #163; audience is the research pipeline maintainer."},"output":"{\n  \"status\": \"matched\",\n  \"results\": [\n    {\n      \"skill_id\": \"firecrawl-agent\",\n      \"name\": \"firecrawl-agent\",\n      \"score\": 0.5973,\n      \"reason\": \"The skill description matches these query terms: as, tier, structured, json, on.\"\n    },\n    {\n      \"skill_id\": \"data-analytics\",\n      \"name\": \"data-analytics\",\n      \"score\": 0.3686,\n      \"reason\": \"The skill description matches these query terms: design, analytic, is.\"\n    },\n    {\n      \"skill_id\": \"super-research\",\n      \"name\": \"super-research\",\n      \"score\": 0.3945,\n      \"reason\": \"The skill description matches these query terms: review, research, candidate, against, as, on, is.\"\n    }\n  ],\n  \"loaded_skill_id\": null\n}","metadata":{"status":"matched","loadedSkillID":null,"truncated":false},"title":"Found 3 skills","time":{"start":1788953472111,"end":1788953472114}},"id":"prt_g001a085efab73001y7hThTOzK","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","messageID":"msg_g001a085ed3dc1001E82MsfeLF"}}
+{"type":"tool_use","timestamp":1788953472121,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"type":"tool","tool":"read","callID":"call_36f974d3328243b1851727db","state":{"status":"completed","input":{"file_path":"/home/nick"},"output":"<path>/home/nick</path>\n<type>directory</type>\n<entries>\n\n)\n\nwith open(path, w) as f:\n    f.write(content)\nprint(\\\"1. Cancellation language fixed\\\")\n\"\n\n)\ncontent = content.replace(\n    Cancel\n--no-pager\n,\n    \n,\n    30\n.adal/\n.agents/\n.android/\n.augment/\n.bash_history\n.bash_logout\n.bash_profile\n.bashrc\n.bob/\n.bun/\n.cache/\n.cargo/\n.clap/\n.claude/\n.cmake/\n.codebuddy/\n.codeium/\n.codex/\n.commandcode/\n.config/\n.continue/\n.copilot/\n.cursor/\n.dart-tool/\n.factory/\n.firecrawl/\n.fltk/\n.flutter\n.git/\n.gitconfig\n.gnupg/\n.gradle/\n.gtkrc-2.0\n.helm-synth/\n.helm/\n.hex/\n.hindsight/\n.icons/\n.iflow/\n.ir_save\n.java/\n.junie/\n.kde-services/\n.kilocode/\n.kiro/\n.kode/\n.letta_backup/\n.letta-backup-20260619-191841/\n.letta-backups/\n.letta-blue-broken-20260617-222052/\n.letta/\n.lmstudio-home-pointer\n.local/\n.lteams/\n.masterpdfeditor/\n.mcp/\n.mcpjam/\n.mempalace/\n.mimocode/\n.mix/\n.mozilla/\n.mux/\n.n8n-mcp/\n.neovate/\n.net/\n.npm/\n.npmrc\n.nv/\n.nvidia-settings-rc\n.nvm/\n.odbc.ini\n.ollama/\n.openclaw/\n.opencode/\n.openhands/\n.pi/\n.pki/\n.plugin-backups/\n.pochi/\n.profile\n.pub-cache/\n.pulse-cookie\n.putty/\n.pytest_cache/\n.qoder/\n.qwen/\n.roo/\n.ruff_cache/\n.rune/\n.snowflake/\n.sonic-pi/\n.ssh/\n.steam/\n.steampath\n.steampid\n.tauri/\n.themes/\n.TorrHunt.id\n.trae-cn/\n.trae/\n.Transcribe!7\n.triton/\n.var/\n.venv/\n.venvs/\n.vibe/\n.viminfo\n.vscode-oss-shared/\n.vscode-oss/\n.vst/\n.vst3/\n.wezterm.lua\n.wget-hsts\n.win11.draft.txt\n.winboat/\n.wine-guitarpro8/\n.wine-ni/\n.wine/\n.wine32/\n.xinitrc\n.yeqwqauh\n.zcompdump-nicks-pc-5.9.zwc\n.zencoder/\n.zoom/\n.zsh_history\n.zsh/\n.zshenv\n.zshenv.backup.20260514-232301\n.zshrc\n.zshrc.backup.20260513-231529\n.zshrc.backup.20260514-232301\n.zynaddsubfx-bank-cache.xml\n[PL] Miss！Don't Affect my Rank_ MDAR v1.1.30/\n148881-mountIso.desktop.disabled\n30\nagent-73c6f6fe-4636-464d-9a72-9f136feb54b6.af\nai/\nalsa-scarlett-gui-debug.log\nalsactl-restore.log\nApplications/\naudio-config-backups/\naur-malware-check/\nbackups/\nbin/\nbrightbean-studio/\nbuild/\ncachyos-audit-20260831-225933.tar.gz\ncachyos-audit-20260831-225933/\ncallofcthulhu_investigatorhandbook.zip\ncallofcthulhu_keeperrulebook.zip\ncallofcthulhu_keeperscreenpack.zip\nCancel\ncomfyui/\nconductor/\nconfig.json\ndashboard.json\nDaVinci Resolve Media/\ndebtap-mod/\ndelta-green-foundry-vtt-system/\nDesktop/\ndisk-cleanup-report.sh\ndisk-cleanup-report.txt\ndisplay.json\ndocs/\nDocuments/\ndoorstodarkness.zip\nDownloads/\ndungeondraft-desktop.log\ndungeondraft-run.log\nEscape Dungeon 3/\nestimate-snapshot-cleanup-space.sh\nfcp-support/\nfeatherless_tool_trace_20260618_202454.txt\nfeatherless-models.json\nfeatherless-sync-models.sh\nfirefox-import/\nfix-letta-bash.sh\nGames/\ngo/\nGuitar-Pro-On-Linux/\ninstall_mk3_driver.sh\nisomount/\nKoikatu Party/\nletta_memory_report.md\nletta-backup-2026-06-10/\nletta-backup-2026-06-11-fresh/\nletta-backup-2026-06-18-064233-pre-fresh/\nletta-backup-fresh-20260619-191842/\nletta-bash-diagnostic.sh\nletta-bluegreen-rescue-20260617-221830/\nletta-cli-ui-rescue-20260617-190143/\nletta-code-paste-fix-backup-20260617-215641/\nletta-diag.sh\nletta-diagnose.sh\nletta-diagnostic.sh\nletta-fix-attempt.sh\nletta-fix-bash.sh\nletta-repair.sh\nletta-rescue-20260617-153624/\nlogs/\nMaya and Friends [v1.0] [Diathorn]/\nmimo_local_isolation_v3.sh\nmimo_local_repair.sh\nmimo_local_stabilize_v2.sh\nmimo-local-diagnostic-20260825-155812.txt\nmk3_color_mapper_v0.24.0.py\nmk3_color_pad_mapper_v0.26.0.py\nmk3_color_palette_tester.py\nmk3_color_test_results.json\nmk3_color_tester_v0.16.0.py\nmk3_complete_color_system_v0.27.0.py\nmk3_complete_color_system.json\nmk3_complete_driver.py\nMK3_COMPLETE_FILELIST.md\nmk3_complete_mapping_v0.20.0.py\nmk3_complete_mapping_v0.21.0.py\nmk3_complete_mapping.json\nmk3_complete_path_mapper_v0.33.0.py\nMK3_COMPLETE_SPEC.md\nmk3_complete_tester_v0.15.0.py\nMK3_DAW_ARCHITECTURE.md\nmk3_daw_driver.py\nMK3_DRIVER_FILES.md\nmk3_driver_mapping.json\nMK3_DRIVER_TODO.md\nmk3_driver.py\nmk3_drum_pad_color_finder_v0.30.0.py\nmk3_drum_pad_finder_v0.31.0.py\nmk3_efficient_mapper_v0.35.0.py\nmk3_evdev_find.py\nmk3_gui_simple.py\nmk3_indexed_color_finder_v0.17.0.py\nmk3_input_capture.py\nmk3_input_mapper.py\nmk3_input_reader.py\nmk3_led_map.py\nmk3_led_map.version\nmk3_led_mapper.py\nmk3_led_mapper.version\nmk3_led_mapping.json\nmk3_led_menu.py\nmk3_led_menu.version\nmk3_led_observe.py\nmk3_led_observe.version\nmk3_led_results_v0.3.0.json\nmk3_led_results_v0.5.0.json\nmk3_led_results.json\nmk3_led_results.version\nmk3_led_systematic.py\nmk3_led_systematic.version\nmk3_led_tester_v0.3.0.py\nmk3_led_tester_v0.4.0.py\nmk3_led_tester_v0.5.0.version\nmk3_led_tester_vLine truncated
+{"type":"tool_use","timestamp":1788953472138,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"type":"tool","tool":"glob","callID":"call_89310c79566f46c3be861b5e","state":{"status":"completed","input":{"pattern":"**/graph_memory.py"},"output":"/mnt/workdrive/issue161-harness/src/rune/graph_memory.py","metadata":{"count":1,"truncated":false},"title":"","time":{"start":1788953472116,"end":1788953472137}},"id":"prt_g001a085efabff001iv7X7dz4Y","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","messageID":"msg_g001a085ed3dc1001E82MsfeLF"}}
+{"type":"tool_use","timestamp":1788953472159,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"type":"tool","tool":"glob","callID":"call_bfe3820847524762a6050a6d","state":{"status":"completed","input":{"pattern":"research/issue-163/**"},"output":"/mnt/workdrive/issue161-harness/research/issue-163/stage_ADVERSARIAL.events.jsonl\n/mnt/workdrive/issue161-harness/research/issue-163/stage_ADVERSARIAL.mimo.err.log\n/mnt/workdrive/issue161-harness/research/issue-163/.consumed_issue-163-ADVERSARIAL-1\n/mnt/workdrive/issue161-harness/research/issue-163/task_tree.json\n/mnt/workdrive/issue161-harness/research/issue-163/stage_INNOVATION.events.jsonl\n/mnt/workdrive/issue161-harness/research/issue-163/innovation.json\n/mnt/workdrive/issue161-harness/research/issue-163/stage_INNOVATION.mimo.err.log\n/mnt/workdrive/issue161-harness/research/issue-163/.consumed_issue-163-INNOVATION-1\n/mnt/workdrive/issue161-harness/research/issue-163/stage_APPLICABILITY.events.jsonl\n/mnt/workdrive/issue161-harness/research/issue-163/applicability.json\n/mnt/workdrive/issue161-harness/research/issue-163/stage_APPLICABILITY.mimo.err.log\n/mnt/workdrive/issue161-harness/research/issue-163/.consumed_issue-163-APPLICABILITY-1\n/mnt/workdrive/issue161-harness/research/issue-163/stage_OUTWARD.events.jsonl\n/mnt/workdrive/issue161-harness/research/issue-163/outward.json\n/mnt/workdrive/issue161-harness/research/issue-163/stage_OUTWARD.mimo.err.log\n/mnt/workdrive/issue161-harness/research/issue-163/.consumed_issue-163-OUTWARD-1\n/mnt/workdrive/issue161-harness/research/issue-163/.consumed_issue-163-INWARD-1\n/mnt/workdrive/issue161-harness/research/issue-163/.consumed_issue-163-ISSUE-1","metadata":{"count":18,"truncated":false},"title":"","time":{"start":1788953472117,"end":1788953472153}},"id":"prt_g001a085efac00001iHHFAHWby","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","messageID":"msg_g001a085ed3dc1001E82MsfeLF"}}
+{"type":"step_finish","timestamp":1788953472225,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085efac9e001dhcC0h07m","reason":"tool-calls","snapshot":"df7283f3b96387ad0f6103e49b3cbf71332c2edc","messageID":"msg_g001a085ed3dc1001E82MsfeLF","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","type":"step-finish","tokens":{"total":33639,"input":28905,"output":156,"reasoning":4578,"cache":{"write":0,"read":0}},"cost":0}}
+{"type":"step_start","timestamp":1788953479093,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085efc7b3001hdUmUZfTJ","messageID":"msg_g001a085efad380013M8SX2T8K","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","snapshot":"8dd313d4b9b7e34c2a3cadf157a7c165f211dfa0","type":"step-start"}}
+{"type":"text","timestamp":1788953485023,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085efd4220018ibuDeM5W","messageID":"msg_g001a085efad380013M8SX2T8K","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","type":"text","text":"The project lives at `/mnt/workdrive/issue161-harness`. No skill matched cleanly (the returned IDs are generic web/data tools, not research red-team workflows), so I'll proceed directly. Now reading the target source and the prior stage dossiers that produced the leading candidates.","time":{"start":1788953482274,"end":1788953485020}}}
+{"type":"tool_use","timestamp":1788953485035,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"type":"tool","tool":"read","callID":"call_cfb5fda436554d7e80b577e0","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/src/rune/graph_memory.py"},"output":"<path>/mnt/workdrive/issue161-harness/src/rune/graph_memory.py</path>\n<type>file</type>\n<content>\n1: #!/usr/bin/env python3\n2: \"\"\"Graph memory tier — concept-mediated temporal knowledge graph for the agent.\n3: \n4: Built from the 2025-2026 academic frontier (briefs in\n5: `/tmp/opencode/memory-research/agentic-memory-brief.md` and\n6: `~/.firecrawl/claim-audit-2026/brief.md`). Exceeds the entity-hub approach by\n7: following the research convergence:\n8: \n9:   - CONCEPT-MEDIATED, not entity-centric (GAAMA 2603.27910): nodes are typed\n10:     (person / project / concept / tool / preference / fact), which kills the\n11:     \"mega-hub\" dilution Letta/Graphiti hit with one entity connected to\n12:     everything.\n13:   - BI-TEMPORAL edges (Graphiti 2501.13956): `valid_from/valid_until` (when\n14:     the fact is true in the world) + `learned_at` (when we learned it).\n15:   - INCREMENTAL construction (TG-RAG 2510.13590, iText2KG 2409.03284): merge\n16:     only, no full re-index; entity resolution via aliases, never blind merges.\n17:   - SUPERSEDE, never delete (Write-Time Gating 2603.15994, SSGM 2603.11768):\n18:     contradicting edges are marked superseded with the new one taking over;\n19:     history preserved for audit.\n20:   - WRITE-TIME GATING (2603.15994, D-MEM 2603.14597): routine/salience-weak\n21:     facts never touch the graph; surprises and contradictions do. The biggest\n22:     token saver in the literature.\n23:   - PROVENANCE on every edge (MemORAI 2605.01386): each edge carries the\n24:     evidence text + source, which is exactly what the claim-audit layer needs.\n25: \n26: Storage: headless SQLite at `memory/graph/graph.sqlite` — reachable by the\n27: sleep-time curator directly (no MCP dependency). Schema below.\n28: \n29: Usage:\n30:   graph_memory.py add <subj> <pred> <obj> --type subj_type --evidence \"...\"\n31:                        [--source X] [--confidence 0.0-1.0] [--strength N]\n32:   graph_memory.py add-bulk <json-file>\n33:   graph_memory.py query <entity-or-concept> [--hops N] [--latest-only]\n34:   graph_memory.py resolve <name>\n35:   graph_memory.py neighbors <entity>\n36:   graph_memory.py stats\n37:   graph_memory.py superseded-by <subj> <pred> <obj>  (manual conflict flag)\n38: \"\"\"\n39: \n40: import argparse\n41: import json\n42: import os\n43: import sqlite3\n44: import sys\n45: from collections import deque\n46: from datetime import datetime, timezone\n47: \n48: _SD = os.path.dirname(os.path.abspath(__file__))\n49: if _SD not in sys.path:\n50:     sys.path.insert(0, _SD)\n51: import memory_env\n52: \n53: MEM_DIR = memory_env.memory_dir()\n54: GRAPH_DIR = os.path.join(MEM_DIR, \"graph\")\n55: DB_PATH = os.path.join(GRAPH_DIR, \"graph.sqlite\")\n56: \n57: # Fixed predicate vocabulary — schema drift is a researched failure mode, so we\n58: # constrain the set of relationship types we accept. Unknown preds are refused\n59: # (the extractor maps free text onto this set).\n60: PREDICATES = {\n61:     \"works_on\", \"works_at\", \"teaches\", \"manages\", \"uses\", \"prefers\",\n62:     \"lives_in\", \"located_in\", \"has_role\", \"part_of\", \"leads\", \"builds\",\n63:     \"develops\", \"created\", \"interested_in\", \"knows\", \"collaborates_with\",\n64:     \"owned_by\", \"reports_to\", \"supports\", \"runs\", \"tracks\", \"related_to\",\n65:     \"based_on\", \"happens_on\", \"started_on\", \"ended_on\", \"responds_to\",\n66:     \"struggles_with\", \"likes\", \"dislikes\", \"avoided_by\", \"goal_of\",\n67: }\n68: \n69: # Node types.\n70: NODE_TYPES = {\"person\", \"project\", \"concept\", \"tool\", \"preference\",\n71:               \"organization\", \"place\", \"event\", \"skill\", \"artefact\"}\n72: \n73: # Confidence: evidence-gated (EvoKG-style f(frequency, recency, source_cred)).\n74: # We fold the curator's strength (0-5) into a 0-1 confidence.\n75: DEFAULT_CONF = 0.7\n76: \n77: \n78: def now_iso():\n79:     return datetime.now(timezone.utc).isoformat(timespec=\"seconds\")\n80: \n81: \n82: def connect():\n83:     os.makedirs(GRAPH_DIR, exist_ok=True)\n84:     db = sqlite3.connect(DB_PATH)\n85:     try:\n86:         db.row_factory = sqlite3.Row\n87:         db.executescript(\"\"\"\n88:         CREATE TABLE IF NOT EXISTS entities (\n89:             id INTEGER PRIMARY KEY AUTOINCREMENT,\n90:             name TEXT NOT NULL UNIQUE,\n91:             type TEXT NOT NULL DEFAULT 'concept',\n92:             summary TEXT DEFAULT '',\n93:             created_at TEXT NOT NULL\n94:         );\n95:         CREATE TABLE IF NOT EXISTS aliases (\n96:             entity_id INTEGER NOT NULL,\n97:             alias TEXT NOT NULL,\n98:             UNIQUE(entity_id, alias),\n99:Line truncated
+{"type":"tool_use","timestamp":1788953485038,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"type":"tool","tool":"read","callID":"call_104f69117b914e96981770f7","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/research/issue-163/outward.json"},"output":"<path>/mnt/workdrive/issue161-harness/research/issue-163/outward.json</path>\n<type>file</type>\n<content>\n1: {\n2:   \"stage\": \"OUTWARD\",\n3:   \"process_id\": \"research-163-r1\",\n4:   \"issue\": 163,\n5:   \"round\": 1,\n6:   \"subquestion\": \"Address: Temporal graph backend spike: Neo4j vs FalkorDB (LadybugDB experimental; Graphiti as reference)\",\n7:   \"discovery\": {\n8:     \"queries\": [\n9:       {\n10:         \"id\": \"Q1\",\n11:         \"tool\": \"webfetch (DuckDuckGo HTML)\",\n12:         \"query\": \"neo4j vs falkordb graph database benchmark comparison\",\n13:         \"receipt\": \"fetched OK; 10 results returned inline\"\n14:       },\n15:       {\n16:         \"id\": \"Q2\",\n17:         \"tool\": \"webfetch (DuckDuckGo HTML)\",\n18:         \"query\": \"graphiti zep temporal knowledge graph agent memory neo4j falkordb\",\n19:         \"receipt\": \"fetched OK; 10 results returned inline\"\n20:       },\n21:       {\n22:         \"id\": \"Q3\",\n23:         \"tool\": \"webfetch (DuckDuckGo HTML)\",\n24:         \"query\": \"ladybugdb graph database kuzu fork\",\n25:         \"receipt\": \"fetched OK; 10 results returned inline\"\n26:       },\n27:       {\n28:         \"id\": \"Q4\",\n29:         \"tool\": \"webfetch (DuckDuckGo HTML)\",\n30:         \"query\": \"falkordb redisgraph successor cypher features github\",\n31:         \"receipt\": \"fetched OK; 10 results returned inline\"\n32:       },\n33:       {\n34:         \"id\": \"Q5\",\n35:         \"tool\": \"webfetch (DuckDuckGo HTML)\",\n36:         \"query\": \"neo4j temporal versioning bitemporal cypher valid time\",\n37:         \"receipt\": \"fetched OK; 10 results returned inline\"\n38:       }\n39:     ],\n40:     \"sources_discovered\": [\n41:       { \"id\": \"O1\", \"url\": \"https://aimultiple.com/graph-databases\", \"class\": \"external (independent benchmark, updated 2026-04-15)\", \"note\": \"SELECTED and read\" },\n42:       { \"id\": \"O2\", \"url\": \"https://www.falkordb.com/blog/graph-database-performance-benchmarks-falkordb-vs-neo4j/\", \"class\": \"external (vendor blog, pub 2024-12-02, updated 2026-08-23)\", \"note\": \"SELECTED and read\" },\n43:       { \"id\": \"O3\", \"url\": \"https://www.puppygraph.com/blog/falkordb-vs-neo4j\", \"class\": \"external (competing-vendor comparison)\", \"note\": \"not selected — competing vendor has stake in the comparison\" },\n44:       { \"id\": \"O4\", \"url\": \"https://knodegraph.com/blog/falkordb-vs-neo4j/\", \"class\": \"external (third-party blog w/ 2026 benchmarks)\", \"note\": \"not selected — O1 covers the independent-benchmark slot with fuller methodology\" },\n45:       { \"id\": \"O5\", \"url\": \"https://github.com/FalkorDB/benchmark\", \"class\": \"repo (vendor benchmark harness)\", \"note\": \"SELECTED; README 404 on master and main; repo metadata read via GitHub API instead\" },\n46:       { \"id\": \"O6\", \"url\": \"https://www.plushcap.com/content/falkordb/blog/falkordb-falkordb-vs-neo4j-graph-database-performance-benchmarks\", \"class\": \"external (mirror of O2)\", \"note\": \"not selected — duplicate\" },\n47:       { \"id\": \"O7\", \"url\": \"https://inferensys.com/differences/neuro-symbolic-ai-frameworks/knowledge-graph-construction-tools/neo4j-vs-falkordb\", \"class\": \"external (aggregator comparison)\", \"note\": \"not selected\" },\n48:       { \"id\": \"O8\", \"url\": \"https://inferensys.com/differences/ai-software-factory-platforms/code-knowledge-graph-systems/neo4j-vs-falkordb-for-code-graphs\", \"class\": \"external (aggregator comparison)\", \"note\": \"not selected\" },\n49:       { \"id\": \"O9\", \"url\": \"https://3nuggets.io/compare-neo4j-vs-falkordb\", \"class\": \"external (practitioner fit comparison)\", \"note\": \"not selected\" },\n50:       { \"id\": \"O10\", \"url\": \"https://github.com/getzep/graphiti\", \"class\": \"repo (Graphiti primary)\", \"note\": \"SELECTED and read (README via raw.githubusercontent.com/main)\" },\n51:       { \"id\": \"O11\", \"url\": \"https://neo4j.com/blog/developer/graphiti-knowledge-graph-memory/\", \"class\": \"external (Neo4j official blog on Graphiti)\", \"note\": \"not selected — O10 is primary\" },\n52:       { \"id\": \"O12\", \"url\": \"https://docs.falkordb.com/agentic-memory/graphiti\", \"class\": \"external (FalkorDB vendor docs)\", \"note\": \"not selected\" },\n53:       { \"id\": \"O13\", \"url\": \"https://github.com/Memory-Agents/graphiti/\", \"class\": \"repo (mirror)\", \"note\": \"not selected — duplicate of O10\" },\n54:       { \"id\": \"O14\", \"url\": \"https://codex.danielvaughan.com/2026/03/30/graphiti-agent-memory-store/\", \"class\": \"external (practitioner Line truncated
+{"type":"tool_use","timestamp":1788953485040,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"type":"tool","tool":"read","callID":"call_5d82ba99eff74391b4ea244f","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/research/issue-163/applicability.json"},"output":"<path>/mnt/workdrive/issue161-harness/research/issue-163/applicability.json</path>\n<type>file</type>\n<content>\n1: {\n2:   \"stage\": \"APPLICABILITY\",\n3:   \"issue\": 163,\n4:   \"round\": 1,\n5:   \"process_id\": \"research-163-r1\",\n6:   \"grounding\": {\n7:     \"inward_claims_used\": [\"I3\", \"I1\", \"I4\", \"I5\"],\n8:     \"rune_reality\": \"src/rune/graph_memory.py is Rune's entire graph surface: a headless SQLite tier at memory/graph/graph.sqlite (no external graph DB dependency). Schema (lines 101-116) already implements: bi-temporal edges (valid_from/valid_until + learned_at), supersede-never-delete with status/superseded_by, per-edge provenance (evidence/source), confidence-gated writes (strength<3 gated out), typed concept-mediated nodes, and alias-based entity resolution. Query is name/alias/substring entry point + BFS over status='active' edges.\",\n9:     \"load_bearing_fact\": \"The dossier's repo_grounding_note and Graphiti (E17) confirm temporal semantics live at the framework layer above any backend. Rune already occupies that layer over SQLite. Neo4j and FalkorDB would be backends BELOW a layer Rune already owns, and neither offers native temporal versioning (E27, E28) - Rune's schema is already ahead of both on the spike's titular dimension.\"\n10:   },\n11:   \"candidates\": [\n12:     {\n13:       \"id\": \"C1\",\n14:       \"candidate\": \"Neo4j as replacement graph backend\",\n15:       \"source_ids\": [\"O1\", \"O2\", \"O38\", \"O41\"],\n16:       \"classification\": \"CONFLICTS_WITH_RUNE\",\n17:       \"integration_point\": \"Would replace src/rune/graph_memory.py's SQLite tier (memory/graph/graph.sqlite) with a server-backed Neo4j deployment reachable from curator.py / sleep_time.py.\",\n18:       \"benefit\": \"Deepest ecosystem, best planner on heavy aggregations (E3), mature tooling (E8).\",\n19:       \"cost\": \"Server + JVM process to operate; ~2.7GB heap for a 381K-node graph, ~5.2GB process RSS (E6) - two orders of magnitude above Rune's sub-1M-entity regime; 90ms cold start vs embedded alternatives (E4).\",\n20:       \"architectural_fit\": \"Poor. Rune is embedded/local-first with zero external service dependencies (I3: 'reachable by the sleep-time curator directly, no MCP dependency'). A networked JVM server reverses that posture. No source benchmarks Rune's single-node regime (dossier limitation #2).\",\n21:       \"authority_implications\": \"Introduces an external service and credentials into the memory tier; curator/sleep-time write authority would route through a network daemon instead of a local file.\",\n22:       \"risks\": \"Licensing (Community vs Enterprise constraints unevidenced, dossier limitation #5); no native temporal versioning - the spike's core dimension (E28-E30); migration cost for zero evidenced benefit at Rune's scale.\",\n23:       \"required_adaptation\": \"None - rejection is the correct disposition.\",\n24:       \"evidence\": [\"E2\", \"E3\", \"E4\", \"E6\", \"E8\", \"E27\", \"E28\", \"E29\"]\n25:     },\n26:     {\n27:       \"id\": \"C2\",\n28:       \"candidate\": \"FalkorDB as replacement graph backend\",\n29:       \"source_ids\": [\"O1\", \"O2\", \"O5\", \"O29\", \"O10\"],\n30:       \"classification\": \"CONFLICTS_WITH_RUNE\",\n31:       \"integration_point\": \"Would replace the SQLite tier; only embedded path is Graphiti's falkordblite extra (redislite-based, Python 3.12+) per E16.\",\n32:       \"benefit\": \"Strong concurrent throughput and low latency at scale (E2, E3, E9), implicit indexing (E5), GraphRAG positioning (E10).\",\n33:       \"cost\": \"Server-shaped: Redis 7.4 module, own container/ports, min 4GB RAM / 16GB recommended (E12, E25, E26). SSPLv1 core license (E25). Rust core rewrite (E11) resets part of the maturity story (dossier contradiction #3).\",\n34:       \"architectural_fit\": \"Poor. The headline advantages (6.7x throughput, p50/p99 wins) were measured on 381K-804K-element graphs under 8-32 thread concurrency (E1, E9) - not Rune's regime (single-node, sub-1M entities, agent-local). Vendor magnitudes are marketing-adjacent (dossier contradiction #1; O5 benchmark harness README unverifiable, E13).\",\n35:       \"authority_implications\": \"A Redis server in the memory path; even falkordblite drags in a redislite dependency and a Python 3.12 floor for a lateral move from SQLite.\",\n36:       \"risks\": \"RedisGraph lineage EOL'd Jan 2025 (dossier contradiction #3); no evidenced FalkorDB-native temporal features (dossier limitation #4); license incompatibility with Rune's MIT-family posture.\",\n37:       \"required_adaptation\": \"None - rejection is the correct disposition.\",\n38:       \"evidence\": [\Line truncated
+{"type":"step_finish","timestamp":1788953485067,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085efdef0001I7iUA24Cj","reason":"tool-calls","snapshot":"7f44c901fbeaeaeffe91ef6a64bd139fc86a06a3","messageID":"msg_g001a085efad380013M8SX2T8K","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","type":"step-finish","tokens":{"total":33491,"input":4348,"output":139,"reasoning":140,"cache":{"write":0,"read":28864}},"cost":0}}
+{"type":"step_start","timestamp":1788953491295,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085eff75d001MqxPOtMMv","messageID":"msg_g001a085efdf2c001f54mSaXmz","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","snapshot":"3e9cf3c444aed3a716a631814ecd2cd1b15f9d80","type":"step-start"}}
+{"type":"text","timestamp":1788953649717,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085f25394001Lu1reehSy","messageID":"msg_g001a085efdf2c001f54mSaXmz","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","type":"text","text":"I have the source and the two prior dossiers. The applicability stage's `next_stage_hint` explicitly asks ADVERSARIAL to attack C5's interval semantics and C6's write amplification — I'll go further than that. Now I need the INNOVATION stage output, the task tree, and the repo's constraint documents (authority map, rebuildable-projections, P0/P1, memory_selection ownership) to attack against.","time":{"start":1788953645972,"end":1788953649715}}}
+{"type":"tool_use","timestamp":1788953649731,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"type":"tool","tool":"read","callID":"call_7dfad59741464e799a1ae5f0","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/research/issue-163/task_tree.json"},"output":"<path>/mnt/workdrive/issue161-harness/research/issue-163/task_tree.json</path>\n<type>file</type>\n<content>\n1: {\n2:   \"issue\": 163,\n3:   \"round\": 1,\n4:   \"current_stage\": \"ADVERSARIAL\",\n5:   \"completed_stages\": [\n6:     \"ISSUE\",\n7:     \"INWARD\",\n8:     \"OUTWARD\",\n9:     \"APPLICABILITY\",\n10:     \"INNOVATION\"\n11:   ],\n12:   \"artifacts\": {\n13:     \"ISSUE\": {\n14:       \"contract\": {\n15:         \"issue\": 163,\n16:         \"title\": \"Temporal graph backend spike: Neo4j vs FalkorDB (LadybugDB experimental; Graphiti as reference)\",\n17:         \"question_type\": \"mixed\",\n18:         \"sub_questions\": [\n19:           \"Address: Temporal graph backend spike: Neo4j vs FalkorDB (LadybugDB experimental; Graphiti as reference)\"\n20:         ],\n21:         \"required_stages\": [\n22:           \"ISSUE\",\n23:           \"INWARD\",\n24:           \"OUTWARD\",\n25:           \"ADVERSARIAL\",\n26:           \"INNOVATION\",\n27:           \"SYNTHESIS\",\n28:           \"QUALIFY\"\n29:         ],\n30:         \"skipped_stages\": {\n31:           \"APPLICABILITY\": \"No OUTWARD research to ground against Rune.\"\n32:         },\n33:         \"evidence_classes\": [\n34:           \"repo\",\n35:           \"external\"\n36:         ],\n37:         \"sufficient_evidence\": \"\\u22652 code-path citations for INWARD; \\u22652 unique URLs for OUTWARD (if required)\",\n38:         \"expected_artifact\": \"synthesis.json\",\n39:         \"ambiguous\": false,\n40:         \"needs_mimo\": false,\n41:         \"source\": \"deterministic\"\n42:       },\n43:       \"deterministic\": true\n44:     },\n45:     \"INWARD\": {\n46:       \"context\": {\n47:         \"keywords\": [\n48:           \"temporal\",\n49:           \"graph\",\n50:           \"backend\",\n51:           \"spike\",\n52:           \"neo\",\n53:           \"falkordb\",\n54:           \"ladybugdb\",\n55:           \"experimental\",\n56:           \"graphiti\",\n57:           \"reference\",\n58:           \"plain\",\n59:           \"summary\",\n60:           \"architecture_frontier_handoff\",\n61:           \"compare\",\n62:           \"graph\",\n63:           \"backends\",\n64:           \"rune\",\n65:           \"structural\",\n66:           \"projection\",\n67:           \"episodes\"\n68:         ],\n69:         \"umbrella_matches\": [\n70:           {\n71:             \"umbrella\": \"memory\",\n72:             \"module\": \"graph_memory\",\n73:             \"keyword\": \"graph\"\n74:           },\n75:           {\n76:             \"umbrella\": \"memory\",\n77:             \"module\": \"graph_shard_bridge\",\n78:             \"keyword\": \"graph\"\n79:           },\n80:           {\n81:             \"umbrella\": \"orchestration\",\n82:             \"module\": \"rune_operator\",\n83:             \"keyword\": \"rune\"\n84:           },\n85:           {\n86:             \"umbrella\": \"orchestration\",\n87:             \"module\": \"rune_tui\",\n88:             \"keyword\": \"rune\"\n89:           },\n90:           {\n91:             \"umbrella\": \"orchestration\",\n92:             \"module\": \"rune_graphic\",\n93:             \"keyword\": \"graph\"\n94:           },\n95:           {\n96:             \"umbrella\": \"orchestration\",\n97:             \"module\": \"rune_spinner\",\n98:             \"keyword\": \"rune\"\n99:           },\n100:           {\n101:             \"umbrella\": \"orchestration\",\n102:             \"module\": \"rune_profiler\",\n103:             \"keyword\": \"rune\"\n104:           }\n105:         ],\n106:         \"candidate_files\": [\n107:           \"src/rune/curator.py\",\n108:           \"src/rune/rune_tui.py\",\n109:           \"src/rune/graph_memory.py\",\n110:           \"src/rune/sleep_time.py\",\n111:           \"src/rune/elastic_cognition.py\",\n112:           \"src/rune/rune_operator.py\",\n113:           \"src/rune/rune_profiler.py\",\n114:           \"src/rune/warm_router.py\",\n115:           \"src/rune/abstraction.py\",\n116:           \"src/rune/canary_native.py\",\n117:           \"src/rune/canary_p0_04.py\",\n118:           \"src/rune/canary_p1_07.py\",\n119:           \"src/rune/complexity_scorer.py\",\n120:           \"src/rune/identity_anchors.py\",\n121:           \"src/rune/memory_consolidation.py\"\n122:         ],\n123:         \"candidate_tests\": [\n124:           \"tests/test_retrieval_benchmark.py\",\n125:           \"tests/test_orchestration_memory_synthesis.py\",\n126:           \"tests/test_p1_03_memory_selection.py\",\n127:           \"tests/test_p1_06_model_routing.py\",\n128:           \"tests/test_p1_07_runtime_objects.py\",\n129:           \"tests/test_version_converLine truncated
+{"type":"tool_use","timestamp":1788953649733,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"type":"tool","tool":"read","callID":"call_f93f8f24940c48c8a259428e","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/research/issue-163/innovation.json"},"output":"<path>/mnt/workdrive/issue161-harness/research/issue-163/innovation.json</path>\n<type>file</type>\n<content>\n1: {\n2:   \"stage\": \"INNOVATION\",\n3:   \"issue\": 163,\n4:   \"round\": 1,\n5:   \"process_id\": \"research-163-r1\",\n6:   \"route\": \"INNOVATION_WARRANTED\",\n7:   \"conclusion\": \"ADAPT\",\n8:   \"conclusion_rationale\": \"The standard mechanism (SQLite graph tier queried via status='active' only, exact/alias/substring entry resolution) is NOT sufficient: it cannot read the bi-temporal history Rune already persists (every superseded edge is stored but unreachable through query()), and its entry point caps practical recall on paraphrase/typo. No standard drop-in closes either gap. However, the warranted innovation is strictly adapted-and-compositional, not novel-for-its-own-sake: NEP-001's AS-OF WHERE-convention (E28-E30) and Graphiti's hybrid-retrieval entry tier (E18) are adapted onto Rune's existing framework-over-SQLite layer (which already implements the semantic model 1:1, E14/E17 — C4), producing a 'temporal+lexical query layer over graph.sqlite'. Backend migration is explicitly out of scope (C1/C2/C3 rejected or deferred at APPLICABILITY; C9 tracked, not proposed).\",\n9:   \"candidates\": [\n10:     {\n11:       \"id\": \"INN-1\",\n12:       \"category\": \"ADAPT\",\n13:       \"proposal\": \"A unified temporal+lexical query layer over the existing graph.sqlite, inside src/rune/graph_memory.py, with zero schema or backend change. Two read-layer components that share one integration surface (query(), lines 217-284): (1) TEMPORAL — an --as-of <iso8601> parameter that replaces the status='active' filter with valid_from <= t AND (valid_until IS NULL OR t < valid_until) AND learned_at <= t, applied identically to the outgoing BFS frontier (line 254) and the incoming-edge query (line 275); BFS structure unchanged; default behavior (no flag) keeps the current active-only fast path. (2) LEXICAL — a SQLite FTS5 virtual table over entities(name, summary) and aliases(alias), inserted as a fallback tier in entity resolution (lines 224-237) with lookup order exact -> alias -> FTS5 BM25 -> substring-LIKE; index maintained on the existing entity/alias write path (resolve_entity, add_edge) in the same DB file. Full embedding tier deliberately omitted — model dependencies are disproportionate to Rune's sub-1M regime.\",\n14:       \"derived_from\": [\"E28\", \"E29\", \"E30\", \"E18\", \"E14\", \"E17\", \"E27\"],\n15:       \"source_ids\": [\"O38\", \"O41\", \"O10\", \"O1\"],\n16:       \"composition_of\": [\n17:         \"C5 (NEP-001 Phase 1 'AS OF' syntactic sugar, APPLICABLE_WITH_ADAPTATION)\",\n18:         \"C6 (Graphiti hybrid retrieval, reduced to its lexical BM25 tier, APPLICABLE_WITH_ADAPTATION)\",\n19:         \"Rune's existing bi-temporal edges schema + supersede-not-delete history (already integrated per C4)\"\n20:       ],\n21:       \"novelty\": \"compositional\",\n22:       \"expected_gain\": \"Two material capabilities the status quo lacks, both read-only on data already on disk: (a) time-travel queries — every contradiction ever superseded becomes queryable as-of any past timestamp, closing the exact gap NEP-001 documents (E29: hand-written temporal WHERE clauses are error-prone and do not compose; E30: Phase 1 is low complexity and delivers most of the value); (b) recall lift at the entry point — paraphrase/typo/alternate-naming terms that currently fail resolution fall through to BM25, which Graphiti credits for its sub-second retrieval (E18), without any new service or dependency (FTS5 is in-process SQLite). Combined, the graph's stored history and practical recall stop being capped by the two read-layer shortcuts.\",\n23:       \"risks\": \"(1) learned_at is a transaction-time proxy, not true bitemporality (E30 defers the real thing at 'Very high' complexity) — must be documented as as-of-knowledge approximation. (2) Half-open-interval and NULL-as-open-ended pitfalls are the documented failure mode of exactly this convention (E29) — they become a mandatory test checklist, not an afterthought. (3) FTS5 write amplification on add-bulk paths and index/tokenizer decisions. (4) BM25 ranking quality is evidenced only via Graphiti's claim, not measured at Rune's regime (dossier limitation #7) — hence the kill test below. (5) No Rune-regime benchmark exists (dossier limitation #2), so gains are predicted, not measured, until the kill test runs.\",\n24:       \"kill_test\": \"Rune-local benchmark on the real curator vocabulary and a seeded history: (a) TEMPORAL — if querying as-of realistic historical timestamps returns fact sets identical to the active-only set for every t Line truncated
+{"type":"tool_use","timestamp":1788953649735,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"type":"tool","tool":"read","callID":"call_1ecfaf351dc944319a96a433","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/src/rune/memory_env.py"},"output":"<path>/mnt/workdrive/issue161-harness/src/rune/memory_env.py</path>\n<type>file</type>\n<content>\n1: #!/usr/bin/env python3\n2: \"\"\"memory_env.py — portable path resolution for the memory system.\n3: \n4: Every path in the package is derived from a small set of roots that can be\n5: overridden via environment variables, so the same code runs on ANY machine:\n6: \n7:   RUNE_HOME             Rune home directory (default /mnt/workdrive/rune)\n8:   RUNE_MEMORY_DIR       memory data root (default <home>/memory)\n9:   RUNE_SCRIPTS_DIR      where the scripts live (default <home>/src/rune)\n10:   RUNE_STORE_DB         explicit store path (default <memory>/store/memory.db)\n11: \n12: Rules:\n13:   - Never hardcode a user path; always go through these helpers.\n14:   - Scripts invoked as `python <script>` will use sys.executable for child\n15:     processes (same venv), which is portable by construction.\n16: \"\"\"\n17: \n18: import os\n19: import shutil\n20: import sys\n21: \n22: \n23: def expand(p):\n24:     \"\"\"expanduser + expandvars, for env values that may contain ~ or $HOME.\"\"\"\n25:     if not p:\n26:         return p\n27:     return os.path.expanduser(os.path.expandvars(p))\n28: \n29: \n30: def rune_home():\n31:     \"\"\"Return the Rune home directory.\"\"\"\n32:     return expand(os.environ.get(\"RUNE_HOME\", \"/mnt/workdrive/rune\"))\n33: \n34: \n35: def memory_dir():\n36:     \"\"\"Return the memory data directory.\"\"\"\n37:     return expand(os.environ.get(\n38:         \"RUNE_MEMORY_DIR\",\n39:         os.path.join(rune_home(), \"memory\")))\n40: \n41: \n42: def scripts_dir():\n43:     \"\"\"Return the scripts directory.\"\"\"\n44:     return expand(os.environ.get(\n45:         \"RUNE_SCRIPTS_DIR\",\n46:         os.path.dirname(os.path.abspath(__file__))))\n47: \n48: \n49: def store_db():\n50:     \"\"\"Return the path to the memory store database.\"\"\"\n51:     return expand(os.environ.get(\n52:         \"RUNE_STORE_DB\",\n53:         os.path.join(memory_dir(), \"store\", \"memory.db\")))\n54: \n55: \n56: def config_dir():\n57:     \"\"\"Return the config directory.\"\"\"\n58:     return expand(os.environ.get(\n59:         \"RUNE_CONFIG_DIR\",\n60:         os.path.join(rune_home(), \"config\")))\n61: \n62: \n63: def python_bin():\n64:     \"\"\"Return the Python interpreter path.\"\"\"\n65:     return sys.executable or shutil.which(\"python3\") or \"python3\"\n66: \n67: \n68: # Plugin metadata for microkernel discovery\n69: PLUGIN = {\n70:     \"name\": \"memory_env\",\n71:     \"version\": \"1.0.0\",\n72:     \"description\": \"Portable path resolution for the memory system\",\n73:     \"capabilities\": [\"memory_env\"],\n74:     \"hooks\": [],\n75: }\n76: \n77: \n78: def handle_hook(event, data=None):\n79:     \"\"\"Hook handler for microkernel integration.\"\"\"\n80:     return None\n\n(End of file - total 80 lines)\n</content>","metadata":{"preview":"#!/usr/bin/env python3\n\"\"\"memory_env.py — portable path resolution for the memory system.\n\nEvery path in the package is derived from a small set of roots that can be\noverridden via environment variables, so the same code runs on ANY machine:\n\n  RUNE_HOME             Rune home directory (default /mnt/workdrive/rune)\n  RUNE_MEMORY_DIR       memory data root (default <home>/memory)\n  RUNE_SCRIPTS_DIR      where the scripts live (default <home>/src/rune)\n  RUNE_STORE_DB         explicit store path (default <memory>/store/memory.db)\n\nRules:\n  - Never hardcode a user path; always go through these helpers.\n  - Scripts invoked as `python <script>` will use sys.executable for child\n    processes (same venv), which is portable by construction.\n\"\"\"\n\nimport os\nimport shutil\nimport sys","truncated":false,"loaded":[]},"title":"src/rune/memory_env.py","time":{"start":1788953649718,"end":1788953649734}},"id":"prt_g001a085f26204001YBegcfUjf","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","messageID":"msg_g001a085efdf2c001f54mSaXmz"}}
+{"type":"tool_use","timestamp":1788953649752,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"type":"tool","tool":"grep","callID":"call_6de7fe5fa5f2429f9553fd6f","state":{"status":"completed","input":{"path":"/mnt/workdrive/issue161-harness","pattern":"memory_selection|rebuildable|authority map|P0/P1"},"output":"Found 84 matches\n/mnt/workdrive/issue161-harness/research/issue-163/stage_ADVERSARIAL.events.jsonl:\n  Line 15: {\"type\":\"text\",\"timestamp\":1788953649717,\"sessionID\":\"ses_-ffe5f7a12c34effeSzvjfsvWr\",\"part\":{\"id\":\"prt_g001a085f25394001Lu1reehSy\",\"messageID\":\"msg_g001a085efdf2c001f54mSaXmz\",\"sessionID\":\"ses_-ffe5f7a12c34effeSzvjfsvWr\",\"type\":\"text\",\"text\":\"I have the source and the two prior dossiers. The applicability stage's `next_stage_hint` explicitly asks ADVERSARIAL to attack C5's interval semantics and C6's write amplification — I'll go further than that. Now I need the INNOVATION stage output, the task tree, and the repo's constraint documents (authority map, rebuildable-projections, P0/P1, memory_selection ownership) to attack against.\",\"time\":{\"start\":1788953645972,\"end\":1788953649715}}}\n\n\n/mnt/workdrive/issue161-harness/research/issue-163/task_tree.json:\n  Line 126:           \"tests/test_p1_03_memory_selection.py\",\n\n\n/mnt/workdrive/issue161-harness/scripts/research_stage_executor.py:\n  Line 659:             \"- Rune constraint violations: authority map, rebuildable-projections rule,\",\n\n  Line 660:             \"  P0/P1 boundaries, memory_selection ownership.\",\n\n\n/mnt/workdrive/issue161-harness/research/issue-163/stage_APPLICABILITY.events.jsonl:\n  Line 9: {\"type\":\"tool_use\",\"timestamp\":1788951418913,\"sessionID\":\"ses_-ffe5f7a2fff97ffeShe3jrJEB\",\"part\":{\"type\":\"tool\",\"tool\":\"read\",\"callID\":\"call_9f981917f1c7420084d6cfeb\",\"state\":{\"status\":\"completed\",\"input\":{\"file_path\":\"research/issue-163/task_tree.json\"},\"output\":\"<path>/mnt/workdrive/issue161-harness/research/issue-163/task_tree.json</path>\\n<type>file</type>\\n<content>\\n1: {\\n2:   \\\"issue\\\": 163,\\n3:   \\\"round\\\": 1,\\n4:   \\\"current_stage\\\": \\\"APPLICABILITY\\\",\\n5:   \\\"completed_stages\\\": [\\n6:     \\\"ISSUE\\\",\\n7:     \\\"INWARD\\\",\\n8:     \\\"OUTWARD\\\"\\n9:   ],\\n10:   \\\"artifacts\\\": {\\n11:     \\\"ISSUE\\\": {\\n12:       \\\"contract\\\": {\\n13:         \\\"issue\\\": 163,\\n14:         \\\"title\\\": \\\"Temporal graph backend spike: Neo4j vs FalkorDB (LadybugDB experimental; Graphiti as reference)\\\",\\n15:         \\\"question_type\\\": \\\"mixed\\\",\\n16:         \\\"sub_questions\\\": [\\n17:           \\\"Address: Temporal graph backend spike: Neo4j vs FalkorDB (LadybugDB experimental; Graphiti as reference)\\\"\\n18:         ],\\n19:         \\\"required_stages\\\": [\\n20:           \\\"ISSUE\\\",\\n21:           \\\"INWARD\\\",\\n22:           \\\"OUTWARD\\\",\\n23:           \\\"ADVERSARIAL\\\",\\n24:           \\\"INNOVATION\\\",\\n25:           \\\"SYNTHESIS\\\",\\n26:           \\\"QUALIFY\\\"\\n27:         ],\\n28:         \\\"skipped_stages\\\": {\\n29:           \\\"APPLICABILITY\\\": \\\"No OUTWARD research to ground against Rune.\\\"\\n30:         },\\n31:         \\\"evidence_classes\\\": [\\n32:           \\\"repo\\\",\\n33:           \\\"external\\\"\\n34:         ],\\n35:         \\\"sufficient_evidence\\\": \\\"\\\\u22652 code-path citations for INWARD; \\\\u22652 unique URLs for OUTWARD (if required)\\\",\\n36:         \\\"expected_artifact\\\": \\\"synthesis.json\\\",\\n37:         \\\"ambiguous\\\": false,\\n38:         \\\"needs_mimo\\\": false,\\n39:         \\\"source\\\": \\\"deterministic\\\"\\n40:       },\\n41:       \\\"deterministic\\\": true\\n42:     },\\n43:     \\\"INWARD\\\": {\\n44:       \\\"context\\\": {\\n45:         \\\"keywords\\\": [\\n46:           \\\"temporal\\\",\\n47:           \\\"graph\\\",\\n48: ...\n\n/mnt/workdrive/issue161-harness/research/issue-163/stage_OUTWARD.events.jsonl:\n  Line 20: {\"type\":\"tool_use\",\"timestamp\":1788950613864,\"sessionID\":\"ses_-ffe5f7a3e2805ffeYaOOBiQE1\",\"part\":{\"type\":\"tool\",\"tool\":\"bash\",\"callID\":\"call_4b5521c9a4ca454caa492b08\",\"state\":{\"status\":\"completed\",\"input\":{\"command\":\"python3 -c \\\"\\nimport json\\nt=json.load(open('/mnt/workdrive/issue161-harness/research/issue-163/task_tree.json'))\\nprint(json.dumps(t, indent=1)[:4000])\\n\\\"\",\"description\":\"Read issue-163 task tree JSON\"},\"output\":\"{\\n \\\"issue\\\": 163,\\n \\\"round\\\": 1,\\n \\\"current_stage\\\": \\\"OUTWARD\\\",\\n \\\"completed_stages\\\": [\\n  \\\"ISSUE\\\",\\n  \\\"INWARD\\\"\\n ],\\n \\\"artifacts\\\": {\\n  \\\"ISSUE\\\": {\\n   \\\"contract\\\": {\\n    \\\"issue\\\": 163,\\n    \\\"title\\\": \\\"Temporal graph backend spike: Neo4j vs FalkorDB (LadybugDB experimental; Graphiti as reference)\\\",\\n    \\\"question_type\\\": \\\"mixed\\\",\\n    \\\"sub_questions\\\": [\\n     \\\"AddresLine truncated
+{"type":"step_finish","timestamp":1788953649780,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085f26257001noPhTBQkN","reason":"tool-calls","snapshot":"77ec50e9da7dbc6de01cc65349af49e83ee34f6d","messageID":"msg_g001a085efdf2c001f54mSaXmz","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","type":"step-finish","tokens":{"total":56895,"input":19068,"output":210,"reasoning":4465,"cache":{"write":0,"read":33152}},"cost":0}}
+{"type":"step_start","timestamp":1788953672525,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085f2bb4b001O1nhtvG30","messageID":"msg_g001a085f262af001rZ0ImFwSv","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","snapshot":"1006aee06248f9e11ad0817d04533645799530e5","type":"step-start"}}
+{"type":"text","timestamp":1788953842871,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085f54129001oy5mloUME","messageID":"msg_g001a085f262af001rZ0ImFwSv","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","type":"text","text":"I now have the full candidate chain (C4/C5/C6/C9 → INN-1) and the OUTWARD dossier with its receipts. Several things already look attackable in the source (`valid_until` appears write-dead; supersession keys only on identical triples). Before writing the dossier I need to verify: who actually calls `graph_memory`, whether anything ever writes `valid_until`/`expired`, what `memory_store.py` already does with FTS5 (duplicate-authority check), and the authority-map / rebuildable-projections constraints.","time":{"start":1788953837865,"end":1788953842862}}}
+{"type":"tool_use","timestamp":1788953842885,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"type":"tool","tool":"grep","callID":"call_129013ab350745d9ac5c4b7d","state":{"status":"completed","input":{"path":"/mnt/workdrive/issue161-harness/src/rune","pattern":"graph_memory"},"output":"Found 38 matches\n/mnt/workdrive/issue161-harness/src/rune/rune_tui.py:\n  Line 63: import graph_memory\n\n  Line 1840:             \"graph_memory\",\n\n  Line 2553:             db = graph_memory.connect()\n\n  Line 2555:                 stats = graph_memory.stats(db)\n\n\n/mnt/workdrive/issue161-harness/src/rune/warm_router.py:\n  Line 732:                                      \"graph_memory.py\"),\n\n  Line 739:     # AUDIT FIX 2026-08-16: graph_memory.query returns a LIST of facts ([] for\n\n\n/mnt/workdrive/issue161-harness/src/rune/rune_operator.py:\n  Line 1060: - Graph memory: ~/.config/opencode/memory/graph.db (entities and relationships, query with graph_memory.resolve_entity())\n\n  Line 1068: When asked about connections, I query graph_memory.resolve_entity().\n\n\n/mnt/workdrive/issue161-harness/src/rune/curator.py:\n  Line 1381:                                      \"graph_memory.py\"),\n\n\n/mnt/workdrive/issue161-harness/src/rune/canary_native.py:\n  Line 37:     \"graph_memory\",\n\n  Line 105:     \"graph_memory\": [(\"connect\", {})],\n\n\n/mnt/workdrive/issue161-harness/src/rune/memory_selector.py:\n  Line 362:     \"\"\"Graph source: entity BFS from the task words via graph_memory.query,\n\n  Line 367:         import graph_memory\n\n  Line 369:         import rune.graph_memory as graph_memory  # type: ignore[no-redef]\n\n  Line 371:     db = graph_memory.connect()\n\n  Line 376:             result = graph_memory.query(db, word, hops=1)\n\n  Line 386:             out.append({\"text\": text, \"score\": score, \"kind\": \"graph\", \"source\": \"graph_memory.query\"})\n\n\n/mnt/workdrive/issue161-harness/src/rune/skills/llm-craft/full_audit.py:\n  Line 44:             \"memory_store.py\", \"memory_env.py\", \"warm_neuron_store.py\", \"graph_memory.py\",\n\n\n/mnt/workdrive/issue161-harness/src/rune/graph_memory.py:\n  Line 30:   graph_memory.py add <subj> <pred> <obj> --type subj_type --evidence \"...\"\n\n  Line 32:   graph_memory.py add-bulk <json-file>\n\n  Line 33:   graph_memory.py query <entity-or-concept> [--hops N] [--latest-only]\n\n  Line 34:   graph_memory.py resolve <name>\n\n  Line 35:   graph_memory.py neighbors <entity>\n\n  Line 36:   graph_memory.py stats\n\n  Line 37:   graph_memory.py superseded-by <subj> <pred> <obj>  (manual conflict flag)\n\n  Line 169:         logging.getLogger(\"graph_memory\").warning(\n\n  Line 176:             logging.getLogger(\"graph_memory\").debug(\n\n  Line 388:     \"name\": \"graph_memory\",\n\n  Line 403:         \"graph_memory\",\n\n\n/mnt/workdrive/issue161-harness/src/rune/memory_consolidation.py:\n  Line 431:             import graph_memory\n\n  Line 432:             db = graph_memory.connect()\n\n\n/mnt/workdrive/issue161-harness/src/rune/dependency_tracker.py:\n  Line 41:     \"graph_memory.py\": [\n\n\n/mnt/workdrive/issue161-harness/src/rune/contracts.py:\n  Line 233:         name=\"graph_memory.connect returns connection\",\n\n  Line 234:         module=\"graph_memory\", function=\"connect\",\n\n  Line 239:         name=\"graph_memory.stats callable\",\n\n  Line 240:         module=\"graph_memory\", function=\"stats\",\n\n\n/mnt/workdrive/issue161-harness/src/rune/canary_p0_04.py:\n  Line 99:         \"graph_memory.resolve\",\n\n  Line 118:         \"graph_memory\",\n","metadata":{"matches":38,"truncated":false},"title":"graph_memory","time":{"start":1788953842869,"end":1788953842884}},"id":"prt_g001a085f553440019FgMbRWVh","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","messageID":"msg_g001a085f262af001rZ0ImFwSv"}}
+{"type":"tool_use","timestamp":1788953842887,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"type":"tool","tool":"grep","callID":"call_2c1758d892294c2a9ce08826","state":{"status":"completed","input":{"path":"/mnt/workdrive/issue161-harness/src/rune","pattern":"valid_until"},"output":"Found 16 matches\n/mnt/workdrive/issue161-harness/src/rune/memory_store.py:\n  Line 22:           topic, entities, source, method, status, valid_from, valid_until)\n\n  Line 144:             valid_until TEXT\n\n  Line 509:     valid_until=None,\n\n  Line 542:         \"topic, entities, source, method, status, valid_from, valid_until, \"\n\n  Line 556:             valid_until,\n\n  Line 1263: def update_entry(db, eid, text=None, importance=None, valid_until=None):\n\n  Line 1278:     if valid_until is not None:\n\n  Line 1279:         sets.append(\"valid_until=?\")\n\n  Line 1280:         params.append(valid_until)\n\n\n/mnt/workdrive/issue161-harness/src/rune/graph_memory.py:\n  Line 13:   - BI-TEMPORAL edges (Graphiti 2501.13956): `valid_from/valid_until` (when\n\n  Line 107:             valid_until TEXT,\n\n  Line 201:         INSERT INTO edges (subj_id, pred, obj_id, valid_from, valid_until,\n\n  Line 249:                    ed.valid_from, ed.valid_until, ed.confidence, ed.status,\n\n  Line 261:                 \"from\": r[\"valid_from\"], \"until\": r[\"valid_until\"],\n\n  Line 271:                ed.valid_from, ed.valid_until, ed.confidence, ed.status, ed.source\n\n  Line 281:             \"from\": r[\"valid_from\"], \"until\": r[\"valid_until\"],\n","metadata":{"matches":16,"truncated":false},"title":"valid_until","time":{"start":1788953842871,"end":1788953842886}},"id":"prt_g001a085f55490001UJiyEJypD","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","messageID":"msg_g001a085f262af001rZ0ImFwSv"}}
+{"type":"tool_use","timestamp":1788953842889,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"type":"tool","tool":"grep","callID":"call_25922020fcd54cf08120a446","state":{"status":"completed","input":{"path":"/mnt/workdrive/issue161-harness/src/rune","pattern":"supersed"},"output":"Found 35 matches\n/mnt/workdrive/issue161-harness/src/rune/memory_store.py:\n  Line 2224:         # supersedes when new info replaces old; every decision is receipted.\n\n\n/mnt/workdrive/issue161-harness/src/rune/curator.py:\n  Line 6:   - conflict detection: a new fact superseding an old one records a\n\n  Line 1132:         body = body.replace(old, f\"{old} → (superseded {new})\")\n\n\n/mnt/workdrive/issue161-harness/src/rune/skills/llm-craft/knowledge.md:\n  Line 319: **Pattern:** Explicit state-first memory with supersession tracking. When facts are revised, the memory system must reflect the current state, not a superseded one. StateMem achieves 1.6-1.8x improvement.\n\n\n/mnt/workdrive/issue161-harness/src/rune/tool_protocol.py:\n  Line 154:     status: str  # \"completed\" | \"failed\" | \"superseded\" | \"cancelled\"\n\n\n/mnt/workdrive/issue161-harness/src/rune/orchestration/lifecycle.py:\n  Line 4: retryable_failure, conflict, superseded, or cancelled; retryable_failure\n\n  Line 23:             \"superseded\",\n\n  Line 27:     \"retryable_failure\": frozenset({\"sending\", \"cancelled\", \"superseded\"}),\n\n  Line 31:     \"superseded\": frozenset(),\n\n\n/mnt/workdrive/issue161-harness/src/rune/orchestration/records.py:\n  Line 110:     state: str  # verified | failed | cancelled | superseded\n\n  Line 128:     supersedes: str | None = None\n\n  Line 153:     state: str = \"queued\"  # queued->sending->accepted | retryable_failure | conflict | cancelled | superseded\n\n  Line 231: # completed|failed|cancelled|superseded. The legal edges live in\n\n  Line 240:     \"superseded\",\n\n\n/mnt/workdrive/issue161-harness/src/rune/orchestration/outbox.py:\n  Line 29:         \"superseded\",\n\n\n/mnt/workdrive/issue161-harness/src/rune/orchestration/conversation_state.py:\n  Line 55:     \"created\": frozenset({\"created\", \"running\", \"awaiting_approval\", \"completed\", \"failed\", \"cancelled\", \"superseded\"}),\n\n  Line 56:     \"running\": frozenset({\"running\", \"awaiting_approval\", \"completed\", \"failed\", \"cancelled\", \"superseded\"}),\n\n  Line 57:     \"awaiting_approval\": frozenset({\"awaiting_approval\", \"running\", \"completed\", \"failed\", \"cancelled\", \"superseded\"}),\n\n  Line 61:     \"superseded\": frozenset(),\n\n\n/mnt/workdrive/issue161-harness/src/rune/event_bus.py:\n  Line 52:     \"memory.superseded\": \"Memory entry superseded\",\n\n\n/mnt/workdrive/issue161-harness/src/rune/graph_memory.py:\n  Line 18:     contradicting edges are marked superseded with the new one taking over;\n\n  Line 37:   graph_memory.py superseded-by <subj> <pred> <obj>  (manual conflict flag)\n\n  Line 112:             status TEXT NOT NULL DEFAULT 'active',  -- active|superseded|expired\n\n  Line 113:             superseded_by INTEGER,\n\n  Line 164:       marked superseded and the new one wins — history preserved.\n\n  Line 189:         # Only supersede if new evidence is stronger or different.\n\n  Line 198:         # Supersede: insert new edge FIRST, then mark old as superseded\n\n  Line 207:         db.execute(\"UPDATE edges SET status='superseded', superseded_by=? WHERE id=?\",\n\n\n/mnt/workdrive/issue161-harness/src/rune/abstraction.py:\n  Line 78:             superseded_by INTEGER\n\n  Line 106:             superseded_by INTEGER\n\n  Line 435:     - Archive observations superseded by newer ones\n\n  Line 451:     # Archive superseded observations\n\n  Line 454:         WHERE superseded_by IS NOT NULL AND state='active'\n\n\n/mnt/workdrive/issue161-harness/src/rune/cache.py:\n  Line 126:     \"memory.superseded\": [\"retrieval\", \"warm_digest\"],\n\n\n/mnt/workdrive/issue161-harness/src/rune/behavior.py:\n  Line 57:             supersedes_id INTEGER\n","metadata":{"matches":35,"truncated":false},"title":"supersed","time":{"start":1788953842872,"end":1788953842889}},"id":"prt_g001a085f55494001aOavpCxxi","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","messageID":"msg_g001a085f262af001rZ0ImFwSv"}}
+{"type":"tool_use","timestamp":1788953842895,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"type":"tool","tool":"read","callID":"call_b3569b877ad34992b596b557","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/config/v1_authority_map.json"},"output":"<path>/mnt/workdrive/issue161-harness/config/v1_authority_map.json</path>\n<type>file</type>\n<content>\n1: {\n2:   \"schema_version\": 1,\n3:   \"status\": \"decision-record-not-migration\",\n4:   \"epic\": \"#16\",\n5:   \"issue\": \"#17\",\n6:   \"frozen_reference\": {\n7:     \"tag\": \"v0.42.0\",\n8:     \"commit\": \"98b8a7048455dd1a5c6fe219c114502549b8227c\",\n9:     \"recoverable\": true\n10:   },\n11:   \"v1_branch\": \"v1/p0-01-authority-map\",\n12:   \"invariant\": \"No subsystem may inject model context outside the ContextBroker\",\n13:   \"dispositions\": {\n14:     \"retain-authority\": \"Keep this path as the authority or a primitive owned by the named v1 authority.\",\n15:     \"migrate-adapter\": \"Keep compatibility temporarily, but make it delegate to the named v1 authority.\",\n16:     \"archive-candidate\": \"Remove from the live path after dependency and rollback checks.\",\n17:     \"dormant-until-dependency\": \"Keep installed with zero live authority until its dependency issue activates it.\"\n18:   },\n19:   \"responsibilities\": [\n20:     {\n21:       \"id\": \"conversation_state\",\n22:       \"current_authority\": \"RuneOperator task history plus ephemeral ChannelView.messages\",\n23:       \"v1_owner\": \"ConversationStateRepository\",\n24:       \"dependency_issue\": \"#18\",\n25:       \"migration_rule\": \"Persist messages and continuation once; turn ChannelView and operator history into projections/adapters.\",\n26:       \"current_paths\": [\n27:         {\n28:           \"path\": \"src/rune/rune_tui.py:1012-1065\",\n29:           \"role\": \"Ephemeral visible channel transcript\",\n30:           \"disposition\": \"migrate-adapter\",\n31:           \"evidence\": \"ChannelView initializes and appends self.messages in memory.\"\n32:         },\n33:         {\n34:           \"path\": \"src/rune/rune_operator.py:278-294\",\n35:           \"role\": \"Recent conversation reconstructed from completed RuneTask records\",\n36:           \"disposition\": \"migrate-adapter\",\n37:           \"evidence\": \"_conversation_messages converts completed tasks into user/assistant pairs.\"\n38:         },\n39:         {\n40:           \"path\": \"src/rune/response_adapter.py:25-45\",\n41:           \"role\": \"Unused alternative response/conversation event envelope\",\n42:           \"disposition\": \"dormant-until-dependency\",\n43:           \"evidence\": \"RuneResponse exists but does not own the ordinary TUI turn.\"\n44:         }\n45:       ]\n46:     },\n47:     {\n48:       \"id\": \"task_state\",\n49:       \"current_authority\": \"RuneOperator RuneState with competing task ledgers\",\n50:       \"v1_owner\": \"TaskStateRepository\",\n51:       \"dependency_issue\": \"#18\",\n52:       \"migration_rule\": \"One canonical task identity persists until explicit complete, cancel, replace, or amend transitions.\",\n53:       \"current_paths\": [\n54:         {\n55:           \"path\": \"src/rune/rune_operator.py:100-177\",\n56:           \"role\": \"Live RuneTask/RuneState persisted to operator.json\",\n57:           \"disposition\": \"migrate-adapter\",\n58:           \"evidence\": \"RuneState owns current_task, tasks, and pending approval state.\"\n59:         },\n60:         {\n61:           \"path\": \"src/rune/task_persist.py:27-130\",\n62:           \"role\": \"Separate JSON task ledger\",\n63:           \"disposition\": \"migrate-adapter\",\n64:           \"evidence\": \"Maintains persisted.json independently of RuneOperator.\"\n65:         },\n66:         {\n67:           \"path\": \"src/rune/work_manager.py:59-100\",\n68:           \"role\": \"Separate work-item/batch state\",\n69:           \"disposition\": \"migrate-adapter\",\n70:           \"evidence\": \"Defines Batch and WorkConfig with separate persistence.\"\n71:         },\n72:         {\n73:           \"path\": \"src/rune/message_queue.py\",\n74:           \"role\": \"Chat-to-task amendment queue\",\n75:           \"disposition\": \"migrate-adapter\",\n76:           \"evidence\": \"Used by RuneApp before ordinary model submission.\"\n77:         }\n78:       ]\n79:     },\n80:     {\n81:       \"id\": \"context_construction\",\n82:       \"current_authority\": \"RuneOperator prompt assembly plus parallel TUI preprocessing\",\n83:       \"v1_owner\": \"ContextBroker\",\n84:       \"dependency_issue\": \"#19\",\n85:       \"migration_rule\": \"All selectors return typed candidates to ContextBroker; no caller appends prompt blocks directly.\",\n86:       \"current_paths\": [\n87:         {\n88:           \"path\": \"src/rune/rune_operator.py:424-714\",\n89:           \"role\": \"Actual system prompt and context block assembly\",\n90: Line truncated
+{"type":"step_finish","timestamp":1788953842927,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085f554ce001hx083Xzmz","reason":"tool-calls","snapshot":"02a13192ce513083e13d1be6ed9002edd99f35aa","messageID":"msg_g001a085f262af001rZ0ImFwSv","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","type":"step-finish","tokens":{"total":82065,"input":24822,"output":222,"reasoning":4861,"cache":{"write":0,"read":52160}},"cost":0}}
+{"type":"step_start","timestamp":1788953852522,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085f57a68001JwLjevB2j","messageID":"msg_g001a085f55516001Nd0Ui3SXT","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","snapshot":"e3485ced605474a44f1e874eb0fb56a7819349e5","type":"step-start"}}
+{"type":"text","timestamp":1788954029660,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085f7fe11001QlBEmnZ1p","messageID":"msg_g001a085f55516001Nd0Ui3SXT","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","type":"text","text":"The authority map confirms `ContextBroker.memory_selector` owns memory selection with `memory_store.py` as retain-authority, and `rune_operator`'s direct graph selection is already slated as archive-candidate. Two big attack threads just surfaced: `valid_until` is never written anywhere (bi-temporal claim suspect), and `status='expired'` is unreachable. Now checking the actual write paths, the GraphSource consumer, the rebuildable-projections doctrine, and — as a targeted check — whether FTS5 is even available in this runtime and whether the real graph DB contains any superseded history at all.","time":{"start":1788954017297,"end":1788954029658}}}
+{"type":"tool_use","timestamp":1788954029683,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"type":"tool","tool":"read","callID":"call_4912c57ae0e6469383ef20bd","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/src/rune/memory_consolidation.py","limit":60,"offset":410},"output":"<path>/mnt/workdrive/issue161-harness/src/rune/memory_consolidation.py</path>\n<type>file</type>\n<content>\n410:         # 1. Consolidate warm neurons\n411:         try:\n412:             sys.path.insert(0, _SD)\n413:             import warm_neuron_store\n414:             neurons = warm_neuron_store.list_neurons()\n415:             for neuron in (neurons if neuron_limit is None else neurons[:neuron_limit]):\n416:                 knowledge = self.consolidate_neuron(neuron)\n417:                 existing = [k for k in self.knowledge if k.id == knowledge.id]\n418:                 if not existing:\n419:                     self.knowledge.append(knowledge)\n420:                     counts[\"neurons\"] += 1\n421:                 elif existing and knowledge.entry_id and not existing[0].entry_id:\n422:                     # Update existing entry with entry_id if it was missing\n423:                     existing[0].entry_id = knowledge.entry_id\n424:                     counts[\"neurons\"] += 1\n425:         except Exception as e:\n426:             print(f\"  neuron consolidation error: {e}\", file=sys.stderr)\n427: \n428:         # 2. Consolidate graph memory\n429:         try:\n430:             sys.path.insert(0, _SD)\n431:             import graph_memory\n432:             db = graph_memory.connect()\n433:             try:\n434:                 entities = db.execute(\n435:                     \"SELECT name, type, summary FROM entities WHERE type != 'alias'\"\n436:                 ).fetchall()\n437:                 for row in entities:\n438:                     entity = {\"name\": row[0], \"type\": row[1], \"summary\": row[2] or \"\"}\n439:                     knowledge = self.consolidate_graph_entity(entity)\n440:                     existing = [k for k in self.knowledge if k.id == knowledge.id]\n441:                     if not existing:\n442:                         self.knowledge.append(knowledge)\n443:                         counts[\"graph\"] += 1\n444:                     elif existing and knowledge.entry_id and not existing[0].entry_id:\n445:                         existing[0].entry_id = knowledge.entry_id\n446:                         counts[\"graph\"] += 1\n447:             finally:\n448:                 db.close()\n449:         except Exception as e:\n450:             print(f\"  graph consolidation error: {e}\", file=sys.stderr)\n451: \n452:         # 3. Consolidate abstraction facts\n453:         try:\n454:             sys.path.insert(0, _SD)\n455:             import abstraction\n456:             db = abstraction.connect()\n457:             try:\n458:                 limit_clause = f\" LIMIT {abstraction_limit}\" if abstraction_limit else \"\"\n459:                 facts = db.execute(\n460:                     f\"SELECT what, entities_json FROM facts WHERE state='active'{limit_clause}\"\n461:                 ).fetchall()\n462:                 for fact_text, entities_json in facts:\n463:                     knowledge = self.consolidate_abstraction_fact(fact_text, entities_json=entities_json or \"\")\n464:                     existing = [k for k in self.knowledge if k.id == knowledge.id]\n465:                     if not existing:\n466:                         self.knowledge.append(knowledge)\n467:                         counts[\"abstraction\"] += 1\n468:                     elif existing and knowledge.entry_id and not existing[0].entry_id:\n469:                         existing[0].entry_id = knowledge.entry_id\n\n(Showing lines 410-469 of 724. Use offset=470 to continue.)\n</content>","metadata":{"preview":"        # 1. Consolidate warm neurons\n        try:\n            sys.path.insert(0, _SD)\n            import warm_neuron_store\n            neurons = warm_neuron_store.list_neurons()\n            for neuron in (neurons if neuron_limit is None else neurons[:neuron_limit]):\n                knowledge = self.consolidate_neuron(neuron)\n                existing = [k for k in self.knowledge if k.id == knowledge.id]\n                if not existing:\n                    self.knowledge.append(knowledge)\n                    counts[\"neurons\"] += 1\n                elif existing and knowledge.entry_id and not existing[0].entry_id:\n                    # Update existing entry with entry_id if it was missing\n                    existing[0].entry_id = knowledge.entry_id\n                    counts[\"neurons\"] += 1\n        except Exception as e:\n            print(f\"  neuron consolidation error: {e}\", file=sys.stderr)\n\n        # 2. Consolidate graph memory\n        try:","truncated":true,"loaded":[]},"title":"src/rune/memory_consolidation.py","time":{"start":1788954029659,"end":17889540296Line truncated
+{"type":"tool_use","timestamp":1788954029685,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"type":"tool","tool":"read","callID":"call_096d2f39affa4a63bf469324","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/src/rune/memory_selector.py","limit":70,"offset":340},"output":"<path>/mnt/workdrive/issue161-harness/src/rune/memory_selector.py</path>\n<type>file</type>\n<content>\n340:     for neuron in neurons:\n341:         triggers = neuron.get(\"triggers\") or []\n342:         if not any(t in task_words for t in triggers):\n343:             continue\n344:         text = neuron.get(\"text\", \"\")\n345:         score = _lex_overlap_score(text, query)\n346:         if score < min_score:\n347:             continue\n348:         out.append(\n349:             {\n350:                 \"text\": f\"[{neuron.get('slug', 'warm')}] {text}\",\n351:                 \"score\": score,\n352:                 \"kind\": \"neuron\",\n353:                 \"source\": \"warm_neuron_store.list_neurons\",\n354:             }\n355:         )\n356:         if len(out) >= budget:\n357:             break\n358:     return out\n359: \n360: \n361: def _graphs_recall(query: str, types: list[str] | None, budget: int, min_score: float) -> list[dict]:\n362:     \"\"\"Graph source: entity BFS from the task words via graph_memory.query,\n363:     floored. The pre-P1-03 contributor called resolve_entity(), which MUTATES\n364:     the graph (creates missing entities); read-only query() keeps the store\n365:     side-effect-free. A term with no entity yields no candidates.\"\"\"\n366:     try:\n367:         import graph_memory\n368:     except ImportError:  # TUI top-level deploy\n369:         import rune.graph_memory as graph_memory  # type: ignore[no-redef]\n370: \n371:     db = graph_memory.connect()\n372:     out: list[dict] = []\n373:     try:\n374:         task_words = list(dict.fromkeys(w.lower().strip(\".,;:!?()[]{}\\\"'\") for w in query.split()))[:5]\n375:         for word in task_words:\n376:             result = graph_memory.query(db, word, hops=1)\n377:             if not result:\n378:                 continue\n379:             entity = result.get(\"entity\", word) if isinstance(result, dict) else str(result)\n380:             facts = result.get(\"facts\", []) if isinstance(result, dict) else []\n381:             lines = [f\"{f.get('subject')} {f.get('predicate', '-')} {f.get('object')}\" for f in facts]\n382:             text = \"; \".join(lines) if lines else str(entity)\n383:             score = _lex_overlap_score(text, query) or (1.0 / max(len(task_words), 1))\n384:             if score < min_score:\n385:                 continue\n386:             out.append({\"text\": text, \"score\": score, \"kind\": \"graph\", \"source\": \"graph_memory.query\"})\n387:             if len(out) >= budget:\n388:                 break\n389:     finally:\n390:         db.close()\n391:     return out\n392: \n393: \n394: def _abstraction_recall(query: str, types: list[str] | None, budget: int, min_score: float) -> list[dict]:\n395:     \"\"\"Abstraction-facts source: LIKE scan over active facts, floored.\n396: \n397:     The pre-P1-03 contributor injected the top-3 LIKE matches unconditionally;\n398:     here a LIKE match is only a candidate — it must clear the floor.\n399:     \"\"\"\n400:     try:\n401:         import abstraction\n402:     except ImportError:  # TUI top-level deploy\n403:         import rune.abstraction as abstraction  # type: ignore[no-redef]\n404: \n405:     db = abstraction.connect()\n406:     out: list[dict] = []\n407:     try:\n408:         task_words = [w for w in query.lower().split()[:3] if w]\n409:         if not task_words:\n\n(Showing lines 340-409 of 511. Use offset=410 to continue.)\n</content>","metadata":{"preview":"    for neuron in neurons:\n        triggers = neuron.get(\"triggers\") or []\n        if not any(t in task_words for t in triggers):\n            continue\n        text = neuron.get(\"text\", \"\")\n        score = _lex_overlap_score(text, query)\n        if score < min_score:\n            continue\n        out.append(\n            {\n                \"text\": f\"[{neuron.get('slug', 'warm')}] {text}\",\n                \"score\": score,\n                \"kind\": \"neuron\",\n                \"source\": \"warm_neuron_store.list_neurons\",\n            }\n        )\n        if len(out) >= budget:\n            break\n    return out\n","truncated":true,"loaded":[]},"title":"src/rune/memory_selector.py","time":{"start":1788954029662,"end":1788954029684}},"id":"prt_g001a085f82ded001fTZGLmcK1","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","messageID":"msg_g001a085f55516001Nd0Ui3SXT"}}
+{"type":"tool_use","timestamp":1788954029687,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"type":"tool","tool":"read","callID":"call_6611032b66b744a095ec7723","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/src/rune/curator.py","limit":60,"offset":1355},"output":"<path>/mnt/workdrive/issue161-harness/src/rune/curator.py</path>\n<type>file</type>\n<content>\n1355:     if strength < 3:\n1356:         return False\n1357:     low = fact.lower()\n1358:     subj = None\n1359:     pred = None\n1360:     obj = None\n1361:     for verb, canonical in GRAPH_VERB_MAP.items():\n1362:         idx = low.find(verb)\n1363:         if idx > 0:\n1364:             subj = fact[:idx].strip().lstrip(\"-* \").strip()\n1365:             obj = fact[idx + len(verb):].strip()\n1366:             obj = re.split(r\"[.,;]\", obj)[0].strip()\n1367:             # Trim trailing prepositional phrases: \"teaches guitar at the\n1368:             # studio\" -> object is the direct noun, not the whole clause.\n1369:             obj = re.split(r\"\\s+(at|in|on|for|to|from|with|and|through|via) \",\n1370:                            obj)[0].strip()\n1371:             pred = canonical\n1372:             break\n1373:     if not subj or not obj or not pred:\n1374:         return False\n1375:     # Subject must be a proper noun-ish or the user keyword to avoid junk triples.\n1376:     if subj.lower() not in (\"user\", \"i\", \"we\") and len(subj) < 3:\n1377:         return False\n1378:     try:\n1379:         r = subprocess.run(\n1380:             [\"python3\", os.path.join(os.path.dirname(os.path.abspath(__file__)),\n1381:                                      \"graph_memory.py\"),\n1382:              \"add\", subj, pred, obj, \"--evidence\", evidence[:200],\n1383:              \"--source\", source, \"--strength\", str(strength)],\n1384:             capture_output=True, text=True, timeout=15)\n1385:         return '\"added\": True' in (r.stdout or \"\")\n1386:     except Exception:\n1387:         logger.debug(\"graph_write failed\", exc_info=True)\n1388:         return False\n1389: \n1390: \n1391: def apply_warm(op, journal_lines):\n1392:     \"\"\"Warm-tier write: promote a fact into the neuron layer (NEW SCHEMA).\n1393: \n1394:     Finds an existing neuron whose triggers match the fact and upserts the fact\n1395:     into it; if none, seeds a new neuron via write_neuron. No size-based\n1396:     division — neurons are atomic store entries, and firing is optimized by the\n1397:     token budget at injection time, never by splitting stored content.\n1398:     \"\"\"\n1399:     from warm_router import list_neurons, write_neuron, _derive_triggers\n1400:     fact = (op.get(\"after\") or \"\").strip()\n1401:     if not fact:\n1402:         return False\n1403:     low = fact.lower()\n1404:     best = None\n1405:     best_hits = 0\n1406:     for n in list_neurons():\n1407:         hits = sum(1 for t in n[\"triggers\"] if t and t in low)\n1408:         if hits > best_hits:\n1409:             best, best_hits = n, hits\n1410:     if best is not None and best_hits > 0:\n1411:         # Upsert the fact into the matching neuron (auto-build, no splitting).\n1412:         new_body = (best[\"body\"] + f\"\\n- {fact}\\n\")\n1413:         write_neuron(best[\"slug\"], best[\"triggers\"], new_body,\n1414:                      importance=best[\"importance\"])\n\n(Showing lines 1355-1414 of 1612. Use offset=1415 to continue.)\n</content>","metadata":{"preview":"    if strength < 3:\n        return False\n    low = fact.lower()\n    subj = None\n    pred = None\n    obj = None\n    for verb, canonical in GRAPH_VERB_MAP.items():\n        idx = low.find(verb)\n        if idx > 0:\n            subj = fact[:idx].strip().lstrip(\"-* \").strip()\n            obj = fact[idx + len(verb):].strip()\n            obj = re.split(r\"[.,;]\", obj)[0].strip()\n            # Trim trailing prepositional phrases: \"teaches guitar at the\n            # studio\" -> object is the direct noun, not the whole clause.\n            obj = re.split(r\"\\s+(at|in|on|for|to|from|with|and|through|via) \",\n                           obj)[0].strip()\n            pred = canonical\n            break\n    if not subj or not obj or not pred:\n        return False","truncated":true,"loaded":[]},"title":"src/rune/curator.py","time":{"start":1788954029661,"end":1788954029687}},"id":"prt_g001a085f813c6001Lr2L1Zdwl","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","messageID":"msg_g001a085f55516001Nd0Ui3SXT"}}
+{"type":"tool_use","timestamp":1788954029700,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"type":"tool","tool":"grep","callID":"call_21ab61366ef14203bcaccf23","state":{"status":"completed","input":{"include":"*.md","path":"/mnt/workdrive/issue161-harness","pattern":"projection|rebuild"},"output":"Found 93 matches\n/mnt/workdrive/issue161-harness/docs/RESEARCH_CODE_CLASSIFICATION.md:\n  Line 58:   projection, runner placement, refinement routing)\n\n\n/mnt/workdrive/issue161-harness/research/issue-262/.firecrawl/s-aviim.md:\n  Line 53: 2. Unclean shutdown during WAL write. The WAL index is updated after a successful write. Maybe after the WAL write, the process crashed, and the index wasn’t updated. On the next start, SQLite rebuilds the index.\n\n\n/mnt/workdrive/issue161-harness/research/issue-245-research.md:\n  Line 75: 3. **Unbounded chat-log widget growth**: `ChannelView.add_message` (rune_tui.py:1198-1210) mounts a `MessageBox` (src/rune/chat_bubble.py:279, a `Horizontal` wrapping `ChatBubble(Static)`) into `VerticalScroll` per message and calls `scroll_end` — no cap. Contrast: `WorkPane` is bounded at `_WORK_PANE_MAX_ENTRIES = 120` with oldest-entry eviction in `add_object` (rune_tui.py:1215, 1309-1325), and RichLog (used for command results, rune_tui.py:552) supports upstream `max_lines`. A long session accumulates thousands of mounted widgets; Textual's own history shows large scrollable containers were a real perf hazard (S2 #6317). The `self.messages` projection list (rune_tui.py:1208-1210) is the durable display record; durable state lives in ConversationStateRepository, so only DOM widgets are safe to bound.\n\n  Line 129:   proposal: add `_CHAT_LOG_MAX_WIDGETS = 200` beside `_WORK_PANE_MAX_ENTRIES` (rune_tui.py:1215). In `ChannelView.add_message` (rune_tui.py:1198-1210), after `log.mount(bubble)`, prune the oldest mounted `MessageBox` children beyond the cap: batch-remove `log.children[:overflow]` via `remove_children` (layout-refreshing since 6.6.0, S2 #6206), preserving `scroll_end(animate=False)`. Never touch `self.messages` — the projection list and ConversationStateRepository remain the durable record; only DOM widgets are bounded. Do NOT rewrite the log on RichLog/Line-API virtual rendering (RichLog's `max_lines` idiom — https://textual.textualize.io/widgets/rich_log/ — proves bounded retention is upstream-sanctioned, but its lines are not interactive widgets): bubbles must stay interactive (ThinkingBubble toggle chat_bubble.py:261-276; ToolCallWidget decision buttons message_widgets.py:14-41). Scroll-jump caveat: pruning while the user has scrolled up will move the view; acceptable at cap events (2-per-100-messages), and `Widget.anchor` (S2 #5950) is the upstream primitive if follow-up polish is ever needed.\n\n  Line 163:    f. test_chat_log_bounded: under `run_test()`, push 220 messages via `chat_channel.add_message(...)`; assert `len(log.children) <= 200` while `len(chat_channel.messages) == 220` (projection survives pruning). RED.\n\n\n/mnt/workdrive/issue161-harness/plans/2026-09-06-p1-01-capability-authority.md:\n  Line 7: **Architecture:** `capability_broker.py` becomes the single selection authority (per `config/v1_authority_map.json` `capability_selection` → v1_owner `ContextBroker.capability_selector`): `select_for_job(task_description, need_tools)` returns an ordered tool-name selection with reason; the operator feeds that selection into `LocalToolRuntime(tools=...)` (both construction sites) and replaces the names-only `_contributor_tools` prompt block with the selected set; a always-exposed tiny `find_capability` native tool is the escape hatch; unknown-tool requests route to a helpful error listing `find_capability`. Cards gain `preconditions`, `side_effects`, per-tool `risk` and rebuild on empty/stale. Composition registers the broker as the single selection authority.\n\n  Line 26: 4. **Card validation:** `load_cards` rebuilds when file missing OR empty OR stale (mtime older than `.microkernel.json` registry). Cards for native tools are synthesized from TOOLS metadata so selection has full coverage even with no plugins.\n\n  Line 34: **Files:** modify `src/rune/tool_executor.py` (metadata on TOOLS), `src/rune/capability_broker.py` (synthesis, rebuild-on-empty/stale), test `tests/test_p1_01_capability_authority.py`.\n\n  Line 36: - [ ] Step 1: failing tests — every TOOLS entry carries risk/preconditions/side_effects; `load_cards` synthesizes native cards when cards file empty; rebuild triggers on empty file and on stale mtime vs registry.\n\n  Line 92: 7. **Resume mechanism.** Global constraint \"resume round-trips must use the same selected set\" is implemented by persisting an additive `exposed_tools` key into `pending_state` (selected set + any in-run discovered tools); `_runtime_for_model` rebuilds exactly that set, with deterministic re-selection from the task description as fallback for pre-#24 pending states.\n\n  Line 94: 9. **Cards file rewLine truncated
+{"type":"tool_use","timestamp":1788954029737,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"type":"tool","tool":"bash","callID":"call_f15c70980f5a4f7bbb658223","state":{"status":"completed","input":{"command":"python3 - <<'EOF'\nimport sqlite3, os, json\n# 1) FTS5 availability in this runtime\ntry:\n    c = sqlite3.connect(':memory:')\n    c.execute(\"CREATE VIRTUAL TABLE t USING fts5(x)\")\n    ver = sqlite3.sqlite_version\n    print(\"FTS5_AVAILABLE yes, sqlite\", ver)\nexcept Exception as e:\n    print(\"FTS5_AVAILABLE no:\", e)\n\n# 2) real graph DB inspection (read-only)\nfor p in [\"/mnt/workdrive/rune/memory/graph/graph.sqlite\",\n          os.path.expanduser(\"~/.config/opencode/memory/graph.db\")]:\n    if not os.path.exists(p):\n        print(\"DB missing:\", p); continue\n    print(\"DB:\", p)\n    db = sqlite3.connect(f\"file:{p}?mode=ro\", uri=True)\n    db.row_factory = sqlite3.Row\n    for q in [\"SELECT COUNT(*) n FROM entities\",\n              \"SELECT COUNT(*) n FROM aliases\",\n              \"SELECT COUNT(*) n FROM edges\",\n              \"SELECT status, COUNT(*) n FROM edges GROUP BY status\",\n              \"SELECT COUNT(*) n FROM edges WHERE valid_until IS NOT NULL\",\n              \"SELECT COUNT(*) n FROM edges WHERE valid_from <> learned_at\",\n              \"SELECT COUNT(*) n FROM edges WHERE superseded_by IS NOT NULL\"]:\n        try:\n            r = db.execute(q).fetchone()\n            print(\"  \", q, \"->\", r[\"n\"] if \"n\" in r.keys() else dict(r))\n        except Exception as e:\n            print(\"  \", q, \"ERROR\", e)\n    db.close()\nEOF","description":"Check FTS5 availability and inspect real graph DB read-only"},"output":"FTS5_AVAILABLE yes, sqlite 3.53.4\nDB: /mnt/workdrive/rune/memory/graph/graph.sqlite\n   SELECT COUNT(*) n FROM entities -> 0\n   SELECT COUNT(*) n FROM aliases -> 0\n   SELECT COUNT(*) n FROM edges -> 0\n   SELECT status, COUNT(*) n FROM edges GROUP BY status ERROR 'NoneType' object has no attribute 'keys'\n   SELECT COUNT(*) n FROM edges WHERE valid_until IS NOT NULL -> 0\n   SELECT COUNT(*) n FROM edges WHERE valid_from <> learned_at -> 0\n   SELECT COUNT(*) n FROM edges WHERE superseded_by IS NOT NULL -> 0\nDB missing: /home/nick/.config/opencode/memory/graph.db\n","metadata":{"output":"FTS5_AVAILABLE yes, sqlite 3.53.4\nDB: /mnt/workdrive/rune/memory/graph/graph.sqlite\n   SELECT COUNT(*) n FROM entities -> 0\n   SELECT COUNT(*) n FROM aliases -> 0\n   SELECT COUNT(*) n FROM edges -> 0\n   SELECT status, COUNT(*) n FROM edges GROUP BY status ERROR 'NoneType' object has no attribute 'keys'\n   SELECT COUNT(*) n FROM edges WHERE valid_until IS NOT NULL -> 0\n   SELECT COUNT(*) n FROM edges WHERE valid_from <> learned_at -> 0\n   SELECT COUNT(*) n FROM edges WHERE superseded_by IS NOT NULL -> 0\nDB missing: /home/nick/.config/opencode/memory/graph.db\n","exit":0,"description":"Check FTS5 availability and inspect real graph DB read-only","truncated":false},"title":"Check FTS5 availability and inspect real graph DB read-only","time":{"start":1788954029731,"end":1788954029735}},"id":"prt_g001a085f82def003V7jrYqHC0","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","messageID":"msg_g001a085f55516001Nd0Ui3SXT"}}
+{"type":"step_finish","timestamp":1788954029775,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085f82ea9001LgopoQYc3","reason":"tool-calls","snapshot":"b34de943c50b3aa0b652b8e838abc5d19b1ec766","messageID":"msg_g001a085f55516001Nd0Ui3SXT","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","type":"step-finish","tokens":{"total":92791,"input":86968,"output":634,"reasoning":5189,"cache":{"write":0,"read":0}},"cost":0}}
+{"type":"step_start","timestamp":1788954129771,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085f9b56a0013bvgM8LXs","messageID":"msg_g001a085f82f0c001SkMzNPePU","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","snapshot":"460fc91a84efbf5d87b1c516a57ae89c983091bd","type":"step-start"}}
+{"type":"text","timestamp":1788954133134,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085f9c228002Zvj0rlhrn","messageID":"msg_g001a085f82f0c001SkMzNPePU","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","type":"text","text":"The real production graph DB is **empty** (0 entities, 0 edges) — that's a decisive falsification datum. Two more checks to pin down the C6 benefit-chain attack (FTS5 already exists in memory_store; the selector-level score floor) and the canary/contract constraints on `connect()`:","time":{"start":1788954133032,"end":1788954133126}}}
+{"type":"tool_use","timestamp":1788954133185,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"type":"tool","tool":"grep","callID":"call_a52d6b8f3fea40698b935d5e","state":{"status":"completed","input":{"path":"/mnt/workdrive/issue161-harness/src/rune/memory_store.py","pattern":"fts5|bm25|sqlite-vec|vec0"},"output":"Found 36 matches\n/mnt/workdrive/issue161-harness/src/rune/memory_store.py:\n  Line 5: file running sqlite-vec (dense vectors) + FTS5 (BM25) side by side.\n\n  Line 10:   - HYBRID RETRIEVAL: dense (vec0) + BM25 (FTS5) fused by RRF (rank-based,\n\n  Line 26: Run under ~/.venvs/memory/bin/python3 (has sqlite-vec).\n\n  Line 126:         CREATE VIRTUAL TABLE IF NOT EXISTS entries_vec USING vec0(\n\n  Line 129:         CREATE VIRTUAL TABLE IF NOT EXISTS entries_fts USING fts5(\n\n  Line 146:         CREATE VIRTUAL TABLE IF NOT EXISTS chunks_vec USING vec0(\n\n  Line 149:         CREATE VIRTUAL TABLE IF NOT EXISTS chunks_fts USING fts5(\n\n  Line 422:     Uses vec0 KNN to find top-N nearest neighbors (O(1) query instead of O(n) scan),\n\n  Line 431:         # Use vec0 KNN to find top candidates instead of scanning all rows\n\n  Line 443:             # Fallback: if vec0 query fails, skip associations\n\n  Line 450:             cos = 1.0 - r[\"distance\"]  # vec0 distance is 1 - cosine\n\n  Line 634:     # (1) Dense: exact KNN over vec0 (fine at a few thousand entries).\n\n  Line 683:     bm25 = []\n\n  Line 686:             \"SELECT rowid, bm25(entries_fts) AS score FROM entries_fts \"\n\n  Line 688:             \"ORDER BY bm25(entries_fts) LIMIT ?\",\n\n  Line 693:         bm25 = [(r[\"rowid\"], float(r[\"score\"])) for r in rows]\n\n  Line 699:         if not bm25 and _extra:\n\n  Line 707:                         \"SELECT rowid, bm25(entries_fts) AS score FROM entries_fts \"\n\n  Line 709:                         \"ORDER BY bm25(entries_fts) LIMIT 4\",\n\n  Line 720:                     f\"SELECT rowid, bm25(entries_fts) AS score FROM entries_fts WHERE rowid IN ({_ph})\", _ids\n\n  Line 722:                 bm25 = [(r[\"rowid\"], float(r[\"score\"])) for r in _rows]\n\n  Line 735:     if dense and bm25:\n\n  Line 737:         for idx, lst in enumerate([dense, bm25]):\n\n  Line 747:     elif bm25:\n\n  Line 753:         _min_bm = min((s for _, s in bm25), default=0.0)\n\n  Line 754:         _max_bm = max((s for _, s in bm25), default=0.0)\n\n  Line 756:         for eid, score in bm25:\n\n  Line 801:             if dense and bm25:\n\n  Line 839:     if not dense and not bm25:\n\n  Line 867:     if not bm25:\n\n  Line 1381:             db.execute(\"CREATE VIRTUAL TABLE entries_fts USING fts5(text, content='', tokenize='porter unicode61')\")\n\n  Line 1522:     # sqlite-vec rowid = sqlite rowid of the chunks table row.\n\n  Line 1563:     bm25 = []\n\n  Line 1566:             \"SELECT rowid FROM chunks_fts WHERE chunks_fts MATCH ? ORDER BY bm25(chunks_fts) LIMIT ?\",\n\n  Line 1569:         bm25 = [(r[\"rowid\"], 0.5) for r in rows]\n\n  Line 1573:     for lst in [dense, bm25]:\n","metadata":{"matches":36,"truncated":false},"title":"fts5|bm25|sqlite-vec|vec0","time":{"start":1788954133128,"end":1788954133184}},"id":"prt_g001a085f9c238001Inq2N9c3w","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","messageID":"msg_g001a085f82f0c001SkMzNPePU"}}
+{"type":"tool_use","timestamp":1788954133187,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"type":"tool","tool":"grep","callID":"call_83974c445ee24627b231ed7a","state":{"status":"completed","input":{"path":"/mnt/workdrive/issue161-harness/src/rune/memory_selector.py","pattern":"_lex_overlap_score|RECALL_MIN_SCORE|min_score"},"output":"Found 31 matches\n/mnt/workdrive/issue161-harness/src/rune/memory_selector.py:\n  Line 12:   - ONE relevance floor — ``memory_store.RECALL_MIN_SCORE`` (0.42) default —\n\n  Line 14:     calibrated gate (``min_score`` is passed down into ``recall``, which\n\n  Line 88:     Sources are registered callables ``(query, types, budget, min_score) ->\n\n  Line 105:     def __init__(self, db_path: str | None = None, min_score: float | None = None):\n\n  Line 107:         self.min_score = float(min_score) if min_score is not None else float(memory_store.RECALL_MIN_SCORE)\n\n  Line 160:                 found = fn(query, types_queried, MAX_CANDIDATES, self.min_score)\n\n  Line 171:         # the same constant inside recall() — which applies min_score in\n\n  Line 175:         # against the same selector min_score.\n\n  Line 176:         selected = [item for item in candidates if item.get(\"store_scored\") or _score_of(item) >= self.min_score]\n\n  Line 202:                 self.min_score,\n\n  Line 209:     def _source_store(self, query: str, types: list[str], budget: int, min_score: float) -> list[dict]:\n\n  Line 211:         return _store_recall(query, types, budget, min_score, db_path=self.db_path)\n\n  Line 227:     min_score: float = memory_store.RECALL_MIN_SCORE,\n\n  Line 240:     ``min_score`` in EVERY recall mode (lexical-only, dense-only, hybrid —\n\n  Line 271:         results = memory_store.recall(db, query, budget=budget, min_score=min_score, memory_types=types or None)\n\n  Line 277:                 db, query, budget=budget, min_score=min_score, memory_types=persona_types\n\n  Line 305: def _lex_overlap_score(text: str, query: str) -> float:\n\n  Line 323: def _neurons_recall(query: str, types: list[str] | None, budget: int, min_score: float) -> list[dict]:\n\n  Line 345:         score = _lex_overlap_score(text, query)\n\n  Line 346:         if score < min_score:\n\n  Line 361: def _graphs_recall(query: str, types: list[str] | None, budget: int, min_score: float) -> list[dict]:\n\n  Line 383:             score = _lex_overlap_score(text, query) or (1.0 / max(len(task_words), 1))\n\n  Line 384:             if score < min_score:\n\n  Line 394: def _abstraction_recall(query: str, types: list[str] | None, budget: int, min_score: float) -> list[dict]:\n\n  Line 419:             score = _lex_overlap_score(text, query)\n\n  Line 420:             if score < min_score:\n\n  Line 430: def _consolidated_recall(query: str, types: list[str] | None, budget: int, min_score: float) -> list[dict]:\n\n  Line 454:         score = _lex_overlap_score(content, query)\n\n  Line 455:         if score < min_score:\n\n  Line 467:     min_score: float,\n\n  Line 486:         rows = memory_store.recall(db, query, budget=budget, min_score=min_score, memory_types=sorted(wanted))\n","metadata":{"matches":31,"truncated":false},"title":"_lex_overlap_score|RECALL_MIN_SCORE|min_score","time":{"start":1788954133135,"end":1788954133186}},"id":"prt_g001a085f9c23a0013YyAy5xfw","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","messageID":"msg_g001a085f82f0c001SkMzNPePU"}}
+{"type":"tool_use","timestamp":1788954133201,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"type":"tool","tool":"read","callID":"call_2fb6b0a99dcb43e7bef8791e","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/src/rune/canary_p0_04.py","limit":40,"offset":90},"output":"<path>/mnt/workdrive/issue161-harness/src/rune/canary_p0_04.py</path>\n<type>file</type>\n<content>\n90:         \"warm_router.route\",\n91:         \"capability_broker.match\",\n92:         \"memory_store.connect\",\n93:         \"witness.detect_signals\",\n94:         \"drift_ledger.check\",\n95:         \"sleep_time.consolidate\",\n96:         \"run_parallel\",\n97:         \"prompt_sync\",\n98:         \"abstraction.connect\",\n99:         \"graph_memory.resolve\",\n100:         \"time_awareness.get_time_context\",\n101:         \"event_bus.emit\",\n102:     )\n103:     for banned in banned_ids:\n104:         if banned in body:\n105:             return _fail(f\"pipeline step {banned} re-added inside _run_warm_router\")\n106:     return 0\n107: \n108: \n109: def check_subsystems_import() -> int:\n110:     modules = (\n111:         \"warm_router\",\n112:         \"capability_broker\",\n113:         \"memory_store\",\n114:         \"witness\",\n115:         \"cache\",\n116:         \"prompt_sync\",\n117:         \"abstraction\",\n118:         \"graph_memory\",\n119:         \"context_pressure\",\n120:         \"event_bus\",\n121:         \"task_persist\",\n122:         \"time_awareness\",\n123:         \"warm_neuron_store\",\n124:         \"hook_engine\",\n125:         \"voice_hybrid\",\n126:         \"sleep_time\",\n127:         \"drift_ledger\",\n128:         \"auto_context\",\n129:         \"auto_tasks\",\n\n(Showing lines 90-129 of 207. Use offset=130 to continue.)\n</content>","metadata":{"preview":"        \"warm_router.route\",\n        \"capability_broker.match\",\n        \"memory_store.connect\",\n        \"witness.detect_signals\",\n        \"drift_ledger.check\",\n        \"sleep_time.consolidate\",\n        \"run_parallel\",\n        \"prompt_sync\",\n        \"abstraction.connect\",\n        \"graph_memory.resolve\",\n        \"time_awareness.get_time_context\",\n        \"event_bus.emit\",\n    )\n    for banned in banned_ids:\n        if banned in body:\n            return _fail(f\"pipeline step {banned} re-added inside _run_warm_router\")\n    return 0\n\n\ndef check_subsystems_import() -> int:","truncated":true,"loaded":[]},"title":"src/rune/canary_p0_04.py","time":{"start":1788954133157,"end":1788954133199}},"id":"prt_g001a085f9c282001yv7Z3JCMz","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","messageID":"msg_g001a085f82f0c001SkMzNPePU"}}
+{"type":"step_finish","timestamp":1788954133317,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085f9c2d1001KojlQl71b","reason":"tool-calls","snapshot":"e228f2fe49b636c58a8a9a7d80917dd4512b0ddf","messageID":"msg_g001a085f82f0c001SkMzNPePU","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","type":"step-finish","tokens":{"total":97705,"input":94791,"output":2914,"reasoning":0,"cache":{"write":0,"read":0}},"cost":0}}
+{"type":"step_start","timestamp":1788954312183,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085fc7df5001L7Dji7f0h","messageID":"msg_g001a085f9c38000152JfQhd2T","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","snapshot":"95a97ac108c9bbc2b02dc206e826b626dc8d7f1f","type":"step-start"}}
+{"type":"text","timestamp":1788954416305,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085fc9d65001EIH9tBms8","messageID":"msg_g001a085f9c38000152JfQhd2T","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","type":"text","text":"All evidence is in hand — no external fetches were needed; the code, the authority map, and the **live production DB itself** (empty!) give decisive findings. The strongest one: INN-1's as-of filter, as specified, would return stale superseded facts alongside their replacements, because supersede never writes `valid_until`. Writing the adversarial dossier now.","time":{"start":1788954320229,"end":1788954416294}}}
+{"type":"tool_use","timestamp":1788954416311,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"type":"tool","tool":"write","callID":"call_9a0c7c4d4b4a48cbbcf9b7ad","state":{"status":"completed","input":{"content":"{\n  \"stage\": \"ADVERSARIAL\",\n  \"issue\": 163,\n  \"round\": 1,\n  \"process_id\": \"research-163-r1\",\n  \"attacked\": [\"C4\", \"C5\", \"C6\", \"C9\", \"INN-1\"],\n  \"surviving_candidates\": [\n    {\n      \"id\": \"C4\",\n      \"disposition\": \"SURVIVES_WITH_DOWNGRADE\",\n      \"note\": \"The claim 'implements E14's model 1:1' is contradicted by the code (attacks A1, A11): the tier is a transaction-time append log with same-triple supersession, NOT a bi-temporal model with automatic contradiction invalidation. The candidate survives as 'partially integrated'; downstream dossiers must not repeat the 1:1 characterization.\"\n    },\n    {\n      \"id\": \"C5\",\n      \"disposition\": \"SURVIVES_ONLY_IN_CORRECTED_FORM\",\n      \"note\": \"AS-OF time-travel over preserved history is a real, low-cost capability — but the INN-1 filter formulation is falsified (attack A2). Survives only via mitigation M1: either write valid_until on supersede (one line) or implement transaction-time as-of (learned_at + superseded_by chain) and drop the valid-time half until a writer populates valid windows.\"\n    },\n    {\n      \"id\": \"C6\",\n      \"disposition\": \"SURVIVES_CONDITIONAL\",\n      \"note\": \"Mechanism is sound and FTS5 is available (verified: sqlite 3.53.4 in this runtime). But the benefit chain is broken twice today: the production graph is EMPTY (attack A5) and graph recall is re-floored by memory_selector (attack A6). Survives only with the projection-rule framing (M3), selector-floor test (M4), and write-side sequencing (M5).\"\n    },\n    {\n      \"id\": \"C9\",\n      \"disposition\": \"SURVIVES_TRACK_ONLY\",\n      \"note\": \"Uncontested as a future lead; attacks A9/A10 only constrain its future form: DuckDB/Arrow analytics must be a rebuildable read-only projection of graph.sqlite, never a second store, and must never acquire independent write authority.\"\n    }\n  ],\n  \"rejected_candidates\": [\n    {\n      \"id\": \"INN-1#temporal-filter-as-specified\",\n      \"reason\": \"REJECTED as literally specified — do NOT carry to SYNTHESIS. The filter 'valid_from <= t AND (valid_until IS NULL OR t < valid_until) AND learned_at <= t' applied to the current writer's data returns STALE SUPERSEDED FACTS as if believed: supersede (graph_memory.py:207-208) sets status/superseded_by but never valid_until, so superseded edges remain NULL-open on the valid axis and pass all three predicates for every t after their creation. An as-of query would return the superseded AND superseding edges of a contradiction simultaneously — presenting both sides of a contradiction as current knowledge, the exact failure the feature exists to prevent. C5 itself survives after rework (see surviving_candidates); this exact formulation does not. This is E29's documented NULL-as-open-ended pitfall realized in the proposal spec, not merely in hand-written Cypher.\"\n    }\n  ],\n  \"attacks\": [\n    {\n      \"id\": \"A1\",\n      \"target_candidate\": \"C4\",\n      \"dimension\": \"contradicting_evidence + weak_assumptions\",\n      \"finding\": \"The 'bi-temporal' claim is schema-only. valid_until is NEVER written anywhere in the repo (grep over src/rune: appears only in DDL line 107, INSERT writing NULL at line 201, and SELECTs); status='expired' has no writer; and valid_from and learned_at are both set to the SAME now_iso() call in the single INSERT (lines 200-204). The live production DB confirms: 0 edges where valid_until IS NOT NULL, 0 where valid_from <> learned_at. The tier is a transaction-time-only append log with supersession — the valid-time axis of E14's model is declared but dead.\",\n      \"evidence\": \"graph_memory.py:107,200-204,207-208 (valid_until written NULL; valid_from=learned_at=ts); grep valid_until/superseded across src/rune (no writer); live DB receipt: read-only sqlite3 query against /mnt/workdrive/rune/memory/graph/graph.sqlite returned entities=0, aliases=0, edges=0, valid_until non-null=0, valid_from<>learned_at=0, superseded_by non-null=0\",\n      \"severity\": \"high\"\n    },\n    {\n      \"id\": \"A2\",\n      \"target_candidate\": \"C5 (via INN-1)\",\n      \"dimension\": \"failure_modes\",\n      \"finding\": \"As-of filter as specified returns stale superseded facts (see rejected_candidates for full mechanism). Concretely: seed 'Alice works_at Acme' at t1, contradict at t2>t1; query --as-of t3>t2. Both edges have valid_from=t<=t3, valid_until=NULL, learned_at<=t3 — both are returned. The time-travel capability would be wrong on its very first contradiction.\",\n      \"evidence\": \"graph_memory.py:200-204 (INSERT), :207-208 (supersede touches only status/superseded_by); INN-1 proposal filter quoted in innovation.json:13\",\n      \"severity\": \"Line truncated
+{"type":"step_finish","timestamp":1788954416340,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085fe14b6001DQQ2KZNdX","reason":"tool-calls","snapshot":"21b077663966eb00b36a5ce2cd2309aa69b95237","messageID":"msg_g001a085f9c38000152JfQhd2T","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","type":"step-finish","tokens":{"total":108355,"input":2082,"output":11425,"reasoning":0,"cache":{"write":0,"read":94848}},"cost":0}}
+{"type":"step_start","timestamp":1788954444891,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085fe84590013hH0euveQ","messageID":"msg_g001a085fe153e001IH997j2eG","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","snapshot":"0d6185b43632d1912d8553a6e3f729453b4eaf7f","type":"step-start"}}
+{"type":"text","timestamp":1788954446629,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085fe84b4001MeJWhmbBv","messageID":"msg_g001a085fe153e001IH997j2eG","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","type":"text","text":"Verifying the artifact is valid JSON:","time":{"start":1788954444980,"end":1788954446627}}}
+{"type":"tool_use","timestamp":1788954446653,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"type":"tool","tool":"bash","callID":"call_b70b6d4f316641b69dc60d2f","state":{"status":"completed","input":{"command":"python3 -c \"import json; d=json.load(open('research/issue-163/adversarial.json')); print('valid JSON;', len(d['attacks']), 'attacks,', len(d['surviving_candidates']), 'surviving,', len(d['rejected_candidates']), 'rejected,', len(d['falsification_tests']), 'tests')\"","description":"Validate adversarial.json parses","workdir":"/mnt/workdrive/issue161-harness"},"output":"valid JSON; 13 attacks, 4 surviving, 1 rejected, 6 tests\n","metadata":{"output":"valid JSON; 13 attacks, 4 surviving, 1 rejected, 6 tests\n","exit":0,"description":"Validate adversarial.json parses","truncated":false},"title":"Validate adversarial.json parses","time":{"start":1788954446649,"end":1788954446651}},"id":"prt_g001a085fe84b6001gZyUR74Kc","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","messageID":"msg_g001a085fe153e001IH997j2eG"}}
+{"type":"step_finish","timestamp":1788954446677,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085fe8b3c001P4vNHHlbI","reason":"tool-calls","snapshot":"3888c918caa95eadf804cae79759b3c2f5fccfbf","messageID":"msg_g001a085fe153e001IH997j2eG","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","type":"step-finish","tokens":{"total":102483,"input":5396,"output":127,"reasoning":0,"cache":{"write":0,"read":96960}},"cost":0}}
+{"type":"step_start","timestamp":1788954467546,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085fedcd8001JgaqWywFl","messageID":"msg_g001a085fe8b97001CJPHbfU67","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","snapshot":"2fe30029ca4c04047e5eb0933b2327371f3a6f5e","type":"step-start"}}
+{"type":"text","timestamp":1788954480331,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085fedcd9001e0V71tVs1","messageID":"msg_g001a085fe8b97001CJPHbfU67","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","type":"text","text":"Adversarial dossier written to `research/issue-163/adversarial.json` (13 attacks, 4 survivors, 1 rejection, 6 falsification tests). Valid JSON, no code modified, no stage advanced.\n\n**Headline findings:**\n\n- **Critical (A2) — INN-1's as-of filter is falsified as specified.** Supersede at `graph_memory.py:207-208` sets `status`/`superseded_by` but **never writes `valid_until`** — superseded edges stay NULL-open on the valid axis. The proposed filter (`valid_from <= t AND (valid_until IS NULL OR t < valid_until) AND learned_at <= t`) therefore returns **both sides of every contradiction** as current knowledge. A time-travel query would be wrong on its first contradiction. C5 survives only in corrected form (M1: one-line valid_until-on-supersede fix, or transaction-time-only as-of via `learned_at` + `superseded_by` chain).\n\n- **High (A5) — the production graph is empty.** Read-only inspection of `/mnt/workdrive/rune/memory/graph/graph.sqlite`: 0 entities, 0 aliases, 0 edges. C6's \"capped recall\" benefit is vacuous today; the real bottleneck is write-side adoption (curator's strength<3 gate + fixed verb map at `curator.py:1355-1388`).\n\n- **High (A1/A11) — the \"bi-temporal, implements E14 1:1\" claim is schema-only.** `valid_until` has no writer anywhere in the repo; `status='expired'` is unreachable; `valid_from == learned_at` on every insert. And \"supersede-on-contradiction\" keys on identical triples only — differently-normalized restatements produce parallel active edges with no invalidation. C4 survives **with a downgrade**: downstream dossiers must call it a transaction-time append log with same-triple supersession.\n\n- **High (A6) — duplicate authority for C6.** `memory_store.py` already runs FTS5 BM25 hybrid retrieval (retain-authority, `RECALL_MIN_SCORE=0.42`), and `memory_selector._graphs_recall` re-floors every graph candidate — a typo the new FTS5 tier resolves can still be killed at the selector. INN-1 never mentions the selector. C6 survives conditionally, reframed as a rebuildable projection with an end-to-end selector-level kill test (T3).\n\n- **C9** survives track-only, constrained: any future DuckDB/Arrow sidecar must be a rebuildable read-only projection of `graph.sqlite`, never a second store.\n\nSequencing correction (A13): write-side population first, the valid_until fix second, read-layer work last — INN-1 proposed the read layer first on an empty store. Falsification tests T1–T6 are executable directly from the dossier.","time":{"start":1788954467545,"end":1788954480329}}}
+{"type":"step_finish","timestamp":1788954480359,"sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","part":{"id":"prt_g001a085ff0ecb001l2lmOAgpn","reason":"stop","snapshot":"90d23a19e19fe5462d4d9d3f62f78721df7aaaf8","messageID":"msg_g001a085fe8b97001CJPHbfU67","sessionID":"ses_-ffe5f7a12c34effeSzvjfsvWr","type":"step-finish","tokens":{"total":103119,"input":90,"output":629,"reasoning":0,"cache":{"write":0,"read":102400}},"cost":0}}
@@ -0,0 +1,27 @@
+{"type":"step_start","timestamp":1788951407567,"sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","part":{"id":"prt_g001a085d02bcd001TH7s5ESJ5","messageID":"msg_g001a085d00191001C15RR4qji","sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","snapshot":"23f45f561ddcbbf6f5123dccdd874c04d0d387ba","type":"step-start"}}
+{"type":"text","timestamp":1788951409819,"sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","part":{"id":"prt_g001a085d02c67001ZWkgahH0g","messageID":"msg_g001a085d00191001C15RR4qji","sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","type":"text","text":"I'll first check for a matching skill, then locate the research dossier and Rune's architecture docs for issue #163.","time":{"start":1788951407719,"end":1788951409811}}}
+{"type":"tool_use","timestamp":1788951409822,"sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","part":{"type":"tool","tool":"skill_search","callID":"call_353413a591db4f39a64ccd98","state":{"status":"completed","input":{"query":"Classify researched mechanisms against an existing codebase architecture and write a structured applicability JSON dossier with a route decision (research triage, no code changes)"},"output":"{\n  \"status\": \"matched\",\n  \"results\": [\n    {\n      \"skill_id\": \"firecrawl-agent\",\n      \"name\": \"firecrawl-agent\",\n      \"score\": 0.5868,\n      \"reason\": \"The skill description matches these query terms: structured, json.\"\n    },\n    {\n      \"skill_id\": \"super-research\",\n      \"name\": \"super-research\",\n      \"score\": 0.5981,\n      \"reason\": \"The skill description matches these query terms: against, write, research, no, code.\"\n    },\n    {\n      \"skill_id\": \"design-blueprint\",\n      \"name\": \"design-blueprint\",\n      \"score\": 0.5069,\n      \"reason\": \"The skill description matches these query terms: existing, structured, decision, code.\"\n    }\n  ],\n  \"loaded_skill_id\": null\n}","metadata":{"status":"matched","loadedSkillID":null,"truncated":false},"title":"Found 3 skills","time":{"start":1788951409818,"end":1788951409821}},"id":"prt_g001a085d02c6c001okn4CENYP","sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","messageID":"msg_g001a085d00191001C15RR4qji"}}
+{"type":"tool_use","timestamp":1788951409968,"sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","part":{"type":"tool","tool":"bash","callID":"call_2e6da9e1680347529ee1a333","state":{"status":"completed","input":{"command":"ls research/issue-163/ 2>/dev/null; ls research 2>/dev/null; ls","description":"List research directory and repo root"},"output":"outward.json\nstage_APPLICABILITY.events.jsonl\nstage_APPLICABILITY.mimo.err.log\nstage_OUTWARD.events.jsonl\nstage_OUTWARD.mimo.err.log\ntask_tree.json\nbatch-processing\nbuild-mode\ncontract-testing\nfull-audit\ninterstitial-tools\nissue-161\nissue-163\nissue-245-research.md\nissue-256\nissue-260\nissue-261\nissue-262\nissue-263\nllm-craft-api\nllm-craft-deep\nquality-tools\nresearch-methodology\nrune-efficiency\nsafety-override\ntextual-craft\ntool-calling\nuncensored-models\nv1\nworkflow-audit\nAGENTS.md\nalternatives.json\nbackups\nconfig\ndocs\nhenxels_checks.py\nhenxels.yaml\nlint-baseline.json\nmemory\nplans\nPRD.md\nprompts\n__pycache__\npyproject.toml\npyright-baseline.json\npyrightconfig.json\nREADME.md\nreports\nrequirements-ci.txt\nresearch\nscripts\nshared\nspecs\nsrc\nsurvey\ntests\nwal-risks.json\n","metadata":{"output":"outward.json\nstage_APPLICABILITY.events.jsonl\nstage_APPLICABILITY.mimo.err.log\nstage_OUTWARD.events.jsonl\nstage_OUTWARD.mimo.err.log\ntask_tree.json\nbatch-processing\nbuild-mode\ncontract-testing\nfull-audit\ninterstitial-tools\nissue-161\nissue-163\nissue-245-research.md\nissue-256\nissue-260\nissue-261\nissue-262\nissue-263\nllm-craft-api\nllm-craft-deep\nquality-tools\nresearch-methodology\nrune-efficiency\nsafety-override\ntextual-craft\ntool-calling\nuncensored-models\nv1\nworkflow-audit\nAGENTS.md\nalternatives.json\nbackups\nconfig\ndocs\nhenxels_checks.py\nhenxels.yaml\nlint-baseline.json\nmemory\nplans\nPRD.md\nprompts\n__pycache__\npyproject.toml\npyright-baseline.json\npyrightconfig.json\nREADME.md\nreports\nrequirements-ci.txt\nresearch\nscripts\nshared\nspecs\nsrc\nsurvey\ntests\nwal-risks.json\n","exit":0,"description":"List research directory and repo root","truncated":false},"title":"List research directory and repo root","time":{"start":1788951409961,"end":1788951409965}},"id":"prt_g001a085d030210016Hamb7x7N","sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","messageID":"msg_g001a085d00191001C15RR4qji"}}
+{"type":"step_finish","timestamp":1788951410077,"sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","part":{"id":"prt_g001a085d0352f001u7nzqPQCs","reason":"tool-calls","snapshot":"48539978cc6be37eb58deb52a18fb7b2e4654cf7","messageID":"msg_g001a085d00191001C15RR4qji","sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","type":"step-finish","tokens":{"total":28758,"input":28574,"output":184,"reasoning":0,"cache":{"write":0,"read":0}},"cost":0}}
+{"type":"step_start","timestamp":1788951417899,"sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","part":{"id":"prt_g001a085d054290014iAkJocwe","messageID":"msg_g001a085d03628001aO2kspOq2","sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","snapshot":"db849ccee7016cd8061d48c31d8891432523c3f1","type":"step-start"}}
+{"type":"text","timestamp":1788951418900,"sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","part":{"id":"prt_g001a085d054d3002knCM1IxSw","messageID":"msg_g001a085d03628001aO2kspOq2","sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","type":"text","text":"No skill matches exactly — this is a bespoke research-triage pipeline step, so I'll proceed manually. Reading the accepted OUTWARD dossier and the task context now.","time":{"start":1788951418067,"end":1788951418898}}}
+{"type":"tool_use","timestamp":1788951418910,"sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","part":{"type":"tool","tool":"read","callID":"call_ac097ee67a37402c9fc9ea1b","state":{"status":"completed","input":{"file_path":"research/issue-163/outward.json"},"output":"<path>/mnt/workdrive/issue161-harness/research/issue-163/outward.json</path>\n<type>file</type>\n<content>\n1: {\n2:   \"stage\": \"OUTWARD\",\n3:   \"process_id\": \"research-163-r1\",\n4:   \"issue\": 163,\n5:   \"round\": 1,\n6:   \"subquestion\": \"Address: Temporal graph backend spike: Neo4j vs FalkorDB (LadybugDB experimental; Graphiti as reference)\",\n7:   \"discovery\": {\n8:     \"queries\": [\n9:       {\n10:         \"id\": \"Q1\",\n11:         \"tool\": \"webfetch (DuckDuckGo HTML)\",\n12:         \"query\": \"neo4j vs falkordb graph database benchmark comparison\",\n13:         \"receipt\": \"fetched OK; 10 results returned inline\"\n14:       },\n15:       {\n16:         \"id\": \"Q2\",\n17:         \"tool\": \"webfetch (DuckDuckGo HTML)\",\n18:         \"query\": \"graphiti zep temporal knowledge graph agent memory neo4j falkordb\",\n19:         \"receipt\": \"fetched OK; 10 results returned inline\"\n20:       },\n21:       {\n22:         \"id\": \"Q3\",\n23:         \"tool\": \"webfetch (DuckDuckGo HTML)\",\n24:         \"query\": \"ladybugdb graph database kuzu fork\",\n25:         \"receipt\": \"fetched OK; 10 results returned inline\"\n26:       },\n27:       {\n28:         \"id\": \"Q4\",\n29:         \"tool\": \"webfetch (DuckDuckGo HTML)\",\n30:         \"query\": \"falkordb redisgraph successor cypher features github\",\n31:         \"receipt\": \"fetched OK; 10 results returned inline\"\n32:       },\n33:       {\n34:         \"id\": \"Q5\",\n35:         \"tool\": \"webfetch (DuckDuckGo HTML)\",\n36:         \"query\": \"neo4j temporal versioning bitemporal cypher valid time\",\n37:         \"receipt\": \"fetched OK; 10 results returned inline\"\n38:       }\n39:     ],\n40:     \"sources_discovered\": [\n41:       { \"id\": \"O1\", \"url\": \"https://aimultiple.com/graph-databases\", \"class\": \"external (independent benchmark, updated 2026-04-15)\", \"note\": \"SELECTED and read\" },\n42:       { \"id\": \"O2\", \"url\": \"https://www.falkordb.com/blog/graph-database-performance-benchmarks-falkordb-vs-neo4j/\", \"class\": \"external (vendor blog, pub 2024-12-02, updated 2026-08-23)\", \"note\": \"SELECTED and read\" },\n43:       { \"id\": \"O3\", \"url\": \"https://www.puppygraph.com/blog/falkordb-vs-neo4j\", \"class\": \"external (competing-vendor comparison)\", \"note\": \"not selected — competing vendor has stake in the comparison\" },\n44:       { \"id\": \"O4\", \"url\": \"https://knodegraph.com/blog/falkordb-vs-neo4j/\", \"class\": \"external (third-party blog w/ 2026 benchmarks)\", \"note\": \"not selected — O1 covers the independent-benchmark slot with fuller methodology\" },\n45:       { \"id\": \"O5\", \"url\": \"https://github.com/FalkorDB/benchmark\", \"class\": \"repo (vendor benchmark harness)\", \"note\": \"SELECTED; README 404 on master and main; repo metadata read via GitHub API instead\" },\n46:       { \"id\": \"O6\", \"url\": \"https://www.plushcap.com/content/falkordb/blog/falkordb-falkordb-vs-neo4j-graph-database-performance-benchmarks\", \"class\": \"external (mirror of O2)\", \"note\": \"not selected — duplicate\" },\n47:       { \"id\": \"O7\", \"url\": \"https://inferensys.com/differences/neuro-symbolic-ai-frameworks/knowledge-graph-construction-tools/neo4j-vs-falkordb\", \"class\": \"external (aggregator comparison)\", \"note\": \"not selected\" },\n48:       { \"id\": \"O8\", \"url\": \"https://inferensys.com/differences/ai-software-factory-platforms/code-knowledge-graph-systems/neo4j-vs-falkordb-for-code-graphs\", \"class\": \"external (aggregator comparison)\", \"note\": \"not selected\" },\n49:       { \"id\": \"O9\", \"url\": \"https://3nuggets.io/compare-neo4j-vs-falkordb\", \"class\": \"external (practitioner fit comparison)\", \"note\": \"not selected\" },\n50:       { \"id\": \"O10\", \"url\": \"https://github.com/getzep/graphiti\", \"class\": \"repo (Graphiti primary)\", \"note\": \"SELECTED and read (README via raw.githubusercontent.com/main)\" },\n51:       { \"id\": \"O11\", \"url\": \"https://neo4j.com/blog/developer/graphiti-knowledge-graph-memory/\", \"class\": \"external (Neo4j official blog on Graphiti)\", \"note\": \"not selected — O10 is primary\" },\n52:       { \"id\": \"O12\", \"url\": \"https://docs.falkordb.com/agentic-memory/graphiti\", \"class\": \"external (FalkorDB vendor docs)\", \"note\": \"not selected\" },\n53:       { \"id\": \"O13\", \"url\": \"https://github.com/Memory-Agents/graphiti/\", \"class\": \"repo (mirror)\", \"note\": \"not selected — duplicate of O10\" },\n54:       { \"id\": \"O14\", \"url\": \"https://codex.danielvaughan.com/2026/03/30/graphiti-agent-memory-store/\", \"class\": \"external (practitioner review)\", \"note\": \"not selecLine truncated
+{"type":"tool_use","timestamp":1788951418913,"sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","part":{"type":"tool","tool":"read","callID":"call_9f981917f1c7420084d6cfeb","state":{"status":"completed","input":{"file_path":"research/issue-163/task_tree.json"},"output":"<path>/mnt/workdrive/issue161-harness/research/issue-163/task_tree.json</path>\n<type>file</type>\n<content>\n1: {\n2:   \"issue\": 163,\n3:   \"round\": 1,\n4:   \"current_stage\": \"APPLICABILITY\",\n5:   \"completed_stages\": [\n6:     \"ISSUE\",\n7:     \"INWARD\",\n8:     \"OUTWARD\"\n9:   ],\n10:   \"artifacts\": {\n11:     \"ISSUE\": {\n12:       \"contract\": {\n13:         \"issue\": 163,\n14:         \"title\": \"Temporal graph backend spike: Neo4j vs FalkorDB (LadybugDB experimental; Graphiti as reference)\",\n15:         \"question_type\": \"mixed\",\n16:         \"sub_questions\": [\n17:           \"Address: Temporal graph backend spike: Neo4j vs FalkorDB (LadybugDB experimental; Graphiti as reference)\"\n18:         ],\n19:         \"required_stages\": [\n20:           \"ISSUE\",\n21:           \"INWARD\",\n22:           \"OUTWARD\",\n23:           \"ADVERSARIAL\",\n24:           \"INNOVATION\",\n25:           \"SYNTHESIS\",\n26:           \"QUALIFY\"\n27:         ],\n28:         \"skipped_stages\": {\n29:           \"APPLICABILITY\": \"No OUTWARD research to ground against Rune.\"\n30:         },\n31:         \"evidence_classes\": [\n32:           \"repo\",\n33:           \"external\"\n34:         ],\n35:         \"sufficient_evidence\": \"\\u22652 code-path citations for INWARD; \\u22652 unique URLs for OUTWARD (if required)\",\n36:         \"expected_artifact\": \"synthesis.json\",\n37:         \"ambiguous\": false,\n38:         \"needs_mimo\": false,\n39:         \"source\": \"deterministic\"\n40:       },\n41:       \"deterministic\": true\n42:     },\n43:     \"INWARD\": {\n44:       \"context\": {\n45:         \"keywords\": [\n46:           \"temporal\",\n47:           \"graph\",\n48:           \"backend\",\n49:           \"spike\",\n50:           \"neo\",\n51:           \"falkordb\",\n52:           \"ladybugdb\",\n53:           \"experimental\",\n54:           \"graphiti\",\n55:           \"reference\",\n56:           \"plain\",\n57:           \"summary\",\n58:           \"architecture_frontier_handoff\",\n59:           \"compare\",\n60:           \"graph\",\n61:           \"backends\",\n62:           \"rune\",\n63:           \"structural\",\n64:           \"projection\",\n65:           \"episodes\"\n66:         ],\n67:         \"umbrella_matches\": [\n68:           {\n69:             \"umbrella\": \"memory\",\n70:             \"module\": \"graph_memory\",\n71:             \"keyword\": \"graph\"\n72:           },\n73:           {\n74:             \"umbrella\": \"memory\",\n75:             \"module\": \"graph_shard_bridge\",\n76:             \"keyword\": \"graph\"\n77:           },\n78:           {\n79:             \"umbrella\": \"orchestration\",\n80:             \"module\": \"rune_operator\",\n81:             \"keyword\": \"rune\"\n82:           },\n83:           {\n84:             \"umbrella\": \"orchestration\",\n85:             \"module\": \"rune_tui\",\n86:             \"keyword\": \"rune\"\n87:           },\n88:           {\n89:             \"umbrella\": \"orchestration\",\n90:             \"module\": \"rune_graphic\",\n91:             \"keyword\": \"graph\"\n92:           },\n93:           {\n94:             \"umbrella\": \"orchestration\",\n95:             \"module\": \"rune_spinner\",\n96:             \"keyword\": \"rune\"\n97:           },\n98:           {\n99:             \"umbrella\": \"orchestration\",\n100:             \"module\": \"rune_profiler\",\n101:             \"keyword\": \"rune\"\n102:           }\n103:         ],\n104:         \"candidate_files\": [\n105:           \"src/rune/curator.py\",\n106:           \"src/rune/rune_tui.py\",\n107:           \"src/rune/graph_memory.py\",\n108:           \"src/rune/sleep_time.py\",\n109:           \"src/rune/elastic_cognition.py\",\n110:           \"src/rune/rune_operator.py\",\n111:           \"src/rune/rune_profiler.py\",\n112:           \"src/rune/warm_router.py\",\n113:           \"src/rune/abstraction.py\",\n114:           \"src/rune/canary_native.py\",\n115:           \"src/rune/canary_p0_04.py\",\n116:           \"src/rune/canary_p1_07.py\",\n117:           \"src/rune/complexity_scorer.py\",\n118:           \"src/rune/identity_anchors.py\",\n119:           \"src/rune/memory_consolidation.py\"\n120:         ],\n121:         \"candidate_tests\": [\n122:           \"tests/test_retrieval_benchmark.py\",\n123:           \"tests/test_orchestration_memory_synthesis.py\",\n124:           \"tests/test_p1_03_memory_selection.py\",\n125:           \"tests/test_p1_06_model_routing.py\",\n126:           \"tests/test_p1_07_runtime_objects.py\",\n127:           \"tests/test_version_convergence.py\",\n128:           \"tests/test_adversarial_executor.py\",\n129:           \Line truncated
+{"type":"step_finish","timestamp":1788951419186,"sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","part":{"id":"prt_g001a085d05820001PXgOkvCmb","reason":"tool-calls","snapshot":"23c7547e221e08adff5c183728bd27bd347fdfc8","messageID":"msg_g001a085d03628001aO2kspOq2","sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","type":"step-finish","tokens":{"total":29214,"input":501,"output":105,"reasoning":0,"cache":{"write":0,"read":28608}},"cost":0}}
+{"type":"step_start","timestamp":1788951428962,"sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","part":{"id":"prt_g001a085d07f600010FQJUoXUO","messageID":"msg_g001a085d05ab7001HxOyBdecw","sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","snapshot":"a365d2ab71ac14d61f3ea9e7c28d6e9666b14327","type":"step-start"}}
+{"type":"text","timestamp":1788951430166,"sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","part":{"id":"prt_g001a085d07ffc001p6yVhouLY","messageID":"msg_g001a085d05ab7001HxOyBdecw","sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","type":"text","text":"I have the dossier. Now I need to ground against Rune's actual graph memory surface (`src/rune/graph_memory.py` per the INWARD claims) to determine integration points.","time":{"start":1788951429116,"end":1788951430164}}}
+{"type":"tool_use","timestamp":1788951430228,"sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","part":{"type":"tool","tool":"bash","callID":"call_eb124832957949ffa92cbab3","state":{"status":"completed","input":{"command":"wc -l src/rune/graph_memory.py src/rune/curator.py src/rune/sleep_time.py src/rune/elastic_cognition.py 2>/dev/null; ls memory/graph/ 2>/dev/null","description":"Check sizes of inward-relevant files"},"output":"   416 src/rune/graph_memory.py\n  1612 src/rune/curator.py\n   899 src/rune/sleep_time.py\n   751 src/rune/elastic_cognition.py\n  3678 total\n","metadata":{"output":"   416 src/rune/graph_memory.py\n  1612 src/rune/curator.py\n   899 src/rune/sleep_time.py\n   751 src/rune/elastic_cognition.py\n  3678 total\n","exit":2,"description":"Check sizes of inward-relevant files","truncated":false},"title":"Check sizes of inward-relevant files","time":{"start":1788951430224,"end":1788951430227}},"id":"prt_g001a085d08005001N5J6eTe64","sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","messageID":"msg_g001a085d05ab7001HxOyBdecw"}}
+{"type":"step_finish","timestamp":1788951430430,"sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","part":{"id":"prt_g001a085d084540010UilFQvi2","reason":"tool-calls","snapshot":"db9aa415a15c14b84f4e2d6e2ddaed784abfc797","messageID":"msg_g001a085d05ab7001HxOyBdecw","sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","type":"step-finish","tokens":{"total":49465,"input":20164,"output":181,"reasoning":0,"cache":{"write":0,"read":29120}},"cost":0}}
+{"type":"step_start","timestamp":1788951440284,"sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","part":{"id":"prt_g001a085d0ab9b001jlMcgQccS","messageID":"msg_g001a085d08688001yPRsuuYIC","sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","snapshot":"97f693a9cbbc019ccd6750f7613d1791d2dc7e8c","type":"step-start"}}
+{"type":"tool_use","timestamp":1788951440620,"sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","part":{"type":"tool","tool":"read","callID":"call_4a51679b338e4f238ce79c77","state":{"status":"completed","input":{"file_path":"src/rune/graph_memory.py"},"output":"<path>/mnt/workdrive/issue161-harness/src/rune/graph_memory.py</path>\n<type>file</type>\n<content>\n1: #!/usr/bin/env python3\n2: \"\"\"Graph memory tier — concept-mediated temporal knowledge graph for the agent.\n3: \n4: Built from the 2025-2026 academic frontier (briefs in\n5: `/tmp/opencode/memory-research/agentic-memory-brief.md` and\n6: `~/.firecrawl/claim-audit-2026/brief.md`). Exceeds the entity-hub approach by\n7: following the research convergence:\n8: \n9:   - CONCEPT-MEDIATED, not entity-centric (GAAMA 2603.27910): nodes are typed\n10:     (person / project / concept / tool / preference / fact), which kills the\n11:     \"mega-hub\" dilution Letta/Graphiti hit with one entity connected to\n12:     everything.\n13:   - BI-TEMPORAL edges (Graphiti 2501.13956): `valid_from/valid_until` (when\n14:     the fact is true in the world) + `learned_at` (when we learned it).\n15:   - INCREMENTAL construction (TG-RAG 2510.13590, iText2KG 2409.03284): merge\n16:     only, no full re-index; entity resolution via aliases, never blind merges.\n17:   - SUPERSEDE, never delete (Write-Time Gating 2603.15994, SSGM 2603.11768):\n18:     contradicting edges are marked superseded with the new one taking over;\n19:     history preserved for audit.\n20:   - WRITE-TIME GATING (2603.15994, D-MEM 2603.14597): routine/salience-weak\n21:     facts never touch the graph; surprises and contradictions do. The biggest\n22:     token saver in the literature.\n23:   - PROVENANCE on every edge (MemORAI 2605.01386): each edge carries the\n24:     evidence text + source, which is exactly what the claim-audit layer needs.\n25: \n26: Storage: headless SQLite at `memory/graph/graph.sqlite` — reachable by the\n27: sleep-time curator directly (no MCP dependency). Schema below.\n28: \n29: Usage:\n30:   graph_memory.py add <subj> <pred> <obj> --type subj_type --evidence \"...\"\n31:                        [--source X] [--confidence 0.0-1.0] [--strength N]\n32:   graph_memory.py add-bulk <json-file>\n33:   graph_memory.py query <entity-or-concept> [--hops N] [--latest-only]\n34:   graph_memory.py resolve <name>\n35:   graph_memory.py neighbors <entity>\n36:   graph_memory.py stats\n37:   graph_memory.py superseded-by <subj> <pred> <obj>  (manual conflict flag)\n38: \"\"\"\n39: \n40: import argparse\n41: import json\n42: import os\n43: import sqlite3\n44: import sys\n45: from collections import deque\n46: from datetime import datetime, timezone\n47: \n48: _SD = os.path.dirname(os.path.abspath(__file__))\n49: if _SD not in sys.path:\n50:     sys.path.insert(0, _SD)\n51: import memory_env\n52: \n53: MEM_DIR = memory_env.memory_dir()\n54: GRAPH_DIR = os.path.join(MEM_DIR, \"graph\")\n55: DB_PATH = os.path.join(GRAPH_DIR, \"graph.sqlite\")\n56: \n57: # Fixed predicate vocabulary — schema drift is a researched failure mode, so we\n58: # constrain the set of relationship types we accept. Unknown preds are refused\n59: # (the extractor maps free text onto this set).\n60: PREDICATES = {\n61:     \"works_on\", \"works_at\", \"teaches\", \"manages\", \"uses\", \"prefers\",\n62:     \"lives_in\", \"located_in\", \"has_role\", \"part_of\", \"leads\", \"builds\",\n63:     \"develops\", \"created\", \"interested_in\", \"knows\", \"collaborates_with\",\n64:     \"owned_by\", \"reports_to\", \"supports\", \"runs\", \"tracks\", \"related_to\",\n65:     \"based_on\", \"happens_on\", \"started_on\", \"ended_on\", \"responds_to\",\n66:     \"struggles_with\", \"likes\", \"dislikes\", \"avoided_by\", \"goal_of\",\n67: }\n68: \n69: # Node types.\n70: NODE_TYPES = {\"person\", \"project\", \"concept\", \"tool\", \"preference\",\n71:               \"organization\", \"place\", \"event\", \"skill\", \"artefact\"}\n72: \n73: # Confidence: evidence-gated (EvoKG-style f(frequency, recency, source_cred)).\n74: # We fold the curator's strength (0-5) into a 0-1 confidence.\n75: DEFAULT_CONF = 0.7\n76: \n77: \n78: def now_iso():\n79:     return datetime.now(timezone.utc).isoformat(timespec=\"seconds\")\n80: \n81: \n82: def connect():\n83:     os.makedirs(GRAPH_DIR, exist_ok=True)\n84:     db = sqlite3.connect(DB_PATH)\n85:     try:\n86:         db.row_factory = sqlite3.Row\n87:         db.executescript(\"\"\"\n88:         CREATE TABLE IF NOT EXISTS entities (\n89:             id INTEGER PRIMARY KEY AUTOINCREMENT,\n90:             name TEXT NOT NULL UNIQUE,\n91:             type TEXT NOT NULL DEFAULT 'concept',\n92:             summary TEXT DEFAULT '',\n93:             created_at TEXT NOT NULL\n94:         );\n95:         CREATE TABLE IF NOT EXISTS aliases (\n96:             entity_id INTEGER NOT NULL,\n97:             alias TEXT NOT NULL,\n98:             UNIQUE(entity_id, alias),\n99:             FOREIGN KEY(entity_Line truncated
+{"type":"step_finish","timestamp":1788951440651,"sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","part":{"id":"prt_g001a085d0aceb001jQR6LtKz2","reason":"tool-calls","snapshot":"fe03d33ae0aaa08bb1aeecc54d4c93738613f870","messageID":"msg_g001a085d08688001yPRsuuYIC","sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","type":"step-finish","tokens":{"total":49461,"input":164,"output":17,"reasoning":0,"cache":{"write":0,"read":49280}},"cost":0}}
+{"type":"step_start","timestamp":1788951546885,"sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","part":{"id":"prt_g001a085d24c03001zszgYbJ71","messageID":"msg_g001a085d0ad2e001SVRAIsy0z","sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","snapshot":"4faa10158baf5d4550bdcde744af66e43f6c9570","type":"step-start"}}
+{"type":"text","timestamp":1788951660703,"sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","part":{"id":"prt_g001a085d25c21002cvth08Rmj","messageID":"msg_g001a085d0ad2e001SVRAIsy0z","sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","type":"text","text":"I now have everything needed: the OUTWARD dossier (evidence E1–E30, sources O1–O45) and Rune's actual graph surface (`src/rune/graph_memory.py` — an embedded SQLite bi-temporal graph that already implements Graphiti's framework-layer temporal semantics). Now I'll classify each researched mechanism against that reality and write the applicability dossier.\n\nKey grounded observations driving the classification:\n- Rune's schema (`graph_memory.py:101-116`) already has bi-temporal edges (`valid_from`/`valid_until` + `learned_at`), supersede-not-delete, provenance, and write-time gating — i.e., the load-bearing fact of the reference architecture (semantics at framework layer, not in the DB) is already Rune's design.\n- The dossier's contradiction #4 and `repo_grounding_note` show both spiked backends (Neo4j server-shaped JVM, FalkorDB Redis module/SSPL) conflict with Rune's embedded/local-first posture, and neither offers native temporal versioning (E27–E28) — Rune's own schema is already ahead of both.\n- Real gaps vs the research: Rune preserves full history but `query()` can only see the present (no AS-OF time travel, NEP-001 E28–E30), and entry-point resolution is name/alias/substring only (no hybrid lexical retrieval, E18).","time":{"start":1788951551009,"end":1788951660696}}}
+{"type":"tool_use","timestamp":1788951660708,"sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","part":{"type":"tool","tool":"write","callID":"call_c6a83edc308b430a9db1f9b0","state":{"status":"completed","input":{"content":"{\n  \"stage\": \"APPLICABILITY\",\n  \"issue\": 163,\n  \"round\": 1,\n  \"process_id\": \"research-163-r1\",\n  \"grounding\": {\n    \"inward_claims_used\": [\"I3\", \"I1\", \"I4\", \"I5\"],\n    \"rune_reality\": \"src/rune/graph_memory.py is Rune's entire graph surface: a headless SQLite tier at memory/graph/graph.sqlite (no external graph DB dependency). Schema (lines 101-116) already implements: bi-temporal edges (valid_from/valid_until + learned_at), supersede-never-delete with status/superseded_by, per-edge provenance (evidence/source), confidence-gated writes (strength<3 gated out), typed concept-mediated nodes, and alias-based entity resolution. Query is name/alias/substring entry point + BFS over status='active' edges.\",\n    \"load_bearing_fact\": \"The dossier's repo_grounding_note and Graphiti (E17) confirm temporal semantics live at the framework layer above any backend. Rune already occupies that layer over SQLite. Neo4j and FalkorDB would be backends BELOW a layer Rune already owns, and neither offers native temporal versioning (E27, E28) - Rune's schema is already ahead of both on the spike's titular dimension.\"\n  },\n  \"candidates\": [\n    {\n      \"id\": \"C1\",\n      \"candidate\": \"Neo4j as replacement graph backend\",\n      \"source_ids\": [\"O1\", \"O2\", \"O38\", \"O41\"],\n      \"classification\": \"CONFLICTS_WITH_RUNE\",\n      \"integration_point\": \"Would replace src/rune/graph_memory.py's SQLite tier (memory/graph/graph.sqlite) with a server-backed Neo4j deployment reachable from curator.py / sleep_time.py.\",\n      \"benefit\": \"Deepest ecosystem, best planner on heavy aggregations (E3), mature tooling (E8).\",\n      \"cost\": \"Server + JVM process to operate; ~2.7GB heap for a 381K-node graph, ~5.2GB process RSS (E6) - two orders of magnitude above Rune's sub-1M-entity regime; 90ms cold start vs embedded alternatives (E4).\",\n      \"architectural_fit\": \"Poor. Rune is embedded/local-first with zero external service dependencies (I3: 'reachable by the sleep-time curator directly, no MCP dependency'). A networked JVM server reverses that posture. No source benchmarks Rune's single-node regime (dossier limitation #2).\",\n      \"authority_implications\": \"Introduces an external service and credentials into the memory tier; curator/sleep-time write authority would route through a network daemon instead of a local file.\",\n      \"risks\": \"Licensing (Community vs Enterprise constraints unevidenced, dossier limitation #5); no native temporal versioning - the spike's core dimension (E28-E30); migration cost for zero evidenced benefit at Rune's scale.\",\n      \"required_adaptation\": \"None - rejection is the correct disposition.\",\n      \"evidence\": [\"E2\", \"E3\", \"E4\", \"E6\", \"E8\", \"E27\", \"E28\", \"E29\"]\n    },\n    {\n      \"id\": \"C2\",\n      \"candidate\": \"FalkorDB as replacement graph backend\",\n      \"source_ids\": [\"O1\", \"O2\", \"O5\", \"O29\", \"O10\"],\n      \"classification\": \"CONFLICTS_WITH_RUNE\",\n      \"integration_point\": \"Would replace the SQLite tier; only embedded path is Graphiti's falkordblite extra (redislite-based, Python 3.12+) per E16.\",\n      \"benefit\": \"Strong concurrent throughput and low latency at scale (E2, E3, E9), implicit indexing (E5), GraphRAG positioning (E10).\",\n      \"cost\": \"Server-shaped: Redis 7.4 module, own container/ports, min 4GB RAM / 16GB recommended (E12, E25, E26). SSPLv1 core license (E25). Rust core rewrite (E11) resets part of the maturity story (dossier contradiction #3).\",\n      \"architectural_fit\": \"Poor. The headline advantages (6.7x throughput, p50/p99 wins) were measured on 381K-804K-element graphs under 8-32 thread concurrency (E1, E9) - not Rune's regime (single-node, sub-1M entities, agent-local). Vendor magnitudes are marketing-adjacent (dossier contradiction #1; O5 benchmark harness README unverifiable, E13).\",\n      \"authority_implications\": \"A Redis server in the memory path; even falkordblite drags in a redislite dependency and a Python 3.12 floor for a lateral move from SQLite.\",\n      \"risks\": \"RedisGraph lineage EOL'd Jan 2025 (dossier contradiction #3); no evidenced FalkorDB-native temporal features (dossier limitation #4); license incompatibility with Rune's MIT-family posture.\",\n      \"required_adaptation\": \"None - rejection is the correct disposition.\",\n      \"evidence\": [\"E1\", \"E2\", \"E3\", \"E5\", \"E9\", \"E10\", \"E11\", \"E12\", \"E13\", \"E16\", \"E25\", \"E26\"]\n    },\n    {\n      \"id\": \"C3\",\n      \"candidate\": \"LadybugDB as replacement graph backend\",\n      \"source_ids\": [\"O21\", \"O24\", \"O28\"],\n      \"classification\": \"INSUFFICIENT_EVIDENCE\",\n      \"integration_point\"Line truncated
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+{"type":"tool_use","timestamp":1788951669502,"sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","part":{"type":"tool","tool":"bash","callID":"call_11072974bc7f418ba5b8abd5","state":{"status":"completed","input":{"command":"python3 -c \"import json; d=json.load(open('research/issue-163/applicability.json')); print('valid JSON'); print('route:', d['route']); print('candidates:', len(d['candidates'])); [print(' ', c['id'], '->', c['classification']) for c in d['candidates']]\"","description":"Validate applicability.json structure and classifications"},"output":"valid JSON\nroute: INNOVATION_WARRANTED\ncandidates: 10\n  C1 -> CONFLICTS_WITH_RUNE\n  C2 -> CONFLICTS_WITH_RUNE\n  C3 -> INSUFFICIENT_EVIDENCE\n  C4 -> DIRECTLY_APPLICABLE\n  C5 -> APPLICABLE_WITH_ADAPTATION\n  C6 -> APPLICABLE_WITH_ADAPTATION\n  C7 -> TOO_COMPLEX_FOR_VALUE\n  C8 -> TOO_COMPLEX_FOR_VALUE\n  C9 -> PROMISING_FOR_INNOVATION\n  C10 -> TOO_COMPLEX_FOR_VALUE\n","metadata":{"output":"valid JSON\nroute: INNOVATION_WARRANTED\ncandidates: 10\n  C1 -> CONFLICTS_WITH_RUNE\n  C2 -> CONFLICTS_WITH_RUNE\n  C3 -> INSUFFICIENT_EVIDENCE\n  C4 -> DIRECTLY_APPLICABLE\n  C5 -> APPLICABLE_WITH_ADAPTATION\n  C6 -> APPLICABLE_WITH_ADAPTATION\n  C7 -> TOO_COMPLEX_FOR_VALUE\n  C8 -> TOO_COMPLEX_FOR_VALUE\n  C9 -> PROMISING_FOR_INNOVATION\n  C10 -> TOO_COMPLEX_FOR_VALUE\n","exit":0,"description":"Validate applicability.json structure and classifications","truncated":false},"title":"Validate applicability.json structure and classifications","time":{"start":1788951669497,"end":1788951669501}},"id":"prt_g001a085d423dc001L5nVrusWW","sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","messageID":"msg_g001a085d40902001JzXdcSouQ"}}
+{"type":"step_finish","timestamp":1788951669528,"sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","part":{"id":"prt_g001a085d42afe001VSTRKL7Bk","reason":"tool-calls","snapshot":"d5da261352c8097af274b8f23466cfa1ef248e13","messageID":"msg_g001a085d40902001JzXdcSouQ","sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","type":"step-finish","tokens":{"total":59443,"input":4569,"output":90,"reasoning":0,"cache":{"write":0,"read":54784}},"cost":0}}
+{"type":"step_start","timestamp":1788951677705,"sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","part":{"id":"prt_g001a085d44b07001oDf8l2FFh","messageID":"msg_g001a085d42b3c001Qr2mCmgZo","sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","snapshot":"69889b5af68548648700c57c3191028f6313d451","type":"step-start"}}
+{"type":"text","timestamp":1788951691381,"sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","part":{"id":"prt_g001a085d44b100027KsH8bf6S","messageID":"msg_g001a085d42b3c001Qr2mCmgZo","sessionID":"ses_-ffe5f7a2fff97ffeShe3jrJEB","type":"text","text":"APPLICABILITY stage complete. Wrote `research/issue-163/applicability.json` (valid JSON, 10 candidates, route decision recorded). No code modified, no research re-run, no stage advanced.\n\n## Classification summary\n\n**Grounding**: INWARD's claims I3/I1/I4/I5, verified against `src/rune/graph_memory.py:101-116` — Rune's graph surface is a headless SQLite tier that *already* implements the reference architecture's load-bearing pattern: bi-temporal edges (`valid_from`/`valid_until` + `learned_at`), supersede-never-delete, per-edge provenance, write-time gating. The dossier's own `repo_grounding_note` and Graphiti E17 (temporal semantics at framework layer, decoupled from storage) confirm Rune already occupies that layer.\n\n**Candidates**:\n| ID | Candidate | Classification |\n|---|---|---|\n| C1 | Neo4j backend | CONFLICTS_WITH_RUNE — JVM server, ~5GB RSS (E6), no native temporal versioning (E28-E30) |\n| C2 | FalkorDB backend | CONFLICTS_WITH_RUNE — Redis module/SSPLv1, only embedded path is falkordblite (E16); benchmark advantages are outside Rune's regime |\n| C3 | LadybugDB backend | INSUFFICIENT_EVIDENCE — best *shape* fit (embedded/MIT/FTS/vector, E20) but young revival fork (E24), no Graphiti driver, zero Rune-regime benchmarks |\n| C4 | Graphiti bi-temporal model | DIRECTLY_APPLICABLE — already integrated 1:1 |\n| C5 | NEP-001 \"AS OF\" queries | APPLICABLE_WITH_ADAPTATION — time-travel over history Rune already stores but can't query (`--as-of` filter in `query()`) |\n| C6 | Hybrid retrieval entry | APPLICABLE_WITH_ADAPTATION — FTS5 lexical tier for entity resolution (currently exact/alias/substring only) |\n| C7/C8/C10 | Driver abstraction / Cypher temporal types / LLM ingestion | TOO_COMPLEX_FOR_VALUE |\n| C9 | Ladybug Memory lakehouse stack | PROMISING_FOR_INNOVATION — adjacent-field lead, not coupled to this spike |\n\n**Route: INNOVATION_WARRANTED** — the literal spike question (backend choice) resolves to standard: no swap is warranted. But combining research with Rune's architecture yields two genuinely missing capabilities that no standard drop-in provides: temporal AS-OF queries (C5) and lexical hybrid entry (C6), both staying inside the embedded, no-new-dependency posture. Notes flag what ADVERSARIAL should attack (NULL/half-open-interval semantics, FTS5 write amplification) and carry the dossier's evidence limitations forward.","time":{"start":1788951677712,"end":1788951691379}}}
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@@ -0,0 +1,33 @@
+{"type":"step_start","timestamp":1788951891614,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"id":"prt_g001a085d78e9b001YKXg0dTZV","messageID":"msg_g001a085d75e2c001ddwRuEVcg","sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","snapshot":"6c23a18f5e584f4ea85e3895584633cd584374bb","type":"step-start"}}
+{"type":"text","timestamp":1788951893751,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"id":"prt_g001a085d78f5d0019210edNCF","messageID":"msg_g001a085d75e2c001ddwRuEVcg","sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","type":"text","text":"I'll start by searching for a matching skill, then examine the research context and code before forming a conclusion.","time":{"start":1788951891805,"end":1788951893748}}}
+{"type":"tool_use","timestamp":1788951893755,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"type":"tool","tool":"skill_search","callID":"call_880953f93e3e42c88c0f9b75","state":{"status":"completed","input":{"query":"Evaluate research candidates for compositional innovation against existing codebase architecture and write structured JSON verdict (conclusion ADOPT/ADAPT/BORROW/BUILD or NO_INNOVATION_WARRANTED) to research output file. Input: research stage prompt with candidate list and source code. Output: innovation.json. Audience: research pipeline."},"output":"{\n  \"status\": \"matched\",\n  \"results\": [\n    {\n      \"skill_id\": \"super-research\",\n      \"name\": \"super-research\",\n      \"score\": 0.6625,\n      \"reason\": \"The skill description matches these query terms: research, candidate, against, write, or, no, prompt, source, code.\"\n    },\n    {\n      \"skill_id\": \"research-paper-writing\",\n      \"name\": \"research-paper-writing\",\n      \"score\": 0.5854,\n      \"reason\": \"The skill description matches these query terms: write, conclusion, build, or, file.\"\n    },\n    {\n      \"skill_id\": \"mimocode-docs\",\n      \"name\": \"mimocode-docs\",\n      \"score\": 0.5605,\n      \"reason\": \"The skill description matches these query terms: existing, json, borrow, build, or, file, prompt.\"\n    }\n  ],\n  \"loaded_skill_id\": null\n}","metadata":{"status":"matched","loadedSkillID":null,"truncated":false},"title":"Found 3 skills","time":{"start":1788951893750,"end":1788951893752}},"id":"prt_g001a085d78f61001CtHGQd7Yv","sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","messageID":"msg_g001a085d75e2c001ddwRuEVcg"}}
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+{"type":"step_start","timestamp":1788951903714,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"id":"prt_g001a085d7bde00013y3l4WsB3","messageID":"msg_g001a085d797b3001mBqbUsAJo","sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","snapshot":"fa29a2ea683615719af7c44d951923a013eead31","type":"step-start"}}
+{"type":"text","timestamp":1788951903903,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"id":"prt_g001a085d7be8e001EYTF0JWPc","messageID":"msg_g001a085d797b3001mBqbUsAJo","sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","type":"text","text":"No exact skill match — this is a pipeline verdict stage, so I'll proceed directly. Let me verify the candidate claims against the actual research artifacts and code.","time":{"start":1788951903886,"end":1788951903902}}}
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+{"type":"tool_use","timestamp":1788951904064,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"type":"tool","tool":"glob","callID":"call_fe74e78ee4174eb5bcc2926c","state":{"status":"completed","input":{"pattern":"research/issue-163/**"},"output":"/mnt/workdrive/issue161-harness/research/issue-163/stage_INNOVATION.events.jsonl\n/mnt/workdrive/issue161-harness/research/issue-163/stage_INNOVATION.mimo.err.log\n/mnt/workdrive/issue161-harness/research/issue-163/.consumed_issue-163-INNOVATION-1\n/mnt/workdrive/issue161-harness/research/issue-163/task_tree.json\n/mnt/workdrive/issue161-harness/research/issue-163/stage_APPLICABILITY.events.jsonl\n/mnt/workdrive/issue161-harness/research/issue-163/applicability.json\n/mnt/workdrive/issue161-harness/research/issue-163/stage_APPLICABILITY.mimo.err.log\n/mnt/workdrive/issue161-harness/research/issue-163/.consumed_issue-163-APPLICABILITY-1\n/mnt/workdrive/issue161-harness/research/issue-163/stage_OUTWARD.events.jsonl\n/mnt/workdrive/issue161-harness/research/issue-163/outward.json\n/mnt/workdrive/issue161-harness/research/issue-163/stage_OUTWARD.mimo.err.log\n/mnt/workdrive/issue161-harness/research/issue-163/.consumed_issue-163-OUTWARD-1\n/mnt/workdrive/issue161-harness/research/issue-163/.consumed_issue-163-INWARD-1\n/mnt/workdrive/issue161-harness/research/issue-163/.consumed_issue-163-ISSUE-1","metadata":{"count":14,"truncated":false},"title":"","time":{"start":1788951903903,"end":1788951904063}},"id":"prt_g001a085d7be93001wZbNq3Cw0","sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","messageID":"msg_g001a085d797b3001mBqbUsAJo"}}
+{"type":"step_finish","timestamp":1788951904306,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"id":"prt_g001a085d7bf40001N68pdLLKw","reason":"tool-calls","snapshot":"309646e87101537099d3a2da12a09febcf68ef65","messageID":"msg_g001a085d797b3001mBqbUsAJo","sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","type":"step-finish","tokens":{"total":29234,"input":313,"output":121,"reasoning":0,"cache":{"write":0,"read":28800}},"cost":0}}
+{"type":"step_start","timestamp":1788951913561,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"id":"prt_g001a085d7e456001J5gGYDWwm","messageID":"msg_g001a085d7c175001Mhl8PCtDl","sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","snapshot":"5af5483b877decd3b11d50f8cf94482b8fe25b1c","type":"step-start"}}
+{"type":"text","timestamp":1788951914578,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"id":"prt_g001a085d7e4f0001nvTy4ngXC","messageID":"msg_g001a085d7c175001Mhl8PCtDl","sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","type":"text","text":"The research dir is at `/mnt/workdrive/issue161-harness`. Let me locate the rune repo and read the prior-stage artifacts to understand the evidence derivation.","time":{"start":1788951913712,"end":1788951914576}}}
+{"type":"tool_use","timestamp":1788951914705,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"type":"tool","tool":"read","callID":"call_451ebeeb22ee4aa2af07e451","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/research/issue-163/applicability.json"},"output":"<path>/mnt/workdrive/issue161-harness/research/issue-163/applicability.json</path>\n<type>file</type>\n<content>\n1: {\n2:   \"stage\": \"APPLICABILITY\",\n3:   \"issue\": 163,\n4:   \"round\": 1,\n5:   \"process_id\": \"research-163-r1\",\n6:   \"grounding\": {\n7:     \"inward_claims_used\": [\"I3\", \"I1\", \"I4\", \"I5\"],\n8:     \"rune_reality\": \"src/rune/graph_memory.py is Rune's entire graph surface: a headless SQLite tier at memory/graph/graph.sqlite (no external graph DB dependency). Schema (lines 101-116) already implements: bi-temporal edges (valid_from/valid_until + learned_at), supersede-never-delete with status/superseded_by, per-edge provenance (evidence/source), confidence-gated writes (strength<3 gated out), typed concept-mediated nodes, and alias-based entity resolution. Query is name/alias/substring entry point + BFS over status='active' edges.\",\n9:     \"load_bearing_fact\": \"The dossier's repo_grounding_note and Graphiti (E17) confirm temporal semantics live at the framework layer above any backend. Rune already occupies that layer over SQLite. Neo4j and FalkorDB would be backends BELOW a layer Rune already owns, and neither offers native temporal versioning (E27, E28) - Rune's schema is already ahead of both on the spike's titular dimension.\"\n10:   },\n11:   \"candidates\": [\n12:     {\n13:       \"id\": \"C1\",\n14:       \"candidate\": \"Neo4j as replacement graph backend\",\n15:       \"source_ids\": [\"O1\", \"O2\", \"O38\", \"O41\"],\n16:       \"classification\": \"CONFLICTS_WITH_RUNE\",\n17:       \"integration_point\": \"Would replace src/rune/graph_memory.py's SQLite tier (memory/graph/graph.sqlite) with a server-backed Neo4j deployment reachable from curator.py / sleep_time.py.\",\n18:       \"benefit\": \"Deepest ecosystem, best planner on heavy aggregations (E3), mature tooling (E8).\",\n19:       \"cost\": \"Server + JVM process to operate; ~2.7GB heap for a 381K-node graph, ~5.2GB process RSS (E6) - two orders of magnitude above Rune's sub-1M-entity regime; 90ms cold start vs embedded alternatives (E4).\",\n20:       \"architectural_fit\": \"Poor. Rune is embedded/local-first with zero external service dependencies (I3: 'reachable by the sleep-time curator directly, no MCP dependency'). A networked JVM server reverses that posture. No source benchmarks Rune's single-node regime (dossier limitation #2).\",\n21:       \"authority_implications\": \"Introduces an external service and credentials into the memory tier; curator/sleep-time write authority would route through a network daemon instead of a local file.\",\n22:       \"risks\": \"Licensing (Community vs Enterprise constraints unevidenced, dossier limitation #5); no native temporal versioning - the spike's core dimension (E28-E30); migration cost for zero evidenced benefit at Rune's scale.\",\n23:       \"required_adaptation\": \"None - rejection is the correct disposition.\",\n24:       \"evidence\": [\"E2\", \"E3\", \"E4\", \"E6\", \"E8\", \"E27\", \"E28\", \"E29\"]\n25:     },\n26:     {\n27:       \"id\": \"C2\",\n28:       \"candidate\": \"FalkorDB as replacement graph backend\",\n29:       \"source_ids\": [\"O1\", \"O2\", \"O5\", \"O29\", \"O10\"],\n30:       \"classification\": \"CONFLICTS_WITH_RUNE\",\n31:       \"integration_point\": \"Would replace the SQLite tier; only embedded path is Graphiti's falkordblite extra (redislite-based, Python 3.12+) per E16.\",\n32:       \"benefit\": \"Strong concurrent throughput and low latency at scale (E2, E3, E9), implicit indexing (E5), GraphRAG positioning (E10).\",\n33:       \"cost\": \"Server-shaped: Redis 7.4 module, own container/ports, min 4GB RAM / 16GB recommended (E12, E25, E26). SSPLv1 core license (E25). Rust core rewrite (E11) resets part of the maturity story (dossier contradiction #3).\",\n34:       \"architectural_fit\": \"Poor. The headline advantages (6.7x throughput, p50/p99 wins) were measured on 381K-804K-element graphs under 8-32 thread concurrency (E1, E9) - not Rune's regime (single-node, sub-1M entities, agent-local). Vendor magnitudes are marketing-adjacent (dossier contradiction #1; O5 benchmark harness README unverifiable, E13).\",\n35:       \"authority_implications\": \"A Redis server in the memory path; even falkordblite drags in a redislite dependency and a Python 3.12 floor for a lateral move from SQLite.\",\n36:       \"risks\": \"RedisGraph lineage EOL'd Jan 2025 (dossier contradiction #3); no evidenced FalkorDB-native temporal features (dossier limitation #4); license incompatibility with Rune's MIT-family posture.\",\n37:       \"required_adaptation\": \"None - rejection is the correct disposition.\",\n38:       \"evidence\": [\Line truncated
+{"type":"tool_use","timestamp":1788951914707,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"type":"tool","tool":"glob","callID":"call_7e109a187a71440782c4cca6","state":{"status":"completed","input":{"pattern":"**/src/rune/graph_memory.py","path":"/mnt/workdrive/issue161-harness"},"output":"/mnt/workdrive/issue161-harness/src/rune/graph_memory.py","metadata":{"count":1,"truncated":false},"title":"","time":{"start":1788951914578,"end":1788951914706}},"id":"prt_g001a085d7e4f5001J4kt8yVnL","sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","messageID":"msg_g001a085d7c175001Mhl8PCtDl"}}
+{"type":"step_finish","timestamp":1788951914897,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"id":"prt_g001a085d7e8d3001OXgvdbaQf","reason":"tool-calls","snapshot":"4866ca38a98c1a89dd59c8d9b327e70a8fd34008","messageID":"msg_g001a085d7c175001Mhl8PCtDl","sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","type":"step-finish","tokens":{"total":29662,"input":425,"output":117,"reasoning":0,"cache":{"write":0,"read":29120}},"cost":0}}
+{"type":"step_start","timestamp":1788951923824,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"id":"prt_g001a085d80c6e001b4c3ks6BA","messageID":"msg_g001a085d7eae2001zeX90Xx0h","sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","snapshot":"6d427c11699efc50569b4656c5222028738b4703","type":"step-start"}}
+{"type":"text","timestamp":1788951924292,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"id":"prt_g001a085d80d09001yFq3ItA5p","messageID":"msg_g001a085d7eae2001zeX90Xx0h","sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","type":"text","text":"The applicability dossier is thorough. Now let me verify the candidate claims against the actual code before writing the verdict.","time":{"start":1788951923977,"end":1788951924290}}}
+{"type":"tool_use","timestamp":1788951924314,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"type":"tool","tool":"read","callID":"call_1502486cb6134575b3d4b916","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/src/rune/graph_memory.py"},"output":"<path>/mnt/workdrive/issue161-harness/src/rune/graph_memory.py</path>\n<type>file</type>\n<content>\n1: #!/usr/bin/env python3\n2: \"\"\"Graph memory tier — concept-mediated temporal knowledge graph for the agent.\n3: \n4: Built from the 2025-2026 academic frontier (briefs in\n5: `/tmp/opencode/memory-research/agentic-memory-brief.md` and\n6: `~/.firecrawl/claim-audit-2026/brief.md`). Exceeds the entity-hub approach by\n7: following the research convergence:\n8: \n9:   - CONCEPT-MEDIATED, not entity-centric (GAAMA 2603.27910): nodes are typed\n10:     (person / project / concept / tool / preference / fact), which kills the\n11:     \"mega-hub\" dilution Letta/Graphiti hit with one entity connected to\n12:     everything.\n13:   - BI-TEMPORAL edges (Graphiti 2501.13956): `valid_from/valid_until` (when\n14:     the fact is true in the world) + `learned_at` (when we learned it).\n15:   - INCREMENTAL construction (TG-RAG 2510.13590, iText2KG 2409.03284): merge\n16:     only, no full re-index; entity resolution via aliases, never blind merges.\n17:   - SUPERSEDE, never delete (Write-Time Gating 2603.15994, SSGM 2603.11768):\n18:     contradicting edges are marked superseded with the new one taking over;\n19:     history preserved for audit.\n20:   - WRITE-TIME GATING (2603.15994, D-MEM 2603.14597): routine/salience-weak\n21:     facts never touch the graph; surprises and contradictions do. The biggest\n22:     token saver in the literature.\n23:   - PROVENANCE on every edge (MemORAI 2605.01386): each edge carries the\n24:     evidence text + source, which is exactly what the claim-audit layer needs.\n25: \n26: Storage: headless SQLite at `memory/graph/graph.sqlite` — reachable by the\n27: sleep-time curator directly (no MCP dependency). Schema below.\n28: \n29: Usage:\n30:   graph_memory.py add <subj> <pred> <obj> --type subj_type --evidence \"...\"\n31:                        [--source X] [--confidence 0.0-1.0] [--strength N]\n32:   graph_memory.py add-bulk <json-file>\n33:   graph_memory.py query <entity-or-concept> [--hops N] [--latest-only]\n34:   graph_memory.py resolve <name>\n35:   graph_memory.py neighbors <entity>\n36:   graph_memory.py stats\n37:   graph_memory.py superseded-by <subj> <pred> <obj>  (manual conflict flag)\n38: \"\"\"\n39: \n40: import argparse\n41: import json\n42: import os\n43: import sqlite3\n44: import sys\n45: from collections import deque\n46: from datetime import datetime, timezone\n47: \n48: _SD = os.path.dirname(os.path.abspath(__file__))\n49: if _SD not in sys.path:\n50:     sys.path.insert(0, _SD)\n51: import memory_env\n52: \n53: MEM_DIR = memory_env.memory_dir()\n54: GRAPH_DIR = os.path.join(MEM_DIR, \"graph\")\n55: DB_PATH = os.path.join(GRAPH_DIR, \"graph.sqlite\")\n56: \n57: # Fixed predicate vocabulary — schema drift is a researched failure mode, so we\n58: # constrain the set of relationship types we accept. Unknown preds are refused\n59: # (the extractor maps free text onto this set).\n60: PREDICATES = {\n61:     \"works_on\", \"works_at\", \"teaches\", \"manages\", \"uses\", \"prefers\",\n62:     \"lives_in\", \"located_in\", \"has_role\", \"part_of\", \"leads\", \"builds\",\n63:     \"develops\", \"created\", \"interested_in\", \"knows\", \"collaborates_with\",\n64:     \"owned_by\", \"reports_to\", \"supports\", \"runs\", \"tracks\", \"related_to\",\n65:     \"based_on\", \"happens_on\", \"started_on\", \"ended_on\", \"responds_to\",\n66:     \"struggles_with\", \"likes\", \"dislikes\", \"avoided_by\", \"goal_of\",\n67: }\n68: \n69: # Node types.\n70: NODE_TYPES = {\"person\", \"project\", \"concept\", \"tool\", \"preference\",\n71:               \"organization\", \"place\", \"event\", \"skill\", \"artefact\"}\n72: \n73: # Confidence: evidence-gated (EvoKG-style f(frequency, recency, source_cred)).\n74: # We fold the curator's strength (0-5) into a 0-1 confidence.\n75: DEFAULT_CONF = 0.7\n76: \n77: \n78: def now_iso():\n79:     return datetime.now(timezone.utc).isoformat(timespec=\"seconds\")\n80: \n81: \n82: def connect():\n83:     os.makedirs(GRAPH_DIR, exist_ok=True)\n84:     db = sqlite3.connect(DB_PATH)\n85:     try:\n86:         db.row_factory = sqlite3.Row\n87:         db.executescript(\"\"\"\n88:         CREATE TABLE IF NOT EXISTS entities (\n89:             id INTEGER PRIMARY KEY AUTOINCREMENT,\n90:             name TEXT NOT NULL UNIQUE,\n91:             type TEXT NOT NULL DEFAULT 'concept',\n92:             summary TEXT DEFAULT '',\n93:             created_at TEXT NOT NULL\n94:         );\n95:         CREATE TABLE IF NOT EXISTS aliases (\n96:             entity_id INTEGER NOT NULL,\n97:             alias TEXT NOT NULL,\n98:             UNIQUE(entity_id, alias),\n99:Line truncated
+{"type":"step_finish","timestamp":1788951924343,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"id":"prt_g001a085d80e590017ifIfT2rV","reason":"tool-calls","snapshot":"3be9717276dd9704685bd1067e9066cc1265e5aa","messageID":"msg_g001a085d7eae2001zeX90Xx0h","sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","type":"step-finish","tokens":{"total":34410,"input":4729,"output":113,"reasoning":0,"cache":{"write":0,"read":29568}},"cost":0}}
+{"type":"step_start","timestamp":1788952011303,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"id":"prt_g001a085d96224001QAW50ga55","messageID":"msg_g001a085d80e96001eNZCMBkY6","sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","snapshot":"29ca5db8f22bbafb44bb6d07178e4be0954e4b80","type":"step-start"}}
+{"type":"text","timestamp":1788952014490,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"id":"prt_g001a085d96e3d002RR2TJrttN","messageID":"msg_g001a085d80e96001eNZCMBkY6","sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","type":"text","text":"Code verification confirms the claims: bi-temporal edges schema (`graph_memory.py:101-116`), supersede-on-contradiction with insert-before-mark ordering (`:183-208`), strength<3 write gating (`:126-135`), `status='active'`-only filtering with no as-of path (`:254`, `:275`), and exact→alias→LIKE-only entity resolution (`:224-237`). Let me spot-check the evidence ids referenced by the candidates against the prior stage artifacts.","time":{"start":1788952014397,"end":1788952014482}}}
+{"type":"tool_use","timestamp":1788952014526,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"type":"tool","tool":"grep","callID":"call_ffb3bf29d65542879fbaed09","state":{"status":"completed","input":{"path":"/mnt/workdrive/issue161-harness/research/issue-163","pattern":"\"(E28|E29|E30|E18|E14|E17|E22|E23)\""},"output":"Found 30 matches\n/mnt/workdrive/issue161-harness/research/issue-163/task_tree.json:\n  Line 934:             \"E28\",\n\n  Line 935:             \"E29\"\n\n  Line 1008:             \"E14\",\n\n  Line 1009:             \"E17\",\n\n  Line 1030:             \"E28\",\n\n  Line 1031:             \"E29\",\n\n  Line 1032:             \"E30\",\n\n  Line 1033:             \"E14\",\n\n  Line 1053:             \"E18\",\n\n  Line 1054:             \"E14\"\n\n  Line 1073:             \"E17\"\n\n  Line 1110:             \"E22\",\n\n  Line 1111:             \"E23\",\n\n  Line 1130:             \"E18\",\n\n  Line 1131:             \"E14\"\n\n\n/mnt/workdrive/issue161-harness/research/issue-163/applicability.json:\n  Line 24:       \"evidence\": [\"E2\", \"E3\", \"E4\", \"E6\", \"E8\", \"E27\", \"E28\", \"E29\"]\n\n  Line 66:       \"evidence\": [\"E14\", \"E17\", \"E19\"]\n\n  Line 80:       \"evidence\": [\"E28\", \"E29\", \"E30\", \"E14\", \"E27\"]\n\n  Line 94:       \"evidence\": [\"E18\", \"E14\"]\n\n  Line 108:       \"evidence\": [\"E16\", \"E17\"]\n\n  Line 136:       \"evidence\": [\"E22\", \"E23\", \"E24\"]\n\n  Line 150:       \"evidence\": [\"E18\", \"E14\"]\n\n\n/mnt/workdrive/issue161-harness/research/issue-163/outward.json:\n  Line 133:           { \"id\": \"E14\", \"claim\": \"Graphiti models a temporal context graph where every fact (entity-relation-entity edge) carries a validity window (when it became true, when superseded); changed facts are invalidated, not deleted, preserving full temporal history; bi-temporal tracking with automatic fact invalidation is listed as a core differentiator vs GraphRAG; every derived fact traces back to episodes (raw ingested data) for provenance.\", \"section\": \"What is a Context Graph, Why Graphiti, Graphiti vs GraphRAG\" },\n\n  Line 136:           { \"id\": \"E17\", \"claim\": \"Zep (the managed product) runs on a proprietary 'Context Graph Engine' requiring no third-party graph database; the OSS Graphiti framework is bring-your-own backend where retrieval performance 'depends on your setup' — i.e., the reference architecture deliberately decouples temporal semantics from the storage engine.\", \"section\": \"Graphiti and Zep, Zep vs Graphiti table\" },\n\n  Line 137:           { \"id\": \"E18\", \"claim\": \"Ingestion is LLM-dependent: entity/edge extraction and dedup require structured (JSON) output, working best with OpenAI/Anthropic/Gemini; concurrency is throttled by SEMAPHORE_LIMIT (default 10) to avoid provider 429s; retrieval is hybrid (semantic embeddings + BM25 keyword + graph traversal) with claimed sub-second latency vs GraphRAG's seconds-to-tens-of-seconds.\", \"section\": \"Structured output notes, SEMAPHORE_LIMIT, Graphiti vs GraphRAG\" },\n\n  Line 157:           { \"id\": \"E22\", \"claim\": \"Ladybug Memory's platform vision combines four components: Pgembed (transactional writes from multiple agents), DuckDB (auto-migrating aging data to columnar), Icebug (zero-copy graph analytics), and LadybugDB (graph store) — a local-first unified memory substrate for AI agents; roadmap includes SparseTensors for embedding storage and GPU acceleration.\", \"section\": \"The Bigger Picture: Ladybug Memory\" },\n\n  Line 158:           { \"id\": \"E23\", \"claim\": \"Icebug (a fork of the networkit C++ graph analytics library optimized for columnar/Arrow data) reports a PageRank benchmark on a 115M-node Wikidata graph: 8x speed advantage over networkit and 29% less memory usage — an affiliated (not independent) benchmark.\", \"section\": \"Running Graph Algorithms with Icebug\" }\n\n  Line 195:           { \"id\": \"E28\", \"claim\": \"Neo4j has NO native temporal versioning: NEP-001 (draft RFC status) proposes adding 'AS OF' query semantics; its prior-art table states 'Neo4j: No native temporal support — this proposal' (likewise Apache AGE, TypeDB, Amazon Neptune: none), while SQL:2011 defines FOR SYSTEM_TIME/FOR VALID_TIME AS OF and MariaDB/Db2 implement transaction-time/bitemporal tables.\", \"section\": \"Abstract, Section 5 Prior Art\" },\n\n  Line 196:           { \"id\": \"E29\", \"claim\": \"Current Neo4j temporal-versioning practice is valid_from/valid_to (or effective_date/end_date) property conventions with manual WHERE filters; documented problems: verbose and error-prone (NULL-as-open-ended, <= vs <, half-open intervals), does not compose (each hop needs its own temporal filter, growing linearly with path depth), the planner cannot recognize temporal predicates (no temporal index scans or period-overlap joins), and transaction time is lost unless the application records it manually; production evidence cited: 3.1M+ tempLine truncated
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+{"type":"step_start","timestamp":1788952084415,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"id":"prt_g001a085da7fbe001bMNODjQvt","messageID":"msg_g001a085d96f25001rtdPwqP2F","sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","snapshot":"87d170a6df149f7fb93e272efb9fba10fe5e96fc","type":"step-start"}}
+{"type":"text","timestamp":1788952133671,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"id":"prt_g001a085da89f70012JkM7dAHw","messageID":"msg_g001a085d96f25001rtdPwqP2F","sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","type":"text","text":"All verification checks pass:\n\n- **E28/E29/E30** (NEP-001 AS-OF semantics, prior art, Phase-1 complexity) — confirmed verbatim in `outward.json`\n- **E14/E17/E18** (Graphiti bi-temporal model, framework-layer decoupling, hybrid retrieval) — confirmed\n- **E22/E23** (Ladybug Memory lakehouse, affiliated Icebug benchmark) — confirmed\n- **Code claims** — confirmed in `src/rune/graph_memory.py`: bi-temporal edges with supersede-not-delete and gated writes exist (`:101-116`, `:126-135`, `:183-208`), while `query()` filters only `status='active'` (`:254`, `:275`) and entity resolution is exact→alias→LIKE only (`:224-237`) — i.e., the history is persisted but temporally unreadable, and the entry point caps recall. C4 is genuinely already integrated; C5/C6 are real gaps.\n\nThe standard mechanism (SQLite as-is) is *not* sufficient: two evidenced, low-cost, read-layer gaps exist that no drop-in standard mechanism closes. The stage hint's merge (C5+C6 → one query-layer proposal) is the honest compositional candidate. C4 is a no-op adoption (already integrated), and C9 stays deferred per the applicability non-goals — proposing either would manufacture novelty. Conclusion: **ADAPT**. Writing the verdict now.","time":{"start":1788952087031,"end":1788952133666}}}
+{"type":"tool_use","timestamp":1788952133676,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"type":"tool","tool":"write","callID":"call_2f32ea181e1f49ccb097fb79","state":{"status":"completed","input":{"content":"{\n  \"stage\": \"INNOVATION\",\n  \"issue\": 163,\n  \"round\": 1,\n  \"process_id\": \"research-163-r1\",\n  \"route\": \"INNOVATION_WARRANTED\",\n  \"conclusion\": \"ADAPT\",\n  \"conclusion_rationale\": \"The standard mechanism (SQLite graph tier queried via status='active' only, exact/alias/substring entry resolution) is NOT sufficient: it cannot read the bi-temporal history Rune already persists (every superseded edge is stored but unreachable through query()), and its entry point caps practical recall on paraphrase/typo. No standard drop-in closes either gap. However, the warranted innovation is strictly adapted-and-compositional, not novel-for-its-own-sake: NEP-001's AS-OF WHERE-convention (E28-E30) and Graphiti's hybrid-retrieval entry tier (E18) are adapted onto Rune's existing framework-over-SQLite layer (which already implements the semantic model 1:1, E14/E17 — C4), producing a 'temporal+lexical query layer over graph.sqlite'. Backend migration is explicitly out of scope (C1/C2/C3 rejected or deferred at APPLICABILITY; C9 tracked, not proposed).\",\n  \"candidates\": [\n    {\n      \"id\": \"INN-1\",\n      \"category\": \"ADAPT\",\n      \"proposal\": \"A unified temporal+lexical query layer over the existing graph.sqlite, inside src/rune/graph_memory.py, with zero schema or backend change. Two read-layer components that share one integration surface (query(), lines 217-284): (1) TEMPORAL — an --as-of <iso8601> parameter that replaces the status='active' filter with valid_from <= t AND (valid_until IS NULL OR t < valid_until) AND learned_at <= t, applied identically to the outgoing BFS frontier (line 254) and the incoming-edge query (line 275); BFS structure unchanged; default behavior (no flag) keeps the current active-only fast path. (2) LEXICAL — a SQLite FTS5 virtual table over entities(name, summary) and aliases(alias), inserted as a fallback tier in entity resolution (lines 224-237) with lookup order exact -> alias -> FTS5 BM25 -> substring-LIKE; index maintained on the existing entity/alias write path (resolve_entity, add_edge) in the same DB file. Full embedding tier deliberately omitted — model dependencies are disproportionate to Rune's sub-1M regime.\",\n      \"derived_from\": [\"E28\", \"E29\", \"E30\", \"E18\", \"E14\", \"E17\", \"E27\"],\n      \"source_ids\": [\"O38\", \"O41\", \"O10\", \"O1\"],\n      \"composition_of\": [\n        \"C5 (NEP-001 Phase 1 'AS OF' syntactic sugar, APPLICABLE_WITH_ADAPTATION)\",\n        \"C6 (Graphiti hybrid retrieval, reduced to its lexical BM25 tier, APPLICABLE_WITH_ADAPTATION)\",\n        \"Rune's existing bi-temporal edges schema + supersede-not-delete history (already integrated per C4)\"\n      ],\n      \"novelty\": \"compositional\",\n      \"expected_gain\": \"Two material capabilities the status quo lacks, both read-only on data already on disk: (a) time-travel queries — every contradiction ever superseded becomes queryable as-of any past timestamp, closing the exact gap NEP-001 documents (E29: hand-written temporal WHERE clauses are error-prone and do not compose; E30: Phase 1 is low complexity and delivers most of the value); (b) recall lift at the entry point — paraphrase/typo/alternate-naming terms that currently fail resolution fall through to BM25, which Graphiti credits for its sub-second retrieval (E18), without any new service or dependency (FTS5 is in-process SQLite). Combined, the graph's stored history and practical recall stop being capped by the two read-layer shortcuts.\",\n      \"risks\": \"(1) learned_at is a transaction-time proxy, not true bitemporality (E30 defers the real thing at 'Very high' complexity) — must be documented as as-of-knowledge approximation. (2) Half-open-interval and NULL-as-open-ended pitfalls are the documented failure mode of exactly this convention (E29) — they become a mandatory test checklist, not an afterthought. (3) FTS5 write amplification on add-bulk paths and index/tokenizer decisions. (4) BM25 ranking quality is evidenced only via Graphiti's claim, not measured at Rune's regime (dossier limitation #7) — hence the kill test below. (5) No Rune-regime benchmark exists (dossier limitation #2), so gains are predicted, not measured, until the kill test runs.\",\n      \"kill_test\": \"Rune-local benchmark on the real curator vocabulary and a seeded history: (a) TEMPORAL — if querying as-of realistic historical timestamps returns fact sets identical to the active-only set for every t that matters in practice (i.e., the graph accumulates negligible superseded/expired edges), the temporal component's gain is zero and it should be dropped; (b) LEXICAL — if FTS5 resolves fewer than ~30% of the paraphrase/typo terms that exact/alias/substring currently miss, oLine truncated
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+{"type":"tool_use","timestamp":1788952153503,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"type":"tool","tool":"bash","callID":"call_df7c63bb410a40a78d27bdb6","state":{"status":"completed","input":{"command":"python3 -c \"import json; d=json.load(open('research/issue-163/innovation.json')); print('valid JSON, conclusion:', d['conclusion'], '| candidates:', len(d['candidates']))\"","description":"Validate innovation.json parses correctly","workdir":"/mnt/workdrive/issue161-harness"},"output":"valid JSON, conclusion: ADAPT | candidates: 1\n","metadata":{"output":"valid JSON, conclusion: ADAPT | candidates: 1\n","exit":0,"description":"Validate innovation.json parses correctly","truncated":false},"title":"Validate innovation.json parses correctly","time":{"start":1788952153498,"end":1788952153501}},"id":"prt_g001a085db8966002S4kByYyF0","sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","messageID":"msg_g001a085db40c2001h6vwpr7Np"}}
+{"type":"step_finish","timestamp":1788952153525,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"id":"prt_g001a085db8d9e0013vnAq15yS","reason":"tool-calls","snapshot":"c79ab124dd7d49567a9c35fa4be30681f600f459","messageID":"msg_g001a085db40c2001h6vwpr7Np","sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","type":"step-finish","tokens":{"total":43445,"input":2075,"output":90,"reasoning":0,"cache":{"write":0,"read":41280}},"cost":0}}
+{"type":"step_start","timestamp":1788952165183,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"id":"prt_g001a085dbbb3d001wdwub4CvZ","messageID":"msg_g001a085db8ddd001P3mLKHopF","sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","snapshot":"07f56d6916d95306da37e4d9109430303f37b29d","type":"step-start"}}
+{"type":"text","timestamp":1788952174270,"sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","part":{"id":"prt_g001a085dbbb3e0025m9pOdODe","messageID":"msg_g001a085db8ddd001P3mLKHopF","sessionID":"ses_-ffe5f7a28a2ecffeEs822F6Ir","type":"text","text":"**Conclusion: ADAPT** — written to `research/issue-163/innovation.json` (valid JSON, verified).\n\n**One candidate: INN-1** — a unified *temporal+lexical query layer over graph.sqlite* (novelty: compositional), merging the stage-hint's C5+C6:\n\n- **Temporal half** (from C5 / NEP-001, E28–E30): `--as-of <iso8601>` replacing the `status='active'`-only filter with half-open validity-window + `learned_at <= t` predicates, defaulting to the current fast path. This unlocks the superseded-edge history Rune already persists but cannot query — verified the gap is real (`query()` at `graph_memory.py:254,275`).\n- **Lexical half** (from C6 / Graphiti E18, reduced to one tier): FTS5 BM25 fallback in entity resolution — exact → alias → FTS5 → substring — deliberately skipping the embedding tier. Gap verified (`:224-237` is LIKE-only).\n\n**What I did NOT propose, and why:**\n- **C4** (bi-temporal model) — verified as genuinely already integrated (`:101-116` schema, `:183-208` supersede ordering, `:126-135` gating); listing it as ADOPT would manufacture novelty.\n- **C9** (lakehouse) — applicability explicitly ruled \"track, don't couple\"; proposing it as BUILD would fail the evidence-derivation bar.\n\n**Kill test** (falsifiable, per-half): Rune-local benchmark — temporal half dies if as-of queries return identical fact sets to active-only at all practical `t`; lexical half dies if FTS5 resolves <~30% of currently-missed paraphrases or add-bulk latency regresses >10%. Both failing → conclusion degrades to NO_INNOVATION_WARRANTED. This operationalizes the applicability stage's own evidence constraint.\n\n**Evidence derivation verified**: E14/E17/E18/E22/E23/E28/E29/E30 confirmed verbatim in `outward.json`; no code modified, no stage advanced.","time":{"start":1788952165182,"end":1788952174268}}}
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@@ -0,0 +1,86 @@
+{"type":"step_start","timestamp":1788950482933,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c20ff1001a5JgU4KVt","messageID":"msg_g001a085c1d9b3001Jugq8c86S","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","snapshot":"c138dd4d9512a12c84ade2ed63425bb50a0b8109","type":"step-start"}}
+{"type":"text","timestamp":1788950537390,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c2c7cf001mXee3ASIq","messageID":"msg_g001a085c1d9b3001Jugq8c86S","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"text","text":"I'll start by checking for a matching skill, searching memory for prior context on this research protocol, and checking the working directory — in parallel.","time":{"start":1788950529999,"end":1788950537386}}}
+{"type":"tool_use","timestamp":1788950537394,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"skill_search","callID":"call_b1c6f5b4010a4cad8c43dec5","state":{"status":"completed","input":{"query":"Execute a structured research discovery stage (\"STAGE: OUTWARD\") for a tech spike: issue real web searches to discover and classify candidate sources (GitHub repos and external docs) about temporal graph database backends (Neo4j vs FalkorDB, Graphiti as reference, LadybugDB experimental), preserve query/fetch receipts, extract evidence claims with stable source IDs, and produce an evidence report without deep synthesis. Audience: software engineer evaluating graph backends for issue #163."},"output":"{\n  \"status\": \"matched\",\n  \"results\": [\n    {\n      \"skill_id\": \"firecrawl-search\",\n      \"name\": \"firecrawl-search\",\n      \"score\": 0.5912,\n      \"reason\": \"The skill description matches these query terms: research, real, web, discover, source, about.\"\n    },\n    {\n      \"skill_id\": \"super-research\",\n      \"name\": \"super-research\",\n      \"score\": 0.6233,\n      \"reason\": \"The skill description matches these query terms: research, real, candidate, source, repo, external, about, vs, as, reference, evidence, produce, without, deep.\"\n    },\n    {\n      \"skill_id\": \"firecrawl\",\n      \"name\": \"firecrawl\",\n      \"score\": 0.5013,\n      \"reason\": \"The skill description matches these query terms: research, real, web, external, reference, fetch.\"\n    }\n  ],\n  \"loaded_skill_id\": null\n}","metadata":{"status":"matched","loadedSkillID":null,"truncated":false},"title":"Found 3 skills","time":{"start":1788950537389,"end":1788950537391}},"id":"prt_g001a085c2e427001IuCqPp84T","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","messageID":"msg_g001a085c1d9b3001Jugq8c86S"}}
+{"type":"tool_use","timestamp":1788950537455,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"memory","callID":"call_7c01e84ea8414e7cb96c3437","state":{"status":"completed","input":{"operation":"search","query":"temporal graph backend spike OUTWARD"},"output":"Found 10 matches (BM25-ranked, best first).\nA hit here is authoritative — use it even if a parallel/sibling query returned nothing.\nIf you need the FULL body (snippets are truncated), Read the path.\nIf you need an EXACT literal (a connection string, port, token, full command line, path) and the snippet/body only paraphrases or partially shows it, the curated memory may have dropped the precise form — query the history tool for the original message, which holds it verbatim.\n\n### /home/nick/.local/share/mimocode/memory/projects/global/MEMORY-rules-gitea-2026-09-05.md\nScope: projects/global, Type: memory, Score: 12.267\n...New issues #161 (<<backend>> harness), #162 (Qdrant <<spike>>), #163 (<<graph>> <<spike>>). FREEZE deep sqlite-vec/<<graph>> optimization unless needed for correctness or benchmark baseline. Do NOT adopt KuzuDB (archived Oct 2025). Tech...\n\n### /home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5f7cabf29bffeBquaPsPsG/checkpoint.md\nScope: sessions/ses_-ffe5f7cabf29bffeBquaPsPsG, Type: checkpoint, Score: 11.831\n...<<Graph>> substrate family / structural-<<graph>> evaluation** — sources [O15]; evidence [E18, E20, E22]; classification APPLICABLE_WITH_ADAPTATION (<<graph>> tier exists in <<graph>>_memory.py as headless SQLite; O15 gives no dedicated <<graph>>-<<backend>>...\n\n### /home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5f7cb8a81bffe2w0dbs8qG/checkpoint.md\nScope: sessions/ses_-ffe5f7cb8a81bffe2w0dbs8qG, Type: checkpoint, Score: 10.615\n...Include verbatim quote when the user gave one._\n\nIssue the <<OUTWARD>> discovery searches for the subquestion \"Memory <<backend>> abstraction + comparative benchmark harness (SQLite FTS5/sqlite-vec vs Qdrant vs <<graph>> backends)\" — batch...\n\n### /home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5f98e46b46ffe7fdgz483s/checkpoint.md\nScope: sessions/ses_-ffe5f98e46b46ffe7fdgz483s, Type: checkpoint, Score: 10.254\n...2. **Storage-frontier sequence (P1, after #148–#152):** #161 (memory <<backend>> abstraction + comparative benchmark harness) → #162 (Qdrant <<spike>> incl. ColBERT late-interaction reranking) → #163 (<<temporal>> <<graph>> <<spike>>: Neo4j vs FalkorDB, LadybugDB experimental...\n\n### /home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5f7c7b6a49ffeUetJMdQPY/checkpoint.md\nScope: sessions/ses_-ffe5f7c7b6a49ffeUetJMdQPY, Type: checkpoint, Score: 9.611\n...STANDARD_SOLUTION_SUFFICIENT — build the standard harness, register Rune's own tiers (flat hybrid memory_store.py + <<temporal>>-KG <<graph>>_memory.py) as harness backends via the existing registry; Rune's architecture...\n\n### /home/nick/.local/share/mimocode/memory/projects/add96ab3-25dd-4c38-9fa3-34c01811d081/MEMORY.md\nScope: projects/add96ab3-25dd-4c38-9fa3-34c01811d081, Type: memory, Score: 9.578\n...161 <<OUTWARD>>): sqlite-vec (dense vectors) + FTS5 (BM25) in one SQLite file (`src/rune/memory_store.py`), hybrid recall accelerated by a precomputed association <<graph>> (hops=1); separate headless SQLite <<graph>> tier...\n\n### /home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5f7c9d2281ffessfv3vUH4/checkpoint.md\nScope: sessions/ses_-ffe5f7c9d2281ffessfv3vUH4, Type: checkpoint, Score: 9.301\n...No source covers the 100K-1M single-node regime where Rune's decision sits; no <<graph>>-<<backend>> benchmark was found; no asyncio-integrated harness exists.\n- memory_selector.py's raw-score ranking...\n\n### /home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5f826d4b3affeptScH2iSt/notes.md\nScope: sessions/ses_-ffe5f826d4b3affeptScH2iSt, Type: free, Score: 8.261\n...stage=<<OUTWARD>>_DISCOVERY, completed=[DEFINE, INWARD]\n\nKEY FIX: gitea_api had a double-read bug (r.read() called twice, second consumed body, json.loads got empty). Fixed.\n\nCORRECTED EXECUTION MODEL: local <<backend>>...\n\n### /home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5f7c713c17ffesxmQgDMqC/checkpoint.md\nScope: sessions/ses_-ffe5f7c713c17ffesxmQgDMqC, Type: checkpoint, Score: 7.059\n...vs live-composite delta (M2); abstention-aware headline metric (M7); <<backend>>-local PR curves only (M4); E20-E22 citation gate (M9); <<graph>> tier via read-only query() with FT6 fidelity verdict. Contains...\n\n### /home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5fd9980ab3ffed2iQMMajh/checkpoint.md\nScope: sessions/ses_-ffe5fd9980ab3ffed2iQMMajh, Type: checkpoint, Score: 6.867\n...Unicode block characters (▀▄█▌▐), background colors, proper spacing/padding, and possibly Textual CSS styling on custom widgets (not RichLog).\n- **<<Backend>> availability issue**: The \"<<Backend>> not available\" message appears when `<<BACKEND>>_AVAILABLE` is FalseLine truncated
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+{"type":"step_finish","timestamp":1788950537498,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c2e4ff001xdXRW20Bl","reason":"tool-calls","snapshot":"0f32a6894f9202071e4d3c7a99b7afec198c95be","messageID":"msg_g001a085c1d9b3001Jugq8c86S","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"step-finish","tokens":{"total":30580,"input":28505,"output":180,"reasoning":1895,"cache":{"write":0,"read":0}},"cost":0}}
+{"type":"step_start","timestamp":1788950546801,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c3096e001OgE3IzV0U","messageID":"msg_g001a085c2e53a001DM7jUjThY","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","snapshot":"159ec565415b7d789177aad439b7f0fe7b793953","type":"step-start"}}
+{"type":"text","timestamp":1788950560951,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c33084001ALQiYQce8","messageID":"msg_g001a085c2e53a001DM7jUjThY","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"text","text":"The protocol is a structured research stage for issue #163 in this repo (`issue161-harness`). Skill search suggests `super-research` as a partial fit; before deciding, let me understand the project's own research conventions and prior stage outputs.","time":{"start":1788950556804,"end":1788950560948}}}
+{"type":"tool_use","timestamp":1788950560962,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"read","callID":"call_e4321885ca324398ada687eb","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/AGENTS.md"},"output":"<path>/mnt/workdrive/issue161-harness/AGENTS.md</path>\n<type>file</type>\n<content>\n1: <!-- henxels:begin -->\n2: \n3: ## The contract (henxels)\n4: \n5: _Auto-generated from `henxels.yaml` by `henxels sync`. Do not edit by hand._\n6: \n7: Each bullet is a **henxel** (a rule). To disobey one, change `henxels.yaml` —\n8: that is the only sanctioned escape. Run `henxels explain <path>` before creating\n9: a file to see what governs that spot.\n10: \n11: Only use `git commit --no-verify` in a genuine emergency: it bypasses the hooks that run this contract, the safety mechanism meant to protect the repository. Prefer `henxels bless <action>` or editing `henxels.yaml` — both keep the deviation visible.\n12: \n13: ### Rules\n14: \n15: - Canaries live at the repo's canary slot and are registered in CI (in ./src/rune/**/canary_*.py)\n16: - No secrets in tracked files\n17: - Plans are markdown, one per build (in ./plans)\n18: - Top-level docs are markdown or yaml references (in ./docs/*)\n19: - The known giant stays visible — file-size debt is tracked, not silent (in ./src/rune/*)\n20: - The umbrella impact map is complete and truthful — every module mapped, no phantom entries (in ./config/umbrellas.json)\n21: - Umbrella canaries exist in the repo — the propagation gate cannot reference ghosts (in ./config/umbrellas.json)\n22: - The umbrella dependency graph stays a DAG — reflexive updates cannot cycle (in ./config/umbrellas.json)\n23: - The bug-fix discharge contract is a governed doc — it exists, is markdown, and changes are deliberate (in ./docs/bugfix-contract.md)\n24: - The discharge checker ships with the repo — red-first enforcement is structural (in ./scripts)\n25: - Discharge checker and its CI wiring change together\n26: - Every workflow is registered in the pipeline registry — new pipeline machinery ships with documentation (in ./.gitea/workflows/*.yml)\n27: - Every TUI surface is registered — no silent UI growth (in ./src/rune/*tui*.py)\n28: - New rune modules ship with tests or a canary — no ungoverned code surfaces (in ./src/rune/*.py)\n29: - PRDs are living documents — their generated state sections regenerate identically from governed sources\n30: - PRD staleness is a CI failure — docs rot is silent failure (in ./scripts/gen_prd_state.py)\n31: - The adversarial review procedure is binding — dispatch templates must reference it (in ./docs/adversarial-review.md)\n32: - The fixture pipeline ships with the repo — production failure capture is structural (in ./scripts)\n33: - Production failure fixtures are a governed surface — the registry and its README exist (in ./tests/fixtures/production)\n34: - Fixture payloads and the manifest travel together — tamper-evidence needs both\n35: - The fixture manifest and its generated regression tests travel together\n36: \n37: ### Behaviours\n38: \n39: - warns when a new file looks like a near-copy of a committed one\n40: \n41: ### Custom henxels & contributing\n42: \n43: **Before writing a custom check, run `henxels catalogue` and use the built-in that\n44: matches your intent — don't reinvent one.** Never name a custom check after a built-in\n45: or a setting (e.g. `warn_about_large_files` is a setting, not a check).\n46: \n47: Need a check that genuinely doesn't exist? `henxels create-new-statement <name>` scaffolds a local check\n48: (auto-loaded from `henxels_checks.py`). **If your check is reusable** — useful in\n49: other repos, not tied to this one — contribute it upstream with `henxels contribute`.\n50: We're in the agentic era: send a ready-to-merge PR instead of opening an issue.\n51: <!-- henxels:end -->\n52: \n53: ## Bug fixes (binding)\n54: \n55: Every bug found — by gates, CI, canaries, production, or humans — is fixed per\n56: `docs/bugfix-contract.md`: red test FIRST (reproduces the cause), root-cause\n57: fix, full pipeline re-entry (suite + ratchet + ruff + canaries + henxels;\n58: gates for anything beyond a mechanical minor), regression tests frozen forever,\n59: discharge recorded finding → test → commit. Symptom patches are rejected at\n60: review. To escape: edit `henxels.yaml` or this file — visibly.\n\n(End of file - total 60 lines)\n</content>","metadata":{"preview":"<!-- henxels:begin -->\n\n## The contract (henxels)\n\n_Auto-generated from `henxels.yaml` by `henxels sync`. Do not edit by hand._\n\nEach bullet is a **henxel** (a rule). To disobey one, change `henxels.yaml` —\nthat is the only sanctioned escape. Run `henxels explain <path>` before creating\na file to see what governs that spot.\n\nOnly use `git commit --no-verify` in a genuine emergency: it bypasses the hooks that run this contract, the safety mechaniLine truncated
+{"type":"tool_use","timestamp":1788950560964,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"read","callID":"call_04ad4731f2ed491495eb422a","state":{"status":"completed","input":{"file_path":"/home/nick/.local/share/mimocode/memory/projects/add96ab3-25dd-4c38-9fa3-34c01811d081/MEMORY.md"},"output":"<path>/home/nick/.local/share/mimocode/memory/projects/add96ab3-25dd-4c38-9fa3-34c01811d081/MEMORY.md</path>\n<type>file</type>\n<content>\n1: Topic: Rune research pipeline — headless structured research rounds (stages, stage artifacts, SQLite usage facts) against Gitea issues\n2: # Project memory\n3: _Durable project-level knowledge. Persists across all sessions in this project. Edit only content under italic instructions._\n4: \n5: ## Project context\n6: _What is this project? What's its goal? High-level identity._\n7: \n8: Rune project research pipeline (repo at `/mnt/workdrive/rune/`). Sessions in this project execute structured research rounds against Gitea issues, one stage at a time, dispatched as headless prompts carrying a process capsule (process_id, issue, round, current_stage, allowed_action_now, expected_completion_artifact).\n9: \n10: ## Rules\n11: _Hard constraints from user that every session must respect._\n12: \n13: - Stage prompts are authoritative: obey `allowed_action_now` strictly (e.g., DEFINE forbids codebase analysis and web research).\n14: - Stage artifacts end with the literal line `StageCompleted: <STAGE>` (or `StageFailed: <STAGE>` + `Reason:`). Never fabricate a stage outcome.\n15: \n16: ## Architecture decisions\n17: _Major design choices with rationale. The \"why\" matters more than the \"what\" for future sessions._\n18: \n19: (none yet)\n20: \n21: ## Discovered durable knowledge\n22: _Cross-task facts that survive across sessions. Promoted from session checkpoints' §7 when proven durable._\n23: \n24: - Rune research pipeline has 8 stages: DEFINE → INWARD → OUTWARD_DISCOVERY → OUTWARD_READING → ADVERSARIAL → INNOVATION → SYNTHESIS (+1 completion/validation stage). Dispatched headless via `.gitea/workflows/research-stage-headless.yml` (PRs #217/#218) + `run_agent_stage.py` (#222).\n25: - Research questions are filed in the Rune repo as `research/issue-<n>-research.md` (or under `/mnt/workdrive/rune/research/<topic>/` subdirectories). DEFINE-stage dispatches may reference \"the research question\" without restating it — locate the question file before classifying.\n26: - Stage-execution tree for research rounds lives at `/mnt/workdrive/research-stage/` (holds src/rune/ + research-executor commits, e.g. HEAD 83ea89c \"OUTWARD_DISCOVERY executor\"); distinct from the subject repo `/mnt/workdrive/rune/`.\n27: - OUTWARD_DISCOVERY technique that works here: plain webfetch of `https://duckduckgo.com/html/?q=<url-encoded query>` returns title+URL+snippet SERPs; batch ≥4 queries in parallel; snippet-level evidence satisfies the \"discover URLs, classify sources, don't read full sources\" stage contract.\n28: - OUTWARD_READING technique that works here: batch webfetch in parallel; GitHub repos read cleaner via `raw.githubusercontent.com/<owner>/<repo>/<branch>/README.md` (avoids page chrome); dev.to and sqliteforum.com (Substack-style) pages fetch OK but carry navigation noise around mid-page content; extracted claims go in a session spillover file (e.g. `checkpoint-outward-reading-sources.md`) with S-numbered source IDs so the ADVERSARIAL stage can reference claims.\n29: - Rune's SQLite usage (grounding for DB-related research questions): ~15 modules in src/rune/ each open fresh short-lived sqlite3 connections per call against a shared STORE_DB (mix of RW and `file:...?mode=ro` URI reads) across multiple OS processes; only task_gate.py sets `PRAGMA journal_mode=WAL` explicitly; sqlite-vec extension must be loaded per connection (issue #26 defect fix).\n30: - Newer pipeline runs use a 7-stage pipeline with a UNIFIED OUTWARD stage (discovery + reading merged, O-numbered source IDs, artifact ends `StageCompleted: OUTWARD`); the older 8-stage split (OUTWARD_DISCOVERY → OUTWARD_READING, S-numbered IDs) still applies to older rounds like issue-262. Deterministic DEFINE contracts may mark sub-stages \"skipped\" while the unified stage still requires \"≥2 unique URLs\".\n31: - Stage-state source of truth per round is on disk at `/mnt/workdrive/research-stage/research/issue-<n>/task_tree.json` (artifacts per stage, stage_history, expected_artifact like synthesis.json); run directories live alongside under `research/issue-<n>/runs/`.\n32: - Rune's memory stack (grounding for issue-161 OUTWARD): sqlite-vec (dense vectors) + FTS5 (BM25) in one SQLite file (`src/rune/memory_store.py`), hybrid recall accelerated by a precomputed association graph (hops=1); separate headless SQLite graph tier at `memory/graph/graph.sqlite` (`src/rune/graph_memory.py`); no Qdrant dependency exists — the \"vs Qdrant vs graph backends\" part of the question is comparative Line truncated
+{"type":"tool_use","timestamp":1788950560969,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"bash","callID":"call_cecdb45bf70747e7b528e38e","state":{"status":"completed","input":{"command":"ls research/ && ls prompts/ 2>/dev/null; ls research/ | head -40","description":"List research and prompts directories"},"output":"batch-processing\nbuild-mode\ncontract-testing\nfull-audit\ninterstitial-tools\nissue-161\nissue-163\nissue-245-research.md\nissue-256\nissue-260\nissue-261\nissue-262\nissue-263\nllm-craft-api\nllm-craft-deep\nquality-tools\nresearch-methodology\nrune-efficiency\nsafety-override\ntextual-craft\ntool-calling\nuncensored-models\nv1\nworkflow-audit\nresearch-round.md\nresearch-stages\nbatch-processing\nbuild-mode\ncontract-testing\nfull-audit\ninterstitial-tools\nissue-161\nissue-163\nissue-245-research.md\nissue-256\nissue-260\nissue-261\nissue-262\nissue-263\nllm-craft-api\nllm-craft-deep\nquality-tools\nresearch-methodology\nrune-efficiency\nsafety-override\ntextual-craft\ntool-calling\nuncensored-models\nv1\nworkflow-audit\n","metadata":{"output":"batch-processing\nbuild-mode\ncontract-testing\nfull-audit\ninterstitial-tools\nissue-161\nissue-163\nissue-245-research.md\nissue-256\nissue-260\nissue-261\nissue-262\nissue-263\nllm-craft-api\nllm-craft-deep\nquality-tools\nresearch-methodology\nrune-efficiency\nsafety-override\ntextual-craft\ntool-calling\nuncensored-models\nv1\nworkflow-audit\nresearch-round.md\nresearch-stages\nbatch-processing\nbuild-mode\ncontract-testing\nfull-audit\ninterstitial-tools\nissue-161\nissue-163\nissue-245-research.md\nissue-256\nissue-260\nissue-261\nissue-262\nissue-263\nllm-craft-api\nllm-craft-deep\nquality-tools\nresearch-methodology\nrune-efficiency\nsafety-override\ntextual-craft\ntool-calling\nuncensored-models\nv1\nworkflow-audit\n","exit":0,"description":"List research and prompts directories","truncated":false},"title":"List research and prompts directories","time":{"start":1788950560966,"end":1788950560968}},"id":"prt_g001a085c340460013PFW7AN41","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","messageID":"msg_g001a085c2e53a001DM7jUjThY"}}
+{"type":"step_finish","timestamp":1788950560992,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c340c900131KeblPi3","reason":"tool-calls","snapshot":"5893b28737586024b793abce57496e6705d11ed8","messageID":"msg_g001a085c2e53a001DM7jUjThY","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"step-finish","tokens":{"total":31785,"input":2847,"output":160,"reasoning":298,"cache":{"write":0,"read":28480}},"cost":0}}
+{"type":"step_start","timestamp":1788950567309,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c3598b001ka6t2Nnj3","messageID":"msg_g001a085c340fc001uGiSW8VxU","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","snapshot":"b48aec4caed0fec9fa9a402d1d92d388d306e030","type":"step-start"}}
+{"type":"text","timestamp":1788950589361,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c39f5f0016jjmjeFFz","messageID":"msg_g001a085c340fc001uGiSW8VxU","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"text","text":"The project memory gives me the established protocol: this is the Rune research pipeline's unified OUTWARD stage (discovery + reading, O-numbered source IDs, artifact ending `StageCompleted: OUTWARD`), with stage state at `/mnt/workdrive/research-stage/research/issue-163/`. The stage dispatch is authoritative, so I'll follow it and the proven techniques from memory rather than loading a generic research skill. Let me inspect the stage state and the research question file.","time":{"start":1788950585183,"end":1788950589359}}}
+{"type":"tool_use","timestamp":1788950589371,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"bash","callID":"call_66c84886fb9645ccab722d31","state":{"status":"completed","input":{"command":"ls /mnt/workdrive/issue161-harness/research/issue-163/ 2>/dev/null; echo ---; ls /mnt/workdrive/rune/research/ 2>/dev/null | grep -i 163; echo ---; cat /mnt/workdrive/rune/research/issue-163-research.md 2>/dev/null | head -60","description":"Look for issue-163 research question file"},"output":"stage_OUTWARD.events.jsonl\nstage_OUTWARD.mimo.err.log\ntask_tree.json\n---\n---\n","metadata":{"output":"stage_OUTWARD.events.jsonl\nstage_OUTWARD.mimo.err.log\ntask_tree.json\n---\n---\n","exit":0,"description":"Look for issue-163 research question file","truncated":false},"title":"Look for issue-163 research question file","time":{"start":1788950589368,"end":1788950589370}},"id":"prt_g001a085c3a9cc001VHZVVFwVQ","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","messageID":"msg_g001a085c340fc001uGiSW8VxU"}}
+{"type":"tool_use","timestamp":1788950589376,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"bash","callID":"call_b76c3aef91f04c1eb0b2f42d","state":{"status":"completed","input":{"command":"ls /mnt/workdrive/research-stage/research/issue-163/ 2>/dev/null; echo ---; cat /mnt/workdrive/research-stage/research/issue-163/task_tree.json 2>/dev/null | head -100","description":"Inspect issue-163 stage state"},"output":"---\n","metadata":{"output":"---\n","exit":0,"description":"Inspect issue-163 stage state","truncated":false},"title":"Inspect issue-163 stage state","time":{"start":1788950589372,"end":1788950589374}},"id":"prt_g001a085c3a5dc0013BHmSli1B","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","messageID":"msg_g001a085c340fc001uGiSW8VxU"}}
+{"type":"step_finish","timestamp":1788950589400,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c3afbf0018zAsjwLgY","reason":"tool-calls","snapshot":"fd7e0f5cc49bdbf7e009ce9063b562b337b3131a","messageID":"msg_g001a085c340fc001uGiSW8VxU","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"step-finish","tokens":{"total":37832,"input":8341,"output":270,"reasoning":741,"cache":{"write":0,"read":28480}},"cost":0}}
+{"type":"step_start","timestamp":1788950601919,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c3e0bc001FqX7Qb6SE","messageID":"msg_g001a085c3affa001tokfuVycg","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","snapshot":"2d29dfea73e0348bd87eead1fdaf713eaadc8a2c","type":"step-start"}}
+{"type":"text","timestamp":1788950613838,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c4086c001cGdjFDdp5","messageID":"msg_g001a085c3affa001tokfuVycg","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"text","text":"The stage state for issue-163 lives in this repo's `research/issue-163/`. Let me read the task tree to find the research question and current stage state.","time":{"start":1788950612076,"end":1788950613835}}}
+{"type":"tool_use","timestamp":1788950613864,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"bash","callID":"call_4b5521c9a4ca454caa492b08","state":{"status":"completed","input":{"command":"python3 -c \"\nimport json\nt=json.load(open('/mnt/workdrive/issue161-harness/research/issue-163/task_tree.json'))\nprint(json.dumps(t, indent=1)[:4000])\n\"","description":"Read issue-163 task tree JSON"},"output":"{\n \"issue\": 163,\n \"round\": 1,\n \"current_stage\": \"OUTWARD\",\n \"completed_stages\": [\n  \"ISSUE\",\n  \"INWARD\"\n ],\n \"artifacts\": {\n  \"ISSUE\": {\n   \"contract\": {\n    \"issue\": 163,\n    \"title\": \"Temporal graph backend spike: Neo4j vs FalkorDB (LadybugDB experimental; Graphiti as reference)\",\n    \"question_type\": \"mixed\",\n    \"sub_questions\": [\n     \"Address: Temporal graph backend spike: Neo4j vs FalkorDB (LadybugDB experimental; Graphiti as reference)\"\n    ],\n    \"required_stages\": [\n     \"ISSUE\",\n     \"INWARD\",\n     \"OUTWARD\",\n     \"ADVERSARIAL\",\n     \"INNOVATION\",\n     \"SYNTHESIS\",\n     \"QUALIFY\"\n    ],\n    \"skipped_stages\": {\n     \"APPLICABILITY\": \"No OUTWARD research to ground against Rune.\"\n    },\n    \"evidence_classes\": [\n     \"repo\",\n     \"external\"\n    ],\n    \"sufficient_evidence\": \"\\u22652 code-path citations for INWARD; \\u22652 unique URLs for OUTWARD (if required)\",\n    \"expected_artifact\": \"synthesis.json\",\n    \"ambiguous\": false,\n    \"needs_mimo\": false,\n    \"source\": \"deterministic\"\n   },\n   \"deterministic\": true\n  },\n  \"INWARD\": {\n   \"context\": {\n    \"keywords\": [\n     \"temporal\",\n     \"graph\",\n     \"backend\",\n     \"spike\",\n     \"neo\",\n     \"falkordb\",\n     \"ladybugdb\",\n     \"experimental\",\n     \"graphiti\",\n     \"reference\",\n     \"plain\",\n     \"summary\",\n     \"architecture_frontier_handoff\",\n     \"compare\",\n     \"graph\",\n     \"backends\",\n     \"rune\",\n     \"structural\",\n     \"projection\",\n     \"episodes\"\n    ],\n    \"umbrella_matches\": [\n     {\n      \"umbrella\": \"memory\",\n      \"module\": \"graph_memory\",\n      \"keyword\": \"graph\"\n     },\n     {\n      \"umbrella\": \"memory\",\n      \"module\": \"graph_shard_bridge\",\n      \"keyword\": \"graph\"\n     },\n     {\n      \"umbrella\": \"orchestration\",\n      \"module\": \"rune_operator\",\n      \"keyword\": \"rune\"\n     },\n     {\n      \"umbrella\": \"orchestration\",\n      \"module\": \"rune_tui\",\n      \"keyword\": \"rune\"\n     },\n     {\n      \"umbrella\": \"orchestration\",\n      \"module\": \"rune_graphic\",\n      \"keyword\": \"graph\"\n     },\n     {\n      \"umbrella\": \"orchestration\",\n      \"module\": \"rune_spinner\",\n      \"keyword\": \"rune\"\n     },\n     {\n      \"umbrella\": \"orchestration\",\n      \"module\": \"rune_profiler\",\n      \"keyword\": \"rune\"\n     }\n    ],\n    \"candidate_files\": [\n     \"src/rune/curator.py\",\n     \"src/rune/rune_tui.py\",\n     \"src/rune/graph_memory.py\",\n     \"src/rune/sleep_time.py\",\n     \"src/rune/elastic_cognition.py\",\n     \"src/rune/rune_operator.py\",\n     \"src/rune/rune_profiler.py\",\n     \"src/rune/warm_router.py\",\n     \"src/rune/abstraction.py\",\n     \"src/rune/canary_native.py\",\n     \"src/rune/canary_p0_04.py\",\n     \"src/rune/canary_p1_07.py\",\n     \"src/rune/complexity_scorer.py\",\n     \"src/rune/identity_anchors.py\",\n     \"src/rune/memory_consolidation.py\"\n    ],\n    \"candidate_tests\": [\n     \"tests/test_retrieval_benchmark.py\",\n     \"tests/test_orchestration_memory_synthesis.py\",\n     \"tests/test_p1_03_memory_selection.py\",\n     \"tests/test_p1_06_model_routing.py\",\n     \"tests/test_p1_07_runtime_objects.py\",\n     \"tests/test_version_convergence.py\",\n     \"tests/test_adversarial_executor.py\",\n     \"tests/test_ci_lock_contract.py\",\n     \"tests/test_context_broker.py\",\n     \"tests/test_failure_auto_filer.py\"\n    ],\n    \"define_contract\": {\n     \"issue\": 163,\n     \"title\": \"Temporal graph backend spike: Neo4j vs FalkorDB (LadybugDB experimental; Graphiti as reference)\",\n     \"question_type\": \"mixed\",\n     \"sub_questions\": [\n      \"Address: Temporal graph backend spike: Neo4j vs FalkorDB (LadybugDB experimental; Graphiti as reference)\"\n     ],\n     \"required_stages\": [\n      \"ISSUE\",\n      \"INWARD\",\n      \"OUTWARD\",\n      \"ADVERSARIAL\",\n      \"INNOVATION\",\n      \"SYNTHESIS\",\n      \"QUALIFY\"\n     ],\n     \"skipped_stages\": {\n      \"APPLICABILITY\": \"No OUTWARD research to ground against Rune.\"\n     },\n     \"evidence_classes\": [\n      \"repo\",\n      \"external\"\n     ],\n     \"sufficient_evidence\": \"\\u22652 code-path citations for INWARD; \\u22652 unique URLs for OUTWARD (if required)\",\n     \"expected_arti\n","metadata":{"output":"{\n \"issue\": 163,\n \"round\": 1,\n \"current_stage\": \"OUTWARDLine truncated
+{"type":"step_finish","timestamp":1788950613884,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c40f680010TuDzZ5O8","reason":"tool-calls","snapshot":"ee6dee00f2628f10ae6321bc92a72adc25e355e0","messageID":"msg_g001a085c3affa001tokfuVycg","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"step-finish","tokens":{"total":35446,"input":3626,"output":104,"reasoning":420,"cache":{"write":0,"read":31296}},"cost":0}}
+{"type":"step_start","timestamp":1788950624316,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c43838001JPQeOdanS","messageID":"msg_g001a085c40f98001po7c6AOS6","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","snapshot":"e3a00ea9f0993ad2dd0aeec36c74c39932e604fe","type":"step-start"}}
+{"type":"tool_use","timestamp":1788950624384,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"bash","callID":"call_bd76fc3c2f2c4aa89f7b7d86","state":{"status":"completed","input":{"command":"python3 -c \"\nimport json\nt=json.load(open('/mnt/workdrive/issue161-harness/research/issue-163/task_tree.json'))\nprint('current_stage:', t['current_stage'])\nprint('completed:', t['completed_stages'])\nprint('artifact keys:', list(t.get('artifacts',{}).keys()))\nprint('stage_history:')\nfor h in t.get('stage_history', []):\n    print('  ', json.dumps(h)[:300])\nprint('expected_artifact:', t.get('expected_artifact'))\nprint('keys:', list(t.keys()))\n\"","description":"Show stage history and expected artifact"},"output":"current_stage: OUTWARD\ncompleted: ['ISSUE', 'INWARD']\nartifact keys: ['ISSUE', 'INWARD']\nstage_history:\n   {\"stage\": \"ISSUE\", \"round\": 1, \"completed_at\": \"auto\", \"artifact_keys\": [\"contract\", \"deterministic\"]}\n   {\"stage\": \"INWARD\", \"round\": 1, \"completed_at\": \"auto\", \"artifact_keys\": [\"context\", \"deterministic\", \"claims\"]}\nexpected_artifact: None\nkeys: ['issue', 'round', 'current_stage', 'completed_stages', 'artifacts', 'blocking_unknowns', 'status', 'stage_history']\n","metadata":{"output":"current_stage: OUTWARD\ncompleted: ['ISSUE', 'INWARD']\nartifact keys: ['ISSUE', 'INWARD']\nstage_history:\n   {\"stage\": \"ISSUE\", \"round\": 1, \"completed_at\": \"auto\", \"artifact_keys\": [\"contract\", \"deterministic\"]}\n   {\"stage\": \"INWARD\", \"round\": 1, \"completed_at\": \"auto\", \"artifact_keys\": [\"context\", \"deterministic\", \"claims\"]}\nexpected_artifact: None\nkeys: ['issue', 'round', 'current_stage', 'completed_stages', 'artifacts', 'blocking_unknowns', 'status', 'stage_history']\n","exit":0,"description":"Show stage history and expected artifact","truncated":false},"title":"Show stage history and expected artifact","time":{"start":1788950624379,"end":1788950624382}},"id":"prt_g001a085c4383a001Gv9FoNmP0","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","messageID":"msg_g001a085c40f98001po7c6AOS6"}}
+{"type":"step_finish","timestamp":1788950624406,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c4387f002aaJuh4ysD","reason":"tool-calls","snapshot":"c43d18dc763132198adb16de7a9217700e39e95e","messageID":"msg_g001a085c40f98001po7c6AOS6","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"step-finish","tokens":{"total":36311,"input":1294,"output":137,"reasoning":0,"cache":{"write":0,"read":34880}},"cost":0}}
+{"type":"step_start","timestamp":1788950629600,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c44cde0012MwV8ZgNF","messageID":"msg_g001a085c438ca001SLF2Qll47","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","snapshot":"25bc6b15953b73569fab88600fd1f0a47cd7ba10","type":"step-start"}}
+{"type":"text","timestamp":1788950638490,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c46542002aQgZT3Iy4","messageID":"msg_g001a085c438ca001SLF2Qll47","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"text","text":"Issue-163 round 1, OUTWARD stage open, no artifact yet. Let me check the sibling round issue-162 (Qdrant spike, same pipeline) for the artifact format, plus the current session's stage events log and the INWARD artifact for grounding.","time":{"start":1788950635843,"end":1788950638487}}}
+{"type":"tool_use","timestamp":1788950638517,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"bash","callID":"call_b272b620893b473992e0ad60","state":{"status":"completed","input":{"command":"python3 -c \"\nimport json\nt=json.load(open('/mnt/workdrive/issue161-harness/research/issue-163/task_tree.json'))\nprint('status:', json.dumps(t.get('status'))[:500])\nprint('blocking_unknowns:', json.dumps(t.get('blocking_unknowns'))[:500])\n\"; echo ---; ls /mnt/workdrive/issue161-harness/research/issue-162/ 2>/dev/null; echo ---; tail -5 /mnt/workdrive/issue161-harness/research/issue-163/stage_OUTWARD.events.jsonl 2>/dev/null","description":"Check status, issue-162 artifacts, events log"},"output":"status: \"ACTIVE\"\nblocking_unknowns: []\n---\n---\n{\"type\":\"step_start\",\"timestamp\":1788950624316,\"sessionID\":\"ses_-ffe5f7a3e2805ffeYaOOBiQE1\",\"part\":{\"id\":\"prt_g001a085c43838001JPQeOdanS\",\"messageID\":\"msg_g001a085c40f98001po7c6AOS6\",\"sessionID\":\"ses_-ffe5f7a3e2805ffeYaOOBiQE1\",\"snapshot\":\"e3a00ea9f0993ad2dd0aeec36c74c39932e604fe\",\"type\":\"step-start\"}}\n{\"type\":\"tool_use\",\"timestamp\":1788950624384,\"sessionID\":\"ses_-ffe5f7a3e2805ffeYaOOBiQE1\",\"part\":{\"type\":\"tool\",\"tool\":\"bash\",\"callID\":\"call_bd76fc3c2f2c4aa89f7b7d86\",\"state\":{\"status\":\"completed\",\"input\":{\"command\":\"python3 -c \\\"\\nimport json\\nt=json.load(open('/mnt/workdrive/issue161-harness/research/issue-163/task_tree.json'))\\nprint('current_stage:', t['current_stage'])\\nprint('completed:', t['completed_stages'])\\nprint('artifact keys:', list(t.get('artifacts',{}).keys()))\\nprint('stage_history:')\\nfor h in t.get('stage_history', []):\\n    print('  ', json.dumps(h)[:300])\\nprint('expected_artifact:', t.get('expected_artifact'))\\nprint('keys:', list(t.keys()))\\n\\\"\",\"description\":\"Show stage history and expected artifact\"},\"output\":\"current_stage: OUTWARD\\ncompleted: ['ISSUE', 'INWARD']\\nartifact keys: ['ISSUE', 'INWARD']\\nstage_history:\\n   {\\\"stage\\\": \\\"ISSUE\\\", \\\"round\\\": 1, \\\"completed_at\\\": \\\"auto\\\", \\\"artifact_keys\\\": [\\\"contract\\\", \\\"deterministic\\\"]}\\n   {\\\"stage\\\": \\\"INWARD\\\", \\\"round\\\": 1, \\\"completed_at\\\": \\\"auto\\\", \\\"artifact_keys\\\": [\\\"context\\\", \\\"deterministic\\\", \\\"claims\\\"]}\\nexpected_artifact: None\\nkeys: ['issue', 'round', 'current_stage', 'completed_stages', 'artifacts', 'blocking_unknowns', 'status', 'stage_history']\\n\",\"metadata\":{\"output\":\"current_stage: OUTWARD\\ncompleted: ['ISSUE', 'INWARD']\\nartifact keys: ['ISSUE', 'INWARD']\\nstage_history:\\n   {\\\"stage\\\": \\\"ISSUE\\\", \\\"round\\\": 1, \\\"completed_at\\\": \\\"auto\\\", \\\"artifact_keys\\\": [\\\"contract\\\", \\\"deterministic\\\"]}\\n   {\\\"stage\\\": \\\"INWARD\\\", \\\"round\\\": 1, \\\"completed_at\\\": \\\"auto\\\", \\\"artifact_keys\\\": [\\\"context\\\", \\\"deterministic\\\", \\\"claims\\\"]}\\nexpected_artifact: None\\nkeys: ['issue', 'round', 'current_stage', 'completed_stages', 'artifacts', 'blocking_unknowns', 'status', 'stage_history']\\n\",\"exit\":0,\"description\":\"Show stage history and expected artifact\",\"truncated\":false},\"title\":\"Show stage history and expected artifact\",\"time\":{\"start\":1788950624379,\"end\":1788950624382}},\"id\":\"prt_g001a085c4383a001Gv9FoNmP0\",\"sessionID\":\"ses_-ffe5f7a3e2805ffeYaOOBiQE1\",\"messageID\":\"msg_g001a085c40f98001po7c6AOS6\"}}\n{\"type\":\"step_finish\",\"timestamp\":1788950624406,\"sessionID\":\"ses_-ffe5f7a3e2805ffeYaOOBiQE1\",\"part\":{\"id\":\"prt_g001a085c4387f002aaJuh4ysD\",\"reason\":\"tool-calls\",\"snapshot\":\"c43d18dc763132198adb16de7a9217700e39e95e\",\"messageID\":\"msg_g001a085c40f98001po7c6AOS6\",\"sessionID\":\"ses_-ffe5f7a3e2805ffeYaOOBiQE1\",\"type\":\"step-finish\",\"tokens\":{\"total\":36311,\"input\":1294,\"output\":137,\"reasoning\":0,\"cache\":{\"write\":0,\"read\":34880}},\"cost\":0}}\n{\"type\":\"step_start\",\"timestamp\":1788950629600,\"sessionID\":\"ses_-ffe5f7a3e2805ffeYaOOBiQE1\",\"part\":{\"id\":\"prt_g001a085c44cde0012MwV8ZgNF\",\"messageID\":\"msg_g001a085c438ca001SLF2Qll47\",\"sessionID\":\"ses_-ffe5f7a3e2805ffeYaOOBiQE1\",\"snapshot\":\"25bc6b15953b73569fab88600fd1f0a47cd7ba10\",\"type\":\"step-start\"}}\n{\"type\":\"text\",\"timestamp\":1788950638490,\"sessionID\":\"ses_-ffe5f7a3e2805ffeYaOOBiQE1\",\"part\":{\"id\":\"prt_g001a085c46542002aQgZT3Iy4\",\"messageID\":\"msg_g001a085c438ca001SLF2Qll47\",\"sessionID\":\"ses_-ffe5f7a3e2805ffeYaOOBiQE1\",\"type\":\"text\",\"text\":\"Issue-163 round 1, OUTWARD stage open, no artifact yet. Let me check the sibling round issue-162 (Qdrant spike, same pipeline) for the artifact format, plus the current session's stage events log and the INWARD artifact for grounding.\",\"time\":{\"start\":1788950635843,\"end\":1788950638487}}}\n","metadata":{"output":"status: \"ACTIVE\"\nblocking_unknowns: []\n---\n---\n{\"type\":\"step_start\",\"timestamp\":17Line truncated
+{"type":"step_finish","timestamp":1788950638539,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c46fb4001Pq4CD5Dwm","reason":"tool-calls","snapshot":"0ce38fc9b124b0b8fc21d7bcad10f9ed8ca33c25","messageID":"msg_g001a085c438ca001SLF2Qll47","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"step-finish","tokens":{"total":36786,"input":293,"output":203,"reasoning":130,"cache":{"write":0,"read":36160}},"cost":0}}
+{"type":"step_start","timestamp":1788950644740,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c48802001wWeZU2kKK","messageID":"msg_g001a085c46feb001djxNg6kw3","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","snapshot":"aaa46a95d9d355c1353cdc97717d4771c99729a0","type":"step-start"}}
+{"type":"text","timestamp":1788950651491,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c49a78001oCp2jdyy2","messageID":"msg_g001a085c46feb001djxNg6kw3","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"text","text":"The events log is just this session's live trace. Let me find a prior OUTWARD artifact from a sibling round to match format, and look at the INWARD claims for grounding.","time":{"start":1788950649464,"end":1788950651488}}}
+{"type":"tool_use","timestamp":1788950651503,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"bash","callID":"call_6783d55e47ac4363a79ecdbc","state":{"status":"completed","input":{"command":"ls /mnt/workdrive/issue161-harness/research/; echo ---; find /mnt/workdrive/issue161-harness/research -maxdepth 2 -name \"*outward*\" 2>/dev/null | head; echo ---; ls /mnt/workdrive/issue161-harness/research/issue-161 2>/dev/null","description":"Find prior outward artifacts in research dir"},"output":"batch-processing\nbuild-mode\ncontract-testing\nfull-audit\ninterstitial-tools\nissue-161\nissue-163\nissue-245-research.md\nissue-256\nissue-260\nissue-261\nissue-262\nissue-263\nllm-craft-api\nllm-craft-deep\nquality-tools\nresearch-methodology\nrune-efficiency\nsafety-override\ntextual-craft\ntool-calling\nuncensored-models\nv1\nworkflow-audit\n---\n/mnt/workdrive/issue161-harness/research/issue-262/outward_reading.json\n/mnt/workdrive/issue161-harness/research/issue-161/outward.json\n---\nadversarial.json\napplicability.json\noutward.json\nqualify.json\nsynthesis.json\ntask_tree.json\n","metadata":{"output":"batch-processing\nbuild-mode\ncontract-testing\nfull-audit\ninterstitial-tools\nissue-161\nissue-163\nissue-245-research.md\nissue-256\nissue-260\nissue-261\nissue-262\nissue-263\nllm-craft-api\nllm-craft-deep\nquality-tools\nresearch-methodology\nrune-efficiency\nsafety-override\ntextual-craft\ntool-calling\nuncensored-models\nv1\nworkflow-audit\n---\n/mnt/workdrive/issue161-harness/research/issue-262/outward_reading.json\n/mnt/workdrive/issue161-harness/research/issue-161/outward.json\n---\nadversarial.json\napplicability.json\noutward.json\nqualify.json\nsynthesis.json\ntask_tree.json\n","exit":0,"description":"Find prior outward artifacts in research dir","truncated":false},"title":"Find prior outward artifacts in research dir","time":{"start":1788950651499,"end":1788950651501}},"id":"prt_g001a085c4a2300010MYFDhAqD","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","messageID":"msg_g001a085c46feb001djxNg6kw3"}}
+{"type":"step_finish","timestamp":1788950651524,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c4a26f001s2r4W6u1J","reason":"tool-calls","snapshot":"bcd02fb0cf0c5511e106d0a8b9189a209f5ff083","messageID":"msg_g001a085c46feb001djxNg6kw3","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"step-finish","tokens":{"total":38266,"input":1562,"output":131,"reasoning":157,"cache":{"write":0,"read":36416}},"cost":0}}
+{"type":"step_start","timestamp":1788950659018,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c4bfc7001QNAFiFkVv","messageID":"msg_g001a085c4a2a5001s7rV6nuqZ","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","snapshot":"5e53bcf046a208b05de188f86e46d8ea698422db","type":"step-start"}}
+{"type":"tool_use","timestamp":1788950660723,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"bash","callID":"call_b6dcc6478d1b42a3aeed47d1","state":{"status":"completed","input":{"command":"python3 -c \"\nimport json\nd=json.load(open('/mnt/workdrive/issue161-harness/research/issue-161/outward.json'))\nprint(json.dumps(d, indent=1)[:3500])\n\"","description":"Inspect prior outward.json format"},"output":"{\n \"stage\": \"OUTWARD\",\n \"process_id\": \"research-161-r1\",\n \"issue\": 161,\n \"round\": 1,\n \"subquestion\": \"Memory backend abstraction + comparative benchmark harness (SQLite FTS5/sqlite-vec vs Qdrant vs graph backends)\",\n \"discovery\": {\n  \"queries\": [\n   {\n    \"id\": \"Q1\",\n    \"tool\": \"webfetch (DuckDuckGo HTML)\",\n    \"query\": \"sqlite-vec vs qdrant benchmark vector search comparison\",\n    \"receipt\": \"fetched 2026 session turn; 10 results returned inline\"\n   },\n   {\n    \"id\": \"Q2\",\n    \"tool\": \"webfetch (DuckDuckGo HTML)\",\n    \"query\": \"agent memory backend benchmark harness embeddings retrieval evaluation\",\n    \"receipt\": \"fetched 2026 session turn; 10 results returned inline\"\n   },\n   {\n    \"id\": \"Q3\",\n    \"tool\": \"webfetch (DuckDuckGo HTML)\",\n    \"query\": \"sqlite-vec github asg017 documentation features limitations\",\n    \"receipt\": \"BLOCKED: DuckDuckGo bot challenge returned instead of results; no results obtained\"\n   },\n   {\n    \"id\": \"Q4\",\n    \"tool\": \"webfetch (DuckDuckGo HTML)\",\n    \"query\": \"harness the memory holistic evaluation memory substrates arxiv LongMemEval LoCoMo\",\n    \"receipt\": \"BLOCKED: DuckDuckGo bot challenge returned instead of results; no results obtained\"\n   }\n  ],\n  \"sources_discovered\": [\n   {\n    \"id\": \"O1\",\n    \"url\": \"https://www.dreaming.press/compare/sqlite-vec-vs-qdrant\",\n    \"class\": \"comparison site\",\n    \"note\": \"not selected for reading \\u2014 auto-generated comparison page, unclear methodology\"\n   },\n   {\n    \"id\": \"O2\",\n    \"url\": \"https://qdrant.tech/benchmarks/\",\n    \"class\": \"vendor official (Qdrant benchmark portal)\"\n   },\n   {\n    \"id\": \"O3\",\n    \"url\": \"https://www.libhunt.com/compare-sqlite-vss-vs-qdrant\",\n    \"class\": \"aggregator\",\n    \"note\": \"not selected \\u2014 stale sqlite-vss framing, low value\"\n   },\n   {\n    \"id\": \"O4\",\n    \"url\": \"https://github.com/mycman/sqlite-vec-benchmark\",\n    \"class\": \"GitHub (independent benchmark harness)\"\n   },\n   {\n    \"id\": \"O5\",\n    \"url\": \"https://www.firecrawl.dev/blog/best-vector-databases\",\n    \"class\": \"vendor blog\",\n    \"note\": \"not selected \\u2014 survey listicle, no reproducible methodology\"\n   },\n   {\n    \"id\": \"O6\",\n    \"url\": \"https://encore.dev/articles/best-vector-databases\",\n    \"class\": \"vendor blog\",\n    \"note\": \"not selected\"\n   },\n   {\n    \"id\": \"O7\",\n    \"url\": \"https://www.reddit.com/r/vectordatabase/comments/170j6zd/\",\n    \"class\": \"forum\",\n    \"note\": \"not selected\"\n   },\n   {\n    \"id\": \"O8\",\n    \"url\": \"https://github.com/scriptstar/vector-db-benchmark\",\n    \"class\": \"GitHub (benchmark suite: Qdrant/Milvus/Weaviate/Chroma/Pinecone/SQLite)\",\n    \"note\": \"candidate; not read \\u2014 O4 covers the SQLite-vs-managed comparison more directly\"\n   },\n   {\n    \"id\": \"O9\",\n    \"url\": \"https://www.inductivee.com/blog/vector-database-performance-benchmarks-2025\",\n    \"class\": \"blog (agency benchmarks)\",\n    \"note\": \"not selected\"\n   },\n   {\n    \"id\": \"O10\",\n    \"url\": \"https://github.com/mem0ai/memory-benchmarks\",\n    \"class\": \"GitHub (Mem0 evaluation suite)\",\n    \"note\": \"candidate; not read \\u2014 Mem0-specific, O12 provides a more neutral harness\"\n   },\n   {\n    \"id\": \"O11\",\n    \"url\": \"https://agentmemorybenchmark.ai/\",\n    \"class\": \"leaderboard site\",\n    \"note\": \"not selected\"\n   },\n   {\n    \"id\": \"O12\",\n    \"url\": \"https://github.com/Evanyuan-builder/memory-core-eval\",\n    \"class\": \"GitHub (reproducible memory-eval harness, MemoryAdapter interface)\"\n   },\n   {\n    \"id\": \"O13\",\n    \"url\": \"https://kranthib.github.io/tech-pulse/frameworks-n-pla\n","metadata":{"output":"{\n \"stage\": \"OUTWARD\",\n \"process_id\": \"research-161-r1\",\n \"issue\": 161,\n \"round\": 1,\n \"subquestion\": \"Memory backend abstraction + comparative benchmark harness (SQLite FTS5/sqlite-vec vs Qdrant vs graph backends)\",\n \"discovery\": {\n  \"queries\": [\n   {\n    \"id\": \"Q1\",\n    \"tool\": \"webfetch (DuckDuckGo HTML)\",\n    \"query\": \"sqlite-vec vs qdrant benchmark vector search comparison\",\n    \"receipt\": \"fetched 2026 session turn; 10 results returned inline\"\n   },\n   {\n    \"id\": \"Q2\",\n    \"tool\": \"webfetch (DuckDuckGo HTML)\",\n    \"query\": \"agent memory backend benchmark harness embeddings retriLine truncated
+{"type":"step_finish","timestamp":1788950660744,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c4c673001VoAqv3UXu","reason":"tool-calls","snapshot":"4fce4aca3a1f94de1c8755d8cd013e3ebab48c43","messageID":"msg_g001a085c4a2a5001s7rV6nuqZ","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"step-finish","tokens":{"total":41999,"input":5135,"output":64,"reasoning":0,"cache":{"write":0,"read":36800}},"cost":0}}
+{"type":"step_start","timestamp":1788950671012,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c4eea2001BuACRFwWp","messageID":"msg_g001a085c4c6a5001BtxWpNzj8","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","snapshot":"bba3e02de5bcdc1dddcf0e48e5c6d4457afb3f3d","type":"step-start"}}
+{"type":"text","timestamp":1788950680567,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c5063e001U4qlYffkX","messageID":"msg_g001a085c4c6a5001BtxWpNzj8","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"text","text":"Format confirmed. Let me see the tail of the prior artifact (reading/claims sections) and the issue-163 INWARD claims for grounding.","time":{"start":1788950677054,"end":1788950680564}}}
+{"type":"tool_use","timestamp":1788950680591,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"bash","callID":"call_7e6ef6ccdd224269a0eff9f8","state":{"status":"completed","input":{"command":"python3 -c \"\nimport json\nt=json.load(open('/mnt/workdrive/issue161-harness/research/issue-163/task_tree.json'))\ninw=t['artifacts']['INWARD']\nprint(json.dumps(inw.get('claims'), indent=1)[:2500])\n\"","description":"Show INWARD claims for issue-163"},"output":"[\n {\n  \"id\": \"I1\",\n  \"claim\": \"Relevant file: src/rune/curator.py\",\n  \"evidence\": [\n   \"src/rune/curator.py\"\n  ],\n  \"status\": \"CURRENT\"\n },\n {\n  \"id\": \"I2\",\n  \"claim\": \"Relevant file: src/rune/rune_tui.py\",\n  \"evidence\": [\n   \"src/rune/rune_tui.py\"\n  ],\n  \"status\": \"CURRENT\"\n },\n {\n  \"id\": \"I3\",\n  \"claim\": \"Relevant file: src/rune/graph_memory.py\",\n  \"evidence\": [\n   \"src/rune/graph_memory.py\"\n  ],\n  \"status\": \"CURRENT\"\n },\n {\n  \"id\": \"I4\",\n  \"claim\": \"Relevant file: src/rune/sleep_time.py\",\n  \"evidence\": [\n   \"src/rune/sleep_time.py\"\n  ],\n  \"status\": \"CURRENT\"\n },\n {\n  \"id\": \"I5\",\n  \"claim\": \"Relevant file: src/rune/elastic_cognition.py\",\n  \"evidence\": [\n   \"src/rune/elastic_cognition.py\"\n  ],\n  \"status\": \"CURRENT\"\n }\n]\n","metadata":{"output":"[\n {\n  \"id\": \"I1\",\n  \"claim\": \"Relevant file: src/rune/curator.py\",\n  \"evidence\": [\n   \"src/rune/curator.py\"\n  ],\n  \"status\": \"CURRENT\"\n },\n {\n  \"id\": \"I2\",\n  \"claim\": \"Relevant file: src/rune/rune_tui.py\",\n  \"evidence\": [\n   \"src/rune/rune_tui.py\"\n  ],\n  \"status\": \"CURRENT\"\n },\n {\n  \"id\": \"I3\",\n  \"claim\": \"Relevant file: src/rune/graph_memory.py\",\n  \"evidence\": [\n   \"src/rune/graph_memory.py\"\n  ],\n  \"status\": \"CURRENT\"\n },\n {\n  \"id\": \"I4\",\n  \"claim\": \"Relevant file: src/rune/sleep_time.py\",\n  \"evidence\": [\n   \"src/rune/sleep_time.py\"\n  ],\n  \"status\": \"CURRENT\"\n },\n {\n  \"id\": \"I5\",\n  \"claim\": \"Relevant file: src/rune/elastic_cognition.py\",\n  \"evidence\": [\n   \"src/rune/elastic_cognition.py\"\n  ],\n  \"status\": \"CURRENT\"\n }\n]\n","exit":0,"description":"Show INWARD claims for issue-163","truncated":false},"title":"Show INWARD claims for issue-163","time":{"start":1788950680588,"end":1788950680591}},"id":"prt_g001a085c51217001HuOcmvfSS","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","messageID":"msg_g001a085c4c6a5001BtxWpNzj8"}}
+{"type":"tool_use","timestamp":1788950680594,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"bash","callID":"call_5b7ecb06f606423ba952223e","state":{"status":"completed","input":{"command":"python3 -c \"\nimport json\nd=json.load(open('/mnt/workdrive/issue161-harness/research/issue-161/outward.json'))\nprint('top keys:', list(d.keys()))\nr=d.get('reading') or d.get('read_sources')\nif r: print(json.dumps(r, indent=1)[:2500])\nprint('...')\nprint('final keys/lines:', json.dumps({k:v for k,v in d.items() if k not in ('discovery','reading')}, indent=1)[:1200])\n\"","description":"Show remaining sections of prior outward.json"},"output":"top keys: ['stage', 'process_id', 'issue', 'round', 'subquestion', 'discovery', 'reading', 'limitations', 'contradictions', 'repo_grounding_note', 'stop_condition']\n{\n \"sources_read\": [\n  {\n   \"id\": \"O2\",\n   \"url\": \"https://qdrant.tech/benchmarks/\",\n   \"receipt\": \"full page fetched via webfetch (markdown)\",\n   \"class_note\": \"vendor-published benchmark portal; FAQ openly discusses own bias\",\n   \"claims\": [\n    {\n     \"id\": \"E1\",\n     \"claim\": \"Qdrant's benchmarks are comparative (relative numbers, not absolute), run on the same machine for all engines, on affordable reproducible hardware, and are fully open-sourced (github.com/qdrant/vector-db-benchmark).\",\n     \"section\": \"intro, principles\"\n    },\n    {\n     \"id\": \"E2\",\n     \"claim\": \"Vector-search speed must only be compared at a matched precision threshold (ANN trades precision for speed); the vendor states most published benchmarks miss this.\",\n     \"section\": \"How to read the results\"\n    },\n    {\n     \"id\": \"E3\",\n     \"claim\": \"Single-node results (updated Jan/June 2024): Qdrant achieves highest RPS and lowest latency in almost all scenarios at matched precision; Elasticsearch indexes 10x slower at scale (32 min vs 5.5 h for 10M\\u00d796d); Milvus is fastest at indexing; Redis wins RPS only at low precision; Weaviate improved least.\",\n     \"section\": \"Observations\"\n    },\n    {\n     \"id\": \"E4\",\n     \"claim\": \"Benchmark datasets are 1M\\u201310M vector scale: dbpedia-openai-1M (1M\\u00d71536 cosine), deep-image (10M\\u00d796), gist-960 (1M\\u00d7960), glove-100 (1.2M\\u00d7100); client/server on Azure with all engines memory-capped at 25GB.\",\n     \"section\": \"Tested datasets, Setup\"\n    },\n    {\n     \"id\": \"E5\",\n     \"claim\": \"Filtered ANN search: post-filtering loses results, pre-filtering masks scale linearly, and over-filtering disconnects the HNSW graph causing accuracy collapse; Qdrant claims a filterable-HNSW + query-planning approach avoiding these.\",\n     \"section\": \"Filtered search benchmark\"\n    },\n    {\n     \"id\": \"E6\",\n     \"claim\": \"The FAQ admits probable vendor bias ('Probably, yes'), excludes FAISS/Annoy as libraries rather than production engines, tests only open-source engines, and uses official Python clients for measurement.\",\n     \"section\": \"Benchmarks F.A.Q.\"\n    }\n   ]\n  },\n  {\n   \"id\": \"O4\",\n   \"url\": \"https://github.com/mycman/sqlite-vec-benchmark\",\n   \"receipt\": \"full README fetched via webfetch (markdown); results/README and JSON not fetched\",\n   \"class_note\": \"independent single-author harness; 0 stars, 1 commit \\u2014 treat as illustrative, not authoritative\",\n   \"claims\": [\n    {\n     \"id\": \"E7\",\n     \"claim\": \"The harness compares SQLite\n...\nfinal keys/lines: {\n \"stage\": \"OUTWARD\",\n \"process_id\": \"research-161-r1\",\n \"issue\": 161,\n \"round\": 1,\n \"subquestion\": \"Memory backend abstraction + comparative benchmark harness (SQLite FTS5/sqlite-vec vs Qdrant vs graph backends)\",\n \"limitations\": [\n  \"sqlite-vec's official maintainer docs (asg017/sqlite-vec) were never fetched \\u2014 the DuckDuckGo bot challenge blocked the targeted query (Q3) and no alternate engine was used; sqlite-vec capabilities/limits therefore rest on O4/O2 descriptions, not the primary documentation.\",\n  \"O4's direct SQLite-hybrid vs Qdrant/FAISS/Weaviate numbers are unpublished (deferred to v0.2, E10) \\u2014 its headline 'matches or beats managed vector DBs' is not backed by published head-to-head rows in that repo; only the three SQLite configurations have numbers.\",\n  \"O2 contains no sqlite-vec rows at all and predates it as a comparison; it is vendor-published and self-acknowledges possible bias (E6), so it cannot serve as neutral arbiter for the SQLite-vs-Qdrant question.\",\n  \"No dedicated graph-backend benchmark (Kuzu, Neo4j, Memgraph, etc.) was found or read in this discovery set; graph-side evidence is indirect \\u2014 substrate-family comparisons from O15 only.\",\n\n","metadata":{"output":"top keys: ['stage', 'process_id', 'issue', 'round', 'subquestion', 'discovery', 'reading', 'limitations', 'contradictions', 'repo_grounding_note', 'stop_condition']\n{\n \"sources_read\": [\n  {\n   \"Line truncated
+{"type":"step_finish","timestamp":1788950680617,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c514110011NOyk1oqG","reason":"tool-calls","snapshot":"294fcece8de9dc800ad8caa2d7bd9aa4ca2b77c3","messageID":"msg_g001a085c4c6a5001BtxWpNzj8","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"step-finish","tokens":{"total":43477,"input":1118,"output":239,"reasoning":200,"cache":{"write":0,"read":41920}},"cost":0}}
+{"type":"step_start","timestamp":1788950687425,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c52ebf001IrG7rn0QZ","messageID":"msg_g001a085c5144c001pwjGsjfIH","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","snapshot":"86dbd3c1d59558624777f4e11b2b2c88e28597a2","type":"step-start"}}
+{"type":"text","timestamp":1788950738311,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c5e3f8001Q4vEH7kX9","messageID":"msg_g001a085c5144c001pwjGsjfIH","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"text","text":"Format and grounding are clear. The INWARD claims are auto-generated keyword matches (`src/rune/graph_memory.py` is the headless SQLite graph tier — the thing a graph backend would replace/extend). Now I'll execute the OUTWARD discovery: batch parallel SERP queries via the proven DuckDuckGo HTML technique, covering all four named candidates (Neo4j, FalkorDB, LadybugDB, Graphiti).","time":{"start":1788950733816,"end":1788950738308}}}
+{"type":"tool_use","timestamp":1788950739278,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"webfetch","callID":"call_c09ff4cf9fe04c6c94b0ff30","state":{"status":"completed","input":{"format":"markdown","url":"https://duckduckgo.com/html/?q=neo4j+temporal+versioning+bitemporal+cypher+valid+time"},"output":"     neo4j temporal versioning bitemporal cypher valid time at DuckDuckGo         \n\n[](/html/ \"DuckDuckGo\")\n\n \n\nAll Regions Argentina Australia Austria Belgium (fr) Belgium (nl) Brazil Bulgaria Canada (en) Canada (fr) Catalonia Chile China Colombia Croatia Czech Republic Denmark Estonia Finland France Germany Greece Hong Kong Hungary Iceland India (en) Indonesia (en) Ireland Israel (en) Italy Japan Korea Latvia Lithuania Malaysia (en) Mexico Netherlands New Zealand Norway Pakistan (en) Peru Philippines (en) Poland Portugal Romania Russia Saudi Arabia Singapore Slovakia Slovenia South Africa Spain (ca) Spain (es) Sweden Switzerland (de) Switzerland (fr) Taiwan Thailand (en) Turkey US (English) US (Spanish) Ukraine United Kingdom Vietnam (en)\n\nAny Time Past Day Past Week Past Month Past Year\n\n## [Temporal values - Cypher Manual - Neo4j Graph Data Platform](//duckduckgo.com/l/?uddg=https%3A%2F%2Fneo4j.com%2Fdocs%2Fcypher%2Dmanual%2Fcurrent%2Fvalues%2Dand%2Dtypes%2Ftemporal%2F&rut=8ecf8872e498541e041de04321990b831badb7c1148cc3ab52a85ee6544e122a)\n\n [![](//external-content.duckduckgo.com/ip3/neo4j.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fneo4j.com%2Fdocs%2Fcypher%2Dmanual%2Fcurrent%2Fvalues%2Dand%2Dtypes%2Ftemporal%2F&rut=8ecf8872e498541e041de04321990b831badb7c1148cc3ab52a85ee6544e122a)[neo4j.com/docs/cypher-manual/current/values-and-types/temporal/](//duckduckgo.com/l/?uddg=https%3A%2F%2Fneo4j.com%2Fdocs%2Fcypher%2Dmanual%2Fcurrent%2Fvalues%2Dand%2Dtypes%2Ftemporal%2F&rut=8ecf8872e498541e041de04321990b831badb7c1148cc3ab52a85ee6544e122a)\n\n[**Cypher**® has built-in support for handling **temporal** values, which can be stored as properties on nodes and relationships in **Neo4j** databases. This section will discuss how **Cypher** handles **time** zones, before exploring **temporal** values in more detail.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fneo4j.com%2Fdocs%2Fcypher%2Dmanual%2Fcurrent%2Fvalues%2Dand%2Dtypes%2Ftemporal%2F&rut=8ecf8872e498541e041de04321990b831badb7c1148cc3ab52a85ee6544e122a)\n\n## [A Practical Guide to Temporal Versioning in Neo4j: Nodes, Relationships ...](//duckduckgo.com/l/?uddg=https%3A%2F%2Fdev.to%2Fsatyam_shree_087caef77512%2Fa%2Dpractical%2Dguide%2Dto%2Dtemporal%2Dversioning%2Din%2Dneo4j%2Dnodes%2Drelationships%2Dand%2Dhistorical%2Dgraph%2D1m5g&rut=8c03671afcf8f36c6f59384fc9d6b5b5a243ac3d7955a5b981a7f5a4b45ad2d5)\n\n [![](//external-content.duckduckgo.com/ip3/dev.to.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fdev.to%2Fsatyam_shree_087caef77512%2Fa%2Dpractical%2Dguide%2Dto%2Dtemporal%2Dversioning%2Din%2Dneo4j%2Dnodes%2Drelationships%2Dand%2Dhistorical%2Dgraph%2D1m5g&rut=8c03671afcf8f36c6f59384fc9d6b5b5a243ac3d7955a5b981a7f5a4b45ad2d5)[dev.to/satyam\\_shree\\_087caef77512/a-practical-guide-to-temporal-versioning-in-neo4j-nodes-relationships-and-historical-graph-1m5g](//duckduckgo.com/l/?uddg=https%3A%2F%2Fdev.to%2Fsatyam_shree_087caef77512%2Fa%2Dpractical%2Dguide%2Dto%2Dtemporal%2Dversioning%2Din%2Dneo4j%2Dnodes%2Drelationships%2Dand%2Dhistorical%2Dgraph%2D1m5g&rut=8c03671afcf8f36c6f59384fc9d6b5b5a243ac3d7955a5b981a7f5a4b45ad2d5)     2025-12-05T00:00:00.0000000\n\n[Modern graph databases often represent dynamic systems: applications evolving over **time**, relationships appearing and disappearing, and entities acquiring new attributes as data changes. When the underlying graph is user-facing, maintaining a complete history of nodes and relationships becomes a critical capability. This article presents a production-grade, **bitemporal** **versioning** model for **Neo4j** ...](//duckduckgo.com/l/?uddg=https%3A%2F%2Fdev.to%2Fsatyam_shree_087caef77512%2Fa%2Dpractical%2Dguide%2Dto%2Dtemporal%2Dversioning%2Din%2Dneo4j%2Dnodes%2Drelationships%2Dand%2Dhistorical%2Dgraph%2D1m5g&rut=8c03671afcf8f36c6f59384fc9d6b5b5a243ac3d7955a5b981a7f5a4b45ad2d5)\n\n## [Cypher Date and Time Functions - kindatechnical()](//duckduckgo.com/l/?uddg=https%3A%2F%2Fkindatechnical.com%2Fcypher%2Fcypher%2Ddate%2Dand%2Dtime%2Dfunctions.html&rut=908676e3b2eb4c746695be7c9616231dac8791798528b3617a745f8cac017b40)\n\n [![](//external-content.duckduckgo.com/ip3/kindatechnical.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fkindatechnical.com%2Fcypher%2Fcypher%2Ddate%2Dand%2Dtime%2Dfunctions.html&rut=908676e3b2eb4c746695be7c9616231dac8791798528b3617a745f8cac017b40)[kindatechnical.com/cypher/cypher-date-and-time-functions.html](//duckduckgo.com/l/?uddg=https%3A%2F%2Fkindatechnical.com%2Fcypher%2Fcypher%2Ddate%2Dand%2Dtime%2Dfunctions.html&rut=908676e3b2eb4c746695be7c9616231dac8791798528b3617a745f8cac017b40)\n\n[Master **Cypher** date and **time** functions in **Neo4j**, incluLine truncated
+{"type":"tool_use","timestamp":1788950739289,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"webfetch","callID":"call_94e67b5e58e847679bd75b3f","state":{"status":"completed","input":{"format":"markdown","url":"https://duckduckgo.com/html/?q=ladybugdb+graph+database+kuzu+fork"},"output":"     ladybugdb graph database kuzu fork at DuckDuckGo         \n\n[](/html/ \"DuckDuckGo\")\n\n \n\nAll Regions Argentina Australia Austria Belgium (fr) Belgium (nl) Brazil Bulgaria Canada (en) Canada (fr) Catalonia Chile China Colombia Croatia Czech Republic Denmark Estonia Finland France Germany Greece Hong Kong Hungary Iceland India (en) Indonesia (en) Ireland Israel (en) Italy Japan Korea Latvia Lithuania Malaysia (en) Mexico Netherlands New Zealand Norway Pakistan (en) Peru Philippines (en) Poland Portugal Romania Russia Saudi Arabia Singapore Slovakia Slovenia South Africa Spain (ca) Spain (es) Sweden Switzerland (de) Switzerland (fr) Taiwan Thailand (en) Turkey US (English) US (Spanish) Ukraine United Kingdom Vietnam (en)\n\nAny Time Past Day Past Week Past Month Past Year\n\n## [LadybugDB: DuckDB for Graphs — The KuzuDB Successor](//duckduckgo.com/l/?uddg=https%3A%2F%2Fladybugdb.com%2F&rut=39d16a40aa872ec0274642e5a5022faace352437032eff935ce0bd16e337dc4e)\n\n [![](//external-content.duckduckgo.com/ip3/ladybugdb.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fladybugdb.com%2F&rut=39d16a40aa872ec0274642e5a5022faace352437032eff935ce0bd16e337dc4e)[ladybugdb.com](//duckduckgo.com/l/?uddg=https%3A%2F%2Fladybugdb.com%2F&rut=39d16a40aa872ec0274642e5a5022faace352437032eff935ce0bd16e337dc4e)\n\n[**LadybugDB** is DuckDB for **graphs** — the embedded columnar **graph** **database** and successor to KuzuDB. Built for agentic AI in highly regulated industries. OpenAPI spec, MCP server, npm/PyPI SDKs.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fladybugdb.com%2F&rut=39d16a40aa872ec0274642e5a5022faace352437032eff935ce0bd16e337dc4e)\n\n## [GitHub - LadybugDB/ladybug: LadybugDB a graph database](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2FLadybugDB%2Fladybug&rut=b8ba55b3caf5040967d438d5f3e85b53b7c3c202baa0ca7bb8f5ed9bf6233077)\n\n [![](//external-content.duckduckgo.com/ip3/github.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2FLadybugDB%2Fladybug&rut=b8ba55b3caf5040967d438d5f3e85b53b7c3c202baa0ca7bb8f5ed9bf6233077)[github.com/LadybugDB/ladybug](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2FLadybugDB%2Fladybug&rut=b8ba55b3caf5040967d438d5f3e85b53b7c3c202baa0ca7bb8f5ed9bf6233077)\n\n[**LadybugDB** a **graph** **database**. Contribute to **LadybugDB**/ladybug development by creating an account on GitHub.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2FLadybugDB%2Fladybug&rut=b8ba55b3caf5040967d438d5f3e85b53b7c3c202baa0ca7bb8f5ed9bf6233077)\n\n## [GitHub - lcretan/LadybugDB-KuzuDB.ladybug: LadybugDB a graph database](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Flcretan%2FLadybugDB%2DKuzuDB.ladybug&rut=90379b855adaa5fca57f43657a3fbbc3e3361c55b5009e2b12c81584b0aeb4ad)\n\n [![](//external-content.duckduckgo.com/ip3/github.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Flcretan%2FLadybugDB%2DKuzuDB.ladybug&rut=90379b855adaa5fca57f43657a3fbbc3e3361c55b5009e2b12c81584b0aeb4ad)[github.com/lcretan/LadybugDB-KuzuDB.ladybug](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Flcretan%2FLadybugDB%2DKuzuDB.ladybug&rut=90379b855adaa5fca57f43657a3fbbc3e3361c55b5009e2b12c81584b0aeb4ad)\n\n[Ladybug is an embedded **graph** **database** built for query speed and scalability. Ladybug is optimized for handling complex analytical workloads on very large **databases** and provides a set of retrieval features, such as a full text search and vector indices.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Flcretan%2FLadybugDB%2DKuzuDB.ladybug&rut=90379b855adaa5fca57f43657a3fbbc3e3361c55b5009e2b12c81584b0aeb4ad)\n\n## [Documentation | Ladybug](//duckduckgo.com/l/?uddg=https%3A%2F%2Fdocs.ladybugdb.com%2F&rut=31384e12b30b5f7a3e0d6ee983128f90a62a469ce0362c17d6058131168828b3)\n\n [![](//external-content.duckduckgo.com/ip3/docs.ladybugdb.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fdocs.ladybugdb.com%2F&rut=31384e12b30b5f7a3e0d6ee983128f90a62a469ce0362c17d6058131168828b3)[docs.ladybugdb.com](//duckduckgo.com/l/?uddg=https%3A%2F%2Fdocs.ladybugdb.com%2F&rut=31384e12b30b5f7a3e0d6ee983128f90a62a469ce0362c17d6058131168828b3)\n\n[Ladybug is a state-of-the-art **graph** DBMS that came out of state-of-the-art academic research and is built by a core team of **database** experts who relentlessly focus on scalability and performance. Its founding engineers have co-authored several cutting-edge technical papers and articles on storing and querying large **graphs**.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fdocs.ladybugdb.com%2F&rut=31384e12b30b5f7a3e0d6ee983128f90a62a469ce0362c17d6058131168828b3)\n\n## [From Kuzu to Ladybug: The embedded graph ecosystem powers onward](//duckduckgo.com/l/?uddg=Line truncated
+{"type":"tool_use","timestamp":1788950739291,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"webfetch","callID":"call_db61ded8edbf4ae6808ce2cf","state":{"status":"completed","input":{"format":"markdown","url":"https://duckduckgo.com/html/?q=neo4j+vs+falkordb+graph+database+benchmark+comparison"},"output":"     neo4j vs falkordb graph database benchmark comparison at DuckDuckGo         \n\n[](/html/ \"DuckDuckGo\")\n\n \n\nAll Regions Argentina Australia Austria Belgium (fr) Belgium (nl) Brazil Bulgaria Canada (en) Canada (fr) Catalonia Chile China Colombia Croatia Czech Republic Denmark Estonia Finland France Germany Greece Hong Kong Hungary Iceland India (en) Indonesia (en) Ireland Israel (en) Italy Japan Korea Latvia Lithuania Malaysia (en) Mexico Netherlands New Zealand Norway Pakistan (en) Peru Philippines (en) Poland Portugal Romania Russia Saudi Arabia Singapore Slovakia Slovenia South Africa Spain (ca) Spain (es) Sweden Switzerland (de) Switzerland (fr) Taiwan Thailand (en) Turkey US (English) US (Spanish) Ukraine United Kingdom Vietnam (en)\n\nAny Time Past Day Past Week Past Month Past Year\n\n## [Graph Database Benchmark: Neo4j vs FalkorDB vs Memgraph](//duckduckgo.com/l/?uddg=https%3A%2F%2Faimultiple.com%2Fgraph%2Ddatabases&rut=9a7cc6962047607446f0fff26b57d1b567c8b709fa0367b3d50af944777f4bc5)\n\n [![](//external-content.duckduckgo.com/ip3/aimultiple.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Faimultiple.com%2Fgraph%2Ddatabases&rut=9a7cc6962047607446f0fff26b57d1b567c8b709fa0367b3d50af944777f4bc5)[aimultiple.com/graph-databases](//duckduckgo.com/l/?uddg=https%3A%2F%2Faimultiple.com%2Fgraph%2Ddatabases&rut=9a7cc6962047607446f0fff26b57d1b567c8b709fa0367b3d50af944777f4bc5)     2026-04-15T00:00:00.0000000\n\n[We benchmarked **Neo4j**, **FalkorDB**, and Memgraph on a synthetic **graph** derived from 120,000 Amazon product reviews (381K nodes, 804K edges).](//duckduckgo.com/l/?uddg=https%3A%2F%2Faimultiple.com%2Fgraph%2Ddatabases&rut=9a7cc6962047607446f0fff26b57d1b567c8b709fa0367b3d50af944777f4bc5)\n\n## [FalkorDB vs Neo4j: Graph Database Performance Benchmarks](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.falkordb.com%2Fblog%2Fgraph%2Ddatabase%2Dperformance%2Dbenchmarks%2Dfalkordb%2Dvs%2Dneo4j%2F&rut=84e98115c2127179c953071c0670c8040f767c50f6063572c8b5d820a2ff29ac)\n\n [![](//external-content.duckduckgo.com/ip3/www.falkordb.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.falkordb.com%2Fblog%2Fgraph%2Ddatabase%2Dperformance%2Dbenchmarks%2Dfalkordb%2Dvs%2Dneo4j%2F&rut=84e98115c2127179c953071c0670c8040f767c50f6063572c8b5d820a2ff29ac)[www.falkordb.com/blog/graph-database-performance-benchmarks-falkordb-vs-neo4j/](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.falkordb.com%2Fblog%2Fgraph%2Ddatabase%2Dperformance%2Dbenchmarks%2Dfalkordb%2Dvs%2Dneo4j%2F&rut=84e98115c2127179c953071c0670c8040f767c50f6063572c8b5d820a2ff29ac)     2024-12-02T00:00:00.0000000\n\n[New performance **benchmarks** results demonstrate **FalkorDB's** significant performance advantages in aggregate expansion operations compared to **Neo4j**. The data reveals consistent sub-140ms response times at p99, while **Neo4j** experiences multi-second latencies under similar conditions. The **benchmark** is composed of 11 templated queries, which represent a general usage of classic **graph** operations ...](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.falkordb.com%2Fblog%2Fgraph%2Ddatabase%2Dperformance%2Dbenchmarks%2Dfalkordb%2Dvs%2Dneo4j%2F&rut=84e98115c2127179c953071c0670c8040f767c50f6063572c8b5d820a2ff29ac)\n\n## [FalkorDB vs Neo4j : Key Differences - puppygraph.com](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.puppygraph.com%2Fblog%2Ffalkordb%2Dvs%2Dneo4j&rut=00f001e76daa6fec9322c175ac2ced7b6c3e8580b63d1f53e1b3739b35737249)\n\n [![](//external-content.duckduckgo.com/ip3/www.puppygraph.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.puppygraph.com%2Fblog%2Ffalkordb%2Dvs%2Dneo4j&rut=00f001e76daa6fec9322c175ac2ced7b6c3e8580b63d1f53e1b3739b35737249)[www.puppygraph.com/blog/falkordb-vs-neo4j](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.puppygraph.com%2Fblog%2Ffalkordb%2Dvs%2Dneo4j&rut=00f001e76daa6fec9322c175ac2ced7b6c3e8580b63d1f53e1b3739b35737249)\n\n[Compare **FalkorDB** **vs** **Neo4j** across architecture, performance, scalability, and operational tradeoffs. Learn when to use each **graph** **database**.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.puppygraph.com%2Fblog%2Ffalkordb%2Dvs%2Dneo4j&rut=00f001e76daa6fec9322c175ac2ced7b6c3e8580b63d1f53e1b3739b35737249)\n\n## [FalkorDB vs Neo4j: 2026 Benchmarks & Honest Pick](//duckduckgo.com/l/?uddg=https%3A%2F%2Fknodegraph.com%2Fblog%2Ffalkordb%2Dvs%2Dneo4j%2F&rut=11bfb2e6aa30c47ec0c600446a9612a57e45cbcf9eda6444c50aa20614c6fa15)\n\n [![](//external-content.duckduckgo.com/ip3/knodegraph.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fknodegraph.com%2Fblog%2Ffalkordb%2Dvs%2Dneo4j%2F&rut=11bfb2e6aa30c47ec0c600446a9612a57e45cbcf9eda6444c50aa20614c6fa15)[knodegraph.comLine truncated
+{"type":"tool_use","timestamp":1788950739313,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"webfetch","callID":"call_10663d650f4849d5bb6715e4","state":{"status":"completed","input":{"format":"markdown","url":"https://duckduckgo.com/html/?q=graphiti+zep+temporal+knowledge+graph+agent+memory+neo4j+falkordb"},"output":"     graphiti zep temporal knowledge graph agent memory neo4j falkordb at DuckDuckGo         \n\n[](/html/ \"DuckDuckGo\")\n\n \n\nAll Regions Argentina Australia Austria Belgium (fr) Belgium (nl) Brazil Bulgaria Canada (en) Canada (fr) Catalonia Chile China Colombia Croatia Czech Republic Denmark Estonia Finland France Germany Greece Hong Kong Hungary Iceland India (en) Indonesia (en) Ireland Israel (en) Italy Japan Korea Latvia Lithuania Malaysia (en) Mexico Netherlands New Zealand Norway Pakistan (en) Peru Philippines (en) Poland Portugal Romania Russia Saudi Arabia Singapore Slovakia Slovenia South Africa Spain (ca) Spain (es) Sweden Switzerland (de) Switzerland (fr) Taiwan Thailand (en) Turkey US (English) US (Spanish) Ukraine United Kingdom Vietnam (en)\n\nAny Time Past Day Past Week Past Month Past Year\n\n## [GitHub - getzep/graphiti: Build Real-Time Knowledge Graphs for AI Agents](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Fgetzep%2Fgraphiti&rut=e0eec4286ae13b2a2621cb77f8e63610e0a48bf4a825dd3b209363a114cc4a4a)\n\n [![](//external-content.duckduckgo.com/ip3/github.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Fgetzep%2Fgraphiti&rut=e0eec4286ae13b2a2621cb77f8e63610e0a48bf4a825dd3b209363a114cc4a4a)[github.com/getzep/graphiti](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Fgetzep%2Fgraphiti&rut=e0eec4286ae13b2a2621cb77f8e63610e0a48bf4a825dd3b209363a114cc4a4a)\n\n[**Graphiti** is a framework for building and querying **temporal** context **graphs** for AI **agents**. Unlike static **knowledge** **graphs**, **Graphiti's** context **graphs** track how facts change over time, maintain provenance to source data, and support both prescribed and learned ontology — making them purpose-built for **agents** operating on evolving, real-world data.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Fgetzep%2Fgraphiti&rut=e0eec4286ae13b2a2621cb77f8e63610e0a48bf4a825dd3b209363a114cc4a4a)\n\n## [Graphiti: Knowledge graph memory for an agentic world](//duckduckgo.com/l/?uddg=https%3A%2F%2Fneo4j.com%2Fblog%2Fdeveloper%2Fgraphiti%2Dknowledge%2Dgraph%2Dmemory%2F&rut=f73cef9f24d804dc499123dcbad569857c129ca78b72560305f7409c3e14a0fc)\n\n [![](//external-content.duckduckgo.com/ip3/neo4j.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fneo4j.com%2Fblog%2Fdeveloper%2Fgraphiti%2Dknowledge%2Dgraph%2Dmemory%2F&rut=f73cef9f24d804dc499123dcbad569857c129ca78b72560305f7409c3e14a0fc)[neo4j.com/blog/developer/graphiti-knowledge-graph-memory/](//duckduckgo.com/l/?uddg=https%3A%2F%2Fneo4j.com%2Fblog%2Fdeveloper%2Fgraphiti%2Dknowledge%2Dgraph%2Dmemory%2F&rut=f73cef9f24d804dc499123dcbad569857c129ca78b72560305f7409c3e14a0fc)     2025-03-24T00:00:00.0000000\n\n[For an in-depth technical exploration of **Graphiti** and performance benchmarks, check out **Zep**: A **Temporal** **Knowledge** **Graph** Architecture for **Agent** **Memory**. A key feature is **Graphiti's** bi-**temporal** model, which tracks when an event occurred and when it was ingested.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fneo4j.com%2Fblog%2Fdeveloper%2Fgraphiti%2Dknowledge%2Dgraph%2Dmemory%2F&rut=f73cef9f24d804dc499123dcbad569857c129ca78b72560305f7409c3e14a0fc)\n\n## [Graphiti - FalkorDB Docs](//duckduckgo.com/l/?uddg=https%3A%2F%2Fdocs.falkordb.com%2Fagentic%2Dmemory%2Fgraphiti&rut=5ec400c001b71ae4c58a30b0ed31d3312ab8c9d0b5ede0da1bfa788d951b2a70)\n\n [![](//external-content.duckduckgo.com/ip3/docs.falkordb.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fdocs.falkordb.com%2Fagentic%2Dmemory%2Fgraphiti&rut=5ec400c001b71ae4c58a30b0ed31d3312ab8c9d0b5ede0da1bfa788d951b2a70)[docs.falkordb.com/agentic-memory/graphiti](//duckduckgo.com/l/?uddg=https%3A%2F%2Fdocs.falkordb.com%2Fagentic%2Dmemory%2Fgraphiti&rut=5ec400c001b71ae4c58a30b0ed31d3312ab8c9d0b5ede0da1bfa788d951b2a70)\n\n[Build temporally-aware, multi-tenant **knowledge** **graphs** with **Graphiti** and **FalkorDB** for AI systems with persistent **memory**, hybrid search, and real-time data integration.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fdocs.falkordb.com%2Fagentic%2Dmemory%2Fgraphiti&rut=5ec400c001b71ae4c58a30b0ed31d3312ab8c9d0b5ede0da1bfa788d951b2a70)\n\n## [GitHub - Memory-Agents/graphiti](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2FMemory%2DAgents%2Fgraphiti%2F&rut=5c3656175ee42204f5fd3688a79e1f368f7276cabeac4c02d9f5d515fb9f1bc5)\n\n [![](//external-content.duckduckgo.com/ip3/github.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2FMemory%2DAgents%2Fgraphiti%2F&rut=5c3656175ee42204f5fd3688a79e1f368f7276cabeac4c02d9f5d515fb9f1bc5)[github.com/Memory-Agents/graphiti/](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2FMemoLine truncated
+{"type":"tool_use","timestamp":1788950739643,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"webfetch","callID":"call_87ef8ff179854a0cbee1b4f8","state":{"status":"completed","input":{"format":"markdown","url":"https://duckduckgo.com/html/?q=falkordb+redisgraph+successor+cypher+features+github"},"output":"     falkordb redisgraph successor cypher features github at DuckDuckGo         \n\n[](/html/ \"DuckDuckGo\")\n\n \n\nAll Regions Argentina Australia Austria Belgium (fr) Belgium (nl) Brazil Bulgaria Canada (en) Canada (fr) Catalonia Chile China Colombia Croatia Czech Republic Denmark Estonia Finland France Germany Greece Hong Kong Hungary Iceland India (en) Indonesia (en) Ireland Israel (en) Italy Japan Korea Latvia Lithuania Malaysia (en) Mexico Netherlands New Zealand Norway Pakistan (en) Peru Philippines (en) Poland Portugal Romania Russia Saudi Arabia Singapore Slovakia Slovenia South Africa Spain (ca) Spain (es) Sweden Switzerland (de) Switzerland (fr) Taiwan Thailand (en) Turkey US (English) US (Spanish) Ukraine United Kingdom Vietnam (en)\n\nAny Time Past Day Past Week Past Month Past Year\n\n## [GitHub - FalkorDB/FalkorDB: A super fast Graph Database uses GraphBLAS ...](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2FFalkorDB%2FFalkorDB&rut=583fc56960fd5d777812618fe5419784a4daa7588570f13ee10f7a224917b2d7)\n\n [![](//external-content.duckduckgo.com/ip3/github.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2FFalkorDB%2FFalkorDB&rut=583fc56960fd5d777812618fe5419784a4daa7588570f13ee10f7a224917b2d7)[github.com/FalkorDB/FalkorDB](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2FFalkorDB%2FFalkorDB&rut=583fc56960fd5d777812618fe5419784a4daa7588570f13ee10f7a224917b2d7)\n\n[Our goal is to build a high-performance Knowledge Graph tailored for Large Language Models (LLMs), prioritizing exceptionally low latency to ensure fast and efficient information delivery through our Graph Database. 🆕 **FalkorDB** is the first queryable Property Graph database to leverage sparse matrices for representing the adjacency matrix in graphs and linear algebra for querying.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2FFalkorDB%2FFalkorDB&rut=583fc56960fd5d777812618fe5419784a4daa7588570f13ee10f7a224917b2d7)\n\n## [FalkorDB · GitHub](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2FFalkorDB&rut=475250bed7593c4bf233105810d442d46c205a1b0390e212b7ed2517611d4216)\n\n [![](//external-content.duckduckgo.com/ip3/github.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2FFalkorDB&rut=475250bed7593c4bf233105810d442d46c205a1b0390e212b7ed2517611d4216)[github.com/FalkorDB](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2FFalkorDB&rut=475250bed7593c4bf233105810d442d46c205a1b0390e212b7ed2517611d4216)\n\n[**FalkorDB** is the first queryable Property Graphdatabase to use sparse matricesto represent the adjacency matrixin graphs and linear algebrato query the graph.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2FFalkorDB&rut=475250bed7593c4bf233105810d442d46c205a1b0390e212b7ed2517611d4216)\n\n## [RedisGraph EOL: FalkorDB Migration Guide](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.falkordb.com%2Fblog%2Fredisgraph%2Deol%2Dmigration%2Dguide%2F&rut=bc2aca3505408677678b2e697daadf7402fa91931a8287bfef3d7d68d09854ce)\n\n [![](//external-content.duckduckgo.com/ip3/www.falkordb.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.falkordb.com%2Fblog%2Fredisgraph%2Deol%2Dmigration%2Dguide%2F&rut=bc2aca3505408677678b2e697daadf7402fa91931a8287bfef3d7d68d09854ce)[www.falkordb.com/blog/redisgraph-eol-migration-guide/](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.falkordb.com%2Fblog%2Fredisgraph%2Deol%2Dmigration%2Dguide%2F&rut=bc2aca3505408677678b2e697daadf7402fa91931a8287bfef3d7d68d09854ce)     2025-02-16T00:00:00.0000000\n\n[**FalkorDB** maintains backward compatibility with **Cypher** queries, supporting key **features** like graph traversal, pattern matching, and filtering, making it easier for existing **RedisGraph** users to adapt.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.falkordb.com%2Fblog%2Fredisgraph%2Deol%2Dmigration%2Dguide%2F&rut=bc2aca3505408677678b2e697daadf7402fa91931a8287bfef3d7d68d09854ce)\n\n## [RedisGraph Is Officially Dead (EOL Jan 31, 2025): Migration Paths That ...](//duckduckgo.com/l/?uddg=https%3A%2F%2Fbasekv.com%2Farticles%2Fredisgraph%2Ddeprecated%2Dnow%2Dwhat&rut=136ffcb208bf81ea46214aedfcf8e7c0a5a31430e32b7ec48dbc368deb04b54b)\n\n [![](//external-content.duckduckgo.com/ip3/basekv.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fbasekv.com%2Farticles%2Fredisgraph%2Ddeprecated%2Dnow%2Dwhat&rut=136ffcb208bf81ea46214aedfcf8e7c0a5a31430e32b7ec48dbc368deb04b54b)[basekv.com/articles/redisgraph-deprecated-now-what](//duckduckgo.com/l/?uddg=https%3A%2F%2Fbasekv.com%2Farticles%2Fredisgraph%2Ddeprecated%2Dnow%2Dwhat&rut=136ffcb208bf81ea46214aedfcf8e7c0a5a31430e32b7ec48dbc368deb04b54b)     2026-02-28T00:00:00.0000000\n\n[Yes, it is official: Redis announced **Line truncated
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+{"type":"step_start","timestamp":1788950746624,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c615fe001GMjxubDhc","messageID":"msg_g001a085c5faf1001NFtYmOK3d","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","snapshot":"30367cf315b844c3a0b37e7a9218ad0346598728","type":"step-start"}}
+{"type":"text","timestamp":1788950789490,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c6bd34001YfoYkLmEL","messageID":"msg_g001a085c5faf1001NFtYmOK3d","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"text","text":"All five discovery queries returned real SERPs — strong candidate pool across all four named candidates. Now I select sources for reading (one or more per hypothesis, balanced classes) and fetch them in parallel. GitHub repos go via `raw.githubusercontent.com` per established technique; blogs/docs via direct webfetch.","time":{"start":1788950789428,"end":1788950789487}}}
+{"type":"tool_use","timestamp":1788950789728,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"webfetch","callID":"call_49940e78c52044228f191e2a","state":{"status":"completed","input":{"format":"markdown","url":"https://thedataquarry.com/blog/from-kuzu-to-ladybug/"},"output":"From Kuzu to Ladybug: The embedded graph ecosystem powers onward • The Data Quarry       \n\n[The Data Quarry](/)\n\n[Archive](/archive) [Projects](/projects) [About](/about)\n\n[Search](/search \"Search\")\n\nDark Theme Menu\n\n[\n\nBack\n\n](/archive)\n\n## TABLE OF CONTENTS\n\n-   [Dataset: Who Mentored the Most Nobel Laureates?](#dataset-who-mentored-the-most-nobel-laureates)\n    \n-   [Preprocessing the Data](#preprocessing-the-data)\n    \n-   [Loading into Ladybug](#loading-into-ladybug)\n    \n-   [Preparing the Schema for Algorithm Results](#preparing-the-schema-for-algorithm-results)\n    \n-   [Running Graph Algorithms with Icebug](#running-graph-algorithms-with-icebug)\n    \n-   [What the Graph Tells Us](#what-the-graph-tells-us)\n    \n-   [The Bigger Picture: Ladybug Memory](#the-bigger-picture-ladybug-memory)\n    \n-   [Get Involved](#get-involved)\n    \n\nApr 11, 2026\n\n10 min read\n\n[ladybug](/tags/ladybug) /\n\n[kuzu](/tags/kuzu) /\n\n[graph](/tags/graph)\n\n# From Kuzu to Ladybug: The embedded graph ecosystem powers onward\n\n> A walkthrough of building a graph algorithm workflow with Ladybug and Icebug, and an intro to the vision of Ladybug Memory\n\nIf you’ve followed any of my work for the past couple of years, you’ll know I used to work at Kuzu, where we were building an embedded graph database. My work at Kuzu was all about helping users figure out how to transform and query their data as a graph, experimenting with how to define graph data models and relationships for different domains, how to bring the power of Cypher to developers who didn’t want to spin up a server or pay for a proprietary tool just to run traversal queries.\n\nIn September 2025, Kuzu got archived, and the codebase went quiet. But the ideas were still relevant. The graph community still highly valued a permissively licensed, embedded graph storage and query engine that supported Cypher.\n\nThat’s where LadybugDB comes in. It’s a fork of Kuzu, maintained by the team at [Ladybug Memory ⤴](https://ladybugmem.ai/), but with a slightly different goal. Kuzu was built primarily as a standalone, embedded graph database. Ladybug wants to be a **graph lakehouse** — interoperating with DuckDB’s storage layer, reading and writing Arrow/Parquet, connecting to object stores. The same columnar foundation, but opened up to the broader ecosystem.\n\nOver the past few months, I’ve been in close discussions with [Arun Sharma ⤴](https://x.com/arundsharma), lead maintainer of LadybugDB. Having explored what his vision looks like in practice, I wanted to share a small project that demonstrates at least a part of the Ladybug’s vision: running fast graph algorithms natively on top of columnar graph storage.\n\nTowards the end of this post, we’ll lead into the bigger picture and what this all means for folks working with graphs.\n\nNote on the nomenclature\n\nLadybugDB refers to the database itself, while [Ladybug Memory ⤴](https://ladybugmem.ai/) refers to the collection of projects that are building towards graph-based continual learning for agents. When I say “Ladybug” in this post, I’m referring to the database.\n\n## Dataset: Who Mentored the Most Nobel Laureates?[#](#dataset-who-mentored-the-most-nobel-laureates)\n\nThe dataset we’ll be working with (see [the repo ⤴](https://github.com/prrao87/ladybug-intro) if you want to follow along) is a mentorship network of Nobel laureates, containing thousands of records that trace the academic lineages of prize winners across Physics, Chemistry, and Medicine.\n\nIt turns out that research has shown Nobel Prize committees don’t just reward isolated genius. They reward people who are already in the right networks, having received mentorship from the right teachers, who were part of the *just the right* intellectual institutions. This makes sense when you learn from the data that Niels Bohr mentored *ten* Nobel laureates in Physics. Or that J.J. Thomson, discoverer of the electron, mentored *eleven*? These aren’t just names on a list — they’re nodes in a network of knowledge transmission that spans more than a century.\n\nThe data comes in JSON format, structured as parent-child relationships. Each record has a “child” (the mentee) and one or two “parents” (the mentors). Some of those children are laureates with prize categories and years attached. Others are scholars — people who never won a Nobel but who mentored someone who did, or who mentored someone who mentored someone who did.\n\nThis data is naturally analyzed as a graph. You could flatten it into a table and run SQL queries with traditional joins, but you’d lose its inherenLine truncated
+{"type":"tool_use","timestamp":1788950789730,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"webfetch","callID":"call_0059f8547b1c42128709cfb1","state":{"status":"completed","input":{"format":"markdown","url":"https://raw.githubusercontent.com/LadybugDB/ladybug/main/README.md"},"output":"<div align=\"center\">\n  <picture>\n    <!-- <source srcset=\"https://ladybugdb.com/img/lbug-logo-dark.png\" media=\"(prefers-color-scheme: dark)\"> -->\n    <img src=\"https://ladybugdb.com/logo.png\" height=\"100\" alt=\"Ladybug Logo\">\n  </picture>\n</div>\n\n<br>\n\n<p align=\"center\">\n  <a href=\"https://github.com/LadybugDB/ladybug/actions\">\n    <img src=\"https://github.com/LadybugDB/ladybug/actions/workflows/ci-workflow.yml/badge.svg?branch=master\" alt=\"Github Actions Badge\"></a>\n  <a href=\"https://deepwiki.com/LadybugDB/ladybug\"><img src=\"https://deepwiki.com/badge.svg\" alt=\"Ask DeepWiki\"></a>\n  <a href=\"https://discord.com/invite/hXyHmvW3Vy\">\n    <img src=\"https://img.shields.io/discord/1162999022819225631?logo=discord\" alt=\"discord\" /></a>\n  <a href=\"https://twitter.com/lbugdb\">\n    <img src=\"https://img.shields.io/badge/follow-@lbugdb-1DA1F2?logo=twitter\" alt=\"twitter\"></a>\n</p>\n\n# Ladybug\nLadybug is an embedded graph database built for query speed and scalability. Ladybug is optimized for handling complex analytical workloads\non very large databases and provides a set of retrieval features, such as a full text search and vector indices. Our core feature set includes:\n\n- Flexible Property Graph Data Model and Cypher query language\n- Embeddable, serverless integration into applications\n- Native full text search and vector index\n- Columnar disk-based storage\n- Columnar sparse row-based (CSR) adjacency list/join indices\n- Vectorized and factorized query processor\n- Novel and very fast join algorithms\n- Multi-core query parallelism\n- Serializable ACID transactions\n- Wasm (WebAssembly) bindings for fast, secure execution in the browser\n\nLadybug is being developed by [LadybugDB Developers](https://github.com/LadybugDB) and\nis available under a permissive license. So try it out and help us make it better! We welcome your feedback and feature requests.\n\nThe database was formerly known as [Kuzu](https://github.com/kuzudb/kuzu).\n\n## Installation\n\n| Language | Installation                                                           |\n| -------- |------------------------------------------------------------------------|\n| Python   | `pip install ladybug`                                             |\n| NodeJS   | `npm install @ladybugdb/core`                                            |\n| Rust     | `cargo add lbug`                                                       |\n| Go       | `go get github.com/LadybugDB/go-ladybug`                                     |\n| Swift    | [lbug-swift](https://github.com/LadybugDB/swift-ladybug)                     |\n| Java     | [Maven Central](https://central.sonatype.com/artifact/com.ladybugdb/lbug) |\n| C/C++    | [precompiled binaries](https://github.com/LadybugDB/ladybug/releases/latest) |\n| CLI      | [precompiled binaries](https://github.com/LadybugDB/ladybug/releases/latest) |\n\nTo learn more about installation, see our [Installation](https://docs.ladybugdb.com/installation) page.\n\n## Getting Started\n\nRefer to our [Getting Started](https://docs.ladybugdb.com/get-started/) page for your first example.\n\n## Build from Source\n\nYou can build from source using the instructions provided in the [developer guide](https://docs.ladybugdb.com/developer-guide/).\n\n## Contributing\nWe welcome contributions to Ladybug. If you are interested in contributing to Ladybug, please read our [Contributing Guide](CONTRIBUTING.md).\n\n## License\nBy contributing to Ladybug, you agree that your contributions will be licensed under the [MIT License](LICENSE).\n\n## Contact\nYou can contact us at [social@ladybugdb.com](mailto:social@ladybugdb.com) or [join our Discord community](https://discord.com/invite/hXyHmvW3Vy).\n","metadata":{"truncated":false},"title":"https://raw.githubusercontent.com/LadybugDB/ladybug/main/README.md (text/plain; charset=utf-8)","time":{"start":1788950789492,"end":1788950789729}},"id":"prt_g001a085c6bd4c001KoBmAaQFw","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","messageID":"msg_g001a085c5faf1001NFtYmOK3d"}}
+{"type":"tool_use","timestamp":1788950789784,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"webfetch","callID":"call_437670cd685a4d1cbcab2420","state":{"status":"error","input":{"format":"markdown","url":"https://raw.githubusercontent.com/FalkorDB/benchmark/master/README.md"},"error":"StatusCode: non 2xx status code (404 GET https://raw.githubusercontent.com/FalkorDB/benchmark/master/README.md)","time":{"start":1788950789490,"end":1788950789783}},"id":"prt_g001a085c6bd4a002TMBN9CVGe","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","messageID":"msg_g001a085c5faf1001NFtYmOK3d"}}
+{"type":"tool_use","timestamp":1788950789995,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"webfetch","callID":"call_0efb3e3111f94ca5839a9d89","state":{"status":"completed","input":{"format":"markdown","url":"https://raw.githubusercontent.com/getzep/graphiti/main/README.md"},"output":"<p align=\"center\">\n  <a href=\"https://www.getzep.com/\">\n    <img src=\"https://github.com/user-attachments/assets/119c5682-9654-4257-8922-56b7cb8ffd73\" width=\"150\" alt=\"Zep Logo\">\n  </a>\n</p>\n\n<h1 align=\"center\">\nGraphiti\n</h1>\n<h2 align=\"center\">A Framework for Building Temporal Knowledge Graphs</h2>\n\n<div align=\"center\">\n\n[![Lint](https://github.com/getzep/Graphiti/actions/workflows/lint.yml/badge.svg?style=flat)](https://github.com/getzep/Graphiti/actions/workflows/lint.yml)\n[![Unit Tests](https://github.com/getzep/Graphiti/actions/workflows/unit_tests.yml/badge.svg)](https://github.com/getzep/Graphiti/actions/workflows/unit_tests.yml)\n[![MyPy Check](https://github.com/getzep/Graphiti/actions/workflows/typecheck.yml/badge.svg)](https://github.com/getzep/Graphiti/actions/workflows/typecheck.yml)\n\n[![GitHub Repo stars](https://img.shields.io/github/stars/getzep/graphiti)](https://github.com/getzep/graphiti/stargazers)\n[![arXiv](https://img.shields.io/badge/arXiv-2501.13956-b31b1b.svg?style=flat)](https://arxiv.org/abs/2501.13956)\n[![Release](https://img.shields.io/github/v/release/getzep/graphiti?style=flat&label=Release&color=limegreen)](https://github.com/getzep/graphiti/releases)\n\n</div>\n<div align=\"center\">\n\n<a href=\"https://trendshift.io/repositories/12986\" target=\"_blank\"><img src=\"https://trendshift.io/api/badge/repositories/12986\" alt=\"getzep%2Fgraphiti | Trendshift\" style=\"width: 250px; height: 55px;\" width=\"250\" height=\"55\"/></a>\n\n</div>\n\n> [!NOTE]\n> **We're Hiring!** Build context graphs that power reliable, personalized, fast production AI agents.\n> Come build with us — we're hiring Engineers and Developer Relations folks. [View open roles](https://www.getzep.com/careers/).\n\n⭐ *Help us reach more developers and grow the Graphiti community. Star this repo!*\n\n&nbsp;\n\nGraphiti is a framework for building and querying temporal context graphs for AI agents. Unlike static knowledge graphs,\nGraphiti's context graphs track how facts change over time, maintain provenance to source data, and support both\nprescribed and learned ontology — making them purpose-built for agents operating on evolving, real-world data.\n\nUnlike traditional retrieval-augmented generation (RAG) methods, Graphiti continuously integrates user interactions,\nstructured and unstructured enterprise data, and external information into a coherent, queryable graph. The framework\nsupports incremental data updates, efficient retrieval, and precise historical queries without requiring complete graph\nrecomputation, making it suitable for developing interactive, context-aware AI applications.\n\nUse Graphiti to:\n\n- Build temporal knowledge graphs that evolve with every interaction — tracking what's true now and what was true before.\n- Represent rich, structured context instead of flat document chunks or raw event streams.\n- Query across time, meaning, and relationships with hybrid retrieval (semantic + keyword + graph traversal).\n\n&nbsp;\n\n<p align=\"center\">\n    <img src=\"images/graphiti-graph-intro.gif\" alt=\"Graphiti temporal walkthrough\" width=\"700px\">\n</p>\n\n&nbsp;\n\n## What is a Context Graph?\n\nA **context graph** is a temporal graph of entities, relationships, and facts — like *\"Kendra loves Adidas shoes (as of\nMarch 2026).\"* Unlike traditional knowledge graphs, each fact in a context graph has a validity window: when it became\ntrue, and when (if ever) it was superseded. Entities evolve over time with updated summaries. Everything traces back to\n**episodes** — the raw data that produced it.\n\nWhat makes Graphiti unique is its ability to autonomously build context graphs from unstructured and structured data,\nhandling changing relationships while preserving full temporal history.\n\nA context graph contains:\n\n| Component | What it stores |\n|-----------|---------------|\n| **Entities** (nodes) | People, products, policies, concepts — with summaries that evolve over time |\n| **Facts / Relationships** (edges) | Triplets (Entity → Relationship → Entity) with temporal validity windows |\n| **Episodes** (provenance) | Raw data as ingested — the ground truth stream. Every derived fact traces back here |\n| **Custom Types** (ontology) | Developer-defined entity and edge types via Pydantic models |\n\n## Graphiti and Zep\n\nGraphiti is the open-source framework for building temporal knowledge graphs at the core of\n[Zep's](https://www.getzep.com) context infrastructure. Zep manages context graphs at scale, providing\ngoverned, low-latency context retrieval and assembly for production deployments.\n\nUnder the hood, Line truncated
+{"type":"tool_use","timestamp":1788950790161,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"webfetch","callID":"call_0b2506b0c1674e979fa9f494","state":{"status":"completed","input":{"format":"markdown","url":"https://raw.githubusercontent.com/DIGITAL-FABRIC-AI/neo4j-temporal-graph/master/NEP-001.md"},"output":"# NEP-001: Native Bitemporal Graph Support\n**Type:** Language Enhancement + Kernel Feature\n**Author:** Ashley Dunfield\n**Status:** Draft — RFC\n**Date:** 2026-03-18\n**Reference Implementation:** https://github.com/DIGITAL-FABRIC-AI/neo4j-temporal-graph\n**Discussion:** *(to be filed at https://github.com/neo4j/neo4j/discussions)*\n\n---\n\n## Abstract\n\nThis proposal introduces native bitemporal graph support to Neo4j — the ability to\nquery the graph as it existed at any point in time using a clean Cypher syntax\nextension. Two time dimensions are made first-class: **valid time** (when a fact was\ntrue in the world) and **transaction time** (when it was recorded in the database).\nThe proposed syntax is:\n\n```cypher\nMATCH (w:Well)-[r:OWNED_BY]->(c:Company)\nAS OF date('2024-06-15')\nRETURN w.name, c.name\n```\n\nThis proposal is motivated by production experience with 3.1M+ temporally-annotated\nrelationships across a complex regulatory and operational graph. Every temporal query\nin that system is today expressed with verbose manual filtering that is fragile,\nhard to optimise, and easy to get wrong. Native support would eliminate that entire\ncategory of application complexity.\n\n---\n\n## 1. Motivation\n\n### 1.1 The Temporal Graph is Universal\n\nNearly every domain that benefits from a graph database also has temporal semantics:\n\n| Domain | Temporal fact |\n|--------|--------------|\n| Corporate ownership | \"Who owned this asset between 2018 and 2022?\" |\n| Regulatory compliance | \"What rules applied to this facility in Q3 2024?\" |\n| Supply chain | \"Which supplier was contracted at the time of this incident?\" |\n| Org charts | \"Who was this person's manager on the date the decision was made?\" |\n| Medical records | \"What medications was the patient on at admission?\" |\n| Financial | \"What was the firm's capital structure at close on this date?\" |\n\nIn every case, the graph has the right structure for the query — the challenge is\npurely about time. Relationships change: they are created, modified, and ended.\nThe naive graph models a snapshot of the present. What users need is access to\nthe full temporal history.\n\n### 1.2 The Current State Is Broken\n\nToday, teams work around missing native temporal support by storing `valid_from`\nand `valid_to` (or `effective_date` / `end_date`) directly on relationship\nproperties. This works, but it has serious problems.\n\n**The query pattern is verbose and error-prone:**\n\n```cypher\n-- \"Who owned this well on June 15, 2024?\"\n-- Current approach — every developer writes this differently\nMATCH (w:Well {wellId: $id})-[r:OWNED_BY]->(c:Company)\nWHERE (r.effective_date IS NULL OR r.effective_date <= date('2024-06-15'))\n  AND (r.end_date IS NULL OR r.end_date >= date('2024-06-15'))\nRETURN c.name\n```\n\nCommon mistakes include: forgetting to handle `NULL` as \"open-ended\", using `<`\ninstead of `<=`, inconsistent property naming across relationship types, incorrect\nhandling of the half-open interval `[effective_date, end_date)`, and failing to\naccount for relationships that predate any recorded `effective_date`.\n\n**It doesn't compose:**\n\n```cypher\n-- \"Trace ownership and regulatory authority as of a given date\"\n-- Current: every hop needs its own temporal filter, duplicated everywhere\nMATCH (w:Well {wellId: $id})\n      -[r1:OWNED_BY]->(c:Company)\n      -[r2:SUBJECT_TO]->(a:Authority)\nWHERE (r1.effective_date IS NULL OR r1.effective_date <= $asOf)\n  AND (r1.end_date IS NULL OR r1.end_date >= $asOf)\n  AND (r2.effective_date IS NULL OR r2.effective_date <= $asOf)\n  AND (r2.end_date IS NULL OR r2.end_date >= $asOf)\nRETURN c.name, a.name\n```\n\nAs path depth increases, the WHERE clause grows linearly. At depth 4 or 5 (common\nin regulatory traversals), the query becomes unmaintainable.\n\n**It cannot be optimised:**\n\nThe planner has no way to know that `r.effective_date <= date('2024-06-15')` is\na temporal filter — it looks like any other property predicate. A native temporal\nlayer would allow the planner to choose appropriate physical operators (temporal\nindex scans, period overlap joins) that are fundamentally more efficient.\n\n**It has no transaction time:**\n\nThe property-based approach stores only valid time (when something was true in the\nworld). Transaction time (when the database recorded it) is lost unless the\napplication explicitly adds an `_recorded_at` property to every write. Recovering\n\"what did the database know at 9am on this date\" is impossible without this.\n\n### 1.3 Evidence from Production\n\nThe following numbers come from a production Neo4Line truncated
+{"type":"tool_use","timestamp":1788950790707,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"webfetch","callID":"call_f5c705160ec54dce901429ca","state":{"status":"completed","input":{"format":"markdown","url":"https://aimultiple.com/graph-databases"},"output":"Graph Database Benchmark: Neo4j vs FalkorDB vs Memgraph  \n\n[![AIMultiple](/images/logo-2025.svg)![AIMultiple](/images/logo-2025-white.svg)](https://aimultiple.com)\n\nAgentic AI\n\nCATEGORIES\n\nModel Context ProtocolAI AgentsAI in IndustriesAI HardwareGenAI ApplicationsAI ModelsAI Foundations[Browse Categories](https://aimultiple.com/ai)\n\n[Browser MCP](https://aimultiple.com/browser-mcp)[MCP Gateway](https://aimultiple.com/mcp-gateway)[Code Execution with MCP](https://aimultiple.com/code-execution-with-mcp)\n\nCybersecurity\n\nCATEGORIES\n\nData SecurityIdentity & Access ManagementSecurity ToolsThreat Detection and Response (TDR)Network Security[Browse 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Security\n\nData\n\nWeb ProxiesWeb Data ScrapingData CollectionData ScienceSynthetic Data\n\nEnterprise Software\n\nE-CommerceWorkload AutomationIT AutomationProcess ImprovementRMMManaged File TransferHelpdesk Software\n\n[Services](https://aimultiple.com/services)\n\n[Premium](https://aimultiple.com/premium)  \n\nBack\n\nModel Context Protocol\n\n[Browser MCP](https://aimultiple.com/browser-mcp)[MCP Gateway](https://aimultiple.com/mcp-gateway)[Code Execution with MCP](https://aimultiple.com/code-execution-with-mcp)\n\nAI Agents\n\n[AI Agent Performance](https://aimultiple.com/ai-agent-performance)[AI Agents in Marketing](https://aimultiple.com/ai-agents-in-marketing)[Agentic CRM](https://aimultiple.com/agentic-crm)[AI Lead Generation](https://aimultiple.com/ai-lead-generation)[AI Agents](https://aimultiple.com/ai-agents)[Open Source AI Agents](https://aimultiple.com/open-source-ai-agents)[Building AI Agents](https://aimultiple.com/building-ai-agents)[See 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All](https://aimultiple.com/ai-hardware)\n\nGenAI Applications\n\n[Generative AI Applications](https://aimultiple.com/generative-ai-applications)[GLine truncated
+{"type":"tool_use","timestamp":1788950791261,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"webfetch","callID":"call_001fc0054a96423999356501","state":{"status":"completed","input":{"format":"markdown","url":"https://www.falkordb.com/blog/graph-database-performance-benchmarks-falkordb-vs-neo4j/"},"output":"      FalkorDB vs Neo4j: Graph Database Performance Benchmarks                                                                                             \n\n      \n\n[Skip to content](#content)\n\n[![FalkorDB](data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw== \"FalkorDB\")\n\n![FalkorDB](https://www.falkordb.com/wp-content/uploads/2024/06/logo-dark.svg \"FalkorDB\")\n\n](https://www.falkordb.com/)\n\nSolutions\n\n[QueryWeaver - Text2SQL](https://www.falkordb.com/queryweaver-text-to-sql/) [GraphRAG SDK](https://www.falkordb.com/graphrag-sdk/) [Agentic AI Use Cases](https://www.falkordb.com/use-cases/) [Security Graph](https://www.falkordb.com/cyber-security/)\n\nWhy FalkorDB\n\n[FalkorDB vs. Neo4j](https://www.falkordb.com/falkordb-vs-neo4j/) [FalkorDB vs. AWS Neptune](https://www.falkordb.com/falkordb-vs-aws-neptune/) [FalkorDB vs. Vector Databases](https://www.falkordb.com/blog/vector-database-vs-graph-database/) [Latest Benchmarks](https://benchmark.falkordb.com/) [Company](https://www.falkordb.com/company/)\n\nDevelopers\n\n[Documentation](https://docs.falkordb.com/) [Community Projects](https://www.falkordb.com/community-projects/) [Graph Size Calculator](https://www.falkordb.com/graph-database-graph-size-calculator/)\n\nContact Us\n\n[Book a Demo](https://www.falkordb.com/get-a-demo/) [Get in touch](https://www.falkordb.com/contact-us/) [Events & Workshops](https://luma.com/graph-rag-talks)\n\n[Pricing](https://www.falkordb.com/plans/) [Blog](https://www.falkordb.com/blog/)\n\n[Discord](https://discord.com/invite/Y2mMT9VdMy) [3.4k](https://github.com/FalkorDB/falkordb)\n\n[Log in](https://app.falkordb.cloud/login) [Start Free](https://app.falkordb.cloud/signup) Open menu\n\nMenu\n\nClose menu\n\n[Start Free](https://app.falkordb.cloud/signup)\n\n[Discord](https://discord.com/invite/Y2mMT9VdMy) [3.4k](https://github.com/FalkorDB/falkordb)\n\nSolutions\n\n[Text2SQL](https://app.queryweaver.ai) [GraphRAG SDK](https://www.falkordb.com/graphrag-sdk/) [Agentic AI Use Cases](https://www.falkordb.com/use-cases/) [Security Graph](https://www.falkordb.com/cyber-security/)\n\nWhy FalkorDB\n\n[FalkorDB vs. Neo4j](https://www.falkordb.com/falkordb-vs-neo4j/) [FalkorDB vs. AWS Neptune](https://www.falkordb.com/falkordb-vs-aws-neptune/) [FalkorDB vs. Vector Databases](https://www.falkordb.com/blog/vector-database-vs-graph-database/) [Latest Benchmarks](https://benchmark.falkordb.com/) [Company](https://www.falkordb.com/company/)\n\nDevelopers\n\n[Documentation](https://docs.falkordb.com/) [Community Projects](https://www.falkordb.com/community-projects/) [Graph Size Calculator](https://www.falkordb.com/graph-database-graph-size-calculator/)\n\nContact Us\n\n[Book a Demo](https://www.falkordb.com/get-a-demo/) [Get in touch](https://www.falkordb.com/contact-us/) [Events & Workshops](https://luma.com/graph-rag-talks)\n\n[Pricing](https://www.falkordb.com/plans/) [Blog](https://www.falkordb.com/blog/)\n\n \n\n[Back to all posts](https://www.falkordb.com/blog/)\n\n# FalkorDB vs Neo4j: Graph Database Performance Benchmarks\n\n-   ![Avi Avni](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB4AAAAeAQMAAAAB/jzhAAAABlBMVEUAAAD///+l2Z/dAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAAxJREFUCNdjYBiMAAAAlgABYhYN0gAAAABJRU5ErkJggg==)\n    \n    ![Avi Avni](https://secure.gravatar.com/avatar/859eae7abd15bce12de6f9f2f106936a1b7641f23a17860903d152138a983a52?s=30&d=mm&r=g)\n    \n    [Avi Avni](https://www.falkordb.com/author/aviavni/ \"Avi Avni\")\n    \n\n-   Date Published: December 2, 2024\n-   Date Updated: August 23, 2026\n\n![FalkorDB-versus-neo4j-performance-benchmarks-results](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAA5gAAAHCAQAAAACiOVuoAAAAAnRSTlMAAHaTzTgAAABJSURBVHja7cExAQAAAMKg9U9tCU+gAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADgb8voAAGq4DOeAAAAAElFTkSuQmCC \"FalkorDB versus neo4j benchmark results\")\n\n![FalkorDB-versus-neo4j-performance-benchmarks-results](https://www.falkordb.com/wp-content/uploads/elementor/thumbs/FalkorDB-versus-neo4j-benchmark-results-rqmjpqu1i6rt2jmfxcev0sp6tn41e8oiba2f5qpifo.png \"FalkorDB versus neo4j benchmark results\")\n\nNew [performance benchmarks](https://benchmark.falkordb.com/) results demonstrate FalkorDB’s significant performance advantages in aggregate expansion operations [compared to Neo4j](https://www.falkordb.com/blog/falkordb-vs-neo4j-for-ai-applications/). The data reveals consistent sub-140ms response times at p99, while Neo4j experiences multi-second latencies under similar conditions.\n\n-   The benchmark is composed of 11 templated queries, which represent a general usage of classic graphLine truncated
+{"type":"tool_use","timestamp":1788950795944,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"webfetch","callID":"call_86528ea655b94ddd853ac3d5","state":{"status":"completed","input":{"format":"markdown","url":"https://neo4j.com/docs/cypher-manual/current/values-and-types/temporal/"},"output":"---\ndescription: Cypher has built-in support for handling temporal values, and the underlying database supports storing these temporal values as properties on nodes and relationships.\ntitle: Temporal values - Cypher Manual\nimage: https://dist.neo4j.com/wp-content/uploads/20240513110808/Neo4j-logo-social-preview.png\n---\n\n \n\n[Skip to content](#skip-to-content \"Skip to content\") \n\nCypher Manual \n\nProduct Version Version 25 Version 5 Version 4.4 \n\n**Is this page helpful?**\n\n[](https://neo4j.com/docs) \n\n[Raise an issue](https://github.com/neo4j/docs-cypher/issues/new/?title=Docs%20Feedback%20modules/ROOT/pages/values-and-types/temporal.adoc%20%28ref:%20cypher-25%29&body=%3E%20Do%20not%20include%20confidential%20information,%20personal%20data,%20sensitive%20data,%20or%20other%20regulated%20data.)\n\n# Temporal values\n\nCypher® has built-in support for handling temporal values, which can be stored as properties on nodes and relationships in Neo4j databases. This section will discuss how Cypher handles time zones, before exploring temporal values in more detail.\n\n|  | Refer to [Temporal functions - instant types](https://neo4j.com/docs/cypher-manual/current/functions/temporal/) for information regarding temporal _functions_ allowing for the creation and manipulation of temporal values. Refer to [Temporal operators](https://neo4j.com/docs/cypher-manual/current/expressions/temporal-operators/) for information regarding temporal _operators_. Refer to [Equality, ordering, and comparison of value types](https://neo4j.com/docs/cypher-manual/current/values-and-types/ordering-equality-comparison/) for information regarding the comparison and ordering of temporal values. |\n|  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n\n## [](#%5Ftemporal%5Fvalue%5Ftypes)Temporal value types\n\nThe following table lists the temporal value types and their supported components:\n\n| Type           | Date support | Time support | Time zone support |\n| -------------- | ------------ | ------------ | ----------------- |\n| DATE           |              |              |                   |\n| LOCAL TIME     |              |              |                   |\n| ZONED TIME     |              |              |                   |\n| LOCAL DATETIME |              |              |                   |\n| ZONED DATETIME |              |              |                   |\n| DURATION       | \\-           | \\-           | \\-                |\n\n`DATE`, `LOCAL TIME`, `ZONED TIME`, `LOCAL DATETIME`, and `ZONED DATETIME` are _temporal instant_ types. A temporal instant value expresses a point in time with varying degrees of precision.\n\nBy contrast, `DURATION` is not a temporal instant type. A `DURATION` represents a temporal amount, capturing the difference in time between two instants, and can be negative. `DURATION` captures the amount of time between two instants, it does not capture a start time and end time.\n\n## [](#cypher-temporal-timezones)Time zones\n\nTime zones are represented either as an offset from UTC, or as a logical identifier of a _named time zone_ (these are based on the [IANA time zone database](https://www.iana.org/time-zones)). In either case, the time is stored as UTC internally, and the time zone offset is only applied when the time is presented. This means that temporal instants can be ordered without taking time zone into account. If, however, two times are identical in UTC, then they are ordered by timezone.\n\nWhen creating a time using a named time zone, the offset from UTC is computed from the rules in the time zone database to create a time instant in UTC, and to ensure the named time zone is a valid one.\n\nIt is possible for time zone rules to change in the IANA time zone database. For example, there could be alterations to the rules for daylight savings time in a certain area. If this occurs after the creation of a temporal instant, the presented time could differ from the originally-entered time, insofar as the local timezone is concerned. However, the absolute time in UTC would remain the same.\n\nThere are three ways oLine truncated
+{"type":"tool_use","timestamp":1788950797239,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"webfetch","callID":"call_7000c1e0b3664fed845f72b9","state":{"status":"completed","input":{"format":"markdown","url":"https://raw.githubusercontent.com/FalkorDB/FalkorDB/master/README.md"},"output":"<div align=\"center\">\n  <img width=\"100\" height=\"100\" alt=\"FalkorDB Logo Square B\" src=\"https://github.com/user-attachments/assets/ec67e5e3-a060-405d-b229-1fe2badcf8ad\" />\n</div>\n<div align=\"center\">\n  <h1>FalkorDB</h1>\n  <h2>Ultra-fast, Multi-tenant Graph Database</h2>\n  <h3>Powering Generative AI, Agent Memory, Cloud Security, and Fraud Detection</h3>\n<a href=\"https://trendshift.io/repositories/14787\" target=\"_blank\" rel=\"noopener noreferrer\"><img src=\"https://trendshift.io/api/badge/repositories/14787\" alt=\"FalkorDB%2FFalkorDB | Trendshift\" style=\"width: 250px; height: 55px;\" width=\"250\" height=\"55\"/></a>\n</div>\n<div align=\"center\">\n  <a href=\"https://app.falkordb.cloud/signup\">\n    <img src=\"https://img.shields.io/badge/Try%20Free-FalkorDB%20Cloud-FF8101?labelColor=FDE900&style=for-the-badge\" alt=\"Try Free\" />\n  </a><br>\n  <a href=\"https://discord.com/invite/TJ4SaPTptf\" rel=\"nofollow\">\n    <img src=\"https://img.shields.io/badge/Discord-%235865F2.svg?&logo=discord&logoColor=white\" alt=\"Discord\" />\n  </a>\n  <a href=\"https://hub.docker.com/r/falkordb/falkordb/\">\n    <img src=\"https://img.shields.io/docker/pulls/falkordb/falkordb?label=Docker\" alt=\"Dockerhub\" />\n  </a>\n  <a href=\"https://discord.gg/6M4QwDXn2w\">\n    <img src=\"https://img.shields.io/discord/1146782921294884966?style=flat-square\" alt=\"Discord\" />\n  </a>\n  <a href=\"https://codecov.io/gh/falkordb/falkordb\">\n    <img src=\"https://codecov.io/gh/falkordb/falkordb/graph/badge.svg?token=0G4HBEJMW0\" alt=\"codecov\" />\n  </a>\n  <a href=\"https://github.com/FalkorDB/FalkorDB/actions/workflows/build.yml\">\n    <img src=\"https://github.com/FalkorDB/FalkorDB/actions/workflows/build.yml/badge.svg?branch=master\" alt=\"Workflow\" />\n  </a>\n</div>\n\n<div align=\"center\">\n\n![FalkorDB GitHub Repo - Video - 640x365](https://github.com/user-attachments/assets/131867d4-fa2b-41f8-ac72-5c5f6eaf4e12)\n\n</div>\n\n## UNIQUE FEATURES\n\nOur goal is to build a high-performance Knowledge Graph tailored for Large Language Models (LLMs), prioritizing exceptionally low latency to ensure fast and efficient information delivery through our Graph Database.\n\n🆕 [FalkorDB](https://www.falkordb.com/) is the first **queryable [Property Graph](https://github.com/opencypher/openCypher/blob/master/docs/property-graph-model.adoc) database to leverage sparse matrices** for representing the [adjacency matrix](https://en.wikipedia.org/wiki/Adjacency_matrix) in graphs and [linear algebra](https://en.wikipedia.org/wiki/Adjacency_matrix) for querying.\n\n### Key Features\n\n* **Sparse Matrix Representation**: Utilizes sparse matrices to represent adjacency matrices, optimizing storage and performance.\n\n\n* **Linear Algebra Querying**: Employs linear algebra for query execution, enhancing computational efficiency.\n\n\n* **Property Graph Model Compliance**: Supports nodes and relationships with attributes, adhering to the Property Graph Model.\n\n\n* **OpenCypher Support:** Compatible with [OpenCypher](ttps://github.com/opencypher/openCypher/blob/master/docs/property-graph-model.adoc) query language, including proprietary extensions for advanced querying capabilities.\n\n>Explore FalkorDB in action by visiting the [Demos](https://github.com/FalkorDB/FalkorDB/tree/master/demo).\n\n## DOCUMENTATION\n\n[Official Docs](https://docs.falkordb.com/) | [Clients](https://docs.falkordb.com/clients.html) | [Commands](https://docs.falkordb.com/commands/) | 📊 [Latest Performance Benchmarks](https://benchmark.falkordb.com/)\n\n### Community and Support\n\n* **Discussions**: Join our community discussions on [GitHub Discussions](https://github.com/FalkorDB/FalkorDB/discussions) to ask questions, share ideas, and connect with other users.\n\n* **Contributing**: We welcome contributions! Please see our [Contributing Guide](https://github.com/FalkorDB/FalkorDB/blob/master/CONTRIBUTING.md) for more details.\n\n* **License**: This project is licensed under the Server Side Public License v1 (SSPLv1). See the [LICENSE](https://github.com/FalkorDB/FalkorDB/blob/master/LICENSE.txt) file for details.\n\n## GET STARTED\n\n### Step 1\n\nTo quickly try out FalkorDB, launch an instance using docker:\n\n```\ndocker run -p 6379:6379 -p 3000:3000 -it --rm -v ./data:/var/lib/falkordb/data falkordb/falkordb\n```\n\n### Step 2\n\nThen, open your browser and navigate to `http://localhost:3000`.\n\n\nYou can also interact with FalkorDB using any of the supported [Client Libraries](https://docs.falkordb.com/clients.html)\n\n### MotoGP League Example\n\nIn this example, we'll use the [FalkorDB Python client](https://pLine truncated
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+{"type":"step_start","timestamp":1788950806342,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c6ff43001ilKNynqLh","messageID":"msg_g001a085c6dc12001FQMZcUQ77","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","snapshot":"0e8019ded0b0743a0e564e0ba88bb923be06cb4d","type":"step-start"}}
+{"type":"text","timestamp":1788950836856,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c76d5f001T967TPrVY","messageID":"msg_g001a085c6dc12001FQMZcUQ77","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"text","text":"All reads succeeded except O2 (`FalkorDB/benchmark` README — 404 on `master`; wrong branch guess). Two follow-ups: retry O2 with `main`, and fetch `dbdb.io/db/ladybugdb` for third-party maturity evidence on LadybugDB's experimental status.","time":{"start":1788950834527,"end":1788950836854}}}
+{"type":"tool_use","timestamp":1788950837067,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"webfetch","callID":"call_cae9d56950b14052bf4978ad","state":{"status":"error","input":{"format":"markdown","url":"https://raw.githubusercontent.com/FalkorDB/benchmark/main/README.md"},"error":"StatusCode: non 2xx status code (404 GET https://raw.githubusercontent.com/FalkorDB/benchmark/main/README.md)","time":{"start":1788950836855,"end":1788950837066}},"id":"prt_g001a085c77645001weivEWcFB","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","messageID":"msg_g001a085c6dc12001FQMZcUQ77"}}
+{"type":"tool_use","timestamp":1788950837305,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"webfetch","callID":"call_7c6b0e86fb934a4dbe68eb3c","state":{"status":"completed","input":{"format":"markdown","url":"https://dbdb.io/db/ladybugdb"},"output":" LadybugDB · Database of Databases             \n\nDBDB.io The Encyclopedia of Database Systems · Est. 2017\n\n[Login](/login/)\n\n[Database of Databases](/)\n\n[Browse](/browse) [Leaderboards](/stats) [Recent](/recent) [About](/about)\n\n[Database Entry](/db/ladybugdb)\n\n# LadybugDB\n\n---\n\n[AI-Assisted](/browse?tag=ai-assisted \"View 'AI-Assisted' Systems\") [Forked Code](/browse?tag=forked-code \"View 'Forked Code' Systems\") [Revival Project](/browse?tag=revival \"View 'Revival Project' Systems\")\n\nLadybugDB is a embedded graph-oriented DBMS.\n\n [![LadybugDB Logo](/media/logos/ladybugdb.svg)](/db/ladybugdb/logos \"View All Logos for LadybugDB\")[Logo Versions](/db/ladybugdb/logos \"View All Logos for LadybugDB\")\n\nWebsite\n\n[https://ladybugdb.com](https://ladybugdb.com)[\\[01\\]](#citation1 \"View Citation\")\n\nSource Code\n\n[https://github.com/LadybugDB/ladybug](https://github.com/LadybugDB/ladybug)[\\[02\\]](#citation2 \"View Citation\") Accessed: Sep 6, 2026 Last Commit: Sep 5, 2026\n\nTech Docs\n\n[https://docs.ladybugdb.com](https://docs.ladybugdb.com)[\\[03\\]](#citation3 \"View Citation\")\n\nBlog\n\n[https://blog.ladybugdb.com](https://blog.ladybugdb.com)[\\[04\\]](#citation4 \"View Citation\")\n\nCountry of Origin\n\n[US](/browse?country=US \"View Systems from United States of America\")\n\nStart Year\n\n2025\n\nCoding Agents\n\n[Claude](/browse?agent=claude \"View Systems Using Claude\") [\\[06\\]](#citation6 \"View Citation\")\n\n[Copilot](/browse?agent=copilot \"View Systems Using Copilot\") [\\[07\\]](#citation7 \"View Citation\")\n\n[Cursor](/browse?agent=cursor \"View Systems Using Cursor\") [\\[08\\]](#citation8 \"View Citation\")\n\nProject Type\n\n[Open Source](/browse?project-type=open-source \"View Systems : Open Source\")\n\nWritten in\n\n[C++](/browse?programming-language=cplusplus \"View Systems Written In C++\")\n\nDerived From\n\n[Kuzu](/db/kuzu \"View Kuzu\")\n\nLicense\n\n[MIT License](/browse?license=mit \"View Systems That Use MIT License License\")\n\nTwitter\n\n[@lbugdb](https://twitter.com/lbugdb)[\\[05\\]](#citation5 \"View Citation\")\n\n [![LadybugDB Logo](/media/logos/ladybugdb.svg)](/db/ladybugdb/logos \"View All Logos for LadybugDB\")[Logo Versions](/db/ladybugdb/logos \"View All Logos for LadybugDB\")\n\nWebsite\n\n[https://ladybugdb.com](https://ladybugdb.com)[\\[01\\]](#citation1 \"View Citation\")\n\nSource Code\n\n[https://github.com/LadybugDB/ladybug](https://github.com/LadybugDB/ladybug)[\\[02\\]](#citation2 \"View Citation\") Accessed: Sep 6, 2026 Last Commit: Sep 5, 2026\n\nTech Docs\n\n[https://docs.ladybugdb.com](https://docs.ladybugdb.com)[\\[03\\]](#citation3 \"View Citation\")\n\nBlog\n\n[https://blog.ladybugdb.com](https://blog.ladybugdb.com)[\\[04\\]](#citation4 \"View Citation\")\n\nCountry of Origin\n\n[US](/browse?country=US \"View Systems from United States of America\")\n\nStart Year\n\n2025\n\nCoding Agents\n\n[Claude](/browse?agent=claude \"View Systems Using Claude\") [\\[06\\]](#citation6 \"View Citation\")\n\n[Copilot](/browse?agent=copilot \"View Systems Using Copilot\") [\\[07\\]](#citation7 \"View Citation\")\n\n[Cursor](/browse?agent=cursor \"View Systems Using Cursor\") [\\[08\\]](#citation8 \"View Citation\")\n\nProject Type\n\n[Open Source](/browse?project-type=open-source \"View Systems : Open Source\")\n\nWritten in\n\n[C++](/browse?programming-language=cplusplus \"View Systems Written In C++\")\n\nDerived From\n\n[Kuzu](/db/kuzu \"View Kuzu\")\n\nLicense\n\n[MIT License](/browse?license=mit \"View Systems That Use MIT License License\")\n\nTwitter\n\n[@lbugdb](https://twitter.com/lbugdb)[\\[05\\]](#citation5 \"View Citation\")\n\nPeople Also Viewed\n\n [![TonicDB](/media/logos/tonicdb.svg)TonicDB](/db/tonicdb \"TonicDB\")[ ![NornicDB](/media/logos/nornicdb.svg)NornicDB ](/db/nornicdb \"NornicDB\")[![Stoolap](/media/logos/stoolap.svg)Stoolap](/db/stoolap \"Stoolap\") [DI discodb](/db/discodb \"discodb\")\n\n[Database Entry](/db/ladybugdb)\n\n# LadybugDB\n\n---\n\n[AI-Assisted](/browse?tag=ai-assisted \"View 'AI-Assisted' Systems\") [Forked Code](/browse?tag=forked-code \"View 'Forked Code' Systems\") [Revival Project](/browse?tag=revival \"View 'Revival Project' Systems\")\n\nLadybugDB is a embedded graph-oriented DBMS.\n\n## History\n\n---\n\nThe project started in 2025 as a revival fork of Kuzu after its acquisition and closure by Apple.\n\n## Data Model\n\n---\n\n[Graph](/browse?data-model=graph \"View Other 'Graph' Systems\")\n\n## Query Interface\n\n---\n\n[Cypher](/browse?query-interface=cypher \"View Other 'Cypher' Systems\")\n\n## System Architecture\n\n---\n\n[Embedded](/browse?system-architecture=embedded \"View Other 'Embedded' SystemLine truncated
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+{"type":"step_start","timestamp":1788950852040,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c7b1c5001X5Db7IQA0","messageID":"msg_g001a085c77881001bBZQ7XjHx","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","snapshot":"c843a4748e7f22fef6a83ace562e8a9682d16c54","type":"step-start"}}
+{"type":"text","timestamp":1788950857347,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c7c2cc001wdnJF5gHP","messageID":"msg_g001a085c77881001bBZQ7XjHx","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"text","text":"O2's README isn't on either standard branch. One repair fetch: query the GitHub API for the repo's default branch before final classification.","time":{"start":1788950856396,"end":1788950857345}}}
+{"type":"tool_use","timestamp":1788950857666,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"webfetch","callID":"call_fb4cbd6576694a19a8e4f5ea","state":{"status":"completed","input":{"format":"text","url":"https://api.github.com/repos/FalkorDB/benchmark"},"output":"{\n  \"id\": 887799051,\n  \"node_id\": \"R_kgDONOq9Cw\",\n  \"name\": \"benchmark\",\n  \"full_name\": \"FalkorDB/benchmark\",\n  \"private\": false,\n  \"owner\": {\n    \"login\": \"FalkorDB\",\n    \"id\": 140048192,\n    \"node_id\": \"O_kgDOCFj3QA\",\n    \"avatar_url\": \"https://avatars.githubusercontent.com/u/140048192?v=4\",\n    \"gravatar_id\": \"\",\n    \"url\": \"https://api.github.com/users/FalkorDB\",\n    \"html_url\": \"https://github.com/FalkorDB\",\n    \"followers_url\": \"https://api.github.com/users/FalkorDB/followers\",\n    \"following_url\": \"https://api.github.com/users/FalkorDB/following{/other_user}\",\n    \"gists_url\": 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+{"type":"step_finish","timestamp":1788950857693,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c7c7c1001banr85KSg","reason":"tool-calls","snapshot":"bdbde353df3a687d7a3962ed28cc141d45a0ebc5","messageID":"msg_g001a085c77881001bBZQ7XjHx","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"step-finish","tokens":{"total":110371,"input":110165,"output":58,"reasoning":148,"cache":{"write":0,"read":0}},"cost":0}}
+{"type":"step_start","timestamp":1788950867271,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c7ed46001SlGcQApYl","messageID":"msg_g001a085c7c801001zv90Hr2IM","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","snapshot":"37acef5283c95e01605e553deba7a11b9169a8eb","type":"step-start"}}
+{"type":"text","timestamp":1788950951568,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c930bd001y0Z6UbnD4","messageID":"msg_g001a085c7c801001zv90Hr2IM","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"text","text":"All reads are complete and the evidence requirement is satisfied. Before writing the artifact, let me check how the prior round's artifact file handled the `StageCompleted` marker (inside JSON vs trailing line).","time":{"start":1788950950077,"end":1788950951565}}}
+{"type":"tool_use","timestamp":1788950951573,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"bash","callID":"call_79c8bd87f23b4b3a8ac77305","state":{"status":"completed","input":{"command":"tail -c 400 /mnt/workdrive/issue161-harness/research/issue-161/outward.json; echo; echo ===; python3 -c \"\nimport json\nd=json.load(open('/mnt/workdrive/issue161-harness/research/issue-161/outward.json'))\nprint('stop_condition:', json.dumps(d.get('stop_condition'))[:600])\nprint('contradictions sample:', json.dumps(d.get('contradictions'))[:400])\n\"","description":"Check artifact tail and stop_condition format"},"output":" 4 — O2, O4, O12, O15). Coverage: Qdrant-side vendor benchmarks (O2), independent SQLite-stack harness with published SQLite results (O4), a concrete adapter-protocol harness design for memory backends (O12), and multi-substrate incl. graph evaluation literature (O15). Stopped here per stage rules: evidence requirement satisfied, remaining candidates (O8, O10, O14) recorded but not read.\"\n  }\n}\n\nzsh:1: == not found\n","metadata":{"output":" 4 — O2, O4, O12, O15). Coverage: Qdrant-side vendor benchmarks (O2), independent SQLite-stack harness with published SQLite results (O4), a concrete adapter-protocol harness design for memory backends (O12), and multi-substrate incl. graph evaluation literature (O15). Stopped here per stage rules: evidence requirement satisfied, remaining candidates (O8, O10, O14) recorded but not read.\"\n  }\n}\n\nzsh:1: == not found\n","exit":1,"description":"Check artifact tail and stop_condition format","truncated":false},"title":"Check artifact tail and stop_condition format","time":{"start":1788950951570,"end":1788950951572}},"id":"prt_g001a085c932b50013sOVodKrg","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","messageID":"msg_g001a085c7c801001zv90Hr2IM"}}
+{"type":"step_finish","timestamp":1788950951600,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c93695001TcT49UmmE","reason":"tool-calls","snapshot":"5e5468775e6a3530e26afee735f810111cd79fdb","messageID":"msg_g001a085c7c801001zv90Hr2IM","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"step-finish","tokens":{"total":125338,"input":101709,"output":158,"reasoning":4463,"cache":{"write":0,"read":19008}},"cost":0}}
+{"type":"step_start","timestamp":1788950966930,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c97291001R23U97gAE","messageID":"msg_g001a085c936d7001YKHixUMNm","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","snapshot":"1e23d93917340c23e34c73c69ca20cc157e163db","type":"step-start"}}
+{"type":"tool_use","timestamp":1788950966978,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"bash","callID":"call_3ccf352e242747b183094e34","state":{"status":"completed","input":{"command":"python3 -c \"\nimport json\nd=json.load(open('/mnt/workdrive/issue161-harness/research/issue-161/outward.json'))\nprint('stop_condition:', json.dumps(d.get('stop_condition'))[:700])\nprint('---contradictions:', json.dumps(d.get('contradictions'))[:600])\nprint('---process_id:', d.get('process_id'))\n\"; ls /mnt/workdrive/issue161-harness/research/issue-163/","description":"Show stop_condition, contradictions, process_id fields"},"output":"stop_condition: {\"external_subquestions\": [\"Memory backend abstraction + comparative benchmark harness (SQLite FTS5/sqlite-vec vs Qdrant vs graph backends)\"], \"status\": \"adequate evidence\", \"note\": \"\\u22652 unique URLs read (requirement: \\u22652; actual: 4 \\u2014 O2, O4, O12, O15). Coverage: Qdrant-side vendor benchmarks (O2), independent SQLite-stack harness with published SQLite results (O4), a concrete adapter-protocol harness design for memory backends (O12), and multi-substrate incl. graph evaluation literature (O15). Stopped here per stage rules: evidence requirement satisfied, remaining candidates (O8, O10, O14) recorded but not read.\"}\n---contradictions: [{\"topic\": \"SQLite-based retrieval vs dedicated vector DB competitiveness\", \"resolution\": \"O4 claims SQLite hybrid matches or beats managed vector DBs at \\u2264~100K docs (<50 qps); O2's vendor benchmarks show Qdrant fastest in 1M\\u201310M-vector client-server regimes. Not directly contradictory \\u2014 the regimes barely overlap \\u2014 but both are quoted without a head-to-head at the same scale/precision, so the crossover point is unmeasured in this evidence set (O4's own Qdrant rows are pending, E10).\"}, {\"topic\": \"what 'latency' means in the competing benchmarks\", \"resolution\": \"O4 measures\n---process_id: research-161-r1\nstage_OUTWARD.events.jsonl\nstage_OUTWARD.mimo.err.log\ntask_tree.json\n","metadata":{"output":"stop_condition: {\"external_subquestions\": [\"Memory backend abstraction + comparative benchmark harness (SQLite FTS5/sqlite-vec vs Qdrant vs graph backends)\"], \"status\": \"adequate evidence\", \"note\": \"\\u22652 unique URLs read (requirement: \\u22652; actual: 4 \\u2014 O2, O4, O12, O15). Coverage: Qdrant-side vendor benchmarks (O2), independent SQLite-stack harness with published SQLite results (O4), a concrete adapter-protocol harness design for memory backends (O12), and multi-substrate incl. graph evaluation literature (O15). Stopped here per stage rules: evidence requirement satisfied, remaining candidates (O8, O10, O14) recorded but not read.\"}\n---contradictions: [{\"topic\": \"SQLite-based retrieval vs dedicated vector DB competitiveness\", \"resolution\": \"O4 claims SQLite hybrid matches or beats managed vector DBs at \\u2264~100K docs (<50 qps); O2's vendor benchmarks show Qdrant fastest in 1M\\u201310M-vector client-server regimes. Not directly contradictory \\u2014 the regimes barely overlap \\u2014 but both are quoted without a head-to-head at the same scale/precision, so the crossover point is unmeasured in this evidence set (O4's own Qdrant rows are pending, E10).\"}, {\"topic\": \"what 'latency' means in the competing benchmarks\", \"resolution\": \"O4 measures\n---process_id: research-161-r1\nstage_OUTWARD.events.jsonl\nstage_OUTWARD.mimo.err.log\ntask_tree.json\n","exit":0,"description":"Show stop_condition, contradictions, process_id fields","truncated":false},"title":"Show stop_condition, contradictions, process_id fields","time":{"start":1788950966975,"end":1788950966977}},"id":"prt_g001a085c97292001mBcQMHFfk","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","messageID":"msg_g001a085c936d7001YKHixUMNm"}}
+{"type":"step_finish","timestamp":1788950967005,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c972c2001zhNEC47fG","reason":"tool-calls","snapshot":"82090b332dac800d923d4422102fd5ac4fcc492e","messageID":"msg_g001a085c936d7001YKHixUMNm","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"step-finish","tokens":{"total":112680,"input":2416,"output":120,"reasoning":0,"cache":{"write":0,"read":110144}},"cost":0}}
+{"type":"step_start","timestamp":1788950980989,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c9a97b001K3h0xIjv3","messageID":"msg_g001a085c972fe001oi1EB7AWV","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","snapshot":"4f6da29d4e3cd399f116888eb476804ed29a6fc6","type":"step-start"}}
+{"type":"text","timestamp":1788951128237,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085c9b51f00170BrFspeR","messageID":"msg_g001a085c972fe001oi1EB7AWV","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"text","text":"Format confirmed — pure JSON artifact with a `stop_condition` object; the executor handles the stage marker. Writing the OUTWARD artifact now.","time":{"start":1788950983967,"end":1788951128233}}}
+{"type":"tool_use","timestamp":1788951128252,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"write","callID":"call_ac753cd0eb2d4f078e63647d","state":{"status":"completed","input":{"content":"{\n  \"stage\": \"OUTWARD\",\n  \"process_id\": \"research-163-r1\",\n  \"issue\": 163,\n  \"round\": 1,\n  \"subquestion\": \"Address: Temporal graph backend spike: Neo4j vs FalkorDB (LadybugDB experimental; Graphiti as reference)\",\n  \"discovery\": {\n    \"queries\": [\n      {\n        \"id\": \"Q1\",\n        \"tool\": \"webfetch (DuckDuckGo HTML)\",\n        \"query\": \"neo4j vs falkordb graph database benchmark comparison\",\n        \"receipt\": \"fetched OK; 10 results returned inline\"\n      },\n      {\n        \"id\": \"Q2\",\n        \"tool\": \"webfetch (DuckDuckGo HTML)\",\n        \"query\": \"graphiti zep temporal knowledge graph agent memory neo4j falkordb\",\n        \"receipt\": \"fetched OK; 10 results returned inline\"\n      },\n      {\n        \"id\": \"Q3\",\n        \"tool\": \"webfetch (DuckDuckGo HTML)\",\n        \"query\": \"ladybugdb graph database kuzu fork\",\n        \"receipt\": \"fetched OK; 10 results returned inline\"\n      },\n      {\n        \"id\": \"Q4\",\n        \"tool\": \"webfetch (DuckDuckGo HTML)\",\n        \"query\": \"falkordb redisgraph successor cypher features github\",\n        \"receipt\": \"fetched OK; 10 results returned inline\"\n      },\n      {\n        \"id\": \"Q5\",\n        \"tool\": \"webfetch (DuckDuckGo HTML)\",\n        \"query\": \"neo4j temporal versioning bitemporal cypher valid time\",\n        \"receipt\": \"fetched OK; 10 results returned inline\"\n      }\n    ],\n    \"sources_discovered\": [\n      { \"id\": \"O1\", \"url\": \"https://aimultiple.com/graph-databases\", \"class\": \"external (independent benchmark, updated 2026-04-15)\", \"note\": \"SELECTED and read\" },\n      { \"id\": \"O2\", \"url\": \"https://www.falkordb.com/blog/graph-database-performance-benchmarks-falkordb-vs-neo4j/\", \"class\": \"external (vendor blog, pub 2024-12-02, updated 2026-08-23)\", \"note\": \"SELECTED and read\" },\n      { \"id\": \"O3\", \"url\": \"https://www.puppygraph.com/blog/falkordb-vs-neo4j\", \"class\": \"external (competing-vendor comparison)\", \"note\": \"not selected — competing vendor has stake in the comparison\" },\n      { \"id\": \"O4\", \"url\": \"https://knodegraph.com/blog/falkordb-vs-neo4j/\", \"class\": \"external (third-party blog w/ 2026 benchmarks)\", \"note\": \"not selected — O1 covers the independent-benchmark slot with fuller methodology\" },\n      { \"id\": \"O5\", \"url\": \"https://github.com/FalkorDB/benchmark\", \"class\": \"repo (vendor benchmark harness)\", \"note\": \"SELECTED; README 404 on master and main; repo metadata read via GitHub API instead\" },\n      { \"id\": \"O6\", \"url\": \"https://www.plushcap.com/content/falkordb/blog/falkordb-falkordb-vs-neo4j-graph-database-performance-benchmarks\", \"class\": \"external (mirror of O2)\", \"note\": \"not selected — duplicate\" },\n      { \"id\": \"O7\", \"url\": \"https://inferensys.com/differences/neuro-symbolic-ai-frameworks/knowledge-graph-construction-tools/neo4j-vs-falkordb\", \"class\": \"external (aggregator comparison)\", \"note\": \"not selected\" },\n      { \"id\": \"O8\", \"url\": \"https://inferensys.com/differences/ai-software-factory-platforms/code-knowledge-graph-systems/neo4j-vs-falkordb-for-code-graphs\", \"class\": \"external (aggregator comparison)\", \"note\": \"not selected\" },\n      { \"id\": \"O9\", \"url\": \"https://3nuggets.io/compare-neo4j-vs-falkordb\", \"class\": \"external (practitioner fit comparison)\", \"note\": \"not selected\" },\n      { \"id\": \"O10\", \"url\": \"https://github.com/getzep/graphiti\", \"class\": \"repo (Graphiti primary)\", \"note\": \"SELECTED and read (README via raw.githubusercontent.com/main)\" },\n      { \"id\": \"O11\", \"url\": \"https://neo4j.com/blog/developer/graphiti-knowledge-graph-memory/\", \"class\": \"external (Neo4j official blog on Graphiti)\", \"note\": \"not selected — O10 is primary\" },\n      { \"id\": \"O12\", \"url\": \"https://docs.falkordb.com/agentic-memory/graphiti\", \"class\": \"external (FalkorDB vendor docs)\", \"note\": \"not selected\" },\n      { \"id\": \"O13\", \"url\": \"https://github.com/Memory-Agents/graphiti/\", \"class\": \"repo (mirror)\", \"note\": \"not selected — duplicate of O10\" },\n      { \"id\": \"O14\", \"url\": \"https://codex.danielvaughan.com/2026/03/30/graphiti-agent-memory-store/\", \"class\": \"external (practitioner review)\", \"note\": \"not selected\" },\n      { \"id\": \"O15\", \"url\": \"https://memorypapers.org/papers/zep-a-temporal-knowledge-graph-architecture-for-agent-memory\", \"class\": \"external (paper summary site)\", \"note\": \"not selected — primary paper is arXiv 2501.13956, referenced from O10\" },\n      { \"id\": \"O16\", \"url\": \"https://www.falkordb.com/blog/graphiti-falkordLine truncated
+{"type":"step_finish","timestamp":1788951128278,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085cbe8bc001N9yCV3mxB","reason":"tool-calls","snapshot":"7eada3d8479796025262a08e12d34f7460f8d062","messageID":"msg_g001a085c972fe001oi1EB7AWV","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"step-finish","tokens":{"total":134621,"input":5218,"output":8598,"reasoning":101,"cache":{"write":0,"read":120704}},"cost":0}}
+{"type":"step_start","timestamp":1788951145199,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085cc2aed001MR70Ww0nc","messageID":"msg_g001a085cbe8f6001jaXe0kb02","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","snapshot":"7d5be098162022ec58714cb931b1aa38c1303fa1","type":"step-start"}}
+{"type":"tool_use","timestamp":1788951145257,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"type":"tool","tool":"bash","callID":"call_a8b80e7e817b43428e1e8fcb","state":{"status":"completed","input":{"command":"python3 -c \"\nimport json\nd=json.load(open('/mnt/workdrive/issue161-harness/research/issue-163/outward.json'))\nprint('valid JSON; top keys:', list(d.keys()))\nprint('queries:', len(d['discovery']['queries']))\nprint('sources:', len(d['discovery']['sources_discovered']))\nprint('read:', len(d['reading']['sources_read']))\nprint('claims total:', sum(len(s['claims']) for s in d['reading']['sources_read']))\nprint('limitations:', len(d['limitations']))\nprint('contradictions:', len(d['contradictions']))\nids=[s['id'] for s in d['discovery']['sources_discovered']]\nassert len(ids)==len(set(ids)) and ids==[f'O{i}' for i in range(1,46)], 'ID check'\neids=[c['id'] for s in d['reading']['sources_read'] for c in s['claims']]\nassert len(eids)==len(set(eids)) and eids==[f'E{i}' for i in range(1,31)], 'E check'\nprint('O1-O45 contiguous, E1-E30 contiguous: OK')\n\"","description":"Validate artifact JSON and ID continuity"},"output":"valid JSON; top keys: ['stage', 'process_id', 'issue', 'round', 'subquestion', 'discovery', 'reading', 'limitations', 'contradictions', 'repo_grounding_note', 'stop_condition']\nqueries: 5\nsources: 45\nread: 10\nclaims total: 30\nlimitations: 8\ncontradictions: 4\nO1-O45 contiguous, E1-E30 contiguous: OK\n","metadata":{"output":"valid JSON; top keys: ['stage', 'process_id', 'issue', 'round', 'subquestion', 'discovery', 'reading', 'limitations', 'contradictions', 'repo_grounding_note', 'stop_condition']\nqueries: 5\nsources: 45\nread: 10\nclaims total: 30\nlimitations: 8\ncontradictions: 4\nO1-O45 contiguous, E1-E30 contiguous: OK\n","exit":0,"description":"Validate artifact JSON and ID continuity","truncated":false},"title":"Validate artifact JSON and ID continuity","time":{"start":1788951145251,"end":1788951145256}},"id":"prt_g001a085cc2aee001rbtfZU663","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","messageID":"msg_g001a085cbe8f6001jaXe0kb02"}}
+{"type":"step_finish","timestamp":1788951145285,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085cc2b29001WndK1GTlY","reason":"tool-calls","snapshot":"2e2bf5efe4a60fb6550269a49b5bc6236d2f6ebe","messageID":"msg_g001a085cbe8f6001jaXe0kb02","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"step-finish","tokens":{"total":121904,"input":9127,"output":265,"reasoning":0,"cache":{"write":0,"read":112512}},"cost":0}}
+{"type":"step_start","timestamp":1788951152345,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085cc46d8001UrC7zcBAR","messageID":"msg_g001a085cc2b6a001zsRv7n7zV","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","snapshot":"71a5d5cd5a7aeeb7b8b26c325d245afaa8e3d870","type":"step-start"}}
+{"type":"text","timestamp":1788951167285,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085cc4f90001aVhrOJMN0","messageID":"msg_g001a085cc2b6a001zsRv7n7zV","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"text","text":"OUTWARD stage for issue #163 is complete. Artifact written to `research/issue-163/outward.json` (validated JSON, O1–O45 and E1–E30 contiguous).\n\n## What was done\n\n**Discovery — 5 real SERP queries, all returned results** (receipts in artifact): Neo4j-vs-FalkorDB benchmarks, Graphiti/Zep, LadybugDB/Kuzu fork, FalkorDB/RedisGraph lineage, Neo4j temporal versioning. → **45 unique sources discovered and classified** (O1–O45).\n\n**Reading — 10 sources with fetch receipts** (9 full reads + 1 API-metadata receipt), covering both required classes:\n- **repo**: `getzep/graphiti` (O10), `LadybugDB/ladybug` (O21), `FalkorDB/FalkorDB` (O29), `FalkorDB/benchmark` (O5 — README 404 on both branches; GitHub API metadata only), `DIGITAL-FABRIC-AI/neo4j-temporal-graph` (O41, NEP-001)\n- **external**: AIMultiple independent benchmark (O1), FalkorDB vendor benchmark blog (O2), ex-Kuzu engineer's Ladybug writeup (O24), CMU dbdb.io entry (O28), Neo4j Cypher temporal docs (O38)\n\n**30 evidence claims (E1–E30)** extracted, including: independent benchmark (FalkorDB 6.7× throughput, 11/12 query wins, but Neo4j wins heaviest aggregation; 82× cold-start gap; 5.4× memory) vs vendor benchmark (p99 136ms vs 46.9s — treat as marketing-adjacent); FalkorDB = Redis module, SSPLv1, GraphBLAS, Rust rewrite in preview; LadybugDB = embedded MIT Cypher DB with FTS + vector index, active revival fork of archived Kuzu; Graphiti = pluggable-driver temporal framework (bi-temporal invalidation at the framework layer; Kuzu driver deprecated, no Ladybug driver); Neo4j has temporal *value types* but **no native temporal versioning** (NEP-001 draft RFC evidences the gap).\n\n**Recorded**: 8 limitations (incl. O5 README unretrievable, no FalkorDB-native temporal docs read, Apple-acquisition claim single-sourced), 4 contradictions (benchmark magnitudes by sponsor, Kuzu closure cause, \"production-tested RedisGraph\" framing, embedded-path-via-Graphiti gap), and a repo grounding note tying evidence to `src/rune/graph_memory.py`'s embedded SQLite posture.\n\nStopped per stage rules — evidence requirement (≥2 unique URLs) exceeded; no synthesis, no design, no code changes.\n\nStageCompleted: OUTWARD","time":{"start":1788951154576,"end":1788951167283}}}
+{"type":"step_finish","timestamp":1788951167313,"sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","part":{"id":"prt_g001a085cc8134001zzI3h19Si","reason":"stop","snapshot":"38cb1b15dd527c34725e003dd4c265876d62171c","messageID":"msg_g001a085cc2b6a001zsRv7n7zV","sessionID":"ses_-ffe5f7a3e2805ffeYaOOBiQE1","type":"step-finish","tokens":{"total":135675,"input":9107,"output":596,"reasoning":84,"cache":{"write":0,"read":125888}},"cost":0}}
@@ -0,0 +1,34 @@
+{"type":"step_start","timestamp":1788956518238,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"id":"prt_g001a0861e275b001IYWkR0eoE","messageID":"msg_g001a0861dfeeb001JPZ11h3vj","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","snapshot":"0d842306b88280e845c68295e9984fa094c25628","type":"step-start"}}
+{"type":"tool_use","timestamp":1788956520268,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"type":"tool","tool":"skill_search","callID":"call_d5d726efa37743ec8e41ffa7","state":{"status":"completed","input":{"query":"Review a synthesis artifact for implementation readiness (QUALIFY gate) and write a JSON verdict to research/issue-163/qualify.json; input is a research synthesis document for an issue, output is a PROCEED/REFINE verdict; audience is an orchestration pipeline"},"output":"{\n  \"status\": \"matched\",\n  \"results\": [\n    {\n      \"skill_id\": \"xlsx-official\",\n      \"name\": \"xlsx-official\",\n      \"score\": 0.6053,\n      \"reason\": \"The skill description matches these query terms: artifact, is, pipeline.\"\n    },\n    {\n      \"skill_id\": \"compose-next\",\n      \"name\": \"compose-next\",\n      \"score\": 0.5445,\n      \"reason\": \"The skill description matches these query terms: review, document, orchestration.\"\n    },\n    {\n      \"skill_id\": \"research-paper-writing\",\n      \"name\": \"research-paper-writing\",\n      \"score\": 0.4697,\n      \"reason\": \"The skill description matches these query terms: review, write.\"\n    }\n  ],\n  \"loaded_skill_id\": null\n}","metadata":{"status":"matched","loadedSkillID":null,"truncated":false},"title":"Found 3 skills","time":{"start":1788956520197,"end":1788956520266}},"id":"prt_g001a0861e28090014Q40dCgN0","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","messageID":"msg_g001a0861dfeeb001JPZ11h3vj"}}
+{"type":"tool_use","timestamp":1788956520397,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"type":"tool","tool":"glob","callID":"call_87723967252346cca1d076f8","state":{"status":"completed","input":{"pattern":"research/issue-163/**"},"output":"/mnt/workdrive/issue161-harness/research/issue-163/stage_QUALIFY.events.jsonl\n/mnt/workdrive/issue161-harness/research/issue-163/stage_QUALIFY.mimo.err.log\n/mnt/workdrive/issue161-harness/research/issue-163/.consumed_issue-163-QUALIFY-2\n/mnt/workdrive/issue161-harness/research/issue-163/task_tree.json\n/mnt/workdrive/issue161-harness/research/issue-163/stage_SYNTHESIS.events.jsonl\n/mnt/workdrive/issue161-harness/research/issue-163/synthesis.json\n/mnt/workdrive/issue161-harness/research/issue-163/stage_SYNTHESIS.mimo.err.log\n/mnt/workdrive/issue161-harness/research/issue-163/.consumed_issue-163-SYNTHESIS-2\n/mnt/workdrive/issue161-harness/research/issue-163/qualify.json\n/mnt/workdrive/issue161-harness/research/issue-163/adversarial.json\n/mnt/workdrive/issue161-harness/research/issue-163/stage_ADVERSARIAL.events.jsonl\n/mnt/workdrive/issue161-harness/research/issue-163/stage_ADVERSARIAL.mimo.err.log\n/mnt/workdrive/issue161-harness/research/issue-163/stage_INNOVATION.events.jsonl\n/mnt/workdrive/issue161-harness/research/issue-163/innovation.json\n/mnt/workdrive/issue161-harness/research/issue-163/stage_INNOVATION.mimo.err.log\n/mnt/workdrive/issue161-harness/research/issue-163/.consumed_issue-163-INNOVATION-1\n/mnt/workdrive/issue161-harness/research/issue-163/stage_APPLICABILITY.events.jsonl\n/mnt/workdrive/issue161-harness/research/issue-163/applicability.json\n/mnt/workdrive/issue161-harness/research/issue-163/stage_APPLICABILITY.mimo.err.log\n/mnt/workdrive/issue161-harness/research/issue-163/.consumed_issue-163-APPLICABILITY-1\n/mnt/workdrive/issue161-harness/research/issue-163/stage_OUTWARD.events.jsonl\n/mnt/workdrive/issue161-harness/research/issue-163/outward.json\n/mnt/workdrive/issue161-harness/research/issue-163/stage_OUTWARD.mimo.err.log\n/mnt/workdrive/issue161-harness/research/issue-163/.consumed_issue-163-OUTWARD-1\n/mnt/workdrive/issue161-harness/research/issue-163/.consumed_issue-163-INWARD-1\n/mnt/workdrive/issue161-harness/research/issue-163/.consumed_issue-163-ISSUE-1","metadata":{"count":26,"truncated":false},"title":"","time":{"start":1788956520202,"end":1788956520393}},"id":"prt_g001a0861e2e39001pIMerAr0F","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","messageID":"msg_g001a0861dfeeb001JPZ11h3vj"}}
+{"type":"step_finish","timestamp":1788956520541,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"id":"prt_g001a0861e2fcd00196pbsbeYZ","reason":"tool-calls","snapshot":"5d55de6c74c6d45acc136a3a754285dfc1f04b9f","messageID":"msg_g001a0861dfeeb001JPZ11h3vj","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","type":"step-finish","tokens":{"total":28697,"input":28545,"output":152,"reasoning":0,"cache":{"write":0,"read":0}},"cost":0}}
+{"type":"step_start","timestamp":1788956529180,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"id":"prt_g001a0861e521a001STCrXGO1j","messageID":"msg_g001a0861e3116001O2JuC7J3J","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","snapshot":"9624478afb62694fd6ef55e697557685308f0b6b","type":"step-start"}}
+{"type":"text","timestamp":1788956530858,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"id":"prt_g001a0861e52d3001Sv17p0aLe","messageID":"msg_g001a0861e3116001O2JuC7J3J","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","type":"text","text":"No matching skill — I'll run the QUALIFY review manually. Reading the synthesis artifact and supporting context now.","time":{"start":1788956529363,"end":1788956530856}}}
+{"type":"tool_use","timestamp":1788956530868,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"type":"tool","tool":"read","callID":"call_774c6e5c10254dfaa5664fe6","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/research/issue-163/task_tree.json"},"output":"<path>/mnt/workdrive/issue161-harness/research/issue-163/task_tree.json</path>\n<type>file</type>\n<content>\n1: {\n2:   \"issue\": 163,\n3:   \"round\": 1,\n4:   \"current_stage\": \"QUALIFY\",\n5:   \"completed_stages\": [\n6:     \"ISSUE\",\n7:     \"INWARD\",\n8:     \"OUTWARD\",\n9:     \"APPLICABILITY\",\n10:     \"INNOVATION\",\n11:     \"ADVERSARIAL\",\n12:     \"SYNTHESIS\",\n13:     \"QUALIFY\",\n14:     \"SYNTHESIS\"\n15:   ],\n16:   \"artifacts\": {\n17:     \"ISSUE\": {\n18:       \"contract\": {\n19:         \"issue\": 163,\n20:         \"title\": \"Temporal graph backend spike: Neo4j vs FalkorDB (LadybugDB experimental; Graphiti as reference)\",\n21:         \"question_type\": \"mixed\",\n22:         \"sub_questions\": [\n23:           \"Address: Temporal graph backend spike: Neo4j vs FalkorDB (LadybugDB experimental; Graphiti as reference)\"\n24:         ],\n25:         \"required_stages\": [\n26:           \"ISSUE\",\n27:           \"INWARD\",\n28:           \"OUTWARD\",\n29:           \"ADVERSARIAL\",\n30:           \"INNOVATION\",\n31:           \"SYNTHESIS\",\n32:           \"QUALIFY\"\n33:         ],\n34:         \"skipped_stages\": {\n35:           \"APPLICABILITY\": \"No OUTWARD research to ground against Rune.\"\n36:         },\n37:         \"evidence_classes\": [\n38:           \"repo\",\n39:           \"external\"\n40:         ],\n41:         \"sufficient_evidence\": \"\\u22652 code-path citations for INWARD; \\u22652 unique URLs for OUTWARD (if required)\",\n42:         \"expected_artifact\": \"synthesis.json\",\n43:         \"ambiguous\": false,\n44:         \"needs_mimo\": false,\n45:         \"source\": \"deterministic\"\n46:       },\n47:       \"deterministic\": true\n48:     },\n49:     \"INWARD\": {\n50:       \"context\": {\n51:         \"keywords\": [\n52:           \"temporal\",\n53:           \"graph\",\n54:           \"backend\",\n55:           \"spike\",\n56:           \"neo\",\n57:           \"falkordb\",\n58:           \"ladybugdb\",\n59:           \"experimental\",\n60:           \"graphiti\",\n61:           \"reference\",\n62:           \"plain\",\n63:           \"summary\",\n64:           \"architecture_frontier_handoff\",\n65:           \"compare\",\n66:           \"graph\",\n67:           \"backends\",\n68:           \"rune\",\n69:           \"structural\",\n70:           \"projection\",\n71:           \"episodes\"\n72:         ],\n73:         \"umbrella_matches\": [\n74:           {\n75:             \"umbrella\": \"memory\",\n76:             \"module\": \"graph_memory\",\n77:             \"keyword\": \"graph\"\n78:           },\n79:           {\n80:             \"umbrella\": \"memory\",\n81:             \"module\": \"graph_shard_bridge\",\n82:             \"keyword\": \"graph\"\n83:           },\n84:           {\n85:             \"umbrella\": \"orchestration\",\n86:             \"module\": \"rune_operator\",\n87:             \"keyword\": \"rune\"\n88:           },\n89:           {\n90:             \"umbrella\": \"orchestration\",\n91:             \"module\": \"rune_tui\",\n92:             \"keyword\": \"rune\"\n93:           },\n94:           {\n95:             \"umbrella\": \"orchestration\",\n96:             \"module\": \"rune_graphic\",\n97:             \"keyword\": \"graph\"\n98:           },\n99:           {\n100:             \"umbrella\": \"orchestration\",\n101:             \"module\": \"rune_spinner\",\n102:             \"keyword\": \"rune\"\n103:           },\n104:           {\n105:             \"umbrella\": \"orchestration\",\n106:             \"module\": \"rune_profiler\",\n107:             \"keyword\": \"rune\"\n108:           }\n109:         ],\n110:         \"candidate_files\": [\n111:           \"src/rune/curator.py\",\n112:           \"src/rune/rune_tui.py\",\n113:           \"src/rune/graph_memory.py\",\n114:           \"src/rune/sleep_time.py\",\n115:           \"src/rune/elastic_cognition.py\",\n116:           \"src/rune/rune_operator.py\",\n117:           \"src/rune/rune_profiler.py\",\n118:           \"src/rune/warm_router.py\",\n119:           \"src/rune/abstraction.py\",\n120:           \"src/rune/canary_native.py\",\n121:           \"src/rune/canary_p0_04.py\",\n122:           \"src/rune/canary_p1_07.py\",\n123:           \"src/rune/complexity_scorer.py\",\n124:           \"src/rune/identity_anchors.py\",\n125:           \"src/rune/memory_consolidation.py\"\n126:         ],\n127:         \"candidate_tests\": [\n128:           \"tests/test_retrieval_benchmark.py\",\n129:           \"tests/test_orchestration_memory_synthesis.py\",\n130:           \"tests/test_p1_03_memory_selection.py\",\n131:           \"tests/test_p1_06_model_routing.py\",\n132Line truncated
+{"type":"tool_use","timestamp":1788956530872,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"type":"tool","tool":"read","callID":"call_63225c1096c542689a03606d","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/research/issue-163/synthesis.json"},"output":"<path>/mnt/workdrive/issue161-harness/research/issue-163/synthesis.json</path>\n<type>file</type>\n<content>\n1: {\n2:   \"stage\": \"SYNTHESIS\",\n3:   \"issue\": 163,\n4:   \"round\": 2,\n5:   \"process_id\": \"research-163-r1\",\n6:   \"question\": \"Given the candidates that survived, WHAT SHOULD MIMO CODE BUILD?\",\n7:   \"selected_design\": \"Corrected, re-sequenced temporal+lexical query layer over graph.sqlite (survivors C5+C6; C4 as characterization-only; C9 as a constrained track). Concretely: (1) WRITE-SIDE FIRST — M1a, the one-line fix in add_edge (graph_memory.py:206-208) that sets valid_until=now on supersede, making the documented bitemporal as-of filter correct for all future data with free backfill (the DB is empty); (2) C5 — an --as-of <iso8601> point-in-time query parameter whose input is strictly normalized to the now_iso() format before any comparison (M2), replacing the status='active' filter with valid_from <= t AND (valid_until IS NULL OR t < valid_until) AND learned_at <= t in both the outgoing and incoming edge queries, default path unchanged; (3) C6 — an FTS5 lexical entry-resolution tier built as a NON-CONTENTLESS FTS5 projection table graph_lex(name, alias, entity_id UNINDEXED) with one row per (entity_id, text) over entities.name ∪ aliases.alias, INSERT-only maintenance on the existing write path, a documented rebuild-lex command, and a recorded tokenizer decision (M3, layout committed in this round); (4) all lexical benefit measured END-TO-END at ContextBroker.memory_selector output, not graph_memory.query output (M4); (5) read-layer work sequenced behind write-side population (M5) with the T5 population gate at a pre-committed N=4 weeks and <50-edges threshold. C4 ships as a documentation characterization correction only (M6); C9 ships as nothing — it is carried solely as the M7 constraint on any future analytics sidecar.\",\n8:   \"why_this_design_won\": \"C5 and C6 are the only surviving candidates that add capabilities the status quo genuinely lacks — reading the superseded history Rune already persists but cannot query temporally, and lifting entry-point recall past exact/alias/substring — and both stay inside Rune's embedded, no-new-dependency posture (in-process SQLite; FTS5 verified available at sqlite 3.53.4). INN-1's original formulation was falsified twice over: its as-of filter returns BOTH sides of a contradiction as current knowledge against the current writer (A2, critical — supersede never writes valid_until, graph_memory.py:207-208), and its benefit chain is broken at the empty graph (A5) and again at the memory_selector floor (A6). The adversarial stage's simpler-alternative analysis (A3, A13) dictated the winning shape: fix the writer first (one line, free backfill on an empty DB), then read-layer work, measured end-to-end. Within M1, option (a) wins over option (b): the valid_until-on-supersede fix makes the documented bitemporal filter correct with a single WHERE clause and avoids inventing a superseded_by chain-walk helper with terminal/cycle semantics (CA6); option (b) is retained as a documented fallback should T2 falsify M1a. C4 and C9 survive as constraints, not work: C4's 'bi-temporal E14 1:1' claim is contradicted by the code (A1, A11) and survives only as a corrected characterization (M6); C9 is track-only (A9/A10) and contributes only the M7 boundary on future analytics. Round 2 commits the three QUALIFY findings into this design — the graph_lex row layout and id mapping, a concrete N=4 weeks for the population gate, and the named alias sort key — so the handoff to the coding worker is verbatim-executable with no invented design. Nothing here resurrects INN-1-as-specified or any applicability-stage rejection.\",\n9:   \"rejected_alternatives\": [\n10:     {\n11:       \"design\": \"INN-1#temporal-filter-as-specified — ship the as-of filter (valid_from <= t AND (valid_until IS NULL OR t < valid_until) AND learned_at <= t) against the current writer\",\n12:       \"reason\": \"REJECTED at ADVERSARIAL (A2, critical): supersede (graph_memory.py:207-208) sets status/superseded_by but never valid_until, so superseded edges remain NULL-open on the valid axis and pass all three predicates for every t after creation — the feature returns the superseded AND superseding edges of a contradiction simultaneously, the exact failure it exists to prevent. Do NOT resurrect in this form.\"\n13:     },\n14:     {\n15:       \"design\": \"M1b — transaction-time-only as-of (learned_at <= t AND (status='active' OR the superseding edge's learned_at > t), walking superseded_by to a terminal)\",\n16:       \"reason\": \"Viable fallback, not selected: it rLine truncated
+{"type":"step_finish","timestamp":1788956531178,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"id":"prt_g001a0861e58b7001lpk2eeKOy","reason":"tool-calls","snapshot":"53024d291d5cf651fd73b7bcf40aecfb60ffe5f9","messageID":"msg_g001a0861e3116001O2JuC7J3J","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","type":"step-finish","tokens":{"total":29559,"input":887,"output":128,"reasoning":0,"cache":{"write":0,"read":28544}},"cost":0}}
+{"type":"step_start","timestamp":1788956543701,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"id":"prt_g001a0861e8ad2001MeRCG6oHm","messageID":"msg_g001a0861e5b64001ktV4slFwV","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","snapshot":"cfe0f23129992c171451fc1591234a5ae124423d","type":"step-start"}}
+{"type":"text","timestamp":1788956544806,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"id":"prt_g001a0861e8c2c001nCVckiyYA","messageID":"msg_g001a0861e5b64001ktV4slFwV","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","type":"text","text":"The synthesis artifact is a round-2 dossier claiming to have resolved three prior QUALIFY findings. Before judging readiness, I'll check the prior QUALIFY verdict and verify that the cited code locations in `graph_memory.py` actually match the interfaces being specified — a coder handed these verbatim would implement against those lines.","time":{"start":1788956544044,"end":1788956544803}}}
+{"type":"tool_use","timestamp":1788956544880,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"type":"tool","tool":"read","callID":"call_fa68e4cb43bd4a3e92acbf35","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/research/issue-163/qualify.json"},"output":"<path>/mnt/workdrive/issue161-harness/research/issue-163/qualify.json</path>\n<type>file</type>\n<content>\n1: {\n2:   \"outcome\": \"REFINE_SYNTHESIS\",\n3:   \"findings\": [\n4:     \"INTERFACE GAP (M3/FTS5 projection — blocks verbatim handoff): the declared DDL 'CREATE VIRTUAL TABLE graph_lex USING fts5(name, alias, content='')' cannot be implemented as specified without the coder inventing a design. (a) A contentless FTS5 table has no unindexed columns, so no mapping from FTS rows back to entity ids is specified — yet the FTS5 BM25 resolution tier must return an entity id (rowid=entities.id convention vs. join-on-name are both viable and mutually incompatible). (b) The 1:N entity→aliases relation is unrepresented: the two-column DDL permits one-row-per-entity with packed aliases (packing format unspecified) or one-row-per-alias (which breaks id mapping); nothing selects between them. (c) 'Rows maintained on the existing entity/alias write path (resolve_entity, add_edge)' is not mechanically implementable for a contentless table: add_edge inserts new aliases for already-existing entities (graph_memory.py:209-212), which requires updating that entity's FTS row, and contentless FTS5 supports no UPDATE — the coder would have to invent a delete+reinsert protocol. Required fix: specify the row layout and id mapping (e.g., a non-contentless graph_lex with an entity_id column, or rowid=entities.id with one row per entity and a defined alias-packing format), or explicitly delegate the choice the way the tokenizer decision is delegated.\",\n5:     \"PARAMETER GAP (T5/INV-5/AC9 — blocks test_population_gate_harness and sequence step 9): N is never committed. Step 9 says 'after N weeks of real use (N fixed in advance)', INV-5 says 'over N weeks of real use', and AC9 requires 'a pre-committed N and threshold' — but only the threshold (<50 edges) is given; N remains symbolic throughout the artifact. The coding worker cannot finalize the T5 harness or execute step 9 without inventing N, a value the artifact itself assigns to pre-commitment. Required fix: commit a concrete N (e.g., N=4 weeks) in the synthesis.\",\n6:     \"MINOR GAP (M3/INV-8 — non-blocking but unpinned): the deterministic alias ordering is specified only as 'ORDER BY added, replacing the bare LIMIT 1 at :228-231' without naming the sort key. INV-8 and test_alias_resolution_deterministic pin the observable property (any stable key satisfies them), so a competent coder can proceed, but naming the key (e.g., ORDER BY a.entity_id ASC) would make the instruction verbatim.\"\n7:   ]\n8: }\n\n(End of file - total 8 lines)\n</content>","metadata":{"preview":"{\n  \"outcome\": \"REFINE_SYNTHESIS\",\n  \"findings\": [\n    \"INTERFACE GAP (M3/FTS5 projection — blocks verbatim handoff): the declared DDL 'CREATE VIRTUAL TABLE graph_lex USING fts5(name, alias, content='')' cannot be implemented as specified without the coder inventing a design. (a) A contentless FTS5 table has no unindexed columns, so no mapping from FTS rows back to entity ids is specified — yet the FTS5 BM25 resolution tier must return an entity id (rowid=entities.id convention vs. join-on-name are both viable and mutually incompatible). (b) The 1:N entity→aliases relation is unrepresented: the two-column DDL permits one-row-per-entity with packed aliases (packing format unspecified) or one-row-per-alias (which breaks id mapping); nothing selects between them. (c) 'Rows maintained on the existing entity/alias write path (resolve_entity, add_edge)' is not mechanically implementable for a contentless table: add_edge inserts new aliases for already-existing entities (graph_memory.py:209-212), which requires updating that entity's FTS row, and contentless FTS5 supports no UPDATE — the coder would have to invent a delete+reinsert protocol. Required fix: specify the row layout and id mapping (e.g., a non-contentless graph_lex with an entity_id column, or rowid=entities.id with one row per entity and a defined alias-packing format), or explicitly delegate the choice the way the tokenizer decision is delegated.\",\n    \"PARAMETER GAP (T5/INV-5/AC9 — blocks test_population_gate_harness and sequence step 9): N is never committed. Step 9 says 'after N weeks of real use (N fixed in advance)', INV-5 says 'over N weeks of real use', and AC9 requires 'a pre-committed N and threshold' — but only the threshold (<50 edges) is given; N remains symbolic throughout the artifact. The coding worker cannot finalize the T5 harness or execute step 9 without inventing N, a value the artifact itself assigns to pre-commitment. Required fix: commit a concrete N (e.g., N=4 weeks) in the synthesis.\",\n    \"MLine truncated
+{"type":"tool_use","timestamp":1788956544884,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"type":"tool","tool":"read","callID":"call_ad7a7168736f4076bb1e65a9","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/research/issue-163/adversarial.json","limit":120},"output":"<path>/mnt/workdrive/issue161-harness/research/issue-163/adversarial.json</path>\n<type>file</type>\n<content>\n1: {\n2:   \"stage\": \"ADVERSARIAL\",\n3:   \"issue\": 163,\n4:   \"round\": 1,\n5:   \"process_id\": \"research-163-r1\",\n6:   \"attacked\": [\n7:     \"C4\",\n8:     \"C5\",\n9:     \"C6\",\n10:     \"C9\",\n11:     \"INN-1\"\n12:   ],\n13:   \"surviving_candidates\": [\n14:     {\n15:       \"id\": \"C4\",\n16:       \"disposition\": \"SURVIVES_WITH_DOWNGRADE\",\n17:       \"note\": \"The claim 'implements E14's model 1:1' is contradicted by the code (attacks A1, A11): the tier is a transaction-time append log with same-triple supersession, NOT a bi-temporal model with automatic contradiction invalidation. The candidate survives as 'partially integrated'; downstream dossiers must not repeat the 1:1 characterization.\"\n18:     },\n19:     {\n20:       \"id\": \"C5\",\n21:       \"disposition\": \"SURVIVES_ONLY_IN_CORRECTED_FORM\",\n22:       \"note\": \"AS-OF time-travel over preserved history is a real, low-cost capability \\u2014 but the INN-1 filter formulation is falsified (attack A2). Survives only via mitigation M1: either write valid_until on supersede (one line) or implement transaction-time as-of (learned_at + superseded_by chain) and drop the valid-time half until a writer populates valid windows.\"\n23:     },\n24:     {\n25:       \"id\": \"C6\",\n26:       \"disposition\": \"SURVIVES_CONDITIONAL\",\n27:       \"note\": \"Mechanism is sound and FTS5 is available (verified: sqlite 3.53.4 in this runtime). But the benefit chain is broken twice today: the production graph is EMPTY (attack A5) and graph recall is re-floored by memory_selector (attack A6). Survives only with the projection-rule framing (M3), selector-floor test (M4), and write-side sequencing (M5).\"\n28:     },\n29:     {\n30:       \"id\": \"C9\",\n31:       \"disposition\": \"SURVIVES_TRACK_ONLY\",\n32:       \"note\": \"Uncontested as a future lead; attacks A9/A10 only constrain its future form: DuckDB/Arrow analytics must be a rebuildable read-only projection of graph.sqlite, never a second store, and must never acquire independent write authority.\"\n33:     }\n34:   ],\n35:   \"rejected_candidates\": [\n36:     {\n37:       \"id\": \"INN-1#temporal-filter-as-specified\",\n38:       \"reason\": \"REJECTED as literally specified \\u2014 do NOT carry to SYNTHESIS. The filter 'valid_from <= t AND (valid_until IS NULL OR t < valid_until) AND learned_at <= t' applied to the current writer's data returns STALE SUPERSEDED FACTS as if believed: supersede (graph_memory.py:207-208) sets status/superseded_by but never valid_until, so superseded edges remain NULL-open on the valid axis and pass all three predicates for every t after their creation. An as-of query would return the superseded AND superseding edges of a contradiction simultaneously \\u2014 presenting both sides of a contradiction as current knowledge, the exact failure the feature exists to prevent. C5 itself survives after rework (see surviving_candidates); this exact formulation does not. This is E29's documented NULL-as-open-ended pitfall realized in the proposal spec, not merely in hand-written Cypher.\"\n39:     }\n40:   ],\n41:   \"attacks\": [\n42:     {\n43:       \"id\": \"A1\",\n44:       \"target_candidate\": \"C4\",\n45:       \"dimension\": \"contradicting_evidence + weak_assumptions\",\n46:       \"finding\": \"The 'bi-temporal' claim is schema-only. valid_until is NEVER written anywhere in the repo (grep over src/rune: appears only in DDL line 107, INSERT writing NULL at line 201, and SELECTs); status='expired' has no writer; and valid_from and learned_at are both set to the SAME now_iso() call in the single INSERT (lines 200-204). The live production DB confirms: 0 edges where valid_until IS NOT NULL, 0 where valid_from <> learned_at. The tier is a transaction-time-only append log with supersession \\u2014 the valid-time axis of E14's model is declared but dead.\",\n47:       \"evidence\": \"graph_memory.py:107,200-204,207-208 (valid_until written NULL; valid_from=learned_at=ts); grep valid_until/superseded across src/rune (no writer); live DB receipt: read-only sqlite3 query against /mnt/workdrive/rune/memory/graph/graph.sqlite returned entities=0, aliases=0, edges=0, valid_until non-null=0, valid_from<>learned_at=0, superseded_by non-null=0\",\n48:       \"severity\": \"high\"\n49:     },\n50:     {\n51:       \"id\": \"A2\",\n52:       \"target_candidate\": \"C5 (via INN-1)\",\n53:       \"dimension\": \"failure_modes\",\n54:       \"finding\": \"As-of filter as specified returns stale superseded facts (see rejected_candidates for full Line truncated
+{"type":"step_finish","timestamp":1788956545099,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"id":"prt_g001a0861e8f73001ZsEXXzolG","reason":"tool-calls","snapshot":"522b1b42d45fb13b16f141f6bf27a1528572c3be","messageID":"msg_g001a0861e5b64001ktV4slFwV","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","type":"step-finish","tokens":{"total":53705,"input":23946,"output":319,"reasoning":0,"cache":{"write":0,"read":29440}},"cost":0}}
+{"type":"step_start","timestamp":1788956579613,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"id":"prt_g001a0861f171b0019I1Kzz6C0","messageID":"msg_g001a0861e9217001nrEPd2xoN","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","snapshot":"3ec4411eb00408d3c0a6fb071139af66fb23db23","type":"step-start"}}
+{"type":"text","timestamp":1788956582064,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"id":"prt_g001a0861f1962001O0n8sUo3t","messageID":"msg_g001a0861e9217001nrEPd2xoN","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","type":"text","text":"The round-2 synthesis explicitly resolves all three prior QUALIFY findings. As a final readiness check I'll spot-verify the load-bearing code citations (supersede block, alias LIMIT 1, now_iso producer) against the actual source, since the coder will be handed these line references verbatim.","time":{"start":1788956580194,"end":1788956582062}}}
+{"type":"tool_use","timestamp":1788956582537,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"type":"tool","tool":"glob","callID":"call_e193ff83a7a246c798649faa","state":{"status":"completed","input":{"path":"/mnt/workdrive","pattern":"**/graph_memory.py"},"output":"/mnt/workdrive/issue161-harness/src/rune/graph_memory.py\n/mnt/workdrive/research-stage/src/rune/graph_memory.py\n/mnt/workdrive/robot-fix/src/rune/graph_memory.py\n/mnt/workdrive/p151/src/rune/graph_memory.py\n/mnt/workdrive/p149/src/rune/graph_memory.py\n/mnt/workdrive/probot/src/rune/graph_memory.py\n/mnt/workdrive/prun/src/rune/graph_memory.py\n/mnt/workdrive/p150/src/rune/graph_memory.py\n/mnt/workdrive/p122/src/rune/graph_memory.py\n/mnt/workdrive/p192/src/rune/graph_memory.py\n/mnt/workdrive/p1-03/src/rune/graph_memory.py\n/mnt/workdrive/rune/src/rune/graph_memory.py","metadata":{"count":12,"truncated":false},"title":"..","time":{"start":1788956582063,"end":1788956582536}},"id":"prt_g001a0861f196f001ND7GQnWID","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","messageID":"msg_g001a0861e9217001nrEPd2xoN"}}
+{"type":"step_finish","timestamp":1788956582563,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"id":"prt_g001a0861f2289001hUBj5xXjo","reason":"tool-calls","snapshot":"871204cc96be9defbe8c14fadb51d3bc221d3f80","messageID":"msg_g001a0861e9217001nrEPd2xoN","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","type":"step-finish","tokens":{"total":57878,"input":4014,"output":424,"reasoning":0,"cache":{"write":0,"read":53440}},"cost":0}}
+{"type":"step_start","timestamp":1788956594601,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"id":"prt_g001a0861f51a7001ZCafJB2y7","messageID":"msg_g001a0861f22ce001oycsoWDtI","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","snapshot":"556e17855b9cd42d3d68030f0b28977560ed918a","type":"step-start"}}
+{"type":"tool_use","timestamp":1788956595624,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"type":"tool","tool":"read","callID":"call_2ca187c9de394e9ebf3e299b","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/src/rune/graph_memory.py","limit":100,"offset":140},"output":"<path>/mnt/workdrive/issue161-harness/src/rune/graph_memory.py</path>\n<type>file</type>\n<content>\n140:     Alias-first resolution mirrors iText2KG's incremental matching.\"\"\"\n141:     name = (name or \"\").strip()\n142:     if not name:\n143:         return None\n144:     row = db.execute(\"SELECT id FROM entities WHERE name = ?\", (name,)).fetchone()\n145:     if row:\n146:         return row[\"id\"]\n147:     row = db.execute(\"\"\"\n148:         SELECT a.entity_id FROM aliases a JOIN entities e ON a.entity_id = e.id\n149:         WHERE lower(a.alias) = lower(?)\"\"\", (name,)).fetchone()\n150:     if row:\n151:         return row[\"entity_id\"]\n152:     cur = db.execute(\n153:         \"INSERT INTO entities (name, type, summary, created_at) VALUES (?,?,?,?)\",\n154:         (name, node_type if node_type in NODE_TYPES else \"concept\", \"\", now_iso()))\n155:     return cur.lastrowid\n156: \n157: \n158: def add_edge(db, subj, pred, obj, subj_type=\"concept\", obj_type=\"concept\",\n159:              evidence=\"\", source=\"\", confidence=None, strength=None):\n160:     \"\"\"Add a fact to the graph with write-time gating + supersession.\n161: \n162:     - If strength < 3, the fact is gated out (never touches the graph).\n163:     - On a contradiction (same subj-pred-obj already active), the old edge is\n164:       marked superseded and the new one wins — history preserved.\n165:     \"\"\"\n166:     pred = (pred or \"\").strip().lower().replace(\" \", \"_\")\n167:     if pred not in PREDICATES:\n168:         import logging\n169:         logging.getLogger(\"graph_memory\").warning(\n170:             \"unknown predicate '%s' refused (allowed: %d)\", pred, len(PREDICATES))\n171:         return False\n172:     if confidence is None:\n173:         confidence = strength_to_conf(strength)\n174:         if confidence is None:\n175:             import logging\n176:             logging.getLogger(\"graph_memory\").debug(\n177:                 \"write-gated (strength %s < 3) — skipped\", strength)\n178:             return False\n179:     sid = resolve_entity(db, subj, subj_type)\n180:     oid = resolve_entity(db, obj, obj_type)\n181:     if sid is None or oid is None or sid == oid:\n182:         return False\n183:     # Check for existing active edge with same (subj,pred,obj).\n184:     old = db.execute(\"\"\"\n185:         SELECT id, confidence, evidence FROM edges WHERE subj_id=? AND pred=? AND obj_id=?\n186:         AND status='active'\"\"\", (sid, pred, oid)).fetchone()\n187:     ts = now_iso()\n188:     if old:\n189:         # Only supersede if new evidence is stronger or different.\n190:         # If same confidence and same evidence, this is a duplicate — skip.\n191:         old_conf = old[\"confidence\"] or 0\n192:         new_conf = confidence or 0\n193:         old_evidence = (old[\"evidence\"] or \"\").strip()\n194:         new_evidence = (evidence or \"\").strip()[:400]\n195:         if new_conf <= old_conf and new_evidence == old_evidence:\n196:             # Duplicate fact — no change needed\n197:             return True\n198:         # Supersede: insert new edge FIRST, then mark old as superseded\n199:         # (audit fix: prevents orphaned edges on crash)\n200:     cur = db.execute(\"\"\"\n201:         INSERT INTO edges (subj_id, pred, obj_id, valid_from, valid_until,\n202:                           learned_at, confidence, evidence, source, status)\n203:         VALUES (?,?,?,?,NULL,?,?,?,?,'active')\"\"\",\n204:         (sid, pred, oid, ts, ts, confidence, (evidence or \"\")[:400], source or \"\"))\n205:     new_id = cur.lastrowid\n206:     if old:\n207:         db.execute(\"UPDATE edges SET status='superseded', superseded_by=? WHERE id=?\",\n208:                    (new_id, old[\"id\"]))\n209:     db.execute(\"INSERT OR IGNORE INTO aliases (entity_id, alias) VALUES (?,?)\",\n210:                (sid, subj.strip()))\n211:     db.execute(\"INSERT OR IGNORE INTO aliases (entity_id, alias) VALUES (?,?)\",\n212:                (oid, obj.strip()))\n213:     db.commit()\n214:     return True\n215: \n216: \n217: def query(db, term, hops=1, latest_only=True):\n218:     \"\"\"Find an entity by name/alias then BFS `hops` deep, returning compact\n219:     facts. Follows the research: vector/lexical finds the entry node, graph\n220:     traverses from it (HippoRAG-style).\"\"\"\n221:     term = (term or \"\").strip()\n222:     if not term:\n223:         return []\n224:     eid = None\n225:     row = db.execute(\"SELECT id, name, type FROM entities WHERE lower(name)=lower(?)\",\n226:                      (term,)).fetchone()\n227:     if not row:\n228:         row = db.execute(\"\"\"\n229: Line truncated
+{"type":"tool_use","timestamp":1788956595629,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"type":"tool","tool":"read","callID":"call_fcff0c0f433f496797000d79","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/src/rune/graph_memory.py","limit":30,"offset":70},"output":"<path>/mnt/workdrive/issue161-harness/src/rune/graph_memory.py</path>\n<type>file</type>\n<content>\n70: NODE_TYPES = {\"person\", \"project\", \"concept\", \"tool\", \"preference\",\n71:               \"organization\", \"place\", \"event\", \"skill\", \"artefact\"}\n72: \n73: # Confidence: evidence-gated (EvoKG-style f(frequency, recency, source_cred)).\n74: # We fold the curator's strength (0-5) into a 0-1 confidence.\n75: DEFAULT_CONF = 0.7\n76: \n77: \n78: def now_iso():\n79:     return datetime.now(timezone.utc).isoformat(timespec=\"seconds\")\n80: \n81: \n82: def connect():\n83:     os.makedirs(GRAPH_DIR, exist_ok=True)\n84:     db = sqlite3.connect(DB_PATH)\n85:     try:\n86:         db.row_factory = sqlite3.Row\n87:         db.executescript(\"\"\"\n88:         CREATE TABLE IF NOT EXISTS entities (\n89:             id INTEGER PRIMARY KEY AUTOINCREMENT,\n90:             name TEXT NOT NULL UNIQUE,\n91:             type TEXT NOT NULL DEFAULT 'concept',\n92:             summary TEXT DEFAULT '',\n93:             created_at TEXT NOT NULL\n94:         );\n95:         CREATE TABLE IF NOT EXISTS aliases (\n96:             entity_id INTEGER NOT NULL,\n97:             alias TEXT NOT NULL,\n98:             UNIQUE(entity_id, alias),\n99:             FOREIGN KEY(entity_id) REFERENCES entities(id)\n\n(Showing lines 70-99 of 416. Use offset=100 to continue.)\n</content>","metadata":{"preview":"NODE_TYPES = {\"person\", \"project\", \"concept\", \"tool\", \"preference\",\n              \"organization\", \"place\", \"event\", \"skill\", \"artefact\"}\n\n# Confidence: evidence-gated (EvoKG-style f(frequency, recency, source_cred)).\n# We fold the curator's strength (0-5) into a 0-1 confidence.\nDEFAULT_CONF = 0.7\n\n\ndef now_iso():\n    return datetime.now(timezone.utc).isoformat(timespec=\"seconds\")\n\n\ndef connect():\n    os.makedirs(GRAPH_DIR, exist_ok=True)\n    db = sqlite3.connect(DB_PATH)\n    try:\n        db.row_factory = sqlite3.Row\n        db.executescript(\"\"\"\n        CREATE TABLE IF NOT EXISTS entities (\n            id INTEGER PRIMARY KEY AUTOINCREMENT,","truncated":true,"loaded":[]},"title":"src/rune/graph_memory.py","time":{"start":1788956595613,"end":1788956595626}},"id":"prt_g001a0861f51a9001t6s24bhI5","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","messageID":"msg_g001a0861f22ce001oycsoWDtI"}}
+{"type":"step_finish","timestamp":1788956595655,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"id":"prt_g001a0861f55ac001nZO964t1P","reason":"tool-calls","snapshot":"b34d2d099aabe92489fd361206ced4a93f2f3309","messageID":"msg_g001a0861f22ce001oycsoWDtI","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","type":"step-finish","tokens":{"total":57919,"input":57845,"output":74,"reasoning":0,"cache":{"write":0,"read":0}},"cost":0}}
+{"type":"step_start","timestamp":1788956619819,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"id":"prt_g001a0861fb429001Em13BY7ln","messageID":"msg_g001a0861f55f2001yiu3SAQvn","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","snapshot":"5bfd5ad858772d2f50d4fb88329d3a0e4e7656d2","type":"step-start"}}
+{"type":"text","timestamp":1788956620994,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"id":"prt_g001a0861fb59b001q9aiTsgzR","messageID":"msg_g001a0861f55f2001yiu3SAQvn","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","type":"text","text":"Line citations check out so far (:78-79, :147-151, :154, :187, :200-212, :217, :228-231 all match). Verifying the remaining cited spots: the outgoing/incoming edge queries (:254/:275) and the dead docstring at :37.","time":{"start":1788956620187,"end":1788956620991}}}
+{"type":"tool_use","timestamp":1788956621005,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"type":"tool","tool":"read","callID":"call_96070d79ed864d3599bcaf83","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/src/rune/graph_memory.py","limit":18,"offset":30},"output":"<path>/mnt/workdrive/issue161-harness/src/rune/graph_memory.py</path>\n<type>file</type>\n<content>\n30:   graph_memory.py add <subj> <pred> <obj> --type subj_type --evidence \"...\"\n31:                        [--source X] [--confidence 0.0-1.0] [--strength N]\n32:   graph_memory.py add-bulk <json-file>\n33:   graph_memory.py query <entity-or-concept> [--hops N] [--latest-only]\n34:   graph_memory.py resolve <name>\n35:   graph_memory.py neighbors <entity>\n36:   graph_memory.py stats\n37:   graph_memory.py superseded-by <subj> <pred> <obj>  (manual conflict flag)\n38: \"\"\"\n39: \n40: import argparse\n41: import json\n42: import os\n43: import sqlite3\n44: import sys\n45: from collections import deque\n46: from datetime import datetime, timezone\n47: \n\n(Showing lines 30-47 of 416. Use offset=48 to continue.)\n</content>","metadata":{"preview":"  graph_memory.py add <subj> <pred> <obj> --type subj_type --evidence \"...\"\n                       [--source X] [--confidence 0.0-1.0] [--strength N]\n  graph_memory.py add-bulk <json-file>\n  graph_memory.py query <entity-or-concept> [--hops N] [--latest-only]\n  graph_memory.py resolve <name>\n  graph_memory.py neighbors <entity>\n  graph_memory.py stats\n  graph_memory.py superseded-by <subj> <pred> <obj>  (manual conflict flag)\n\"\"\"\n\nimport argparse\nimport json\nimport os\nimport sqlite3\nimport sys\nfrom collections import deque\nfrom datetime import datetime, timezone\n","truncated":true,"loaded":[]},"title":"src/rune/graph_memory.py","time":{"start":1788956620992,"end":1788956621003}},"id":"prt_g001a0861fb5a7001T0osh0u24","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","messageID":"msg_g001a0861f55f2001yiu3SAQvn"}}
+{"type":"tool_use","timestamp":1788956621007,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"type":"tool","tool":"read","callID":"call_14647c4e0c2e42fc8f206933","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/src/rune/graph_memory.py","limit":45,"offset":240},"output":"<path>/mnt/workdrive/issue161-harness/src/rune/graph_memory.py</path>\n<type>file</type>\n<content>\n240:     seen = {eid}\n241:     frontier = deque([(eid, 0)])\n242:     while frontier:\n243:         cur, depth = frontier.popleft()\n244:         if depth > hops:\n245:             break\n246:         sql = \"\"\"\n247:             SELECT e.id AS sid, e.name AS sname, e.type AS stype,\n248:                    ed.pred, o.id AS oid, o.name AS oname, o.type AS otype,\n249:                    ed.valid_from, ed.valid_until, ed.confidence, ed.status,\n250:                    ed.source, ed.evidence\n251:             FROM edges ed\n252:             JOIN entities e ON ed.subj_id=e.id\n253:             JOIN entities o ON ed.obj_id=o.id\n254:             WHERE ed.subj_id=? AND ed.status='active'\n255:         \"\"\"\n256:         params = [cur]\n257:         for r in db.execute(sql, params):\n258:             results.append({\n259:                 \"subject\": r[\"sname\"], \"predicate\": r[\"pred\"],\n260:                 \"object\": r[\"oname\"], \"confidence\": r[\"confidence\"],\n261:                 \"from\": r[\"valid_from\"], \"until\": r[\"valid_until\"],\n262:                 \"status\": r[\"status\"], \"source\": r[\"source\"],\n263:             })\n264:             if r[\"oid\"] not in seen:\n265:                 seen.add(r[\"oid\"])\n266:                 if depth + 1 <= hops:\n267:                     frontier.append((r[\"oid\"], depth + 1))\n268:     # Also include edges where this entity is the object (incoming).\n269:     sql = \"\"\"\n270:         SELECT s.name AS sname, ed.pred, o.name AS oname, o.type AS otype,\n271:                ed.valid_from, ed.valid_until, ed.confidence, ed.status, ed.source\n272:         FROM edges ed\n273:         JOIN entities s ON ed.subj_id=s.id\n274:         JOIN entities o ON ed.obj_id=o.id\n275:         WHERE ed.obj_id=? AND ed.status='active'\n276:     \"\"\"\n277:     for r in db.execute(sql, (eid,)):\n278:         results.append({\n279:             \"subject\": r[\"sname\"], \"predicate\": r[\"pred\"],\n280:             \"object\": r[\"oname\"], \"confidence\": r[\"confidence\"],\n281:             \"from\": r[\"valid_from\"], \"until\": r[\"valid_until\"],\n282:             \"status\": r[\"status\"], \"source\": r[\"source\"],\n283:         })\n284:     return {\"entity\": name, \"type\": etype, \"facts\": results}\n\n(Showing lines 240-284 of 416. Use offset=285 to continue.)\n</content>","metadata":{"preview":"    seen = {eid}\n    frontier = deque([(eid, 0)])\n    while frontier:\n        cur, depth = frontier.popleft()\n        if depth > hops:\n            break\n        sql = \"\"\"\n            SELECT e.id AS sid, e.name AS sname, e.type AS stype,\n                   ed.pred, o.id AS oid, o.name AS oname, o.type AS otype,\n                   ed.valid_from, ed.valid_until, ed.confidence, ed.status,\n                   ed.source, ed.evidence\n            FROM edges ed\n            JOIN entities e ON ed.subj_id=e.id\n            JOIN entities o ON ed.obj_id=o.id\n            WHERE ed.subj_id=? AND ed.status='active'\n        \"\"\"\n        params = [cur]\n        for r in db.execute(sql, params):\n            results.append({\n                \"subject\": r[\"sname\"], \"predicate\": r[\"pred\"],","truncated":true,"loaded":[]},"title":"src/rune/graph_memory.py","time":{"start":1788956620994,"end":1788956621006}},"id":"prt_g001a0861fb5ab001bmq5yEXX3","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","messageID":"msg_g001a0861f55f2001yiu3SAQvn"}}
+{"type":"step_finish","timestamp":1788956621034,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"id":"prt_g001a0861fb8cf001T0Tf342E1","reason":"tool-calls","snapshot":"38ba8e6e9c3a714aac1bd9c13efe573af7ae2060","messageID":"msg_g001a0861f55f2001yiu3SAQvn","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","type":"step-finish","tokens":{"total":59978,"input":1768,"output":354,"reasoning":0,"cache":{"write":0,"read":57856}},"cost":0}}
+{"type":"step_start","timestamp":1788956647072,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"id":"prt_g001a086201e9e001kDbxklA4h","messageID":"msg_g001a0861fb90d001Zcrk91Ejg","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","snapshot":"6d6903e274905229bd35c444ad6d77a74d45eec6","type":"step-start"}}
+{"type":"text","timestamp":1788956668558,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"id":"prt_g001a0862021530020ldGhlZs9","messageID":"msg_g001a0861fb90d001Zcrk91Ejg","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","type":"text","text":"All line citations verified against the live source (`issue161-harness/src/rune/graph_memory.py`): `now_iso` at :78-79, unordered alias lookup at :147-151, entity creation at :152-155, supersede block at :206-208, alias `INSERT OR IGNORE` at :209-212, `query` signature at :217, bare `LIMIT 1` at :228-231, `status='active'` filters at :254/:275, dead docstring at :37 — every anchor matches. The round-2 synthesis demonstrably resolves all three round-1 QUALIFY findings. Writing the PROCEED verdict.","time":{"start":1788956647764,"end":1788956668555}}}
+{"type":"tool_use","timestamp":1788956668562,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"type":"tool","tool":"write","callID":"call_f5b2513af1484c4bb9d99453","state":{"status":"completed","input":{"content":"{\n  \"outcome\": \"PROCEED\",\n  \"findings\": [\n    \"INTERFACE CONCRETE: the round-1 INTERFACE GAP (M3/FTS5) is resolved by committed design, not delegation — non-contentless DDL 'CREATE VIRTUAL TABLE graph_lex USING fts5(name, alias, entity_id UNINDEXED, tokenize=''unicode61'')', one row per (entity_id, text) over entities.name ∪ aliases.alias, entity_id UNINDEXED as the sole row→entity mapping, INSERT-only maintenance (name-row on entity creation at :152-155; alias-row only when INSERT OR IGNORE rowcount==1 at :209-212), and a named rebuild-lex bulk path. A coder can implement every piece without inventing structure. The rejected contentless and rowid-packed alternatives are documented with reasons, preventing silent resurrection.\",\n    \"INTERFACE CONCRETE: M1a supersede fix is a verbatim UPDATE (status, superseded_by, valid_until) pinned to graph_memory.py:206-208, using the same ts from :187; the empty-DB premise for free backfill is independently verified (adversarial A1/A5 live-DB receipts: 0 entities/aliases/edges, 0 valid_until non-null).\",\n    \"INTERFACE CONCRETE: normalize_as_of() is fully specified — accepted input forms ('Z' suffix, '-05:00' offset, fractional seconds), output format (UTC '+00:00', timespec='seconds' matching now_iso at :78-79), failure mode (ValueError, never lexicographic comparison of raw input), and the exact filter clause replacement at both :254 and :275.\",\n    \"PARAMETER CONCRETE: the round-1 PARAMETER GAP is closed — N=4 weeks and <50-edges threshold are pre-committed in INV-5, sequence step 9, AC9, and test_population_gate_harness, with an explicit no-rechoice-after-observation rule.\",\n    \"MINOR GAP CLOSED: the alias sort key is named verbatim (ORDER BY a.entity_id ASC at BOTH :228-231 and :147-151), matching the two nondeterminism sites actually present in the source; INV-8 and its test are now mechanically checkable.\",\n    \"SEQUENCE IMPLEMENTABLE: steps 0-9 are in dependency order (pre-flight selector check → write-side M1a+tests → normalize_as_of → population gate check → as-of filter → FTS5 projection → kill tests → selector-floor test → docs → T5 evaluation); no step requires an artifact built by a later step, and the read-layer-before-write-side ordering hazard is explicitly gated (steps 1, 3; AC10).\",\n    \"ACCEPTANCE CRITERIA OBSERVABLE: AC1-AC7 and AC9 map 1:1 to the 12 required tests, each with concrete pass/fail conditions (exact edge counts at pinned timestamps, ≥30% held-out resolution AND floor survival at memory_selector output, ≤10% latency delta with commits held constant, roundtrip row-set equality). AC8 is a documentation check with the exact replacement characterization quoted; AC10 is verifiable from change history.\",\n    \"AUTHORITY BOUNDARIES RESPECTED: graph_memory remains sole writer to graph.sqlite; graph_lex lives inside the same DB as a rebuildable projection (no second store, no second writer); memory_selector._graphs_recall and curator/sleep-time write paths are explicitly non-modification targets; the M7 constraint pre-applies to any future C9 sidecar. No new authority paths introduced.\",\n    \"ROLLBACK REAL: all changes are additive to a single SQLite file — remove --as-of and the FTS5 tier (default path restored exactly per INV-10, guarded by test_as_of_default_path_unchanged), DROP graph_lex (projection, no data loss), and M1a stands alone backward-compatibly (NULL valid_until remains interpretable as open-ended; no legacy backfill exists to unwind). No migration, service, or export involved.\",\n    \"CODE ANCHORS VERIFIED: spot-checked all load-bearing line citations against src/rune/graph_memory.py — now_iso :78-79, alias lookup :147-151, entity insert :152-155, supersede :206-208, alias INSERT OR IGNORE :209-212, commit :213, query signature :217, LIMIT 1 :228-231, active filters :254/:275, dead docstring :37. All match; the dossier can be handed over verbatim.\"\n  ],\n  \"reopen\": null\n}\n","file_path":"/mnt/workdrive/issue161-harness/research/issue-163/qualify.json"},"output":"Wrote file successfully.","metadata":{"diagnostics":{},"diff":"Index: /mnt/workdrive/issue161-harness/research/issue-163/qualify.json\n===================================================================\n--- /mnt/workdrive/issue161-harness/research/issue-163/qualify.json\n+++ /mnt/workdrive/issue161-harness/research/issue-163/qualify.json\n@@ -1,8 +1,16 @@\n {\n-  \"outcome\": \"REFINE_SYNTHESIS\",\n+  \"outcome\": \"PROCEED\",\n   \"findings\": [\n-    \"INTERFACE GAP (M3/FTS5 projection — blocks verbatim handoff): the declared DDL 'CREATE VIRTUAL TABLE graph_lex USING fts5(name, alias, content='')' cannot be implemented as specified without the coder inventing a design. (a) ALine truncated
+{"type":"step_finish","timestamp":1788956668588,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"id":"prt_g001a086207292001sP3CCRuoM","reason":"tool-calls","snapshot":"2ebbbdbfea33c8d3de8341c43c1be5bf47c4ee11","messageID":"msg_g001a0861fb90d001Zcrk91Ejg","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","type":"step-finish","tokens":{"total":62301,"input":1014,"output":1639,"reasoning":0,"cache":{"write":0,"read":59648}},"cost":0}}
+{"type":"step_start","timestamp":1788956676808,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"id":"prt_g001a0862092ba001PkDcUCBKN","messageID":"msg_g001a0862072d50017PXc1t7g0","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","snapshot":"cffce81fdae55b2b95f1ac24770eb692d500d13d","type":"step-start"}}
+{"type":"text","timestamp":1788956686040,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"id":"prt_g001a0862092d0002V2wl53gTb","messageID":"msg_g001a0862072d50017PXc1t7g0","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","type":"text","text":"QUALIFY review complete — verdict written to `research/issue-163/qualify.json`.\n\n**Outcome: PROCEED**\n\nWhat I checked (implementation-readiness only):\n\n1. **Round-1 findings resolved** — The prior QUALIFY verdict had 3 gaps. Round 2 closes all three by *committing* decisions rather than delegating: the FTS5 layout (non-contentless, one row per `(entity_id, text)`, `entity_id UNINDEXED` as sole mapping, INSERT-only protocol), the T5 gate parameters (N=4 weeks, <50 edges, pre-committed with a no-rechoice rule), and the alias sort key (`ORDER BY a.entity_id ASC` at both nondeterminism sites).\n\n2. **Code anchors verified against live source** — I spot-checked every load-bearing line citation in `graph_memory.py`: `now_iso` (:78-79), alias lookup (:147-151), supersede block (:206-208), alias `INSERT OR IGNORE` (:209-212), bare `LIMIT 1` (:228-231), `status='active'` filters (:254/:275), dead docstring (:37). All match — the handoff is verbatim-executable.\n\n3. **The five readiness checks:**\n   - *Interfaces*: all concrete (M1a UPDATE, `normalize_as_of` with accepted/error forms, graph_lex DDL + maintenance, CLI, deterministic ordering) — no coder guesswork required.\n   - *Sequence*: steps 0-9 are dependency-ordered; write-side-before-read-layer is explicitly gated (AC10).\n   - *Acceptance criteria*: AC1-AC7/AC9 map 1:1 to 12 tests with measurable pass conditions; AC8/AC10 are mechanically verifiable.\n   - *Authority boundaries*: respected — graph_memory stays sole writer, graph_lex is a same-DB projection, selector and curator paths are non-modification targets.\n   - *Rollback*: real — additive-only changes, projection DROP is lossless, M1a backward-compatible, default path restored exactly (INV-10 guarded by a test).\n\nNo `reopen` needed — nothing new surfaced that earlier gates could have missed.","time":{"start":1788956676816,"end":1788956686038}}}
+{"type":"step_finish","timestamp":1788956686063,"sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","part":{"id":"prt_g001a08620b6d80013e1DyhZz0","reason":"stop","snapshot":"d398f1b9182b8b9b28a1fa45ec1fdf096289e963","messageID":"msg_g001a0862072d50017PXc1t7g0","sessionID":"ses_-ffe5f79e20228ffeq2voHZxjl","type":"step-finish","tokens":{"total":62270,"input":1132,"output":466,"reasoning":0,"cache":{"write":0,"read":60672}},"cost":0}}
@@ -0,0 +1,33 @@
+{"type":"step_start","timestamp":1788955801271,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"id":"prt_g001a0861336b4001LvNyLbAOr","messageID":"msg_g001a0861320ec001EMlKL2AuH","sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","snapshot":"c2ce0b10c4c71c931f26e81651bc9c0cdaac581b","type":"step-start"}}
+{"type":"text","timestamp":1788956038731,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"id":"prt_g001a08616c9fc001shKnAeHuA","messageID":"msg_g001a0861320ec001EMlKL2AuH","sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","type":"text","text":"I'll start with the mandated skill search, and in parallel locate the prior-stage artifacts and the code files the mitigations reference, so the synthesis is grounded in the actual repo rather than guesswork.","time":{"start":1788956035581,"end":1788956038728}}}
+{"type":"tool_use","timestamp":1788956038737,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"type":"tool","tool":"skill_search","callID":"call_d85c3e346f214f41a83c3666","state":{"status":"completed","input":{"query":"Write a structured JSON design-decision dossier (synthesis stage) from settled research findings for a software issue; input: prior stage artifacts and constraints; output: research/issue-163/synthesis.json with selected_design, invariants, tests; audience: coding worker. No external research."},"output":"{\n  \"status\": \"matched\",\n  \"results\": [\n    {\n      \"skill_id\": \"design-blueprint\",\n      \"name\": \"design-blueprint\",\n      \"score\": 0.6083,\n      \"reason\": \"The skill description matches these query terms: structured, design, decision, artifact.\"\n    },\n    {\n      \"skill_id\": \"product-design\",\n      \"name\": \"product-design\",\n      \"score\": 0.5733,\n      \"reason\": \"The skill description matches these query terms: design, research, selected.\"\n    },\n    {\n      \"skill_id\": \"frontend-design\",\n      \"name\": \"frontend-design\",\n      \"score\": 0.5685,\n      \"reason\": \"The skill description matches these query terms: design, artifact, constraint.\"\n    }\n  ],\n  \"loaded_skill_id\": null\n}","metadata":{"status":"matched","loadedSkillID":null,"truncated":false},"title":"Found 3 skills","time":{"start":1788956038730,"end":1788956038733}},"id":"prt_g001a08616d4da001a186pbSDp","sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","messageID":"msg_g001a0861320ec001EMlKL2AuH"}}
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+{"type":"step_finish","timestamp":1788956038792,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"id":"prt_g001a08616d66e0012ax6SSx28","reason":"tool-calls","snapshot":"118effec57af272e83a862094721e0c094298ffc","messageID":"msg_g001a0861320ec001EMlKL2AuH","sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","type":"step-finish","tokens":{"total":40012,"input":30172,"output":158,"reasoning":9618,"cache":{"write":0,"read":64}},"cost":0}}
+{"type":"step_start","timestamp":1788956044255,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"id":"prt_g001a08616ebdc001NCmFEfF0I","messageID":"msg_g001a08616d6ab0011Uav9RIVf","sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","snapshot":"23ab9a615f7f7a03fb1d91c01f25460e3c059993","type":"step-start"}}
+{"type":"text","timestamp":1788956054024,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"id":"prt_g001a08617062e001sf1UqVnZw","messageID":"msg_g001a08616d6ab0011Uav9RIVf","sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","type":"text","text":"Skill search returned only visual-design skills (for slides/landing pages) — none matches a JSON design-dossier synthesis, so I'll proceed without a skill. Now reading the prior-stage artifacts and the referenced source files to ground the dossier.","time":{"start":1788956050990,"end":1788956054021}}}
+{"type":"tool_use","timestamp":1788956054036,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"type":"tool","tool":"read","callID":"call_03aaa7b7008841128ab23887","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/research/issue-163/applicability.json"},"output":"<path>/mnt/workdrive/issue161-harness/research/issue-163/applicability.json</path>\n<type>file</type>\n<content>\n1: {\n2:   \"stage\": \"APPLICABILITY\",\n3:   \"issue\": 163,\n4:   \"round\": 1,\n5:   \"process_id\": \"research-163-r1\",\n6:   \"grounding\": {\n7:     \"inward_claims_used\": [\"I3\", \"I1\", \"I4\", \"I5\"],\n8:     \"rune_reality\": \"src/rune/graph_memory.py is Rune's entire graph surface: a headless SQLite tier at memory/graph/graph.sqlite (no external graph DB dependency). Schema (lines 101-116) already implements: bi-temporal edges (valid_from/valid_until + learned_at), supersede-never-delete with status/superseded_by, per-edge provenance (evidence/source), confidence-gated writes (strength<3 gated out), typed concept-mediated nodes, and alias-based entity resolution. Query is name/alias/substring entry point + BFS over status='active' edges.\",\n9:     \"load_bearing_fact\": \"The dossier's repo_grounding_note and Graphiti (E17) confirm temporal semantics live at the framework layer above any backend. Rune already occupies that layer over SQLite. Neo4j and FalkorDB would be backends BELOW a layer Rune already owns, and neither offers native temporal versioning (E27, E28) - Rune's schema is already ahead of both on the spike's titular dimension.\"\n10:   },\n11:   \"candidates\": [\n12:     {\n13:       \"id\": \"C1\",\n14:       \"candidate\": \"Neo4j as replacement graph backend\",\n15:       \"source_ids\": [\"O1\", \"O2\", \"O38\", \"O41\"],\n16:       \"classification\": \"CONFLICTS_WITH_RUNE\",\n17:       \"integration_point\": \"Would replace src/rune/graph_memory.py's SQLite tier (memory/graph/graph.sqlite) with a server-backed Neo4j deployment reachable from curator.py / sleep_time.py.\",\n18:       \"benefit\": \"Deepest ecosystem, best planner on heavy aggregations (E3), mature tooling (E8).\",\n19:       \"cost\": \"Server + JVM process to operate; ~2.7GB heap for a 381K-node graph, ~5.2GB process RSS (E6) - two orders of magnitude above Rune's sub-1M-entity regime; 90ms cold start vs embedded alternatives (E4).\",\n20:       \"architectural_fit\": \"Poor. Rune is embedded/local-first with zero external service dependencies (I3: 'reachable by the sleep-time curator directly, no MCP dependency'). A networked JVM server reverses that posture. No source benchmarks Rune's single-node regime (dossier limitation #2).\",\n21:       \"authority_implications\": \"Introduces an external service and credentials into the memory tier; curator/sleep-time write authority would route through a network daemon instead of a local file.\",\n22:       \"risks\": \"Licensing (Community vs Enterprise constraints unevidenced, dossier limitation #5); no native temporal versioning - the spike's core dimension (E28-E30); migration cost for zero evidenced benefit at Rune's scale.\",\n23:       \"required_adaptation\": \"None - rejection is the correct disposition.\",\n24:       \"evidence\": [\"E2\", \"E3\", \"E4\", \"E6\", \"E8\", \"E27\", \"E28\", \"E29\"]\n25:     },\n26:     {\n27:       \"id\": \"C2\",\n28:       \"candidate\": \"FalkorDB as replacement graph backend\",\n29:       \"source_ids\": [\"O1\", \"O2\", \"O5\", \"O29\", \"O10\"],\n30:       \"classification\": \"CONFLICTS_WITH_RUNE\",\n31:       \"integration_point\": \"Would replace the SQLite tier; only embedded path is Graphiti's falkordblite extra (redislite-based, Python 3.12+) per E16.\",\n32:       \"benefit\": \"Strong concurrent throughput and low latency at scale (E2, E3, E9), implicit indexing (E5), GraphRAG positioning (E10).\",\n33:       \"cost\": \"Server-shaped: Redis 7.4 module, own container/ports, min 4GB RAM / 16GB recommended (E12, E25, E26). SSPLv1 core license (E25). Rust core rewrite (E11) resets part of the maturity story (dossier contradiction #3).\",\n34:       \"architectural_fit\": \"Poor. The headline advantages (6.7x throughput, p50/p99 wins) were measured on 381K-804K-element graphs under 8-32 thread concurrency (E1, E9) - not Rune's regime (single-node, sub-1M entities, agent-local). Vendor magnitudes are marketing-adjacent (dossier contradiction #1; O5 benchmark harness README unverifiable, E13).\",\n35:       \"authority_implications\": \"A Redis server in the memory path; even falkordblite drags in a redislite dependency and a Python 3.12 floor for a lateral move from SQLite.\",\n36:       \"risks\": \"RedisGraph lineage EOL'd Jan 2025 (dossier contradiction #3); no evidenced FalkorDB-native temporal features (dossier limitation #4); license incompatibility with Rune's MIT-family posture.\",\n37:       \"required_adaptation\": \"None - rejection is the correct disposition.\",\n38:       \"evidence\": [\Line truncated
+{"type":"tool_use","timestamp":1788956054038,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"type":"tool","tool":"read","callID":"call_2077d80c062240e68776d9c8","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/research/issue-163/qualify.json"},"output":"<path>/mnt/workdrive/issue161-harness/research/issue-163/qualify.json</path>\n<type>file</type>\n<content>\n1: {\n2:   \"outcome\": \"REFINE_SYNTHESIS\",\n3:   \"findings\": [\n4:     \"INTERFACE GAP (M3/FTS5 projection — blocks verbatim handoff): the declared DDL 'CREATE VIRTUAL TABLE graph_lex USING fts5(name, alias, content='')' cannot be implemented as specified without the coder inventing a design. (a) A contentless FTS5 table has no unindexed columns, so no mapping from FTS rows back to entity ids is specified — yet the FTS5 BM25 resolution tier must return an entity id (rowid=entities.id convention vs. join-on-name are both viable and mutually incompatible). (b) The 1:N entity→aliases relation is unrepresented: the two-column DDL permits one-row-per-entity with packed aliases (packing format unspecified) or one-row-per-alias (which breaks id mapping); nothing selects between them. (c) 'Rows maintained on the existing entity/alias write path (resolve_entity, add_edge)' is not mechanically implementable for a contentless table: add_edge inserts new aliases for already-existing entities (graph_memory.py:209-212), which requires updating that entity's FTS row, and contentless FTS5 supports no UPDATE — the coder would have to invent a delete+reinsert protocol. Required fix: specify the row layout and id mapping (e.g., a non-contentless graph_lex with an entity_id column, or rowid=entities.id with one row per entity and a defined alias-packing format), or explicitly delegate the choice the way the tokenizer decision is delegated.\",\n5:     \"PARAMETER GAP (T5/INV-5/AC9 — blocks test_population_gate_harness and sequence step 9): N is never committed. Step 9 says 'after N weeks of real use (N fixed in advance)', INV-5 says 'over N weeks of real use', and AC9 requires 'a pre-committed N and threshold' — but only the threshold (<50 edges) is given; N remains symbolic throughout the artifact. The coding worker cannot finalize the T5 harness or execute step 9 without inventing N, a value the artifact itself assigns to pre-commitment. Required fix: commit a concrete N (e.g., N=4 weeks) in the synthesis.\",\n6:     \"MINOR GAP (M3/INV-8 — non-blocking but unpinned): the deterministic alias ordering is specified only as 'ORDER BY added, replacing the bare LIMIT 1 at :228-231' without naming the sort key. INV-8 and test_alias_resolution_deterministic pin the observable property (any stable key satisfies them), so a competent coder can proceed, but naming the key (e.g., ORDER BY a.entity_id ASC) would make the instruction verbatim.\"\n7:   ]\n8: }\n\n(End of file - total 8 lines)\n</content>","metadata":{"preview":"{\n  \"outcome\": \"REFINE_SYNTHESIS\",\n  \"findings\": [\n    \"INTERFACE GAP (M3/FTS5 projection — blocks verbatim handoff): the declared DDL 'CREATE VIRTUAL TABLE graph_lex USING fts5(name, alias, content='')' cannot be implemented as specified without the coder inventing a design. (a) A contentless FTS5 table has no unindexed columns, so no mapping from FTS rows back to entity ids is specified — yet the FTS5 BM25 resolution tier must return an entity id (rowid=entities.id convention vs. join-on-name are both viable and mutually incompatible). (b) The 1:N entity→aliases relation is unrepresented: the two-column DDL permits one-row-per-entity with packed aliases (packing format unspecified) or one-row-per-alias (which breaks id mapping); nothing selects between them. (c) 'Rows maintained on the existing entity/alias write path (resolve_entity, add_edge)' is not mechanically implementable for a contentless table: add_edge inserts new aliases for already-existing entities (graph_memory.py:209-212), which requires updating that entity's FTS row, and contentless FTS5 supports no UPDATE — the coder would have to invent a delete+reinsert protocol. Required fix: specify the row layout and id mapping (e.g., a non-contentless graph_lex with an entity_id column, or rowid=entities.id with one row per entity and a defined alias-packing format), or explicitly delegate the choice the way the tokenizer decision is delegated.\",\n    \"PARAMETER GAP (T5/INV-5/AC9 — blocks test_population_gate_harness and sequence step 9): N is never committed. Step 9 says 'after N weeks of real use (N fixed in advance)', INV-5 says 'over N weeks of real use', and AC9 requires 'a pre-committed N and threshold' — but only the threshold (<50 edges) is given; N remains symbolic throughout the artifact. The coding worker cannot finalize the T5 harness or execute step 9 without inventing N, a value the artifact itself assigns to pre-commitment. Required fix: commit a concrete N (e.g., N=4 weeks) in the synthesis.\",\n    \"MLine truncated
+{"type":"tool_use","timestamp":1788956054040,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"type":"tool","tool":"read","callID":"call_b5b3ab67a1324e1db1ac67ad","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/research/issue-163/innovation.json"},"output":"<path>/mnt/workdrive/issue161-harness/research/issue-163/innovation.json</path>\n<type>file</type>\n<content>\n1: {\n2:   \"stage\": \"INNOVATION\",\n3:   \"issue\": 163,\n4:   \"round\": 1,\n5:   \"process_id\": \"research-163-r1\",\n6:   \"route\": \"INNOVATION_WARRANTED\",\n7:   \"conclusion\": \"ADAPT\",\n8:   \"conclusion_rationale\": \"The standard mechanism (SQLite graph tier queried via status='active' only, exact/alias/substring entry resolution) is NOT sufficient: it cannot read the bi-temporal history Rune already persists (every superseded edge is stored but unreachable through query()), and its entry point caps practical recall on paraphrase/typo. No standard drop-in closes either gap. However, the warranted innovation is strictly adapted-and-compositional, not novel-for-its-own-sake: NEP-001's AS-OF WHERE-convention (E28-E30) and Graphiti's hybrid-retrieval entry tier (E18) are adapted onto Rune's existing framework-over-SQLite layer (which already implements the semantic model 1:1, E14/E17 — C4), producing a 'temporal+lexical query layer over graph.sqlite'. Backend migration is explicitly out of scope (C1/C2/C3 rejected or deferred at APPLICABILITY; C9 tracked, not proposed).\",\n9:   \"candidates\": [\n10:     {\n11:       \"id\": \"INN-1\",\n12:       \"category\": \"ADAPT\",\n13:       \"proposal\": \"A unified temporal+lexical query layer over the existing graph.sqlite, inside src/rune/graph_memory.py, with zero schema or backend change. Two read-layer components that share one integration surface (query(), lines 217-284): (1) TEMPORAL — an --as-of <iso8601> parameter that replaces the status='active' filter with valid_from <= t AND (valid_until IS NULL OR t < valid_until) AND learned_at <= t, applied identically to the outgoing BFS frontier (line 254) and the incoming-edge query (line 275); BFS structure unchanged; default behavior (no flag) keeps the current active-only fast path. (2) LEXICAL — a SQLite FTS5 virtual table over entities(name, summary) and aliases(alias), inserted as a fallback tier in entity resolution (lines 224-237) with lookup order exact -> alias -> FTS5 BM25 -> substring-LIKE; index maintained on the existing entity/alias write path (resolve_entity, add_edge) in the same DB file. Full embedding tier deliberately omitted — model dependencies are disproportionate to Rune's sub-1M regime.\",\n14:       \"derived_from\": [\"E28\", \"E29\", \"E30\", \"E18\", \"E14\", \"E17\", \"E27\"],\n15:       \"source_ids\": [\"O38\", \"O41\", \"O10\", \"O1\"],\n16:       \"composition_of\": [\n17:         \"C5 (NEP-001 Phase 1 'AS OF' syntactic sugar, APPLICABLE_WITH_ADAPTATION)\",\n18:         \"C6 (Graphiti hybrid retrieval, reduced to its lexical BM25 tier, APPLICABLE_WITH_ADAPTATION)\",\n19:         \"Rune's existing bi-temporal edges schema + supersede-not-delete history (already integrated per C4)\"\n20:       ],\n21:       \"novelty\": \"compositional\",\n22:       \"expected_gain\": \"Two material capabilities the status quo lacks, both read-only on data already on disk: (a) time-travel queries — every contradiction ever superseded becomes queryable as-of any past timestamp, closing the exact gap NEP-001 documents (E29: hand-written temporal WHERE clauses are error-prone and do not compose; E30: Phase 1 is low complexity and delivers most of the value); (b) recall lift at the entry point — paraphrase/typo/alternate-naming terms that currently fail resolution fall through to BM25, which Graphiti credits for its sub-second retrieval (E18), without any new service or dependency (FTS5 is in-process SQLite). Combined, the graph's stored history and practical recall stop being capped by the two read-layer shortcuts.\",\n23:       \"risks\": \"(1) learned_at is a transaction-time proxy, not true bitemporality (E30 defers the real thing at 'Very high' complexity) — must be documented as as-of-knowledge approximation. (2) Half-open-interval and NULL-as-open-ended pitfalls are the documented failure mode of exactly this convention (E29) — they become a mandatory test checklist, not an afterthought. (3) FTS5 write amplification on add-bulk paths and index/tokenizer decisions. (4) BM25 ranking quality is evidenced only via Graphiti's claim, not measured at Rune's regime (dossier limitation #7) — hence the kill test below. (5) No Rune-regime benchmark exists (dossier limitation #2), so gains are predicted, not measured, until the kill test runs.\",\n24:       \"kill_test\": \"Rune-local benchmark on the real curator vocabulary and a seeded history: (a) TEMPORAL — if querying as-of realistic historical timestamps returns fact sets identical to the active-only set for every t Line truncated
+{"type":"tool_use","timestamp":1788956054049,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"type":"tool","tool":"read","callID":"call_e0ef9e81d5be4f8f9101efe6","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/research/issue-163/adversarial.json"},"output":"<path>/mnt/workdrive/issue161-harness/research/issue-163/adversarial.json</path>\n<type>file</type>\n<content>\n1: {\n2:   \"stage\": \"ADVERSARIAL\",\n3:   \"issue\": 163,\n4:   \"round\": 1,\n5:   \"process_id\": \"research-163-r1\",\n6:   \"attacked\": [\n7:     \"C4\",\n8:     \"C5\",\n9:     \"C6\",\n10:     \"C9\",\n11:     \"INN-1\"\n12:   ],\n13:   \"surviving_candidates\": [\n14:     {\n15:       \"id\": \"C4\",\n16:       \"disposition\": \"SURVIVES_WITH_DOWNGRADE\",\n17:       \"note\": \"The claim 'implements E14's model 1:1' is contradicted by the code (attacks A1, A11): the tier is a transaction-time append log with same-triple supersession, NOT a bi-temporal model with automatic contradiction invalidation. The candidate survives as 'partially integrated'; downstream dossiers must not repeat the 1:1 characterization.\"\n18:     },\n19:     {\n20:       \"id\": \"C5\",\n21:       \"disposition\": \"SURVIVES_ONLY_IN_CORRECTED_FORM\",\n22:       \"note\": \"AS-OF time-travel over preserved history is a real, low-cost capability \\u2014 but the INN-1 filter formulation is falsified (attack A2). Survives only via mitigation M1: either write valid_until on supersede (one line) or implement transaction-time as-of (learned_at + superseded_by chain) and drop the valid-time half until a writer populates valid windows.\"\n23:     },\n24:     {\n25:       \"id\": \"C6\",\n26:       \"disposition\": \"SURVIVES_CONDITIONAL\",\n27:       \"note\": \"Mechanism is sound and FTS5 is available (verified: sqlite 3.53.4 in this runtime). But the benefit chain is broken twice today: the production graph is EMPTY (attack A5) and graph recall is re-floored by memory_selector (attack A6). Survives only with the projection-rule framing (M3), selector-floor test (M4), and write-side sequencing (M5).\"\n28:     },\n29:     {\n30:       \"id\": \"C9\",\n31:       \"disposition\": \"SURVIVES_TRACK_ONLY\",\n32:       \"note\": \"Uncontested as a future lead; attacks A9/A10 only constrain its future form: DuckDB/Arrow analytics must be a rebuildable read-only projection of graph.sqlite, never a second store, and must never acquire independent write authority.\"\n33:     }\n34:   ],\n35:   \"rejected_candidates\": [\n36:     {\n37:       \"id\": \"INN-1#temporal-filter-as-specified\",\n38:       \"reason\": \"REJECTED as literally specified \\u2014 do NOT carry to SYNTHESIS. The filter 'valid_from <= t AND (valid_until IS NULL OR t < valid_until) AND learned_at <= t' applied to the current writer's data returns STALE SUPERSEDED FACTS as if believed: supersede (graph_memory.py:207-208) sets status/superseded_by but never valid_until, so superseded edges remain NULL-open on the valid axis and pass all three predicates for every t after their creation. An as-of query would return the superseded AND superseding edges of a contradiction simultaneously \\u2014 presenting both sides of a contradiction as current knowledge, the exact failure the feature exists to prevent. C5 itself survives after rework (see surviving_candidates); this exact formulation does not. This is E29's documented NULL-as-open-ended pitfall realized in the proposal spec, not merely in hand-written Cypher.\"\n39:     }\n40:   ],\n41:   \"attacks\": [\n42:     {\n43:       \"id\": \"A1\",\n44:       \"target_candidate\": \"C4\",\n45:       \"dimension\": \"contradicting_evidence + weak_assumptions\",\n46:       \"finding\": \"The 'bi-temporal' claim is schema-only. valid_until is NEVER written anywhere in the repo (grep over src/rune: appears only in DDL line 107, INSERT writing NULL at line 201, and SELECTs); status='expired' has no writer; and valid_from and learned_at are both set to the SAME now_iso() call in the single INSERT (lines 200-204). The live production DB confirms: 0 edges where valid_until IS NOT NULL, 0 where valid_from <> learned_at. The tier is a transaction-time-only append log with supersession \\u2014 the valid-time axis of E14's model is declared but dead.\",\n47:       \"evidence\": \"graph_memory.py:107,200-204,207-208 (valid_until written NULL; valid_from=learned_at=ts); grep valid_until/superseded across src/rune (no writer); live DB receipt: read-only sqlite3 query against /mnt/workdrive/rune/memory/graph/graph.sqlite returned entities=0, aliases=0, edges=0, valid_until non-null=0, valid_from<>learned_at=0, superseded_by non-null=0\",\n48:       \"severity\": \"high\"\n49:     },\n50:     {\n51:       \"id\": \"A2\",\n52:       \"target_candidate\": \"C5 (via INN-1)\",\n53:       \"dimension\": \"failure_modes\",\n54:       \"finding\": \"As-of filter as specified returns stale superseded facts (see rejected_candidates for full mechanism). Line truncated
+{"type":"step_finish","timestamp":1788956054094,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"id":"prt_g001a086171220001ZtaijLzde","reason":"tool-calls","snapshot":"10ed6aa6a33aecd0eed36765cd0e2791297aa96c","messageID":"msg_g001a08616d6ab0011Uav9RIVf","sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","type":"step-finish","tokens":{"total":31671,"input":31236,"output":162,"reasoning":273,"cache":{"write":0,"read":0}},"cost":0}}
+{"type":"step_start","timestamp":1788956060932,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"id":"prt_g001a086172d02001O3hwD7oPv","messageID":"msg_g001a086171278001uhT25drcg","sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","snapshot":"3bd30576c078379a2d041271efbfae1d9fabb8c9","type":"step-start"}}
+{"type":"text","timestamp":1788956075553,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"id":"prt_g001a0861756b5001efg1BqkhS","messageID":"msg_g001a086171278001uhT25drcg","sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","type":"text","text":"The process artifacts are clear: C4/C5/C6/C9 survived with mitigations M1–M7, falsification tests T1–T6, and the QUALIFY round pins three gaps (FTS5 layout spec, committed N, named sort key) that I must resolve explicitly in the synthesis. Now I'll read the actual source modules to ground interfaces, plus check the existing synthesis.json before overwriting it.","time":{"start":1788956071605,"end":1788956075551}}}
+{"type":"tool_use","timestamp":1788956075566,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"type":"tool","tool":"read","callID":"call_d660468353f94956b647def5","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/src/rune/graph_memory.py"},"output":"<path>/mnt/workdrive/issue161-harness/src/rune/graph_memory.py</path>\n<type>file</type>\n<content>\n1: #!/usr/bin/env python3\n2: \"\"\"Graph memory tier — concept-mediated temporal knowledge graph for the agent.\n3: \n4: Built from the 2025-2026 academic frontier (briefs in\n5: `/tmp/opencode/memory-research/agentic-memory-brief.md` and\n6: `~/.firecrawl/claim-audit-2026/brief.md`). Exceeds the entity-hub approach by\n7: following the research convergence:\n8: \n9:   - CONCEPT-MEDIATED, not entity-centric (GAAMA 2603.27910): nodes are typed\n10:     (person / project / concept / tool / preference / fact), which kills the\n11:     \"mega-hub\" dilution Letta/Graphiti hit with one entity connected to\n12:     everything.\n13:   - BI-TEMPORAL edges (Graphiti 2501.13956): `valid_from/valid_until` (when\n14:     the fact is true in the world) + `learned_at` (when we learned it).\n15:   - INCREMENTAL construction (TG-RAG 2510.13590, iText2KG 2409.03284): merge\n16:     only, no full re-index; entity resolution via aliases, never blind merges.\n17:   - SUPERSEDE, never delete (Write-Time Gating 2603.15994, SSGM 2603.11768):\n18:     contradicting edges are marked superseded with the new one taking over;\n19:     history preserved for audit.\n20:   - WRITE-TIME GATING (2603.15994, D-MEM 2603.14597): routine/salience-weak\n21:     facts never touch the graph; surprises and contradictions do. The biggest\n22:     token saver in the literature.\n23:   - PROVENANCE on every edge (MemORAI 2605.01386): each edge carries the\n24:     evidence text + source, which is exactly what the claim-audit layer needs.\n25: \n26: Storage: headless SQLite at `memory/graph/graph.sqlite` — reachable by the\n27: sleep-time curator directly (no MCP dependency). Schema below.\n28: \n29: Usage:\n30:   graph_memory.py add <subj> <pred> <obj> --type subj_type --evidence \"...\"\n31:                        [--source X] [--confidence 0.0-1.0] [--strength N]\n32:   graph_memory.py add-bulk <json-file>\n33:   graph_memory.py query <entity-or-concept> [--hops N] [--latest-only]\n34:   graph_memory.py resolve <name>\n35:   graph_memory.py neighbors <entity>\n36:   graph_memory.py stats\n37:   graph_memory.py superseded-by <subj> <pred> <obj>  (manual conflict flag)\n38: \"\"\"\n39: \n40: import argparse\n41: import json\n42: import os\n43: import sqlite3\n44: import sys\n45: from collections import deque\n46: from datetime import datetime, timezone\n47: \n48: _SD = os.path.dirname(os.path.abspath(__file__))\n49: if _SD not in sys.path:\n50:     sys.path.insert(0, _SD)\n51: import memory_env\n52: \n53: MEM_DIR = memory_env.memory_dir()\n54: GRAPH_DIR = os.path.join(MEM_DIR, \"graph\")\n55: DB_PATH = os.path.join(GRAPH_DIR, \"graph.sqlite\")\n56: \n57: # Fixed predicate vocabulary — schema drift is a researched failure mode, so we\n58: # constrain the set of relationship types we accept. Unknown preds are refused\n59: # (the extractor maps free text onto this set).\n60: PREDICATES = {\n61:     \"works_on\", \"works_at\", \"teaches\", \"manages\", \"uses\", \"prefers\",\n62:     \"lives_in\", \"located_in\", \"has_role\", \"part_of\", \"leads\", \"builds\",\n63:     \"develops\", \"created\", \"interested_in\", \"knows\", \"collaborates_with\",\n64:     \"owned_by\", \"reports_to\", \"supports\", \"runs\", \"tracks\", \"related_to\",\n65:     \"based_on\", \"happens_on\", \"started_on\", \"ended_on\", \"responds_to\",\n66:     \"struggles_with\", \"likes\", \"dislikes\", \"avoided_by\", \"goal_of\",\n67: }\n68: \n69: # Node types.\n70: NODE_TYPES = {\"person\", \"project\", \"concept\", \"tool\", \"preference\",\n71:               \"organization\", \"place\", \"event\", \"skill\", \"artefact\"}\n72: \n73: # Confidence: evidence-gated (EvoKG-style f(frequency, recency, source_cred)).\n74: # We fold the curator's strength (0-5) into a 0-1 confidence.\n75: DEFAULT_CONF = 0.7\n76: \n77: \n78: def now_iso():\n79:     return datetime.now(timezone.utc).isoformat(timespec=\"seconds\")\n80: \n81: \n82: def connect():\n83:     os.makedirs(GRAPH_DIR, exist_ok=True)\n84:     db = sqlite3.connect(DB_PATH)\n85:     try:\n86:         db.row_factory = sqlite3.Row\n87:         db.executescript(\"\"\"\n88:         CREATE TABLE IF NOT EXISTS entities (\n89:             id INTEGER PRIMARY KEY AUTOINCREMENT,\n90:             name TEXT NOT NULL UNIQUE,\n91:             type TEXT NOT NULL DEFAULT 'concept',\n92:             summary TEXT DEFAULT '',\n93:             created_at TEXT NOT NULL\n94:         );\n95:         CREATE TABLE IF NOT EXISTS aliases (\n96:             entity_id INTEGER NOT NULL,\n97:             alias TEXT NOT NULL,\n98:             UNIQUE(entity_id, alias),\n99:Line truncated
+{"type":"tool_use","timestamp":1788956075568,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"type":"tool","tool":"read","callID":"call_f0ae7d6cb40a45d2a089b630","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/research/issue-163/synthesis.json"},"output":"<path>/mnt/workdrive/issue161-harness/research/issue-163/synthesis.json</path>\n<type>file</type>\n<content>\n1: {\n2:   \"stage\": \"SYNTHESIS\",\n3:   \"issue\": 163,\n4:   \"round\": 1,\n5:   \"process_id\": \"research-163-r1\",\n6:   \"question\": \"Given the candidates that survived, WHAT SHOULD MIMO CODE BUILD?\",\n7:   \"selected_design\": \"Corrected, re-sequenced temporal+lexical query layer over graph.sqlite (survivors C5+C6; C4 as characterization-only; C9 as a constrained track). Concretely: (1) WRITE-SIDE FIRST — M1a, the one-line fix in add_edge (graph_memory.py:206-208) that sets valid_until=now on supersede, making the documented bitemporal as-of filter correct for all future data with free backfill (the DB is empty); (2) C5 — an --as-of <iso8601> point-in-time query parameter whose input is strictly normalized to the now_iso() format before any comparison (M2), replacing the status='active' filter with valid_from <= t AND (valid_until IS NULL OR t < valid_until) AND learned_at <= t in both the outgoing and incoming edge queries, default path unchanged; (3) C6 — an FTS5 lexical entry-resolution tier framed explicitly as a rebuildable projection of entities/aliases inside graph.sqlite (M3) with deterministic alias ordering, lookup order exact -> alias -> FTS5 BM25 -> substring; (4) all lexical benefit measured END-TO-END at ContextBroker.memory_selector output, not graph_memory.query output (M4); (5) read-layer work sequenced behind write-side population (M5) with the T5 population gate. C4 ships as a documentation characterization correction only (M6); C9 ships as nothing — it is carried solely as the M7 constraint on any future analytics sidecar.\",\n8:   \"why_this_design_won\": \"C5 and C6 are the only surviving candidates that add capabilities the status quo genuinely lacks — reading the superseded history Rune already persists, and lifting entry-point recall past exact/alias/substring — and both stay inside Rune's embedded, no-new-dependency posture (in-process SQLite, FTS5 verified available at sqlite 3.53.4). But INN-1's original synthesis was falsified twice over: its as-of filter returns BOTH sides of a contradiction as current knowledge against the current writer (A2, critical — supersede never writes valid_until, graph_memory.py:207-208), and its benefit chain is broken at the empty graph (A5) and again at the memory_selector floor (A6). The adversarial stage's simpler-alternative analysis (A3, A13) dictated the winning shape: fix the writer first (one line, free backfill on an empty DB), then read-layer work, measured end-to-end. Within M1, option (a) wins over option (b): the valid_until-on-supersede fix makes the documented bitemporal filter correct with a single WHERE clause and avoids inventing a superseded_by chain-walk helper with terminal/cycle semantics (CA6); option (b) is retained as a documented fallback should T2 falsify M1a. C4 and C9 survive as constraints, not work: C4's 'bi-temporal E14 1:1' claim is contradicted by the code (A1, A11) and survives only as a corrected characterization (M6); C9 is track-only (A9/A10) and contributes only the M7 boundary on future analytics. Nothing here resurrects INN-1-as-specified or any applicability-stage rejection.\",\n9:   \"rejected_alternatives\": [\n10:     {\n11:       \"design\": \"INN-1#temporal-filter-as-specified — ship the as-of filter (valid_from <= t AND (valid_until IS NULL OR t < valid_until) AND learned_at <= t) against the current writer\",\n12:       \"reason\": \"REJECTED at ADVERSARIAL (A2, critical): supersede (graph_memory.py:207-208) sets status/superseded_by but never valid_until, so superseded edges remain NULL-open on the valid axis and pass all three predicates for every t after creation — the feature returns the superseded AND superseding edges of a contradiction simultaneously, the exact failure it exists to prevent. Do NOT resurrect in this form.\"\n13:     },\n14:     {\n15:       \"design\": \"M1b — transaction-time-only as-of (learned_at <= t AND (status='active' OR the superseding edge's learned_at > t), walking superseded_by to a terminal)\",\n16:       \"reason\": \"Viable fallback, not selected: it requires a new chain-walk helper with terminal and cycle semantics (nothing asserts acyclicity, CA6) and leaves the bitemporal filter permanently unimplementable. M1a is one write-side line with free backfill on an empty DB. Escalate to M1b only if T2 falsifies M1a.\"\n17:     },\n18:     {\n19:       \"design\": \"Read-layer-first sequencing (INN-1's original order: build as-of + FTS5 now, populate the graph later)\",\n20:       \"reason\": \"REJECTED per M5/A13: the live production grLine truncated
+{"type":"tool_use","timestamp":1788956075570,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"type":"tool","tool":"read","callID":"call_c1e8b5c73a1244c0a6b05e8c","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/src/rune/memory_selector.py","limit":50,"offset":350},"output":"<path>/mnt/workdrive/issue161-harness/src/rune/memory_selector.py</path>\n<type>file</type>\n<content>\n350:                 \"text\": f\"[{neuron.get('slug', 'warm')}] {text}\",\n351:                 \"score\": score,\n352:                 \"kind\": \"neuron\",\n353:                 \"source\": \"warm_neuron_store.list_neurons\",\n354:             }\n355:         )\n356:         if len(out) >= budget:\n357:             break\n358:     return out\n359: \n360: \n361: def _graphs_recall(query: str, types: list[str] | None, budget: int, min_score: float) -> list[dict]:\n362:     \"\"\"Graph source: entity BFS from the task words via graph_memory.query,\n363:     floored. The pre-P1-03 contributor called resolve_entity(), which MUTATES\n364:     the graph (creates missing entities); read-only query() keeps the store\n365:     side-effect-free. A term with no entity yields no candidates.\"\"\"\n366:     try:\n367:         import graph_memory\n368:     except ImportError:  # TUI top-level deploy\n369:         import rune.graph_memory as graph_memory  # type: ignore[no-redef]\n370: \n371:     db = graph_memory.connect()\n372:     out: list[dict] = []\n373:     try:\n374:         task_words = list(dict.fromkeys(w.lower().strip(\".,;:!?()[]{}\\\"'\") for w in query.split()))[:5]\n375:         for word in task_words:\n376:             result = graph_memory.query(db, word, hops=1)\n377:             if not result:\n378:                 continue\n379:             entity = result.get(\"entity\", word) if isinstance(result, dict) else str(result)\n380:             facts = result.get(\"facts\", []) if isinstance(result, dict) else []\n381:             lines = [f\"{f.get('subject')} {f.get('predicate', '-')} {f.get('object')}\" for f in facts]\n382:             text = \"; \".join(lines) if lines else str(entity)\n383:             score = _lex_overlap_score(text, query) or (1.0 / max(len(task_words), 1))\n384:             if score < min_score:\n385:                 continue\n386:             out.append({\"text\": text, \"score\": score, \"kind\": \"graph\", \"source\": \"graph_memory.query\"})\n387:             if len(out) >= budget:\n388:                 break\n389:     finally:\n390:         db.close()\n391:     return out\n392: \n393: \n394: def _abstraction_recall(query: str, types: list[str] | None, budget: int, min_score: float) -> list[dict]:\n395:     \"\"\"Abstraction-facts source: LIKE scan over active facts, floored.\n396: \n397:     The pre-P1-03 contributor injected the top-3 LIKE matches unconditionally;\n398:     here a LIKE match is only a candidate — it must clear the floor.\n399:     \"\"\"\n\n(Showing lines 350-399 of 511. Use offset=400 to continue.)\n</content>","metadata":{"preview":"                \"text\": f\"[{neuron.get('slug', 'warm')}] {text}\",\n                \"score\": score,\n                \"kind\": \"neuron\",\n                \"source\": \"warm_neuron_store.list_neurons\",\n            }\n        )\n        if len(out) >= budget:\n            break\n    return out\n\n\ndef _graphs_recall(query: str, types: list[str] | None, budget: int, min_score: float) -> list[dict]:\n    \"\"\"Graph source: entity BFS from the task words via graph_memory.query,\n    floored. The pre-P1-03 contributor called resolve_entity(), which MUTATES\n    the graph (creates missing entities); read-only query() keeps the store\n    side-effect-free. A term with no entity yields no candidates.\"\"\"\n    try:\n        import graph_memory\n    except ImportError:  # TUI top-level deploy\n        import rune.graph_memory as graph_memory  # type: ignore[no-redef]","truncated":true,"loaded":[]},"title":"src/rune/memory_selector.py","time":{"start":1788956075555,"end":1788956075569}},"id":"prt_g001a0861765e5001jJx3gSHq7","sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","messageID":"msg_g001a086171278001uhT25drcg"}}
+{"type":"tool_use","timestamp":1788956075571,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"type":"tool","tool":"read","callID":"call_95f5bdc8c0154f1598040619","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/src/rune/contracts.py","limit":30,"offset":225},"output":"<path>/mnt/workdrive/issue161-harness/src/rune/contracts.py</path>\n<type>file</type>\n<content>\n225:     Contract(\n226:         name=\"abstraction.pipeline_stats returns dict or None\",\n227:         module=\"abstraction\", function=\"pipeline_stats\",\n228:         args=(), kwargs={},\n229:     ),\n230: \n231:     # Graph memory\n232:     Contract(\n233:         name=\"graph_memory.connect returns connection\",\n234:         module=\"graph_memory\", function=\"connect\",\n235:         args=(), kwargs={},\n236:         expect_not_none=True,\n237:     ),\n238:     Contract(\n239:         name=\"graph_memory.stats callable\",\n240:         module=\"graph_memory\", function=\"stats\",\n241:         args=(), kwargs={},\n242:         expect_callable=True,\n243:     ),\n244: \n245:     # Persona gate\n246:     Contract(\n247:         name=\"persona_gate.PERMISSIVE_MODE is True\",\n248:         module=\"persona_gate\", function=\"PERMISSIVE_MODE\",\n249:         args=(), kwargs={},\n250:     ),\n251: \n252:     # Voice hybrid\n253:     Contract(\n254:         name=\"voice_hybrid.blend returns dict or None\",\n\n(Showing lines 225-254 of 570. Use offset=255 to continue.)\n</content>","metadata":{"preview":"    Contract(\n        name=\"abstraction.pipeline_stats returns dict or None\",\n        module=\"abstraction\", function=\"pipeline_stats\",\n        args=(), kwargs={},\n    ),\n\n    # Graph memory\n    Contract(\n        name=\"graph_memory.connect returns connection\",\n        module=\"graph_memory\", function=\"connect\",\n        args=(), kwargs={},\n        expect_not_none=True,\n    ),\n    Contract(\n        name=\"graph_memory.stats callable\",\n        module=\"graph_memory\", function=\"stats\",\n        args=(), kwargs={},\n        expect_callable=True,\n    ),\n","truncated":true,"loaded":[]},"title":"src/rune/contracts.py","time":{"start":1788956075556,"end":1788956075570}},"id":"prt_g001a0861765e6001q1mMp60Y8","sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","messageID":"msg_g001a086171278001uhT25drcg"}}
+{"type":"tool_use","timestamp":1788956075573,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"type":"tool","tool":"read","callID":"call_b43455a2c93442ba94e6398c","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/issue161-harness/src/rune/canary_p0_04.py","limit":25,"offset":90},"output":"<path>/mnt/workdrive/issue161-harness/src/rune/canary_p0_04.py</path>\n<type>file</type>\n<content>\n90:         \"warm_router.route\",\n91:         \"capability_broker.match\",\n92:         \"memory_store.connect\",\n93:         \"witness.detect_signals\",\n94:         \"drift_ledger.check\",\n95:         \"sleep_time.consolidate\",\n96:         \"run_parallel\",\n97:         \"prompt_sync\",\n98:         \"abstraction.connect\",\n99:         \"graph_memory.resolve\",\n100:         \"time_awareness.get_time_context\",\n101:         \"event_bus.emit\",\n102:     )\n103:     for banned in banned_ids:\n104:         if banned in body:\n105:             return _fail(f\"pipeline step {banned} re-added inside _run_warm_router\")\n106:     return 0\n107: \n108: \n109: def check_subsystems_import() -> int:\n110:     modules = (\n111:         \"warm_router\",\n112:         \"capability_broker\",\n113:         \"memory_store\",\n114:         \"witness\",\n\n(Showing lines 90-114 of 207. Use offset=115 to continue.)\n</content>","metadata":{"preview":"        \"warm_router.route\",\n        \"capability_broker.match\",\n        \"memory_store.connect\",\n        \"witness.detect_signals\",\n        \"drift_ledger.check\",\n        \"sleep_time.consolidate\",\n        \"run_parallel\",\n        \"prompt_sync\",\n        \"abstraction.connect\",\n        \"graph_memory.resolve\",\n        \"time_awareness.get_time_context\",\n        \"event_bus.emit\",\n    )\n    for banned in banned_ids:\n        if banned in body:\n            return _fail(f\"pipeline step {banned} re-added inside _run_warm_router\")\n    return 0\n\n\ndef check_subsystems_import() -> int:","truncated":true,"loaded":[]},"title":"src/rune/canary_p0_04.py","time":{"start":1788956075557,"end":1788956075572}},"id":"prt_g001a0861765e7002tRPrEhUZ0","sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","messageID":"msg_g001a086171278001uhT25drcg"}}
+{"type":"step_finish","timestamp":1788956075600,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"id":"prt_g001a086176635001Gqhv5GRxh","reason":"tool-calls","snapshot":"254fde45476e324f01a4dd008a50f0a49b3b1217","messageID":"msg_g001a086171278001uhT25drcg","sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","type":"step-finish","tokens":{"total":45162,"input":44379,"output":253,"reasoning":466,"cache":{"write":0,"read":64}},"cost":0}}
+{"type":"step_start","timestamp":1788956082938,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"id":"prt_g001a0861782f70013LA2A2eEt","messageID":"msg_g001a08617668a001bG8rGE3EC","sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","snapshot":"9ec82ac175109c6a645338efedc4aaf0f98a6177","type":"step-start"}}
+{"type":"text","timestamp":1788956331748,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"id":"prt_g001a08619b3240010JyEz6AAr","messageID":"msg_g001a08617668a001bG8rGE3EC","sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","type":"text","text":"I have everything I need. The situation is now fully clear: a round-1 synthesis.json exists, the QUALIFY stage audited it and issued three findings (an unimplementable contentless FTS5 DDL, a symbolic N, an unnamed sort key), and this is the round-2 SYNTHESIS pass. My plan: rewrite `synthesis.json` keeping the round-1 design (it matches all settled constraints) while committing concrete resolutions for all three findings, grounded in the code I just verified (`add_edge` supersede at `graph_memory.py:206-208`, alias `LIMIT 1` at `:228-231` and the same nondeterminism in `resolve_entity` at `:147-151`, `_graphs_recall` floor at `memory_selector.py:383-384`, contracts at `contracts.py:233-240`, canary bans at `canary_p0_04.py:99-105`).","time":{"start":1788956226340,"end":1788956331744}}}
+{"type":"tool_use","timestamp":1788956331783,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"type":"tool","tool":"write","callID":"call_b4ad9265408e45ea9b8cd199","state":{"status":"completed","input":{"content":"{\n  \"stage\": \"SYNTHESIS\",\n  \"issue\": 163,\n  \"round\": 2,\n  \"process_id\": \"research-163-r1\",\n  \"question\": \"Given the candidates that survived, WHAT SHOULD MIMO CODE BUILD?\",\n  \"selected_design\": \"Corrected, re-sequenced temporal+lexical query layer over graph.sqlite (survivors C5+C6; C4 as characterization-only; C9 as a constrained track). Concretely: (1) WRITE-SIDE FIRST — M1a, the one-line fix in add_edge (graph_memory.py:206-208) that sets valid_until=now on supersede, making the documented bitemporal as-of filter correct for all future data with free backfill (the DB is empty); (2) C5 — an --as-of <iso8601> point-in-time query parameter whose input is strictly normalized to the now_iso() format before any comparison (M2), replacing the status='active' filter with valid_from <= t AND (valid_until IS NULL OR t < valid_until) AND learned_at <= t in both the outgoing and incoming edge queries, default path unchanged; (3) C6 — an FTS5 lexical entry-resolution tier built as a NON-CONTENTLESS FTS5 projection table graph_lex(name, alias, entity_id UNINDEXED) with one row per (entity_id, text) over entities.name ∪ aliases.alias, INSERT-only maintenance on the existing write path, a documented rebuild-lex command, and a recorded tokenizer decision (M3, layout committed in this round); (4) all lexical benefit measured END-TO-END at ContextBroker.memory_selector output, not graph_memory.query output (M4); (5) read-layer work sequenced behind write-side population (M5) with the T5 population gate at a pre-committed N=4 weeks and <50-edges threshold. C4 ships as a documentation characterization correction only (M6); C9 ships as nothing — it is carried solely as the M7 constraint on any future analytics sidecar.\",\n  \"why_this_design_won\": \"C5 and C6 are the only surviving candidates that add capabilities the status quo genuinely lacks — reading the superseded history Rune already persists but cannot query temporally, and lifting entry-point recall past exact/alias/substring — and both stay inside Rune's embedded, no-new-dependency posture (in-process SQLite; FTS5 verified available at sqlite 3.53.4). INN-1's original formulation was falsified twice over: its as-of filter returns BOTH sides of a contradiction as current knowledge against the current writer (A2, critical — supersede never writes valid_until, graph_memory.py:207-208), and its benefit chain is broken at the empty graph (A5) and again at the memory_selector floor (A6). The adversarial stage's simpler-alternative analysis (A3, A13) dictated the winning shape: fix the writer first (one line, free backfill on an empty DB), then read-layer work, measured end-to-end. Within M1, option (a) wins over option (b): the valid_until-on-supersede fix makes the documented bitemporal filter correct with a single WHERE clause and avoids inventing a superseded_by chain-walk helper with terminal/cycle semantics (CA6); option (b) is retained as a documented fallback should T2 falsify M1a. C4 and C9 survive as constraints, not work: C4's 'bi-temporal E14 1:1' claim is contradicted by the code (A1, A11) and survives only as a corrected characterization (M6); C9 is track-only (A9/A10) and contributes only the M7 boundary on future analytics. Round 2 commits the three QUALIFY findings into this design — the graph_lex row layout and id mapping, a concrete N=4 weeks for the population gate, and the named alias sort key — so the handoff to the coding worker is verbatim-executable with no invented design. Nothing here resurrects INN-1-as-specified or any applicability-stage rejection.\",\n  \"rejected_alternatives\": [\n    {\n      \"design\": \"INN-1#temporal-filter-as-specified — ship the as-of filter (valid_from <= t AND (valid_until IS NULL OR t < valid_until) AND learned_at <= t) against the current writer\",\n      \"reason\": \"REJECTED at ADVERSARIAL (A2, critical): supersede (graph_memory.py:207-208) sets status/superseded_by but never valid_until, so superseded edges remain NULL-open on the valid axis and pass all three predicates for every t after creation — the feature returns the superseded AND superseding edges of a contradiction simultaneously, the exact failure it exists to prevent. Do NOT resurrect in this form.\"\n    },\n    {\n      \"design\": \"M1b — transaction-time-only as-of (learned_at <= t AND (status='active' OR the superseding edge's learned_at > t), walking superseded_by to a terminal)\",\n      \"reason\": \"Viable fallback, not selected: it requires a new chain-walk helper with terminal and cycle semantics (nothing asserts acyclicity, CA6) and leaves the bitemporal filter permanently unimplementable. M1a is one write-side line with free backfill on an empty DB. Escalate to M1b onlyLine truncated
+{"type":"step_finish","timestamp":1788956331812,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"id":"prt_g001a0861b4f06001Q4Jf5rOhQ","reason":"tool-calls","snapshot":"0ad22f7f663eab5e9c4704470816d0bd47d13f7c","messageID":"msg_g001a08617668a001bG8rGE3EC","sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","type":"step-finish","tokens":{"total":80833,"input":46485,"output":7663,"reasoning":5565,"cache":{"write":0,"read":21120}},"cost":0}}
+{"type":"step_start","timestamp":1788956338753,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"id":"prt_g001a0861b6a3f001EhWY25no4","messageID":"msg_g001a0861b4f49001gfQPaoofT","sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","snapshot":"946787f3126e04fcbf707734c63d0f768b728db1","type":"step-start"}}
+{"type":"text","timestamp":1788956343431,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"id":"prt_g001a0861b6b2b002JkMDY37N4","messageID":"msg_g001a0861b4f49001gfQPaoofT","sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","type":"text","text":"Now validating the written JSON parses cleanly:","time":{"start":1788956338987,"end":1788956343428}}}
+{"type":"tool_use","timestamp":1788956343516,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"type":"tool","tool":"bash","callID":"call_10663a4a66974e9497d52ef4","state":{"status":"completed","input":{"command":"python3 -c \"\nimport json\nwith open('research/issue-163/synthesis.json') as f:\n    d = json.load(f)\nrequired = ['selected_design','why_this_design_won','rejected_alternatives','components_affected','authority_boundaries','interfaces','data_flow','implementation_sequence','invariants','tests_required','acceptance_criteria','failure_modes','rollback','deliberately_excluded']\nmissing = [k for k in required if k not in d]\nprint('missing keys:', missing or 'NONE')\nprint('rejected_alternatives:', len(d['rejected_alternatives']))\nprint('interfaces:', len(d['interfaces']))\nprint('invariants:', len(d['invariants']), '| tests:', len(d['tests_required']), '| ACs:', len(d['acceptance_criteria']))\nprint('sequence steps:', len(d['implementation_sequence']))\nprint('round:', d['round'], '| N committed:', 'N=4 weeks' in d['invariants'][4])\nprint('sort key named:', 'ORDER BY a.entity_id ASC' in d['interfaces'][8])\nprint('non-contentless DDL committed:', 'entity_id UNINDEXED' in d['interfaces'][4])\n\"","description":"Validate synthesis.json structure and committed resolutions","workdir":"/mnt/workdrive/issue161-harness"},"output":"missing keys: NONE\nrejected_alternatives: 10\ninterfaces: 10\ninvariants: 11 | tests: 12 | ACs: 10\nsequence steps: 10\nround: 2 | N committed: True\nsort key named: True\nnon-contentless DDL committed: True\n","metadata":{"output":"missing keys: NONE\nrejected_alternatives: 10\ninterfaces: 10\ninvariants: 11 | tests: 12 | ACs: 10\nsequence steps: 10\nround: 2 | N committed: True\nsort key named: True\nnon-contentless DDL committed: True\n","exit":0,"description":"Validate synthesis.json structure and committed resolutions","truncated":false},"title":"Validate synthesis.json structure and committed resolutions","time":{"start":1788956343507,"end":1788956343514}},"id":"prt_g001a0861b7c4a001LqFKDlCwd","sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","messageID":"msg_g001a0861b4f49001gfQPaoofT"}}
+{"type":"step_finish","timestamp":1788956343543,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"id":"prt_g001a0861b7cdb001ClhYKg63g","reason":"tool-calls","snapshot":"f1512fec5b5caa9350eba44da9e9350419e54d05","messageID":"msg_g001a0861b4f49001gfQPaoofT","sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","type":"step-finish","tokens":{"total":65351,"input":65055,"output":287,"reasoning":9,"cache":{"write":0,"read":0}},"cost":0}}
+{"type":"step_start","timestamp":1788956349984,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"id":"prt_g001a0861b961e001tQ6AgaCqM","messageID":"msg_g001a0861b7d1c001vgfk97qKo","sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","snapshot":"694d3e60ee43c33ac525c6f432d27780c6133c50","type":"step-start"}}
+{"type":"text","timestamp":1788956365290,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"id":"prt_g001a0861b975a001jVy6HyAoa","messageID":"msg_g001a0861b7d1c001vgfk97qKo","sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","type":"text","text":"**STATUS: COMPLETE.** The synthesis dossier is written to `research/issue-163/synthesis.json` (round 2, JSON validated — all 14 required keys present).\n\n## What Mimo Code should build\n\n**Selected design:** the corrected, re-sequenced temporal+lexical query layer over `graph.sqlite` — C5+C6 with every mitigation applied, sequenced write-side-first:\n\n1. **M1a first** — one-line fix in `add_edge` (`graph_memory.py:206-208`): set `valid_until=now` on supersede. Nothing read-layer ships before this; it's what makes the as-of filter correct (the INN-1 filter as originally specified returns both sides of a contradiction — falsified at ADVERSARIAL, A2).\n2. **C5** — `--as-of` parameter with strict input normalization (`normalize_as_of`, M2), bitemporal filter on both edge queries, default path byte-identical.\n3. **C6** — FTS5 lexical entry tier as a **rebuildable projection** with deterministic alias ordering, measured end-to-end at `memory_selector` output (M4), gated by kill tests T3/T4.\n4. **C4** ships as documentation correction only (M6); **C9** ships as nothing — only the M7 constraint on any future analytics sidecar.\n\n## How the three QUALIFY REFINE findings were addressed\n\nAll three explicitly resolved and documented in a `qualify_refine_findings_resolution` section:\n\n- **INTERFACE GAP** → committed the layout rather than delegating: non-contentless `graph_lex(name, alias, entity_id UNINDEXED, tokenize='unicode61')`, one row per `(entity_id, text)`, UNINDEXED `entity_id` as the sole id mapping, **INSERT-only maintenance** (name-row on entity creation, alias-row on real inserts only) — which moots the contentless-UPDATE impossibility by construction. The contentless DDL and the packed-alias alternative were added as rejected alternatives.\n- **PARAMETER GAP** → **N=4 weeks pre-committed** in INV-5, step 9, AC9, and the harness test, with an explicit no-rechoice-after-observation clause.\n- **MINOR GAP** → sort key named: `ORDER BY a.entity_id ASC`, applied at **both** alias-resolution sites (`resolve_entity` :147-151 and `query` :228-231 — I verified both are nondeterministic in the current code, so pinning only one would leave INV-8 unverifiable).\n\nConstraints honored: no new research or fetches, no rejected candidate resurrected (INN-1-as-specified is listed with a do-not-resurrect reason), all seven mitigations and all six falsification tests converted into invariants/tests/ACs verbatim, and no new authority paths created.","time":{"start":1788956350298,"end":1788956365288}}}
+{"type":"step_finish","timestamp":1788956365319,"sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","part":{"id":"prt_g001a0861bd1e9001ekwmppkby","reason":"stop","snapshot":"1d0c07d4fa5b75b905dbf9d1054b1649d202fa52","messageID":"msg_g001a0861b7d1c001vgfk97qKo","sessionID":"ses_-ffe5f79ece03cffeFnTk9VVoS","type":"step-finish","tokens":{"total":66031,"input":387,"output":607,"reasoning":13,"cache":{"write":0,"read":65024}},"cost":0}}
@@ -0,0 +1,178 @@
+{
+  "stage": "SYNTHESIS",
+  "issue": 163,
+  "round": 2,
+  "process_id": "research-163-r1",
+  "question": "Given the candidates that survived, WHAT SHOULD MIMO CODE BUILD?",
+  "selected_design": "Corrected, re-sequenced temporal+lexical query layer over graph.sqlite (survivors C5+C6; C4 as characterization-only; C9 as a constrained track). Concretely: (1) WRITE-SIDE FIRST — M1a, the one-line fix in add_edge (graph_memory.py:206-208) that sets valid_until=now on supersede, making the documented bitemporal as-of filter correct for all future data with free backfill (the DB is empty); (2) C5 — an --as-of <iso8601> point-in-time query parameter whose input is strictly normalized to the now_iso() format before any comparison (M2), replacing the status='active' filter with valid_from <= t AND (valid_until IS NULL OR t < valid_until) AND learned_at <= t in both the outgoing and incoming edge queries, default path unchanged; (3) C6 — an FTS5 lexical entry-resolution tier built as a NON-CONTENTLESS FTS5 projection table graph_lex(name, alias, entity_id UNINDEXED) with one row per (entity_id, text) over entities.name ∪ aliases.alias, INSERT-only maintenance on the existing write path, a documented rebuild-lex command, and a recorded tokenizer decision (M3, layout committed in this round); (4) all lexical benefit measured END-TO-END at ContextBroker.memory_selector output, not graph_memory.query output (M4); (5) read-layer work sequenced behind write-side population (M5) with the T5 population gate at a pre-committed N=4 weeks and <50-edges threshold. C4 ships as a documentation characterization correction only (M6); C9 ships as nothing — it is carried solely as the M7 constraint on any future analytics sidecar.",
+  "why_this_design_won": "C5 and C6 are the only surviving candidates that add capabilities the status quo genuinely lacks — reading the superseded history Rune already persists but cannot query temporally, and lifting entry-point recall past exact/alias/substring — and both stay inside Rune's embedded, no-new-dependency posture (in-process SQLite; FTS5 verified available at sqlite 3.53.4). INN-1's original formulation was falsified twice over: its as-of filter returns BOTH sides of a contradiction as current knowledge against the current writer (A2, critical — supersede never writes valid_until, graph_memory.py:207-208), and its benefit chain is broken at the empty graph (A5) and again at the memory_selector floor (A6). The adversarial stage's simpler-alternative analysis (A3, A13) dictated the winning shape: fix the writer first (one line, free backfill on an empty DB), then read-layer work, measured end-to-end. Within M1, option (a) wins over option (b): the valid_until-on-supersede fix makes the documented bitemporal filter correct with a single WHERE clause and avoids inventing a superseded_by chain-walk helper with terminal/cycle semantics (CA6); option (b) is retained as a documented fallback should T2 falsify M1a. C4 and C9 survive as constraints, not work: C4's 'bi-temporal E14 1:1' claim is contradicted by the code (A1, A11) and survives only as a corrected characterization (M6); C9 is track-only (A9/A10) and contributes only the M7 boundary on future analytics. Round 2 commits the three QUALIFY findings into this design — the graph_lex row layout and id mapping, a concrete N=4 weeks for the population gate, and the named alias sort key — so the handoff to the coding worker is verbatim-executable with no invented design. Nothing here resurrects INN-1-as-specified or any applicability-stage rejection.",
+  "rejected_alternatives": [
+    {
+      "design": "INN-1#temporal-filter-as-specified — ship the as-of filter (valid_from <= t AND (valid_until IS NULL OR t < valid_until) AND learned_at <= t) against the current writer",
+      "reason": "REJECTED at ADVERSARIAL (A2, critical): supersede (graph_memory.py:207-208) sets status/superseded_by but never valid_until, so superseded edges remain NULL-open on the valid axis and pass all three predicates for every t after creation — the feature returns the superseded AND superseding edges of a contradiction simultaneously, the exact failure it exists to prevent. Do NOT resurrect in this form."
+    },
+    {
+      "design": "M1b — transaction-time-only as-of (learned_at <= t AND (status='active' OR the superseding edge's learned_at > t), walking superseded_by to a terminal)",
+      "reason": "Viable fallback, not selected: it requires a new chain-walk helper with terminal and cycle semantics (nothing asserts acyclicity, CA6) and leaves the bitemporal filter permanently unimplementable. M1a is one write-side line with free backfill on an empty DB. Escalate to M1b only if T2 falsifies M1a."
+    },
+    {
+      "design": "Read-layer-first sequencing (INN-1's original order: build as-of + FTS5 now, populate the graph later)",
+      "reason": "REJECTED per M5/A13: the live production graph is completely empty (0 entities, 0 aliases, 0 edges — verified read-only at ADVERSARIAL); kill tests on an empty graph trivially return no-benefit. Write-side population precedes or accompanies read-layer work."
+    },
+    {
+      "design": "graph_lex as a contentless FTS5 table — the round-1 declared DDL 'CREATE VIRTUAL TABLE graph_lex USING fts5(name, alias, content='')'",
+      "reason": "REJECTED at QUALIFY (INTERFACE GAP): a contentless FTS5 table has no unindexed columns, so no FTS-row→entity-id mapping exists; the 1:N entity→aliases relation is unrepresentable without an unspecified packing format; and contentless FTS5 supports no UPDATE, while add_edge inserts new aliases for already-existing entities (graph_memory.py:209-212), which would force the coder to invent a delete+reinsert protocol. Replaced by the committed non-contentless layout in interfaces."
+    },
+    {
+      "design": "graph_lex as rowid=entities.id with one row per entity and packed aliases",
+      "reason": "Viable but rejected: it requires a defined alias-packing format, re-tokenizes the entity's entire packed row on every new alias (add_edge adds aliases continuously), and dilutes per-alias BM25 scoring because individual alias matches cannot be distinguished inside a packed row. The one-row-per-alias layout is INSERT-only and scores each alias independently."
+    },
+    {
+      "design": "Backend migration — C1 Neo4j, C2 FalkorDB, C3 LadybugDB",
+      "reason": "REJECTED or deferred at APPLICABILITY: networked JVM/Redis servers conflict with Rune's embedded local-first posture (C1/C2); LadybugDB is an insufficiently-evidenced revival fork (C3). Not reopened — the load-bearing fact (E17: temporal semantics live at the framework layer) is already Rune's design."
+    },
+    {
+      "design": "C9 Ladybug Memory lakehouse stack (Pgembed + DuckDB aging + Icebug analytics) built now",
+      "reason": "SURVIVES_TRACK_ONLY (A9/A10): roadmap-stage components, affiliated-only benchmarks, and an empty graph make any analytics benefit unmeasurable at Rune's regime. Carried solely as the M7 constraint: any future sidecar is a rebuildable read-only projection of graph.sqlite with zero independent writes; Pgembed-style multi-writer elements stay incompatible with single-curator write authority."
+    },
+    {
+      "design": "Full Graphiti hybrid retrieval including the embedding tier (C6 as originally scoped)",
+      "reason": "Model dependencies are disproportionate to Rune's sub-1M regime (per INNOVATION and APPLICABILITY). Only the lexical FTS5 tier survives, and only as a rebuildable projection gated by the M4 selector-floor test."
+    },
+    {
+      "design": "C7 pluggable driver abstraction, C8 Cypher temporal VALUE types, C10 Graphiti LLM ingestion pipeline",
+      "reason": "REJECTED at APPLICABILITY (TOO_COMPLEX_FOR_VALUE / redundant with Rune's existing write-side discipline). Not resurrected."
+    },
+    {
+      "design": "Global alias uniqueness schema change as the primary M3 fix",
+      "reason": "M3 allows deterministic ordering OR a uniqueness fix; deterministic ordering (ORDER BY a.entity_id ASC at both alias-resolution sites, replacing the nondeterministic bare LIMIT 1 at graph_memory.py:228-231 and the unordered fetchone at :147-151) is selected as the smaller change with no schema migration. A global uniqueness fix is revisited only if research gap G3 shows alias ambiguity is common at realistic scale."
+    }
+  ],
+  "components_affected": [
+    "src/rune/graph_memory.py — the sole build surface: add_edge supersede fix (:206-208), query() as-of filter (:254 outgoing, :275 incoming), entity resolution ordering (:147-151 in resolve_entity and :224-237 in query()), new graph_lex FTS5 projection + rebuild-lex command, --as-of CLI flag, normalize_as_of(), docstring correction (:37)",
+    "src/rune/curator.py — unchanged, but it is the M5 population source: graph_write gating (strength<3) and verb map (:1355-1388) determine when the graph becomes non-empty",
+    "src/rune/memory_selector.py — unchanged; _graphs_recall floor (:361-391, floor at :383-384) is the end-to-end measurement boundary for M4/T3, not a modification target",
+    "src/rune/contracts.py — no edits; contracts at :233-240 (graph_memory.connect/stats) must keep passing",
+    "src/rune/canary_p0_04.py — no edits; banned-step list at :99-105 must keep passing",
+    "tests/ — new temporal and lexical test files (see tests_required)",
+    "research/issue-163/synthesis.json — this dossier; downstream dossiers must carry the M6 characterization",
+    "memory/graph/graph.sqlite — core schema unchanged; gains the graph_lex FTS5 virtual table (a projection) and, from M1a onward, non-NULL valid_until on superseded edges"
+  ],
+  "authority_boundaries": [
+    "graph_memory.py remains the sole owner of graph.sqlite and of every write to it (single-curator write authority). The graph_lex FTS5 index lives INSIDE graph.sqlite as graph_memory's own rebuildable projection — no second store, no second writer.",
+    "ContextBroker.memory_selector retains sole authority over memory selection and re-flooring of graph candidates (v1_authority_map.json memory_selection block). This design does not touch it; it is only the measurement boundary.",
+    "memory_store.py retains authority over its own FTS5+sqlite-vec hybrid. The graph FTS5 tier is entry resolution inside graph_memory, not a competing lexical-retrieval or selection authority.",
+    "curator.py / sleep_time.py retain the only production write path into the graph (gated add). No new write path is introduced by this design.",
+    "Future C9 sidecar (track only, M7): constrained to a rebuildable read-only projection of graph.sqlite with a documented rebuild command; zero independent writes; Pgembed-style multi-writer elements remain incompatible with single-curator write authority.",
+    "No new authority paths are created by this design."
+  ],
+  "interfaces": [
+    "M1a supersede write (add_edge, graph_memory.py:206-208): UPDATE edges SET status='superseded', superseded_by=?, valid_until=? WHERE id=? — valid_until set to the same now_iso() timestamp (ts, :187) already used for the superseding edge's valid_from/learned_at (one ts per add_edge call).",
+    "query signature: query(db, term, hops=1, latest_only=True, as_of=None). as_of=None preserves the exact current active-only fast path. as_of=<normalized ISO string> replaces status='active' with 'valid_from <= t AND (valid_until IS NULL OR t < valid_until) AND learned_at <= t' in BOTH the outgoing (:254) and incoming (:275) edge queries; BFS structure and result shape unchanged.",
+    "CLI: graph_memory.py query <term> [--hops N] [--as-of <iso8601>].",
+    "normalize_as_of(raw: str) -> str: parses 'Z'-suffixed, offset ('-05:00'), and fractional-second ISO forms; converts to the now_iso() format (UTC, '+00:00' offset, timespec='seconds') or raises ValueError for unparseable input. Raw strings are NEVER compared lexicographically against stored timestamps (A4).",
+    "graph_lex DDL (M3, layout COMMITTED this round — resolves the QUALIFY INTERFACE GAP): CREATE VIRTUAL TABLE graph_lex USING fts5(name, alias, entity_id UNINDEXED, tokenize='unicode61') — a NON-contentless FTS5 table inside graph.sqlite. Row layout: ONE ROW PER (entity_id, text) pair, where text ranges over the entity's canonical name (entities.name) and each of its aliases (aliases.alias); the name column carries the canonical name and the alias column carries the alias text (for a name-row, alias repeats the canonical name). Id mapping: the UNINDEXED entity_id column is the SOLE FTS-row→entity mapping (no rowid convention, no join-on-name). Tokenizer decision, recorded: 'unicode61' — deterministic, case-folds consistently with the lower() semantics of the existing exact/alias tiers, no stemming surprises on proper names; revisable only via rebuild-lex (projection, no data loss).",
+    "graph_lex maintenance protocol (INSERT-only; resolves QUALIFY gap (c)): on entity creation in resolve_entity (:152-155) INSERT one name-row; on alias insertion in add_edge (:209-212) INSERT one alias-row ONLY when the INSERT OR IGNORE into aliases actually inserted (rowcount == 1), so graph_lex row count tracks aliases exactly. NO UPDATE and NO DELETE exist anywhere in the protocol — verified: current graph_memory.py contains no DELETE and aliases/entities are append-only; any future deletion path MUST route through rebuild-lex rather than incremental FTS edits.",
+    "graph_lex query semantics (the BM25 tier between alias and substring): on exact/alias miss, tokenize the term, MATCH as an OR of its tokens against graph_lex, rank by bm25(graph_lex), de-duplicate to ONE candidate per entity_id with deterministic ordering ORDER BY entity_id ASC (M3 dedup requirement), and take the top candidate. A prefix-MATCH variant is a measured change, adopted only if T3 shows the OR-of-tokens form below the 30% bar — never swapped silently.",
+    "rebuild-lex CLI: graph_memory.py rebuild-lex — DROP and repopulate graph_lex from entities/aliases (names ∪ aliases, one row per (entity_id, text)) in a single transaction; the only bulk-maintenance path; documented as the projection's rebuild command (M3).",
+    "Deterministic alias ordering (M3, sort key NAMED this round — resolves the QUALIFY MINOR GAP): ORDER BY a.entity_id ASC LIMIT 1 replaces the bare LIMIT 1 at graph_memory.py:228-231, and the equivalent ORDER BY a.entity_id ASC is added to resolve_entity's alias lookup at :147-151 — both sites resolve the same alias-ambiguity nondeterminism, and INV-8's observable property holds only if both are pinned.",
+    "Unchanged contracts: graph_memory.connect() and graph_memory.stats() signatures per contracts.py:233-240; canary_p0_04.py:99-105 banned-step list untouched; memory_selector._graphs_recall untouched."
+  ],
+  "data_flow": [
+    "1. Curator/sleep-time extraction -> curator.graph_write (strength>=3 gate, fixed verb map) -> add_edge: insert new edge (valid_from=learned_at=ts), supersede any prior active same-triple edge with valid_until=ts (M1a), maintain aliases and graph_lex rows (name-rows at entity creation, alias-rows on actual new alias inserts), commit.",
+    "2. Query path, no flag: resolve term (exact -> deterministic alias -> FTS5 BM25 -> substring LIKE) -> BFS over status='active' edges — byte-identical to current behavior.",
+    "3. Query path with --as-of t: normalize t via normalize_as_of -> resolve term identically -> BFS with the bitemporal filter over both outgoing and incoming edges — returns exactly the fact set believed at time t.",
+    "4. Graph recall reaches the model only through ContextBroker.memory_selector._graphs_recall, which re-floors every graph candidate via _lex_overlap_score against min_score (1/n_words fallback only when the overlap score is falsy) — this is the end-to-end measurement boundary for all lexical benefit claims (M4); a benefit visible only at graph_memory.query output does not count.",
+    "5. graph_lex is derivable at any time from entities+aliases via rebuild-lex and holds no data the base tables do not.",
+    "6. T5 population gate: after N=4 weeks of real write-side use, edge count is sampled against the <50 threshold to issue the continue / NO_INNOVATION_WARRANTED verdict."
+  ],
+  "implementation_sequence": [
+    "0. Pre-flight verification (no build): confirm the graph source is registered and reachable in memory_selector.DEFAULT_SOURCES in the live path (research gap G4) — if the source is dormant, both read-layer halves are moot regardless of graph population.",
+    "1. M1a: the one-line write-side fix in add_edge (graph_memory.py:206-208) — set valid_until=now on supersede. Backfill is free (DB empty). Ship with the T1/T2 tests. This unblocks everything else; nothing read-layer ships before it.",
+    "2. M2: implement normalize_as_of() with the T6 robustness tests ('Z', '-05:00', fractional-second forms).",
+    "3. M5 gate check: confirm write-side population is underway through curator.graph_write before any read-layer change reaches production; kill tests must never execute on an empty graph.",
+    "4. C5: add the --as-of parameter and bitemporal filter to query() (both edge queries); verify the default no-flag path is behaviorally identical (INV-10).",
+    "5. M3: build the graph_lex FTS5 projection exactly per the committed layout (non-contentless, one row per (entity_id, text), entity_id UNINDEXED, tokenize='unicode61'), the INSERT-only maintenance protocol, the rebuild-lex command, and deterministic alias ordering (ORDER BY a.entity_id ASC at BOTH :147-151 and :228-231).",
+    "6. Kill tests T3/T4: lexical benefit measured at memory_selector output (>=30% held-out resolution AND floor survival); add-bulk write-amplification with commits held constant (batch both arms per A12).",
+    "7. M4: codify the selector-floor interaction test as a permanent test (typo terms resolved by FTS5 must clear min_score or hit the documented 1/n fallback).",
+    "8. M6 documentation pass: module docstring and downstream dossiers describe the tier as 'transaction-time append log with same-triple supersession', never 'bi-temporal E14 1:1'; note the A11 same-triple-only supersession limit and correct the dead 'superseded-by' docstring at :37.",
+    "9. T5 evaluation with the PRE-COMMITTED N=4 weeks (resolves the QUALIFY PARAMETER GAP): after 4 weeks of real use, if the graph remains below the minimal activity threshold (<50 edges), both read-layer halves are moot and the issue conclusion reduces to NO_INNOVATION_WARRANTED."
+  ],
+  "invariants": [
+    "INV-1 (converts T1, kills INN-1-as-specified): for any contradiction pair on the same triple (t1 < t2), an as-of query at any t > t2 returns exactly the superseding edge and never the superseded one; a filter that returns both at any t is invalid. Holds only after M1a — retained as a permanent regression guard.",
+    "INV-2 (converts T2, validates M1a): after the valid_until-on-supersede fix, as-of t_mid (t1 < t_mid < t2) returns exactly edge-1; as-of t_end (> t2) returns exactly edge-2; as-of t0 < t1 returns empty facts for that triple.",
+    "INV-3 (converts T3): the lexical tier is valid only if the FTS5 tier resolves >=30% of held-out paraphrase/typo queries that exact/alias/substring miss AND the resolved candidates survive _graphs_recall's min_score floor end-to-end, measured at memory_selector output. Either sub-condition failing kills the lexical half.",
+    "INV-4 (converts T4): add-bulk of 1,000 edges with FTS5 enabled vs disabled, commits held constant (both arms batched per A12); latency regression >10% with no compensating INV-3 gain kills the tier.",
+    "INV-5 (converts T5, N COMMITTED this round): population gate — if after M5 sequencing the graph remains below 50 edges over N=4 weeks of real use, both read-layer halves are moot and the conclusion reduces to NO_INNOVATION_WARRANTED for this issue. N=4 weeks and the <50-edges threshold are pre-committed here and may not be re-chosen after observing the data.",
+    "INV-6 (converts T6): --as-of input in 'Z'-suffixed, '-05:00'-offset, or fractional-second form is normalized to the now_iso() format or explicitly rejected — never silently mis-ordered in a lexicographic comparison (A4).",
+    "INV-7: graph_memory.connect() and stats() contract signatures (contracts.py:233-240) and the canary banned-step list (canary_p0_04.py:99-105) remain intact; no banned step re-enters any pipeline body.",
+    "INV-8: alias resolution is deterministic — identical inputs resolve to the identical entity across runs, enforced by ORDER BY a.entity_id ASC at BOTH alias-resolution sites (:147-151 and :228-231); the sort key is entity_id ascending, named here as the verbatim instruction.",
+    "INV-9: graph_lex is a pure projection — its row set is exactly {(entity_id, text) : text in entities.name ∪ aliases.alias of that entity}; the INSERT-only maintenance protocol preserves this parity incrementally, dropping and rebuilding it from entities+aliases via rebuild-lex yields identical content, and it never holds authoritative data.",
+    "INV-10: default query behavior (no --as-of) is unchanged: status='active' fast path, identical result shape.",
+    "INV-11: no component of this design writes to graph.sqlite except graph_memory's existing gated write path; the M7 constraint (read-only rebuildable projections only, no multi-writer) is pre-applied to any future C9 sidecar."
+  ],
+  "tests_required": [
+    "test_as_of_returns_only_superseding_edge_after_t2 (T1/INV-1): seed a contradiction pair (same triple, t1 < t2, distinct evidence/confidence via add); as-of t_end (> t2) must return exactly edge-2 — both edges returned = FAIL (this is the test the INN-1 filter as specified cannot pass).",
+    "test_as_of_t_mid_edge1_t_end_edge2_t0_empty (T2/INV-2): after M1a, as-of t_mid returns only edge-1, as-of t_end only edge-2, as-of t0 < t1 returns empty facts for the triple.",
+    "test_as_of_input_normalization (T6/INV-6): 'Z' suffix, '-05:00' offset, and fractional-second forms are normalized or explicitly rejected; never a silent mis-ordered comparison.",
+    "test_as_of_default_path_unchanged (INV-10): no-flag query output is identical to pre-change behavior on a seeded DB.",
+    "test_fts5_heldout_paraphrase_recall_at_selector (T3/INV-3): seed >=100 entities with realistic names/aliases; run K held-out paraphrase/typo queries that exact/alias/substring miss; PASS only if >=30% resolved AND resolved candidates survive _graphs_recall's floor, measured at memory_selector output.",
+    "test_add_bulk_latency_fts5_on_vs_off (T4/INV-4): 1,000 edges, commits held constant (batch both arms per A12); >10% regression without compensating T3 gain fails.",
+    "test_selector_floor_interaction (M4): typo/paraphrase terms resolved by the FTS5 tier either clear _graphs_recall's min_score floor or rely on the documented 1/n fallback.",
+    "test_graph_lex_write_path_parity (INV-9): after sequences of add_edge/resolve_entity including duplicate-alias INSERT OR IGNORE cases, graph_lex's row set equals exactly the (entity_id, name ∪ aliases) projection — no missing rows, no duplicate rows.",
+    "test_graph_lex_rebuild_roundtrip (INV-9): drop graph_lex, run rebuild-lex, row set and query results identical.",
+    "test_alias_resolution_deterministic (INV-8): the same alias string under two entities resolves identically across runs at BOTH resolution sites (resolve_entity and query's alias tier).",
+    "test_contracts_and_canaries_unchanged (INV-7): contracts.py:233-240 pass; canary_p0_04.py:99-105 pass after all changes.",
+    "test_population_gate_harness (T5/INV-5): the <50-edges-over-N=4-weeks evaluation is executable with the pre-committed values and its outcome recorded."
+  ],
+  "acceptance_criteria": [
+    "AC1: T1/T2 pass on a seeded contradiction pair — as-of returns exactly one edge per t, matching INV-1/INV-2; the INN-1 filter as specified demonstrably fails T1 (documented as the kill evidence).",
+    "AC2: T6 passes — no --as-of input form produces a silent mis-ordered comparison.",
+    "AC3: contracts.py:233-240 and both canary surfaces (canary_native, canary_p0_04) pass unchanged after all changes.",
+    "AC4: default (no-flag) query output is indistinguishable from pre-change behavior on a seeded DB.",
+    "AC5: rebuild-lex reconstructs graph_lex from an empty FTS table with an identical row set and identical query results (projection property verified).",
+    "AC6: T3 reports the measured lexical resolution rate AND end-to-end survival rate at memory_selector output; the lexical tier ships only if both sub-conditions pass — otherwise it is removed.",
+    "AC7: T4 reports the measured write-path delta with commits held constant; >10% regression without compensating T3 gain removes the tier.",
+    "AC8: downstream documentation uses the M6 characterization ('transaction-time append log with same-triple supersession'), notes the A11 same-triple-only supersession limitation, and no longer claims 'bi-temporal E14 1:1'; the dead 'superseded-by' docstring at :37 is corrected.",
+    "AC9: the T5 population gate runs with the pre-committed N=4 weeks and the <50-edges threshold; its outcome (continue vs NO_INNOVATION_WARRANTED) is recorded for the issue.",
+    "AC10: read-layer changes never reach production ahead of write-side population (M5 sequencing verified in the change history)."
+  ],
+  "failure_modes": [
+    "Shipping the INN-1 filter against the current writer returns stale superseded facts as current knowledge (A2, critical) — blocked by sequencing step 1 and permanently guarded by INV-1.",
+    "Silent mis-ordered as-of comparison on 'Z'/offset input yields wrong fact sets (A4) — blocked by M2/INV-6.",
+    "Kill tests executed on an empty graph trivially return no-benefit, producing a wrong conclusion (A5) — blocked by M5 sequencing and INV-5.",
+    "FTS5-resolved candidates floored out at memory_selector, so the benefit never reaches the model (A6) — blocked by M4/INV-3 end-to-end measurement.",
+    "Alias ambiguity amplified by BM25 ranking over nondeterministic resolution (A7) — blocked by deterministic ORDER BY a.entity_id ASC at both sites (INV-8); global uniqueness revisited only on G3 evidence.",
+    "graph_lex drift if the alias INSERT OR IGNORE is ignored without checking rowcount — duplicate or missing FTS rows break projection parity — blocked by the committed maintenance protocol and test_graph_lex_write_path_parity.",
+    "Write-amplification misattributed: the dominant add-bulk cost is the existing per-call commit (graph_memory.py:213), not FTS5 (A12) — T4 holds commits constant to isolate the FTS5 delta.",
+    "graph_lex treated as a source of truth and drifting from entities/aliases — blocked by the projection framing, documented rebuild-lex command, and the rebuild roundtrip test (INV-9).",
+    "Assuming contradiction invalidation generalizes across differently-normalized restatements — it does not (A11: supersession keys on exact subj/pred/obj); documented per M6.",
+    "If the M1b fallback is ever activated: superseded_by chain terminals and potential cycles are unhandled today (CA6) — the chain-walk helper must define both before shipping.",
+    "The graph source being dormant in memory_selector.DEFAULT_SOURCES (G4, unverified this process) would moot both halves regardless of population — checked at sequence step 0."
+  ],
+  "rollback": "All changes are additive to a single-file SQLite store. Recovery path: (1) remove the --as-of flag and the FTS5 resolution tier from query() — the default active-only behavior is restored exactly (INV-10); (2) DROP the graph_lex virtual table — it is a projection, so no data is lost (INV-9); (3) the M1a write fix is backward-compatible and may stand alone: rows with valid_until=NULL remain interpretable as open-ended under the documented semantics, and because the DB was empty at fix time there is no legacy backfill to unwind. No schema migration, no external service, and no data export are required at any point.",
+  "deliberately_excluded": [
+    "Backend migration (C1 Neo4j, C2 FalkorDB, C3 LadybugDB) — rejected or deferred at APPLICABILITY; not reopened.",
+    "C9 lakehouse build (Pgembed / DuckDB aging / Icebug analytics) — track only; M7 constrains its future form; revisit only if the graph approaches SQLite's limits or the stack matures.",
+    "Full embedding/dense retrieval tier — model dependencies disproportionate to Rune's sub-1M regime.",
+    "True bitemporality beyond the M1a fix — E30 rates it 'Very high' complexity; learned_at remains a transaction-time proxy, documented as an as-of-knowledge approximation.",
+    "Global alias uniqueness schema change — deferred pending G3 ambiguity-rate evidence; deterministic ordering suffices for now.",
+    "Implementing the 'superseded-by' CLI command — the dead docstring at :37 is corrected instead; the command itself is required by no mitigation.",
+    "Changes to memory_selector._graphs_recall flooring logic — the selector is the measurement boundary (M4), not a modification target.",
+    "New research, external fetches, or reopening any rejected candidate — the epistemic process for this issue is complete; this stage only synthesizes."
+  ],
+  "qualify_refine_findings_resolution": [
+    {
+      "finding": "INTERFACE GAP (M3/FTS5 projection — blocks verbatim handoff)",
+      "resolution": "RESOLVED by committing the layout rather than delegating. The contentless DDL is retracted (see rejected_alternatives) and replaced in interfaces with: non-contentless CREATE VIRTUAL TABLE graph_lex USING fts5(name, alias, entity_id UNINDEXED, tokenize='unicode61'); one row per (entity_id, text) over entities.name ∪ aliases.alias; the UNINDEXED entity_id column is the sole FTS-row→entity mapping (gap (a)); the 1:N relation is represented one-row-per-alias plus one name-row per entity (gap (b)); maintenance is INSERT-only — name-row on entity creation, alias-row on add_edge's alias insertion only when the INSERT OR IGNORE actually inserted (rowcount==1) — so no UPDATE is ever needed and the contentless-UPDATE impossibility (gap (c)) is mooted by construction. Deletes do not exist in current code; any future deletion routes through rebuild-lex."
+    },
+    {
+      "finding": "PARAMETER GAP (T5/INV-5/AC9 — N never committed)",
+      "resolution": "RESOLVED by committing N=4 weeks. INV-5, sequence step 9, AC9, and test_population_gate_harness now all carry the concrete pre-committed values: N=4 weeks of real use, threshold <50 edges. The values are fixed in this artifact and may not be re-chosen after observing the data."
+    },
+    {
+      "finding": "MINOR GAP (M3/INV-8 — sort key unpinned)",
+      "resolution": "RESOLVED by naming the key: ORDER BY a.entity_id ASC LIMIT 1 at graph_memory.py:228-231, and the equivalent ORDER BY a.entity_id ASC added to resolve_entity's alias lookup at :147-151 (both sites exhibit the same nondeterminism; pinning only one would leave INV-8's observable property unverifiable)."
+    }
+  ]
+}
@@ -0,0 +1 @@
+{"success":true,"data":{"web":[{"url":"https://sqlite.org/forum/info/6ed6824176b9c773","title":"What does, if many threads and/or processes need to write ... - SQLite","description":"# What does, if many threads and/or processes need to write the database at the same instant, mean?\n### (2) By [ThanksRyan](https://sqlite.org/forum/timeline?ss=v&y=f&vfx&u=ThanksRyan) on 2021-04-10 23:13:09 in reply to [1](https://sqlite.org/forum/forumpost/7b7ea1373c) [[source]](https://sqlite.org/forum/forumpost/6ed6824176b9c773?raw)\nSQLite only supports one writer at a time per database file.\n\n### (4) By iio7 ( [iio7iio7](https://sqlite.org/forum/timeline?ss=v&y=f&vfx&u=iio7iio7)) on 2021-04-11 11:50:53 in reply to [1](https://sqlite.org/forum/forumpost/7b7ea1373c) [[link]](https://sqlite.org/forum/forumpost/e1903d54f15133ac) [[source]](https://sqlite.org/forum/forumpost/e1903d54f15133ac?raw)\n```\nPRAGMA journal_mode = WAL;\nPRAGMA temp_store = MEMORY;\nPRAGMA synchronous = NORMAL;\nPRAGMA cache_size = -64000;\n```","position":1},{"url":"https://news.ycombinator.com/item?id=31473373","title":"I've yet to see how you can use SQLite for a multi-user multi-write app ...","description":"SQLite uses a queue (in WAL mode) in order to handle concurrent writes. In WAL mode it can handle a single writer with concurrent readers. A single thread; no ...","position":2},{"url":"https://www.reddit.com/r/learnprogramming/comments/1l82ohn/confused_about_sqlite_and_concurrency/","title":"Confused about SQLite and concurrency : r/learnprogramming","description":"So sqlite, with WAL enabled, supports multiple readers at the same time, and supports reading and writing at the same time. The only thing it ...Question regarding multiple readers and writers : r/sqlite - RedditConcurrency when writing data into SQLite? : r/golang - RedditMore results from www.reddit.com","position":3},{"url":"https://www.bugsink.com/blog/database-transactions/","title":"Single-writer Database Architecture with SQLite - Bugsink","description":"SQLite allows only one writer at a time. Even in WAL mode, concurrent write transactions are not possible – any attempt to write while another ...","position":4},{"url":"https://stackoverflow.com/questions/9264772/sqlite-alternative-with-concurrent-writing-delphi","title":"SQLite alternative with concurrent writing (Delphi) - Stack Overflow","description":"You may consider using FireBird which has a more complex (and tuned) architecture for client-server. SQLite3 default writing method is expected ...SQLite Concurrent AccessSqlite WAL blocks despite doc sais it doesn'tMore results from stackoverflow.com","position":5},{"url":"https://oldmoe.blog/2024/07/08/the-write-stuff-concurrent-write-transactions-in-sqlite/","title":"The Write Stuff: Concurrent Write Transactions in SQLite","description":"SQLite, using the Write-Ahead-Log (WAL) journaling mode, supports an unlimited number of readers and a single writer any given moment.","position":6}]},"id":"01a08314-06fc-706f-becc-a9e4f0c2b9f2","creditsUsed":2}
@@ -0,0 +1 @@
+{"success":true,"data":{"web":[{"url":"https://berthub.eu/articles/posts/a-brief-post-on-sqlite3-database-locked-despite-timeout/","title":"What to do about SQLITE_BUSY errors despite setting a timeout","description":"# SQLite transactions\nYou can also force this decision with BEGIN IMMEDIATE, which always starts a write transaction.\n\n```sql\npragma journal_mode=\"wal\"; -- only have to do this once\ncreate table t (v INT) strict;\n.timeout 10000 -- 10 seconds\n```\n\nIf we leave the transaction on the left open for too long, the right side will get a SQLITE_BUSY error:\n\n# Getting into trouble\nAs noted, if you BEGIN a transaction in SQLite without specifying ‘immediate’, SQLite actually only begins a transaction after you submit the first statement, and it will pick the _kind_ of transaction based on that first statement (read-only or read-write).\n\nNo matter how high you set your .timeout, this scenario always delivers an instant SQLITE_BUSY error.","position":1},{"url":"https://lobste.rs/s/yapvon/what_do_about_sqlite_busy_errors_despite","title":"What to do about SQLITE_BUSY errors despite setting a timeout","description":"TLDR: if you're seeing SQLITE_BUSY errors, try using BEGIN IMMEDIATE for transactions that you know are going to be a write. It turns out I've ...","position":2},{"url":"https://news.ycombinator.com/item?id=45781519","title":"In SQLite, transactions by default start in “deferred” mode. This means ...","description":"The fix is to set a busy_timeout and to begin any transaction ... Note that busy_timeout is not applicable to SQLite in this case (the SQLITE_BUSY issued ...","position":3},{"url":"https://sqlite.org/forum/forumpost/04ed1d235b","title":"Help understanding the effect of BEGIN IMMEDIATE - SQLite","description":"# Help understanding the effect of BEGIN IMMEDIATE\n### (1) By Simon Willison ( [simonw](https://sqlite.org/forum/timeline?ss=v&y=f&vfx&u=simonw)) on 2024-06-21 22:17:11 [[link]](https://sqlite.org/forum/forumpost/119e937367a6a50c) [[source]](https://sqlite.org/forum/forumpost/119e937367a6a50c?raw)\nThe problem is that by upgrading a transaction after it has started, SQLite will immediately return a SQLITE_BUSY error without respecting the busy_timeout previously mentioned, if the database is already locked by another connection.\n\n### (2) By Nuno Cruces ( [ncruces](https://sqlite.org/forum/timeline?ss=v&y=f&vfx&u=ncruces)) on 2024-06-21 22:55:18 in reply to [1](https://sqlite.org/forum/forumpost/119e937367) [[link]](https://sqlite.org/forum/forumpost/650a97c05c9caacd) [[source]](https://sqlite.org/forum/forumpost/650a97c05c9caacd?raw)\nIt immediately gets a `SQLITE_BUSY` error and the connection B succeeds.\n\n### (7) By Ziad ( [ziadkh0](https://sqlite.org/forum/timeline?ss=v&y=f&vfx&u=ziadkh0)) on 2025-09-10 16:05:00 in reply to [1](https://sqlite.org/forum/forumpost/119e937367) [[link]](https://sqlite.org/forum/forumpost/10686f6a4024e2f2) [[source]](https://sqlite.org/forum/forumpost/10686f6a4024e2f2?raw)\n```\nStep | Terminal A:                          | Terminal B:\n-----|--------------------------------------|--------------------------\n   1 | $ sqlite3 immediate.db               |\n   2 | sqlite> PRAGMA busy_timeout=5000;    |\n   3 | sqlite> BEGIN;                       |\n   4 | sqlite> SELECT * FROM sqlite_master; |\n   5 |                                      | $ sqlite3 immediate.db\n   6 |                                      | sqlite> BEGIN IMMEDIATE;\n   7 | sqlite> CREATE TABLE test(id int);   |\n```\n\nIn terminal A you will get `Runtime error: database is locked (5)` error immediately (not respecting the `busy_timeout` of 5 seconds).","position":4},{"url":"https://sqlite-users.sqlite.narkive.com/66NfRrlL/implementing-busy-waiting-on-sqlite","title":"Implementing busy-waiting on SQLite","description":"If the transaction contains a command that will change the database (eg delete, update or insert), then use \"begin immediate\" to start the transaction, so that ...[sqlite] sqlite3_busy_timeout not avoiding \"database is locked\" errors ...[sqlite] busy_timeout() not working always?More results from sqlite-users.sqlite.narkive.com","position":5},{"url":"https://simonwillison.net/tags/sqlite-busy/","title":"Simon Willison on sqlite-busy","description":"The fix is to use BEGIN IMMEDIATE if you know your transaction is going to make a write. Bert provides the clearest explanation I've seen yet of ...","position":6}]},"id":"01a08313-b087-709b-9197-052863218223","creditsUsed":2}
@@ -0,0 +1 @@
+{"success":true,"data":{"web":[{"url":"https://stackoverflow.com/questions/3747232/how-expensive-sqlite3-connect-and-close-in-sqlite","title":"How expensive sqlite3.connect and close in SQLite? - Stack Overflow","description":"Connections are fairly expensive – they correspond to opening the file – but cursors aren't very so use as many as you need.python - Efficiency of reopening sqlite database after each queryCan I improve Sqlite Connection.Open time?More results from stackoverflow.com","position":1},{"url":"https://news.ycombinator.com/item?id=44530518","title":"SQLite async connection pool for high-performance - Hacker News","description":"Opening and closing SQLite connections is expensive. If we can re-use the same instance things go a lot faster. anacrolix on July 15, 2025 ...","position":2},{"url":"https://sqlite.org/forum/info/4393a42b3b5e2382","title":"Tips for getting SQLite under Python to perform better with more RAM?","description":"I'm interested in getting better performance out of SQLite on machines with more RAM, using the Python sqlite3 module from the standard ...Questions about running SQL queries in parallel for performance - SQLitesqlite write performance is slower than the filesystemMore results from sqlite.org","position":3},{"url":"https://remusao.github.io/posts/few-tips-sqlite-perf.html","title":"Getting the most out of SQLite3 with Python","description":"# Getting the most out of SQLite3 with Python\n## Use Bulk Operations\n```\nconnection.executemany(\n    'INSERT INTO my_table VALUE (?)',\n    iter_data()\n)\n```\n\n- `executemany`: **1.6** seconds\n\n## Use Pragmas\n```\nconnection.execute('PRAGMA synchronous = OFF')\n```\n\n```\nconnection.execute('PRAGMA journal_mode = WAL')\n```","position":4},{"url":"https://docs.python.org/3/library/sqlite3.html","title":"sqlite3 — DB-API 2.0 interface for SQLite databases — Python 3.14.7 ...","description":"# `sqlite3` — DB-API 2.0 interface for SQLite databases [¶](https://docs.python.org/3/library/sqlite3.html#module-sqlite3)\n## Reference [¶](https://docs.python.org/3/library/sqlite3.html#reference)\n### Connection objects [¶](https://docs.python.org/3/library/sqlite3.html#connection-objects)\n```\n>>> con.getlimit(sqlite3.SQLITE_LIMIT_SQL_LENGTH)\n1000000000\n```","position":5},{"url":"https://powersync.com/blog/sqlite-optimizations-for-ultra-high-performance","title":"SQLite Optimizations For Ultra High-Performance - PowerSync","description":"# SQLite Optimizations For Ultra High-Performance\n## Key SQLite Performance Optimizations To Consider\n### **#** 1: Enable Write-Ahead Logging (WAL) And Disable Synchronous Mode\n```\npragma journal_mode = WAL;\npragma synchronous = normal;\npragma journal_size_limit = 6144000;\n```\n\n### **#** 5: Optimize Concurrency\nHowever, each separate \"connection\" is effectively single-threaded.","position":6}]},"id":"01a08314-01b2-762f-a3be-ec169e73f991","creditsUsed":2}
@@ -0,0 +1 @@
+{"success":true,"data":{"web":[{"url":"https://pytest-xdist.readthedocs.io/en/stable/distribution.html","title":"Running tests across multiple CPUs — pytest-xdist documentation","description":"- Running tests across multiple CPUs\n\n# Running tests across multiple CPUs [](https://pytest-xdist.readthedocs.io/en/stable/distribution.html#running-tests-across-multiple-cpus)\n```\npytest -n auto\n```\n\nThis can lead to considerable speed ups, especially if your test suite takes a noticeable amount of time.\n\nWith `-n auto`, pytest-xdist will use as many processes as your computer\n\nif it is not or if it fails to determine the number of logical CPUs, fall back to `-n auto` behavior.\n\nUse `-n 0` to disable xdist and run all tests in the main process.\n\nTo specify a different meaning for `-n auto` and `-n logical` for your tests, you can:\n\n- `--maxprocesses=maxprocesses`: limit the maximum number of workers to\nprocess the tests.\n- `--max-worker-restart`: maximum number of workers that can be restarted\nwhen crashed (set to zero to disable this feature).\n\n```\n@pytest.mark.xdist_group(name=\"group1\")\ndef test1():\n      pass\n\n\nclass TestA:\n      @pytest.mark.xdist_group(\"group1\")\n      def test2():\n          pass\n```\n\n- `--dist no`: The normal pytest execution mode, runs one test at a time (no distribution at all).","position":1},{"url":"https://stackoverflow.com/questions/45733763/how-to-run-pytest-tests-in-parallel","title":"How to run pytest tests in parallel? - python - Stack Overflow","description":"UPDATE: The solution below is to demonstrate concurrent pytests are possible, but pytest-parallel is currently unmaintained. pytest-xdist is a ...pytest fixtures and threads synchronizations - Stack OverflowPytest with multiprocessing lock not working as expected when running ...More results from stackoverflow.com","position":2},{"url":"https://github.com/pytest-dev/pytest/discussions/12188","title":"Is there an easy way to disable thread parallelism for tests in one file?","description":"If you're using the pytest-xdist plugin … you can disable parallelism by specifying -n 0 when you run pytest.Is it possible to run in parallel only some of the tests ? #325 - GitHubEnforce serial execution of related tests · Issue #84 · pytest ... - GitHubMore results from github.com","position":3,"category":"github"},{"url":"https://qaskills.sh/blog/pytest-benchmark-performance-testing-guide","title":"pytest-benchmark: The Complete Performance Testing Guide (2026)","description":"# pytest-benchmark: The Complete Performance Testing Guide\n## Installing pytest-benchmark\n```bash\n# requirements-dev.txt\npytest>=8.0\npytest-benchmark>=4.0\n```\n\n```bash\npytest --version -V\n# Look for \"benchmark-x.y.z\" in the registered plugins list\n```\n\n## Saving benchmark results\n```bash\npytest --benchmark-save=baseline\n```\n\n## Grouping benchmarks for analysis\n```bash\npytest --benchmark-group-by=group\n```\n\n## Disabling garbage collection and calibration\n```bash\npytest --benchmark-disable-gc\n```\n\n## A complete CLI flag reference\n```ini\n[pytest]\naddopts = --benchmark-disable-gc --benchmark-sort=min\n```\n\n## Pitfalls and the noise problem\nThe result is that the same code can benchmark 30% faster or slower between two runs with no code change at all.\n\nFirst, do not run benchmarks under pytest-xdist; parallel workers contend for the same cores and destroy the measurement, so always run the benchmark suite single-process. Third, beware dead-code elimination at the Python level is not really a thing, but a benchmark whose result is never used can still mislead you if the function lazily defers work, so always consume the return value.\n\n## Frequently Asked Questions\n### Why are my benchmark results so noisy on CI?\nShared CI runners are multi-tenant, so your job competes for CPU, cache, and memory bandwidth with other tenants, producing swings of 30% or more with no code change. Always compare relative deltas against a baseline measured on the same runner type, set a generous fail threshold like `min:15%`, disable GC during timing, and never run benchmarks under pytest-xdist parallel workers.","position":4},{"url":"https://www.youtube.com/watch?v=tBnfDaPAH44","title":"Test Parallelization with pytest-xdist - YouTube","description":"In this video we look at how to parallelize tests with the plugin pytest-xdist! pytest-xdist Docs: https://pypi.org/project/pytest-xdist/ ...","position":5}]},"id":"01a08314-01f6-76e0-a85b-8892a8a01515","creditsUsed":2}
@@ -0,0 +1,85 @@
+[Index](https://avi.im/blag/)
+
+[About](https://avi.im/blag/about)[Now](https://avi.im/blag/now)
+
+# PSA: SQLite WAL checksums fail silently and may lose data
+
+22 Jul 2025
+
+This is a follow-up post to my [PSA: SQLite does not do checksums](https://avi.im/blag/2024/sqlite-bit-flip) and [PSA: Most databases do not do checksums by default](https://avi.im/blag/2024/databases-checksum). In the previous posts I mentioned that SQLite does not do checksums by default, but it has checksums in WAL mode. However, on checksum errors, instead of raising error, it drops all the subsequent frames. Even if they are not corrupt. This is not a bug; it’s intentional.
+
+Disclosure: I work at Turso, which maintains a SQLite fork, libSQL. Since libSQL is a fork, it also has the same issue.
+
+## SQLite WAL
+
+SQLite introduced WAL in 2010. It’s not the default mode, but you’re likely using it if you want higher write throughput. Whenever you make writes, they are first written to the WAL file. Then, during checkpoint operations, the database pages are written from the WAL to the main DB file. Each page in the WAL is called a frame. Each frame has a header, which comprises the frame number, page number, commit marker, and checksums.
+
+![SQLite Frame](https://avi.im/blag/images/2025/sqlite-frame.svg)
+
+The way checksums work in WAL is interesting. They use rolling checksums, meaning the checksum of the n+1 frame is computed with the checksum of the nth frame. In other words, a frame’s checksum depends on the previous frame.
+
+![SQLite Rolling Checksum](https://avi.im/blag/images/2025/sqlite-rolling-checksums.svg)
+
+## Recovery
+
+If one frame is found to have a checksum mismatch, you can’t be sure that the next frame isn’t corrupted either. What’s interesting is that when a frame is found to have a missing or invalid checksum, SQLite drops that frame and all the subsequent frames. This is [documented](https://www.sqlite.org/walformat.html#recovery):
+
+> Recovery works by doing a single pass over the WAL, from beginning to end. The checksums are verified on each frame of the WAL as it is read. The scan stops at the end of the file or at the first invalid checksum. The mxFrame field is set to the index of the last valid commit frame in WAL.
+
+Earlier I mentioned SQLite does not do checksums by default, so it won’t ever notice if a page is corrupt. So when is WAL checksum verification triggered? A WAL may contain multiple frames for the same page number. To make lookups faster, SQLite maintains an index called the WAL Index. This is the `.db-shm` file you often see. During the building of this index, SQLite checks the checksums.
+
+You can verify this in the code as well. The recovery process happens in [`walIndexRecover`](https://github.com/sqlite/sqlite/blob/version-3.50.3/src/wal.c#L1384), this calls [`walDecodeFrame`](https://github.com/sqlite/sqlite/blob/version-3.50.3/src/wal.c#L1000) which has this:
+
+```c
+/* A frame is only valid if a checksum of the WAL header,
+** all prior frames, the first 16 bytes of this frame-header,
+** and the frame-data matches the checksum in the last 8
+** bytes of this frame-header.
+*/
+nativeCksum = (pWal->hdr.bigEndCksum==SQLITE_BIGENDIAN);
+walChecksumBytes(nativeCksum, aFrame, 8, aCksum, aCksum);
+walChecksumBytes(nativeCksum, aData, pWal->szPage, aCksum, aCksum);
+if( aCksum[0]!=sqlite3Get4byte(&aFrame[16])
+ || aCksum[1]!=sqlite3Get4byte(&aFrame[20])
+){
+  /* Checksum failed. */
+  return 0;
+}
+```
+
+To trigger this issue, the following needs to happen:
+
+1. You have SQLite `.db` and `.db-wal` files, but no accompanying `.db-shm` file. Maybe your friend shared it with you, or you downloaded some data off the internet.
+2. Unclean shutdown during WAL write. The WAL index is updated after a successful write. Maybe after the WAL write, the process crashed, and the index wasn’t updated. On the next start, SQLite rebuilds the index.
+
+During this process, if there’s a checksum mismatch on a frame, that frame and the rest of the WAL frames are dropped. Even if they are not corrupt (technically)! Note that SQLite always checkpoints and truncates the WAL file on the last connection close.
+
+## Demo
+
+![](https://avi.im/blag/images/2025/sqlite-wal-checksum.gif)
+
+Alice would have lost money, [again](https://avi.im/blag/2024/sqlite-bit-flip). Poor Alice.
+
+## Thoughts
+
+1. I really don’t like that SQLite doesn’t throw any error on detection of corruption
+2. Since it automatically checkpoints every time, the data is lost too
+
+I’m not sure why this is the default behavior. Backward compatibility reasons? The checksums in WAL are likely not meant to check for random page corruption in the middle; maybe they’re just to check if the last write of a frame was fsynced properly or not?
+
+What I want: throw an error when corruption is detected and let the code handle it. Don’t checkpoint and truncate the WAL! Maybe provide an option for users to opt in to ignore the corruption and work with the existing behavior.
+
+In the demo, I corrupted a frame that belonged to an older version of a page. Meaning no new transactions can ever read that data. That frame is practically useless, yet it caused data loss. There are pages like belonging to an index or maybe some table that we don’t care about at all. With sophisticated recovery mechanisms, we could sometimes able to recover all the data.
+
+Overall, I don’t like the default that it does not raise an error. However, [Pekka Enberg](https://x.com/penberg) offered a different perspective that SQLite runs in embedded environments where there’s no server, and maybe core developers decided it may be better to limp along than crash.
+
+I would guess that other databases behave the same way, but I haven’t verified it myself. I was discussing this with [Alex Miller](https://transactional.blog/), and he raised an interesting point: SQLite mostly runs on mobile devices with cheap SD cards (as opposed to running on enterprise-grade SSDs), and corruptions are more common. So, it’s more important for SQLite to have corruption detection than other databases.
+
+Update:
+The paper [Redundancy Does Not Imply Fault Tolerance: Analysis of Distributed Storage Reactions to Single Errors and Corruptions](https://www.usenix.org/conference/fast17/technical-sessions/presentation/ganesan) is worth a read. Here is a [tweet from one of the authors](https://x.com/AishwaryaGanlat/status/1948473336717345115) in response to this article.
+
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+
+# What to do about SQLITE\_BUSY errors despite setting a timeout
+
+Posted on Feb 16 2025
+
+So I’m a huge SQLite fanboy and I use it for almost everything these days. Recently, the project added [sqlite3\_rsync](https://www.sqlite.org/rsync.html) which allows you to swiftly replicate your database to other servers (or to the same server if you want), and this really was the cherry on top for me.
+
+Last week however, I ran into one of my projects unexpectedly getting [SQLITE\_BUSY](https://www.sqlite.org/rescode.html#busy) errors. And then someone urged me to run ‘a real database’ (PostgreSQL), and that hurt.
+
+> The tl;dr on this, to prevent SQLITE\_BUSY errors even when setting a timeout, don’t ever upgrade transactions to read-write. If you know you are going to write in a transaction, use ‘BEGIN IMMEDIATE’, or start off with the write. But do read on for why this is so, and how other databases struggle with this problem as well.
+>
+> Thanks are due to PostgreSQL developer & backdoor-slayer [Andres Freund for sharing his wisdom on Mastodon](https://mastodon.social/@AndresFreundTec/114009633982257113), which found its way into this post. Mistakes remain mine though!
+
+Before we start, do know I love both PostgreSQL and SQLite, these are two very impressive projects, and we are extremely lucky that we get to benefit from all this excellence.
+
+# The problem
+
+When running in [WAL mode](https://www.sqlite.org/wal.html) (which you should), SQLite makes some explicit and detailed concurrency promises: “Readers do not block writers and a writer does not block readers. Reading and writing can proceed concurrently”. The devil is in those details however.
+
+Now, we can easily deal with _waiting_ for the database to do something. Often there aren’t that many writes, and if occasionally two writes have to wait for each other, this is not a problem, especially since SQLite is extremely fast anyhow. SQLite’s single writer mode will often in practice be faster than other server’s multiple writer models, if only because it has no interprocess/network latency penalty. Meanwhile, SQLite offers various timeout settings and functions to deal with waiting for write access.
+
+What is harder to deal with however is when queries or inserts don’t wait but immediately dump a SQLITE\_BUSY error on you, despite setting a timeout. It can be hard to recover from that.
+
+So why does this happen?
+
+# SQLite transactions
+
+SQLite allows you to [BEGIN a transaction](https://www.sqlite.org/lang_transaction.html) without telling it what kind of transaction this will be: read-only or a read-write transaction. SQLite actually determines this based on the first statement you execute within the transaction. If that is an UPDATE or a DELETE or anything else that changes things, you get a write capable transaction. Otherwise you get a read-only transaction. You can also force this decision with BEGIN IMMEDIATE, which always starts a write transaction.
+
+To demonstrate this, we’ll first setup a database:
+
+```sql
+pragma journal_mode="wal"; -- only have to do this once
+create table t (v INT) strict;
+.timeout 10000 -- 10 seconds
+```
+
+Next up, let’s open two parallel connections:
+
+```
+begin immediate;           |
+insert into t values (1);  | begin immediate; -- blocks
+commit;                    | -- we are unblocked
+                           | insert into t values(2);
+                           | commit;
+```
+
+This is all good. It may be disappointing that SQLite only allows one simultaneous writer, but at least this is clear, and by waiting for a bit, our writes do happen (sequentially). If we leave the transaction on the left open for too long, the right side will get a SQLITE\_BUSY error:
+
+```
+Runtime error: database is locked (5)
+```
+
+Figuring out the right timeout is not easy. But, if you get a timeout, you can reconsider, and perhaps decide to wait even longer.
+
+# Getting into trouble
+
+As noted, if you BEGIN a transaction in SQLite without specifying ‘immediate’, SQLite actually only begins a transaction after you submit the first statement, and it will pick the _kind_ of transaction based on that first statement (read-only or read-write).
+
+If you later in a read-only transaction try to write to the database somehow, SQLite will attempt to _upgrade_ your transaction to a write transaction. And this is where we can run into problems:
+
+```
+                           | begin;
+begin;                     | insert into t values(2);
+select count(1) from t;    | -- we are in a WRITE transaction
+insert into t values(3);   |
+Runtime error: database is locked (5) -- immediately
+```
+
+The right side opens a write transaction based on the initial ‘insert’ statement.
+The left side opens a read-only transaction, while the right side has a write transaction open. SQLite supports this just fine.
+
+Then however the left site tries to do an insert, which leads to an attempt to upgrade the transaction to read-write. And this fails immediately. No matter how high you set your .timeout, this scenario always delivers an instant SQLITE\_BUSY error. And this is frustrating.
+
+# Why does this have to happen?
+
+At this point, you might have preferred to have the insert on the left just wait it out until the transaction on the right is done. But no can do.
+
+SQLite implements a [transaction isolation mode called “serializable”](https://www.sqlite.org/isolation.html). The technical definition from [some kind of SQL standard informal draft review](https://en.wikipedia.org/wiki/Isolation_(database_systems)#Serializable) (?): “A serializable execution is defined to be an execution of the operations of concurrently executing SQL-transactions that produces the same effect as _some_ serial execution of those same SQL-transactions”.
+
+When the transaction on the left wanted to upgrade itself to a read-write transaction, SQLite could not allow this since the transaction on the right might already have made changes that the transaction on the left had not yet seen.
+
+This in turn means that if left and right transactions would commit sequentially, the result would not necessarily be what would have happened if all statements had been executed sequentially within the same transaction. So no go.
+
+Now, this is not a SQLite problem, all quality databases mostly do the same thing when in SERIALIZABLE mode.
+
+Let’s try it in PostgreSQL:
+
+```
+SET SESSION CHARACTERISTICS AS TRANSACTION ISOLATION LEVEL serializable;
+```
+
+Then we run two transactions:
+
+```
+                              | begin;
+begin;                        | select count(1) from t;
+select count(1) from t;       | insert into t values (2);
+insert into t values (1);     | commit;
+commit;                       |
+ERROR:  could not serialize access due to read/write dependencies among transactions
+DETAIL:  Reason code: Canceled on identification as a pivot, during commit attempt.
+HINT:  The transaction might succeed if retried.
+```
+
+It may be good to know that in many common cases, PostgreSQL can prove there are no serialization issues, and will in fact be able to commit both transactions without issue. But not always.
+
+Another key difference is that PostgreSQL, being an extremely impressive project, allows for multiple transaction isolation levels, some of which do not get you these errors (but also not this consistency). SQLite just has one mode (also due to its straightforward design which lacks row-level locks).
+
+It turns out that there is a fundamental issue with concurrent read-write access to all databases - you can have slow operations that never fail nor get errors, or you can run in faster modes where you could get inconsistent results, or you can pick a mode where you will have to learn how to recover from writes that failed and need to be reissued somehow. If someone smugly tells you their “real database” supports multiple writers, know that they probably aren’t aware of [these trade-offs](https://www.postgresql.org/docs/current/transaction-iso.html).
+
+By default, PostgreSQL runs in Read Committed isolation mode, which leads to the following behaviour that may be surprising for people coming from SQLite or MySQL:
+
+```
+BEGIN;                      | BEGIN;
+select count(1) from t;     | insert into t values (3);
+     4                      | COMMIT;
+select count(1) from t;     |
+     5                      |
+COMMIT;                     |
+```
+
+In SQLite and [MySQL](https://dev.mysql.com/doc/refman/8.4/en/innodb-transaction-isolation-levels.html), the left transaction would not have seen the insert that happened on the right. As long as the left transaction is open, no changes are observed. But in PostgreSQL’s default mode, you do see them. Note that MySQL defaults not to serializable but to ‘ [repeatable read](https://en.wikipedia.org/wiki/Isolation_(database_systems)#Repeatable_reads)’.
+
+Again, [this is all a matter of choice](https://mastodon.social/@AndresFreundTec/114009633982257113), and there are [lots of reasons to prefer one transaction isolation mode over another](https://www.postgresql.org/docs/current/transaction-iso.html). Just know and understand which one you are using!
+
+# Ok, but now what
+
+The excellent [PostgreSQL documentation notes that serializable mode can lead to failing transactions that need to be repeated](https://www.postgresql.org/docs/current/transaction-iso.html#XACT-SERIALIZABLE). And they also offer us advice for how to ameliorate that, and this advice is very useful for SQLite as well:
+
+- Declare transactions (or connections in SQLite) as READ ONLY when possible.
+- Control the number of active connections, using a connection pool if needed. This is always an important performance consideration, but it can be particularly important in a busy system using Serializable transactions.
+- Don’t put more into a single transaction than needed for integrity purposes.
+- Don’t leave connections dangling “idle in transaction” longer than necessary
+
+This is all mitigation. To absolutely prevent SQLITE\_BUSY errors, you have a few options (when running in WAL mode):
+
+- If you know you are going to write in a transaction, start it with a write, or use BEGIN IMMEDIATE
+- Just don’t use transactions, or effectively, use single-statement transactions
+
+You might read here and there to just always use BEGIN IMMEDIATE but that will easily cause timeouts, since you can only have a single write transaction open at a time.
+
+It is better to have a good think on how you do writes, and completely avoid transactions that have to be upgraded. Because that is where the immediate SQLITE\_BUSY errors come from once you’ve made a database connection.
+
+# SQLITE\_BUSY\_RECOVERY
+
+If your program starts by opening multiple SQLite connections at the same time, you might get a SQLITE\_BUSY error at that stage. This has to do with [the rolling the WAL journal when recovering from an unclean shutdown](https://www.sqlite.org/rescode.html#busy_recovery). If you open multiple SQLite connections at the beginning of your program, I recommend doing so sequentially. This admittedly is somewhat of a wart.
+
+# Some further reading
+
+- [Wikipedia page Isolation (database systems)](https://en.wikipedia.org/wiki/Isolation_(database_systems))
+- [SQLite Transactions page](https://www.sqlite.org/lang_transaction.html)
+- [SQLITE\_BUSY](https://www.sqlite.org/rescode.html#busy)
+- [How SELECT FOR UPDATE Works (in PostgreSQL)](https://haril.dev/en/blog/2024/04/20/select-for-update-in-PostgreSQL)
+
+Tags: [programming](https://berthub.eu/articles/tags/programming/)
+
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+
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+
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+[Bugsink](https://www.bugsink.com/)
+
+- [Docs](https://www.bugsink.com/docs/)
+- [Blog](https://www.bugsink.com/blog/)
+- [Code](https://github.com/bugsink/bugsink/)
+- [Community](https://www.bugsink.com/community/)
+- [Pricing](https://www.bugsink.com/#pricing)
+- [Sign Up](https://www.bugsink.com/register/15K/)
+
+[![Bugsink Logo](https://www.bugsink.com/static/images/bugsink-logo.7a9597e724ff.webp)](https://www.bugsink.com/)[Bugsink](https://www.bugsink.com/)
+
+[Docs](https://www.bugsink.com/docs/) [Blog](https://www.bugsink.com/blog/) [Code](https://github.com/bugsink/bugsink/) [Community](https://www.bugsink.com/community/) [Pricing](https://www.bugsink.com/#pricing) [Sign Up](https://www.bugsink.com/register/15K/)
+
+# The single-writer Database Architecture
+
+![Klaas van Schelven](https://www.bugsink.com/static/images/klaas.beec86a2df8b.webp)
+
+Klaas van Schelven;
+
+March 24, 2025 - 9 min read
+
+\| tags: [architecture](https://www.bugsink.com/blog/tags/architecture/)
+
+![A conveyor belt with lady-bugs](https://www.bugsink.com/static/images/conveyor-cropped-big.52fd9cc08fb0.webp)
+
+Conveyor belt with lady-bugs. Representing the idea of processing events in a predictable, sequential manner.
+
+
+**TL;DR**: Bugsink uses a **single-writer architecture** to keep database state consistent and predictable.
+This model is **built around SQLite’s concurrency model**: for writes, a global lock; for reads, snapshot isolation.
+Bugsink’s specific use case ( **event processing**) makes this model a perfect fit.
+
+### Introduction & Design Goals
+
+In this article, we’ll take a look at Bugsink’s transaction model, and how it uses SQLite’s unique properties to
+create a simple, stable, and efficient system.
+
+Bugsink is a self-hosted error tracker. This means that it’s built to be **simple to operate and safe to run**: everybody
+should be able to set it up and keep it running without too much hassle.
+
+It’s also designed to be **simple to maintain**: I’m a single developer taking on a market in which VC-backed _unicorns_ operate. This
+means that I need to be able to reason about the system’s behavior quickly and confidently, even if I haven’t touched
+that particular part of the code in months.
+
+Here’s how the broader design goals translate into the transaction model:
+
+- **Stability**: No weird edge cases, no locking errors, no surprises under load.
+
+- **Data Integrity**: The transaction model should ensure that data is never left in an inconsistent state, even if something goes wrong.
+(this is a bit of an open door, but it’s worth stating explicitly).
+
+- **Simplicity**: The transaction model should be simple to understand and implement. There’s one way to do it, it’s used
+everywhere, and it’s easy to reason about later. Think once, apply everywhere.
+
+- **Alignment with SQLite**: Lean into what SQLite is good at. Treat its limits as “features in disguise”, shaping
+forces that guide the design. Don’t fight the datbase.
+
+- **Fit with Bugsink’s Architecture**:
+Bugsink makes strong, opinionated choices, and the transaction model leans into them. Also: the way we interact with
+the database might just influence the way we structure the application.
+
+
+All of these goals point in the same direction: I want a system that works correctly, but without adding extra overhead
+to my development process.
+
+Contrast this with the typical “just don’t want to think about transactions at all” approach, where you just do CRUD
+operations throughout the code. That may just work, until it doesn’t. And that’s not acceptible to me.
+
+Still, the underlying objective of not having to think about transactions all the time _is_ very valuable. The
+transaction model should be a given, not something that needs to be rethought for every new feature.
+
+### SQLite in Production: the Basics
+
+When Bugsink was first developed (i.e. when this architecture materialized), we supported only a single database: SQLite.
+This means this story starts with a production-ready configuration of SQLite.
+
+By the way, that somewhat unusual choice was itself made to fit with the design goals of being easy to install and operate.
+
+As recommended by basically everyone, the first step is to enable [WAL mode](https://www.sqlite.org/wal.html). Without
+it, any write blocks all readers until it completes. That’s fine for scripts or low-traffic apps, but not acceptable for
+a production system. WAL mode avoids this by allowing readers and writers to operate concurrently. It’s
+the default in Bugsink, and the foundation for everything that follows.
+
+The second key concept to understand is how reads behave under WAL. SQLite provides [snapshot\\
+isolation](https://www.sqlite.org/isolation.html): a read transaction sees the database exactly as it was when the read
+began, even if concurrent writes are happening. Readers never see any writes that started after their transaction began.
+It also ensures the UI and API reflect a consistent view of the world, and it matches how most developers (humans, even)
+intuitively expect things to work.
+
+### Global write lock
+
+In the above, I mentioned that WAL mode allows readers and writers to operate concurrently. That’s true, in the sense
+that readers don’t block writers and vice versa.
+
+Regarding multiple writers operating at the same time, however, the story is different.
+**SQLite allows only one writer at a time**. Even in WAL mode, concurrent write transactions are not possible – any attempt
+to write while another write is in progress will block or fail with a `SQLITE_BUSY` error. This limitation applies
+across all tables and connections to the database: the write lock is effectively global.
+
+For many applications, that’s a dealbreaker. But it’s also one of the clearest boundaries SQLite enforces, and it gives
+you a strong guarantee: if a write is in progress, nothing else is modifying the database.
+
+### Turning a Weakness into Strength
+
+The global write lock might look like a limitation — but in Bugsink, it became part of the architecture.
+To turn this limitation into a strength, we embraced it fully.
+
+The key insight was this: Bugsink is, at its core, **an error-event processing machine**, and it’s this event processing
+that puts the overwhelming majority of writes into the database. The other 1% or so of writes, in systems under load, are
+user-triggered actions like marking an issue as resolved or changing settings.
+
+That makes it natural to **split the event-processing into ingestion and digestion phases**: receive events, queue them, and
+process them in some separate pipeline.
+
+This is exactly how Bugsink works in practice. Incoming events are accepted by a lightweight ingestion process, which
+does not write to the database, but instead enqueues a digestion task to be picked up “later”.
+
+A separate process reads from this queue and does the actual work of processing the event and writing it to the datbase,
+the “digestion”. For the purposes of this article, feel free to think of this **digestion process as a single-threaded,**
+**fully serialized process**. (In actuality, the process is multi-threaded and we just rely on SQLite to serialize writes,
+but that’s an implementation detail).
+
+By leaning into SQLite’s locking behavior rather than fighting it, the architecture avoids contention and becomes
+simpler overall.
+
+One major advantage of a single write architecture is that it removes the mental overhead of coordinating concurrent
+modifications. **With only one writer at a time, there’s no need to think about what might be changing in parallel**.
+
+For example, consider what happens when a new event comes in: the event itself needs to be stored, the corresponding
+issue’s event count must be incremented, and the project-wide counters need to be updated as well. In a concurrent
+system, each of these updates might require separate locks, retries, or careful coordination to avoid subtle bugs. But
+in Bugsink’s model, all of this happens in one transaction, with no other writes taking place at the same time.
+
+Of course, this does put the burden on the digestion process to be very fast: **since each digest operation is serialized,**
+**it must be able to keep up with the incoming event rate**. You can’t just “add more workers” to speed things up.
+But that’s a focused problem: one place to optimize, one code path to understand. Also: the fact that SQLite is so fast
+at writes (it’s a local database) helps a lot.
+
+Some of the associated optimazations are in fact made possible by the simple model itself: various denormalizations and
+caches are trivial to compute if you know you’re alone in the database. Consider counting things: when digesting, this
+becomes a simple plus-1 operation, and those counts themselves being available in the database means they can be read
+without doing a full table scan.
+
+### Technical Details
+
+Let’s see how the above principles are implemented in practice.
+
+#### Enabling WAL Mode
+
+Bugsink ensures that the database operates in Write-Ahead Logging (WAL) mode by executing:
+
+```
+
+
+
+
+
+
+
+
+
+  Copy
+PRAGMA journal_mode=WAL;
+PRAGMA journal_mode=WAL;
+```
+
+This configuration is applied during the initial setup of the database schema: a mechanism called _migrations_ is
+already in place to ensure that the database schema matches Bugsink’s requirements, and the WAL mode simply ties into
+that by being the first migration.
+
+This approach simplifies the setup process for users, as the system is ready for optimal performance out of the box.
+
+#### All writes use `BEGIN IMMEDIATE`
+
+To ensure that write operations never needlessly fail, Bugsink uses `BEGIN IMMEDIATE` for all write transactions. To
+understand why, let’s take a step back and look at how SQLite handles transactions.
+
+In SQLite, the default transaction mode (called “deferred”) doesn’t begin a write transaction until the first write
+operation is executed. If a transaction begins with a read, it starts as a read transaction; if a write is attempted
+later, SQLite tries to upgrade it to a write transaction. But if another connection is already in the middle of a write,
+that upgrade fails, and the operation returns `SQLITE_BUSY`.
+
+The reason is simple: read transactions operate on a stable snapshot of the database – as it existed when the
+read began. If a deferred transaction starts as a read and later attempts to write, SQLite faces a problem: the database
+may have changed in the meantime. SQLite would either have to break the promise of snapshot isolation to continue, or
+have the upgraded write overwrite the changes made by the concurrent write. Neither of those options are acceptible,
+so SQLite just says “no” – it errors out instead.
+
+There is a way to prevent this: by starting a transaction with `BEGIN IMMEDIATE`, it becomes a write transaction right
+away. That way, if the transaction starts at all, it’s guaranteed to be able to write later. There’s no mid-flight change
+of state, and the system stays predictable. The trade-off is that the transaction is now a write transaction from the
+start, and will thus have to wait for concurrent write transactions to finish before it can begin: it will have to wait
+for the global write lock, even for the operations in the transactions that are reads.
+
+That “trade-off” is a perfect match for the kind of writes Bugsink does: in the event digestion process the writes are
+sequential (one event is written after the other), and in the UI/API layer, writes are infrequent and can afford to wait
+a bit (under heavy load this might increase to half a second or so, but that’s still acceptable).
+
+#### Read or Write: The Handler Decides
+
+As per the above we take some care to tell SQLite about the kind of transaction we need: for operations that will
+(ultimately) involve writes, we start with `BEGIN IMMEDIATE`. For read-only operations, we start with `BEGIN`.
+
+To tie this back to Python code in the HTTP request/response cycle, each view in Bugsink is wrapped in a transaction
+of the correct type. For most views, we determine which type of transaction to use based on the HTTP method: `GET`
+requests are treated as reads, and get a standard read transaction (`BEGIN`). Anything else—`POST`, `PUT`, `PATCH`,
+`DELETE`—is treated as a write, and gets a `BEGIN IMMEDIATE` transaction.
+
+This is handled by a decorator called `@atomic_for_request_method`, which wraps the whole request. The main reason for
+doing this at the outermost level is that important reads (like checking project membership) often happen before the
+actual view function is called. Wrapping early ensures those reads are also included in the same transaction – and
+therefore later writes don’t error out.
+
+The case of inspecting the request method is just the default.
+In some places, we take a slightly more custom approach. The most common example of doing that is when expensive read
+operations are followed by write operations: in that case a read transaction is started for the expensive reads first.
+Then a separate write transaction is started (no upgrading). This ensures that the time spent by the expensive read
+operations does contribute to the time the write transaction is open, and hence to the time the global write lock is held.
+
+Of course, doing a single logical operation in multiple database transactions does require extra work, because the
+results of the read transaction need to be somehow passed to the write transaction, but without assuming that the data
+corresponds to a single point in time. In other words: this is the kind of optimization where the design goal of simplicity
+is at odds with the design goal of performance.
+
+### MySQL and Postgres
+
+As mentioned earlier, Bugsink started with SQLite as the only supported database. This is the database the transaction
+model was designed around. However, the system has since expanded to support other databases as well.
+
+In addition to SQLite, Bugsink currently **supports MySQL and has experimental support for Postgres**. Despite differences
+between these systems and SQLite, the core transactional model has been preserved. Thanks to the use of an ORM, most of
+the database logic remains portable, with only minimal backend-specific handling.
+
+Unlike SQLite, neither MySQL nor Postgres offer an exact equivalent of `BEGIN IMMEDIATE`. However, similar behavior can
+be achieved by acquiring an explicit lock at the start of the transaction. We simply issue a `SELECT ... FOR UPDATE`
+on a known, singleton, row. This ensures that only one transaction proceeds at a time, effectively emulating SQLite’s
+“one writer at a time” behavior.
+
+The other property that we rely on, namely “snapshot isolation”, is also present (and is the default) in MySQL and
+Postgres.
+
+The fact that these databases are in the client/server model may also mean that they’re more slow to write to than
+SQLite, which could make the global write lock more of a bottleneck. This is something that will need to be monitored
+as the system grows.
+
+That said, full global locking is likely unnecessary for most real-world workloads. The database tables in Bugsink that
+are involved in the event ingestion process are already partitioned by project, and most other tables are as well. This
+allows for a project-level global write-lock strategy for these databases, which would allow for more parallelism than
+SQLite’s global write lock.
+
+### Conclusion
+
+Bugsink’s transaction model is designed to be simple, stable, and efficient. By embracing SQLite’s limitations and
+building around them, the system avoids many of the pitfalls that can come with more complex transaction models.
+
+The model is built around the idea of a single writer at a time, which simplifies the system and ensures that writes
+are always consistent. This approach is particularly well-suited to the event-processing nature of Bugsink, where most
+writes are sequential and can be handled in a single transaction.
+
+The model has been successfully extended to support MySQL and Postgres, with only minimal changes required. The core
+principles of the model remain the same, and the system continues to operate efficiently and predictably.
+
+If you’re considering using SQLite in a production system, or if you’re looking for a simple, reliable transaction model
+for your application, Bugsink’s approach is a good place to start.
+
+[About](https://www.bugsink.com/about/)
+
+[Terms](https://www.bugsink.com/terms-and-conditions/) [Privacy](https://www.bugsink.com/privacy-policy/) [Cookies](https://www.bugsink.com/privacy-policy/#cookies) [LinkedIn](https://www.linkedin.com/company/bugsink)
+
+[Discord](https://discord.gg/6Af6Yzz77C) [🇪🇺 Made & Hosted in the EU](https://www.bugsink.com/about/)
@@ -0,0 +1 @@
+{"success":true,"data":{"web":[{"url":"https://sqlite.org/forum/info/117c91891cf7ac15","title":"WAL mode speed vs normal comparison - SQLite User Forum","description":"WAL is about concurrency, not speed. How could it be faster, for a single connection? Has to potentially re-assemble a table (or index) pages ...WAL journal and threading modewal checkpointing very slowMore results from sqlite.org","position":1},{"url":"https://javascript.plainenglish.io/stop-the-sqlite-performance-wars-your-database-can-be-10x-faster-and-its-not-magic-156022addc75","title":"Stop the SQLite Performance Wars: Your Database Can Be 10x Faster ...","description":"# Stop the SQLite Performance Wars: Your Database Can Be 10x Faster (and it’s not magic!) ✨🚀\n## The Great Showdown: Rollback vs. The WAL Wizardry\n- **With WAL:** The exact same test was completed in a blistering **568 milliseconds**! 💥\n\n## Get Rogerio Amorim’s stories in your inbox\n```\nPRAGMA journal_mode = WAL;\nPRAGMA synchronous = NORMAL;\n.timer on\nBEGIN TRANSACTION;\n-- Run the exact same batch of INSERTs or UPDATEs from the previous test.\nEND TRANSACTION;\n.timer off\n```","position":2},{"url":"https://www.reddit.com/r/sqlite/comments/1ecjvst/wal_mode_sqlite3_bulk_updatesinserts/","title":"WAL Mode, SQLite3 Bulk updates/inserts : r/sqlite - Reddit","description":"WAL mode is slower than JOURNAL_MODE=DELETE for inserts. WAL stands for Write Ahead Log. not perform the same thing because another process ...Sqlite wal mode reliable for multiple writers without readers?Concurrency when writing data into SQLite? : r/golangMore results from www.reddit.com","position":3},{"url":"https://www.youtube.com/watch?v=qf0GqRz-c74","title":"SQLite's WAL mode is fast fast - YouTube","description":"Want to learn more SQLite? Check out the full course: https://highperformancesqlite.com. Get your free SQLite reference guide: ...","position":4},{"url":"https://superuser.com/questions/1938008/why-is-sqlite-wal-mode-so-much-faster-than-default-delete-mode-for-concurrent-wr","title":"mysql - Why is SQLite WAL mode so much faster than default DELETE ...","description":"The write performance improved drastically, almost by a factor of 4 or 5, and the disk activity dropped significantly. I understand that WAL ...","position":5},{"url":"https://github.com/cashubtc/nutshell/issues/907","title":"SQLite: enable WAL mode and busy_timeout for concurrent write ...","description":"# SQLite: enable WAL mode and busy_timeout for concurrent write performance#907\n## Problem\n```\n2026-02-25 19:27:31 | ERROR | cashu.mint.app:catch_exceptions:107 | Exception: failed to acquire database lock on None after 5s and 1 trials (1772047603357)\n2026-02-25 19:27:32 | ERROR | cashu.core.db:connect:243 | Error in session trial: 1 (1772047652030): proofs already spent\n2026-02-25 19:27:32 | ERROR | cashu.mint.db.write:_verify_spent_proofs_and_set_pending:84 | Failed to set proofs pending: proofs already spent\n```","position":6,"category":"github"}]},"id":"01a08313-ab43-724e-82f5-1e62c6d634f6","creditsUsed":2}
@@ -0,0 +1 @@
+{"success":true,"data":{"web":[{"url":"https://www.sqlite.org/wal.html","title":"Write-Ahead Logging - SQLite","description":"# 1. Overview\n4. ~~It is not possible to open [read-only WAL databases](https://sqlite.org/wal.html#readonly).\nThe opening process must have write privileges for \" `-shm`\"\n[wal-index](https://sqlite.org/walformat.html#shm) shared memory file associated with the database, if that\nfile exists, or else write access on the directory containing\nthe database file if the \" `-shm`\" file does not exist.~~\nBeginning with [version 3.22.0](https://sqlite.org/releaselog/3_22_0.html) (2018-01-22), a read-only\nWAL-mode database file can be opened if\nthe `-shm` and `-wal` files\nalready exist or those files can be created or the\n[database is immutable](https://sqlite.org/uri.html#uriimmutable).\n\n# 7. Implementation Of Shared-Memory For The WAL-Index\nleading to database corruption.\n\nthink this is a major concern since the wal-index rarely exceeds\n\n# 11. The WAL-Reset Bug\n## 11.1. Bug Details\n6. Later when a third checkpoint occurs, the third checkpoint skips all\nor part of the transaction that was written in step 3. Thus parts of\nthe transaction from step 3 never reach the database file, and the\ndatabase file goes corrupt.\n\n## 11.2. Low Probability Of Occurrence\nSo much so that the SQLite developers were unable","position":1},{"url":"https://stackoverflow.com/questions/46023203/sqlite-3-wal-mode-multiple-processes-frequently-corrupting-database","title":"SQLite 3 WAL mode multiple processes frequently corrupting ...","description":"This seems to mostly occur if a process crashed after having opened a connection (doesn't matter if it's opened with a SQLITE_OPEN_READONLY flag ...Is it safe to delete sqlite's WAL file? - Stack OverflowHow safe is SQLite WAL on power failures? - Stack OverflowMore results from stackoverflow.com","position":2},{"url":"https://www.sqlite.org/walformat.html","title":"WAL-mode File Format - SQLite","description":"of the WAL-index are deliberately omitted since those details\n\nwhen it pertains to WAL mode processing.\n\n# 1. Files On Disk\n## 1.3. The Wal-Index or \"-shm\" file\nclient to connect to a quiescent database will normally truncate the In fact, if there were a mechanism by which SQLite could tell the it in cache memory, SQLite would use that mechanism to avoid any","position":3},{"url":"https://avi.im/blag/2025/sqlite-wal-checksum/","title":"PSA: SQLite WAL checksums fail silently and may lose data - blag","description":"SQLite WAL has checksums, but on corruption it drops all the data and does not raise error.","position":4},{"url":"https://sqlite.org/forum/info/47107ab818977549?t=h","title":"How exactly does corruption happen during WAL checkpoint? - SQLite","description":"# How exactly does corruption happen during WAL checkpoint?\n### (1) By esiy ( [tempacc423513](https://sqlite.org/forum/timeline?ss=v&y=f&vfx&u=tempacc423513)) on 2024-02-02 08:57:47 [[source]](https://sqlite.org/forum/forumpost/47107ab818977549?raw)\n```\nOne of the instances mentioned in the docs [1] when it comes to WAL and DB corruption is (section 3.1):\n\nSTATEMENT A:\n\n\"In WAL mode, the only time that a failed sync operation can cause database corruption is during a checkpoint operation.\"\n\nThe checkpointing itself is described in the docs [2] as a couple of syncs (section 4.3):\n- first of WAL itself; prior to the merging the WAL records with the DB; and\n- then of the DB; prior to resetting the WAL.\n\nHowever, also in the docs [3] regarding performance considerations (section 2.3), it is pointed out that despite the checkpointer attempting \"as many sequential page writes\" that are interspersed by \"many seek operations\", even when \"a separate thread\" is used for checkpointing (so it does not happen with the commit that got it past WAL limit), then the thread \"that is doing database queries and updates will never block on a sync operation.\" Concluding that:\n\nSTATEMENT B:\n\n\"The downside to this configuration is that transactions are no longer durable and might rollback following a power failure or hard reset.\"\n\nSo, *other than* the loss of durability, what is meant by the \"corruption\" in STATEMENT A above and how exactly does it occur?\n\nThanks anyone who helps me not to go read through the code to figure this out.\n\n[1] https://www.sqlite.org/howtocorrupt.html\n[2] http://www.sqlite.org/draft/fileformat2.html#walformat\n[3] https://www.sqlite.org/wal.html\n```\n\n### (2) By Dan Kennedy ( [dan](https://sqlite.org/forum/timeline?ss=v&y=f&vfx&u=dan)) on 2024-02-02 10:54:42 in reply to [1](https://sqlite.org/forum/forumpost/47107ab818?t=h) [[link]](https://sqlite.org/forum/forumpost/39139916c802d571?t=h) [[source]](https://sqlite.org/forum/forumpost/39139916c802d571?raw)\nAnd then may overwrite, truncate or delete the wal file. If at that point the OS crashes, or the power fails, and the sync operation was not implemented correctly, someLine truncated
@@ -0,0 +1,108 @@
+{
+  "process_id": "research-262-r1",
+  "issue": 262,
+  "round": 1,
+  "stage": "ADVERSARIAL",
+  "title": "sqlite WAL performance in concurrent Python applications (acceptance-test question, repo-specific)",
+  "method_note": "New searches this stage (6 firecrawl queries, 4 full-page scrapes) targeted EXCLUSIVELY at counter-evidence to the emerging preferred approach inferred from DEFINE + INWARD + OUTWARD_READING: 'WAL mode + per-connection PRAGMA stack (busy_timeout, synchronous=NORMAL) + BEGIN IMMEDIATE + retry, validated by a pytest(-benchmark) acceptance test over Rune's multi-process topology.' Sources S1-S11 from OUTWARD_READING are referenced by ID; new adversarial sources are A1-A7. No advocacy for the preferred approach is included, per stage contract.",
+  "preferred_approach_under_attack": "Enable WAL on Rune's SQLite databases; apply a hardened PRAGMA stack (busy_timeout, synchronous=NORMAL, wal_autocheckpoint) on every fresh per-call connection; use BEGIN IMMEDIATE for known-write transactions; retry on SQLITE_BUSY; validate with a pytest-based multi-process acceptance test (pytest-benchmark for perf assertions) asserting checkpoint progress after stale-reader release.",
+  "attacks": [
+    {
+      "id": "X1",
+      "target": "Core premise: WAL improves Rune's concurrency/performance",
+      "attack": "WAL does not help Rune's actual bottleneck and may regress writes. (a) WAL adds an extra copy of every committed page (write amplification): commits go to the WAL AND must later be copied back to the main DB by checkpoints, so write throughput can be LOWER than journal_mode=DELETE for insert-heavy workloads (A2 reddit r/sqlite; A3 sqlite.org/forum 117c91891cf7ac15 'WAL is about concurrency, not speed'). (b) OUTWARD_READING's own S3 found WAL did NOT raise the concurrent-write ceiling (~500 simultaneous inserts failed identically with and without WAL, O8) — the repo's own workload (per-call fresh connections writing, I2/I4) is exactly the write-heavy multi-writer case WAL cannot scale: exactly one writer at a time (S1/O1). (c) S4's production incident (O9) shows multi-process writers on shared storage losing committed orders even in WAL. If Rune's pain is writer/writer contention, WAL is not the treatment and the acceptance test built around WAL success criteria measures the wrong thing.",
+      "severity": "HIGH",
+      "sources": ["A2", "A3", "S3/O8", "S1/O1", "S4/O9"]
+    },
+    {
+      "id": "X2",
+      "target": "busy_timeout as the primary SQLITE_BUSY mitigation",
+      "attack": "busy_timeout has documented holes that retry logic alone does not patch. (a) In deferred transactions, a read that upgrades to write later gets SQLITE_BUSY IMMEDIATELY, ignoring busy_timeout entirely — the classic fix is BEGIN IMMEDIATE for known-write transactions (A4 berthub.eu, confirmed by sqlite.org forum + Simon Willison notes; also HN 45781519). This contradicts any design that applies busy_timeout and expects writers to queue: only BEGIN IMMEDIATE transactions actually wait. (b) S6's diagnostic runbook: PASSIVE checkpoints ALWAYS return busy=0 — a monitoring/assertion scheme reading the busy column will systematically report 'no contention' during starvation. (c) WAL checkpoints bypass the busy handler in some paths: concurrent checkpoint attempts return SQLITE_BUSY without invoking the busy handler at all (S2/O6), so connection-level busy_timeout does not help checkpoint coordination; explicit retry-at-app-level is mandatory, not optional. The preferred approach as stated ('set busy_timeout, retry') is insufficient; the test must distinguish deferred-upgrade BUSY (immediate, un-timed) from writer-queue BUSY (timed).",
+      "severity": "HIGH",
+      "sources": ["A4", "S2/O6", "S6/O11"]
+    },
+    {
+      "id": "X3",
+      "target": "Per-connection PRAGMA stack + fresh connections per call (Rune's topology, reinforced by S8/O14)",
+      "attack": "The fresh-connection-per-call pattern is itself the cost center, and the preferred approach bakes it in rather than questioning it. Connections are expensive (they correspond to opening the file); reopening per call has measurable overhead (A5 SO 3747232; HN 44530518 'opening and closing SQLite connections is expensive... reuse is much faster'). A simpler alternative that the preferred approach does not consider: a single dedicated DB-writer thread fed by a queue (community-standard answer, S11/O18) or a persistent connection/pool per process eliminates BOTH the per-connect PRAGMA stack cost AND the sqlite-vec per-connection extension-load cost (curator.py:695, I3/I5 mapping) that the acceptance test would otherwise just accept as fixed overhead. The test design risk: benchmarking the fresh-connection pattern against itself proves nothing; the baseline must include the single-writer-queue alternative or the acceptance test endorses the incumbent by construction.",
+      "severity": "MEDIUM-HIGH",
+      "sources": ["A5", "S11/O18", "I3 curator.py:695"]
+    },
+    {
+      "id": "X4",
+      "target": "pytest-benchmark as the performance-assertion harness (O17)",
+      "attack": "pytest-benchmark is a poor fit for the acceptance test the pipeline is converging on. (a) It benchmarks single functions with per-call calibration — a multi-process concurrency scenario (N writer processes + stale reader + checkpoint observation) is not a callable you can benchmark; it would need artificial wrapper functions that distort the measurement. (b) It AUTO-DISABLES under pytest-xdist (confirmed in S10 docs, O17) — i.e., the canonical pytest parallelization layer silently disables the benchmarking layer, so any attempt to parallelize the concurrency test kills the perf assertions. (c) Timing assertions for checkpoint-progress-after-release are deadline/liveness properties, not throughput medians; a plain wall-clock deadline assertion in a normal test is more honest and simpler. The simpler alternative: no pytest-benchmark at all; assert deadlines and WAL-size bounds with time.monotonic() + PRAGMA wal_checkpoint(PASSIVE) counters.",
+      "severity": "MEDIUM-HIGH",
+      "sources": ["S10/O17"]
+    },
+    {
+      "id": "X5",
+      "target": "Silent data-loss failure mode the preferred approach does not address",
+      "attack": "WAL's rolling-checksum recovery silently DROPS committed frames on any checksum mismatch and never raises an error: the scan stops at the first invalid checksum, mxFrame is set to the last valid commit frame, and the data after it is discarded at the next checkpoint+truncate (A1 avi.im, quoting sqlite.org/walformat.html#recovery and wal.c/walDecodeFrame; corroborated by Lobsters discussion). Preconditions match Rune: unclean shutdown mid-WAL-write (crashed background task, I4 auto_tasks.py) + wal-index rebuild on next open. Separately, S4/O9 documents real order loss in production with multi-process writers in WAL. An acceptance test that only asserts throughput and checkpoint progress would PASS while this failure mode exists. Any test claiming 'WAL acceptance' must include a crash/kill-during-write scenario (SIGKILL a writer mid-transaction, reopen, verify committed data present or cleanly absent — no silent truncation of acknowledged commits).",
+      "severity": "HIGH",
+      "sources": ["A1", "S4/O9", "S6"]
+    },
+    {
+      "id": "X6",
+      "target": "Multi-process same-host WAL stability claims (O4 'validates repo topology')",
+      "attack": "Field reports contradict the safe-multi-process narrative. SO 46023203 (A6): recurring 'malformed database' reports after adopting WAL with multiple processes including read-only openers, suspected -shm/-wal state mismatch after a process crash; accepted answer links it to a Python client crashing inside an open transaction while a concurrent process queries, resolved only by guaranteeing transaction close on crash. Rune's auto_tasks.py background jobs (I4) are exactly the crash-prone multi-process population. sqlite.org/wal.html itself (S1) lists residual BUSY/corruption surfaces (recovery after crashed connection, exclusive locking modes) that the preferred approach's PRAGMA stack does not touch. If Rune's processes can die mid-transaction (they can — background jobs), the acceptance test needs process-kill coverage, and the 'WAL is safe for multi-process same-host' premise is contingent, not guaranteed.",
+      "severity": "MEDIUM",
+      "sources": ["A6", "S1/O4", "I4"]
+    },
+    {
+      "id": "X7",
+      "target": "BEGIN IMMEDIATE + retry as complete write-contention strategy",
+      "attack": "BEGIN IMMEDIATE shifts the failure from 'immediate BUSY on upgrade' to 'unbounded wait under the write lock' — with long write transactions, every other writer blocks up to busy_timeout and then fails anyway; retry-with-backoff under sustained multi-writer load produces livelock-ish behavior (repeated timeout + retry storms) that no source in the pipeline has bounded. A6's asker explicitly could not coordinate two writer processes without IPC-level coordination and considered falling back to journal_mode=DELETE. The simpler alternative (single serialized writer, X3) eliminates the entire BEGIN IMMEDIATE/retry/timeout tuning problem. The acceptance test as sketched (O13 Given/When/Then) contains no sustained-contention scenario that would surface retry-storm behavior.",
+      "severity": "MEDIUM",
+      "sources": ["A4", "A6", "X3"]
+    },
+    {
+      "id": "X8",
+      "target": "S8 (productionhardening.org) quantitative claims — quarantine confirmed",
+      "attack": "OUTWARD_READING flagged S8's numbers (40-60% faster writes with synchronous=NORMAL, 15-30% FULL penalty, 256MB mmap) as unverified; this stage's searches surfaced ZERO corroboration (no independent source repeats these figures), and the site remains anonymous. Adversarial recommendation: strike S8's numbers from any synthesis; keep only its mechanism-level advice that is independently confirmed (per-connection PRAGMA application is real but see X3 for its cost).",
+      "severity": "MEDIUM",
+      "sources": ["S8/O15"]
+    }
+  ],
+  "simpler_alternatives_found": [
+    {
+      "id": "ALT1",
+      "alternative": "Single dedicated DB-writer thread/queue per process, or fully serialized writes (Bugsink-style single-writer architecture)",
+      "evidence": "S11/O18 (community-accepted Python pattern), A7 Bugsink post (production system 'built around SQLite's concurrency model: for writes, a global lock; for reads, snapshot isolation' — no lock errors, no retry logic, no busy_timeout tuning), X3/X7 analysis",
+      "cost_vs_preferred": "Removes BEGIN IMMEDIATE/retry/timeout tuning entirely; removes most SQLITE_BUSY surface; costs one queue + writer thread per process (vs per-call connections today)"
+    },
+    {
+      "id": "ALT2",
+      "alternative": "Plain deadline assertions (time.monotonic + PRAGMA wal_checkpoint(PASSIVE) tuple sampling) instead of pytest-benchmark",
+      "evidence": "S10/O17 xdist auto-disable + single-function model; S6/O12 prescribe exactly the PASSIVE-tuple sampling pattern as the diagnostic primitive",
+      "cost_vs_preferred": "Removes a dependency and a misleading harness; loses automatic regression tracking and JSON comparison reporting"
+    },
+    {
+      "id": "ALT3",
+      "alternative": "Persistent per-process connections (or small pool) instead of fresh connections per call",
+      "evidence": "A5 (SO 3747232, HN 44530518: connect/close is expensive; reuse much faster); eliminates repeated sqlite-vec load cost (I3 curator.py:695)",
+      "cost_vs_preferred": "Connection lifecycle becomes explicit app state (fork-safety, stale-connection recovery must be handled); but PRAGMA stack is applied once, not per call"
+    },
+    {
+      "id": "ALT4",
+      "alternative": "Question the WAL mandate itself: if Rune's workload is write-dominated multi-process, journal_mode=DELETE with a single writer path may be equal or faster (WAL adds write amplification)",
+      "evidence": "A2 (WAL slower than DELETE for bulk inserts), A3 (WAL is about concurrency, not speed), S3/O8 (WAL did not raise concurrent-write ceiling)",
+      "cost_vs_preferred": "Loses reader/writer concurrency (readers block during writes) — only viable if Rune's actual contention is writer/writer, which the acceptance test must MEASURE before assuming"
+    }
+  ],
+  "negative_results": [
+    "WAL did not raise the concurrent-write ceiling in the closest public test harness (~500 simultaneous single-row inserts, S3/O8) — empirical negative on the 'WAL improves concurrent writes' premise.",
+    "WAL mode measured SLOWER than journal_mode=DELETE for insert/bulk-update workloads (A2, r/sqlite) — write amplification is a real regression risk for write-dominated workloads.",
+    "busy_timeout is silently ignored for deferred-transaction upgrade contention (A4) — a 'set timeout and retry' strategy fails in exactly the mixed read-then-write pattern common in application code.",
+    "PASSIVE checkpoint busy column is always 0 (S6) — contention-monitoring schemes built on it report zero contention during active starvation (measurement negative).",
+    "pytest-benchmark auto-disables under pytest-xdist (S10) — the two layers of the proposed harness are mutually exclusive in the parallel case the test needs."
+  ],
+  "limitations_of_stage": [
+    "Adversarial scope was counter-evidence search, not measurement: no benchmarks were run; all quantitative claims are source-attributed, and the strongest ones (A1, A2, A4) are mechanism-level rather than Rune-workload-specific.",
+    "A2 (Reddit) and A6 (SO, 2-score answer) are community-sourced; used as documented failure reports, not as measurements.",
+    "A7 (Bugsink) is a single vendor's architecture post for an event-processing workload; its single-writer pattern is evidence of a viable simpler alternative, not proof it fits Rune's TUI + background-job workload.",
+    "S4's incident attribution remains contested (per OUTWARD_READING); used here only as a failure-mode inventory, not as a WAL-specific indictment.",
+    "The 'preferred approach' attacked here was INFERRED from prior-stage artifacts (DEFINE capsule text was truncated; no explicit preferred_approach field existed), so attacks target the approach most consistent with all four completed stages. If the DEFINE artifact specifies a different preferred approach, X1-X8 must be re-aimed."
+  ],
+  "next_stage_hint": "INNOVATION: (1) decide workload characterization FIRST — the acceptance test's first experiment should measure Rune's actual reader/writer vs writer/writer contention split before asserting any WAL benefit (X1/ALT4); (2) add a SIGKILL-mid-write crash scenario with post-reopen committed-data verification (X5/X6); (3) replace pytest-benchmark perf assertions with deadline assertions (X4/ALT2); (4) put the single-writer-queue alternative (ALT1/ALT3) into the test matrix as a baseline, not just the WAL PRAGMA stack."
+}
@@ -0,0 +1,230 @@
+{
+  "process_id": "research-262-r1",
+  "issue": 262,
+  "round": 1,
+  "stage": "OUTWARD_READING",
+  "title": "sqlite WAL performance in concurrent Python applications (acceptance-test question, repo-specific)",
+  "method_note": "Primary sources fetched and read in full this stage plus in the prior partially-completed OUTWARD_READING session (ses_-ffe5f7d08ef0effe7822prgaw, which read S1-S3). No new search queries generated, per stage contract. Claims below carry source IDs (S1-S10); repo claims from INWARD (I1-I5) are referenced for mapping only.",
+  "sources": {
+    "S1": {
+      "url": "https://sqlite.org/wal.html",
+      "type": "official_docs",
+      "authority": "high (canonical SQLite documentation)",
+      "read_in": "prior session (ses_-ffe5f7d08ef0effe7822prgaw); claims verified against that session's extraction",
+      "limitations": ["Documents C-library behavior; Python sqlite3 module wraps the same library so semantics carry over, but Python-side ergonomics (isolation_level, implicit transactions) are not covered by this source"]
+    },
+    "S2": {
+      "url": "https://sqlite.org/c3ref/wal_checkpoint_v2.html",
+      "type": "official_docs",
+      "authority": "high (canonical SQLite C API reference)",
+      "read_in": "prior session",
+      "limitations": ["C API reference; PRAGMA wal_checkpoint exposes the same tuple (busy, log, checkpointed) per S5, but the C-API framing (pnLog/pnCkpt out-params) is not literally what Python callers see"]
+    },
+    "S3": {
+      "url": "https://github.com/joedougherty/sqlite3_concurrent_writes_test_suite",
+      "type": "repro_test_suite_github",
+      "authority": "medium (small public repo: 22 stars, 3 forks, 20 commits; author's own caveats are candid)",
+      "read_in": "prior session (README)",
+      "limitations": ["No busy_timeout/timeout configuration", "Write-only contention; no reader/writer mix", "No WAL-size or checkpoint observation", "Small scale (ceiling found ~500 simultaneous single-row inserts)", "Tests threads/processes against one DB but not a separate-process RW+RO mix"]
+    },
+    "S4": {
+      "url": "https://raw.githubusercontent.com/necat101/sqlite-deployment-safety-lab/master/README.md",
+      "type": "repro_lab_github",
+      "authority": "medium (README reports validated experiment output; experiments are Python scripts committed in repo; grounded in a real production incident via HN thread #47637353)",
+      "limitations": ["README summarizes results; per-experiment scripts were not individually read this stage", "Experiment 2 note is the author's own: controlled tests show NO data loss without SIGTERM/unhandled-SQLITE_BUSY", "Production-incident generalization comes from one anecdotal incident (Ultrathink.art)"]
+    },
+    "S5": {
+      "url": "https://www.sqliteforum.com/p/checkpoint-algorithms-and-wal-performance",
+      "type": "engineering_writeup_newsletter",
+      "authority": "medium-low (Substack-style explainer 'SQLite Forum' by Jenny Muralidharan, May 2026; technically consistent with S1/S2 but is not sqlite.org)",
+      "limitations": ["Not an official SQLite source despite the domain name", "No measurements of its own; all claims qualitative", "Minor imprecision: says auto-checkpoint 'happens in the background by a reader connection' — S1 states the COMMITTING thread runs it (this source's framing is wrong per S1)"]
+    },
+    "S6": {
+      "url": "https://github.com/mouadja02/skills/blob/main/skills/databases/sqlite-wal-checkpoint-starvation-diagnostics/SKILL.md",
+      "type": "diagnostic_runbook",
+      "authority": "medium (operational runbook; explicitly separates sourced facts from original operational guidance; cites sqlite.org docs and real issue trackers)",
+      "limitations": ["Operational recommendations (alert ratios, sample counts, escalation order) are author-declared 'not SQLite guarantees'", "Issue references (Syncthing #10559, OpenCode #37495, Codex #30517) were not independently opened this stage"]
+    },
+    "S7": {
+      "url": "https://dev.to/odd_background_328/reproduce-sqlite-wal-checkpoint-starvation-with-one-forgotten-reader-4jfo",
+      "type": "engineering_writeup_repro",
+      "authority": "medium-low (individual practitioner post, Jul 2026, with one substantive expert comment; methodology is coherent and cites sqlite.org/wal.html for the end-mark mechanism)",
+      "limitations": ["No raw numbers published; claims are about the drill design, not measured results", "Single author, no peer review"]
+    },
+    "S8": {
+      "url": "https://productionhardening.org/wal-optimization-concurrency-tuning/",
+      "type": "engineering_writeup_reference_site",
+      "authority": "low-medium (anonymous static Eleventy site, no named authors, no verifiable credentials; content is technically coherent and internally consistent with S1, but unattributed)",
+      "limitations": ["Credibility unverified — no author, organization, or provenance for 'validated against SD-card degradation' claims", "Specific numbers (40-60% faster writes with synchronous=NORMAL, 15-30% penalty for FULL, 256MB mmap suggestion) are unattributed and uncorroborated", "Safe to use for mechanism-level claims that echo S1; do NOT cite its benchmark numbers without corroboration"]
+    },
+    "S9": {
+      "url": "https://dev.to/lumin-playstar/sqlite-wal-mode-10x-performance-for-python-apps-4ic",
+      "type": "tutorial_blog_low_authority",
+      "authority": "low (individual tutorial, Mar 2026, 0 comments; headline '10x' claim is unsubstantiated)",
+      "limitations": ["No benchmarks, no methodology, no workload description behind the '10x' figure", "Contains a factual error: claims auto-checkpoint runs 'in the background by a reader connection' — contradicts S1 (committing thread) and S2", "Suggested pattern 'conn.commit() after PRAGMA journal_mode=WAL' is unnecessary/confused", "Code also deletes -wal/-shm files directly in cleanup — flagged unsafe by S6's rules", "Use only as evidence of common developer belief, not as a factual source"]
+    },
+    "S10": {
+      "url": "https://pypi.org/project/pytest-benchmark/ + https://pytest-benchmark.readthedocs.io/en/latest/ (index)",
+      "type": "tooling_docs",
+      "authority": "high (official docs + PyPI page for the canonical pytest benchmarking plugin; v5.3.0, BSD-2-Clause, production/stable)",
+      "limitations": ["Micro-benchmark oriented: 'benchmarks functions and only that'; whole-program or multi-process scenarios need wrapper functions or per-call benchmarking", "Auto-disables under pytest-xdist — concurrency-related caveat for a concurrency test harness", "Docs page read was the index; calibration/comparison detail lives on sub-pages"]
+    },
+    "S11": {
+      "url": "https://stackoverflow.com/questions/393554/python-sqlite3-and-concurrency (fetched via Stack Exchange API, question + top 4 answers)",
+      "type": "qa_forum",
+      "authority": "medium for community practice (Q score 115; top answer 214), low as factual source",
+      "limitations": ["Q&A from 2008-era threading context; predates WAL-era defaults and modern Python sqlite3 behavior", "Community answers, not documentation"]
+    }
+  },
+  "claims": [
+    {
+      "id": "O1",
+      "source": "S1",
+      "claim": "In WAL mode there is exactly ONE writer at a time (single WAL file); readers do not block writers and vice versa, but writer/writer contention remains and SQLITE_BUSY can still occur in WAL mode (exclusive-locking-mode holders, last-connection cleanup, crashed-connection recovery).",
+      "status": "CURRENT",
+      "relevance": "Directly bounds what the issue-262 acceptance test can promise: WAL improves reader/writer concurrency, not writer/writer throughput."
+    },
+    {
+      "id": "O2",
+      "source": "S1",
+      "claim": "Each reader has an 'end mark' (snapshot per read transaction); a checkpoint must stop at any reader's end mark, so a long-running read transaction prevents checkpoint progress and can starve checkpoints, growing the WAL unbounded (§2.2, §6).",
+      "status": "CURRENT",
+      "relevance": "Core failure mode the acceptance test should reproduce: one forgotten reader -> unbounded WAL growth."
+    },
+    {
+      "id": "O3",
+      "source": "S1",
+      "claim": "WAL read performance degrades as the WAL grows; default auto-checkpoint triggers at 1000 pages (~4MB) and runs on the COMMITTING thread, producing mostly-fast commits with occasional much-slower commits (§2.3).",
+      "status": "CURRENT",
+      "relevance": "Gives the acceptance test a measurable tail-latency signal (checkpoint stall on committing thread) and a WAL-size regression metric."
+    },
+    {
+      "id": "O4",
+      "source": "S1",
+      "claim": "WAL mode is PERSISTENT across connections (set once on any connection, §3.3); mitigations for checkpoint starvation are reader gaps or manual RESTART/TRUNCATE checkpoints (with reader-blocking downside); WAL has constraints: same-host only (shared-memory wal-index), not for network filesystems, and transactions >~100MB are a poor fit.",
+      "status": "CURRENT",
+      "relevance": "task_gate.py:41-44 setting journal_mode=WAL once is sufficient for all processes on the same host; validates repo topology, bounds test scope (multi-process same-host only)."
+    },
+    {
+      "id": "O5",
+      "source": "S1",
+      "claim": "WAL-reset data-race bug affected SQLite 3.7.0-3.51.2 (fixed 3.51.3, 2026-03-13; backports 3.44.6/3.50.7); requires >=2 connections in separate threads/processes writing/checkpointing at the same instant.",
+      "status": "CURRENT",
+      "relevance": "Rune's shape (multi-process writers + checkpoints) matches the bug's preconditions; acceptance test / recommendation should pin a minimum SQLite version."
+    },
+    {
+      "id": "O6",
+      "source": "S2",
+      "claim": "Checkpoint modes: PASSIVE (default; never blocks, may finish incomplete), FULL (blocks until all readers on newest snapshot; blocks new writers), RESTART (FULL + next writer restarts WAL), TRUNCATE (RESTART + WAL to 0 bytes); all checkpoints take an exclusive checkpoint lock so a concurrent checkpoint from another process returns SQLITE_BUSY without invoking the busy-handler; the (busy, log, checkpointed) tuple reports frames.",
+      "status": "CURRENT",
+      "relevance": "PRAGMA wal_checkpoint(PASSIVE) is the non-blocking observation primitive the acceptance test can use to assert checkpoint progress/WAL health."
+    },
+    {
+      "id": "O7",
+      "source": "S3",
+      "claim": "Closest public prior-art acceptance harness: pytest + multiprocessing.Pool spawning N single-row-insert processes against one sqlite3 DB; failures surface as sqlite3.OperationalError 'database is locked', starting around 500 simultaneous inserts (default journal mode, no busy_timeout).",
+      "status": "CURRENT",
+      "relevance": "Structural template for the issue-262 test (pytest + multiprocessing + row-count assertion + lock-error detection)."
+    },
+    {
+      "id": "O8",
+      "source": "S3",
+      "claim": "Author's key finding: 'WAL mode mostly helps with concurrent reads. My testing showed I wasn't able to successfully insert more rows in parallel using WAL mode than without.' — WAL did not raise the concurrent-WRITE ceiling in that harness.",
+      "status": "CURRENT",
+      "relevance": "Corroborates O1 empirically; the acceptance test must NOT assert that WAL increases multi-writer throughput; differentiate on reader/writer mix instead."
+    },
+    {
+      "id": "O9",
+      "source": "S4",
+      "claim": "Production incident (Ultrathink.art, via HN #47637353): 3 containers on a shared Docker volume accessed the same SQLite WAL DB; 2 orders lost after 11 overlapping Kamal deploys. Community consensus in thread: WAL allows concurrent readers but NOT concurrent writers; overlapping deploys + SIGTERM mid-transaction or unhandled SQLITE_BUSY cause real data loss; raw `cp` of a live DB can corrupt backups (use .backup API); deploy serialization is mandatory.",
+      "status": "CURRENT",
+      "relevance": "Failure-mode inventory for the acceptance test: multi-process writers on one DB, unhandled SQLITE_BUSY, SIGTERM mid-transaction."
+    },
+    {
+      "id": "O10",
+      "source": "S4",
+      "claim": "Lab experiments (validated): Experiment 1 — 5 concurrent writer processes, 3 succeeded / 2 failed with lost writes, proving single-writer even in WAL; Experiment 2 — controlled overlapping processes show SQLite properly serializes writes and NO data is lost unless SIGTERM mid-transaction or unhandled SQLITE_BUSY; Experiment 3 — long-running readers block checkpoints and grow the WAL; Experiment 5 — busy_timeout 5000 makes writers wait up to 5s then fail with SQLITE_BUSY.",
+      "status": "CURRENT",
+      "relevance": "Executable repro patterns the acceptance test can adapt (esp. Exp 3 checkpoint-blocking and Exp 5 busy-timeout semantics)."
+    },
+    {
+      "id": "O11",
+      "source": "S5, S6",
+      "claim": "Checkpoint mode semantics for practitioners: PASSIVE copies what it can without blocking (busy column always 0 — never mistake PASSIVE busy=0 for completion); FULL/RESTART/TRUNCATE guarantee completion but can block readers/writers; wal_autocheckpoint is a trigger threshold, not a guarantee that readers permit completion; production tuning commonly raises wal_autocheckpoint to 2000-10000 pages and schedules manual FULL checkpoints in low-traffic windows.",
+      "status": "CURRENT",
+      "relevance": "Directly informs both the acceptance-test assertions and any recommendation output (checkpoint cadence tuning for Rune)."
+    },
+    {
+      "id": "O12",
+      "source": "S6, S7",
+      "claim": "Diagnostics pattern: sample PRAGMA wal_checkpoint(PASSIVE) tuple + WAL bytes + oldest-reader transaction age over time; a health check ('SELECT 1' green) says nothing about checkpoint progress; fix reader lifetimes (close iterators, bound transaction age) rather than looping aggressive TRUNCATE checkpoints; alert thresholds should be tied to disk budget/growth rate.",
+      "status": "CURRENT",
+      "relevance": "The acceptance test can double as an operational diagnostic: assert checkpoint progress resumes within a deadline after the stale reader is released (exactly S6's prescribed regression test)."
+    },
+    {
+      "id": "O13",
+      "source": "S7",
+      "claim": "Minimal starvation repro drill: connection A holds an open read transaction; connection B commits batches of writes for 60s; sample WAL bytes and checkpoint results every second; release A and observe checkpoint resume + WAL convergence. Gate form: Given one reader holds its transaction / When 10,000 writes commit / Then writes remain bounded, WAL growth alerts before disk budget / When reader closes / Then checkpoint progress resumes and WAL size converges.",
+      "status": "CURRENT",
+      "relevance": "Ready-made Given/When/Then skeleton for the issue-262 acceptance test."
+    },
+    {
+      "id": "O14",
+      "source": "S8",
+      "claim": "Hardened connection pattern (echoes official PRAGMA docs): set PRAGMA stack on EVERY connection open (journal_mode=WAL, synchronous=NORMAL, busy_timeout, wal_autocheckpoint, cache_size, temp_store), read back and assert each value ('apply then assert'); use isolation_level=None + explicit BEGIN IMMEDIATE to acquire the write lock up front so contention fails fast and cleanly; wrap writers in retry with backoff.",
+      "status": "CURRENT",
+      "relevance": "Maps to Rune's per-call fresh-connection pattern (warm_router.py:76-935, curator.py): every connection must re-apply busy_timeout etc.; sqlite-vec per-connection load sits in the same setup path. Mechanism-level claims credible; specific numbers unverified."
+    },
+    {
+      "id": "O15",
+      "source": "S8",
+      "claim": "Claimed failure-code matrix for WAL deployments: SQLITE_BUSY (writer-lock contention / blocked checkpoint), SQLITE_FULL (WAL exhausted disk), SQLITE_PROTOCOL (-shm contention across too many processes / stale lock), SQLITE_READONLY (directory not writable — WAL needs to create -wal/-shm siblings), SQLITE_IOERR / SQLITE_CORRUPT (storage failure; power loss during checkpoint on reordering storage).",
+      "status": "PARTIALLY_VERIFIED",
+      "relevance": "Failure modes worth encoding in the acceptance test (esp. SQLITE_BUSY residual cases, directory-writability precondition); provenance is an anonymous site — mechanism claims echo S1 but the matrix as a whole needs corroboration in ADVERSARIAL stage."
+    },
+    {
+      "id": "O16",
+      "source": "S9",
+      "claim": "Common developer belief: enabling WAL yields '10x or even greater performance boost' for Python apps, especially writes and concurrent operations.",
+      "status": "REFUTED_CONTEXT",
+      "relevance": "The '10x' claim is unsubstantiated in-source (no benchmark/methodology), contains a factual error about auto-checkpoint running on a reader connection (contradicts S1: committing thread), and is empirically contradicted for concurrent WRITES by O8 (S3). Useful only as evidence that the acceptance test should measure, not assume, WAL gains."
+    },
+    {
+      "id": "O17",
+      "source": "S10",
+      "claim": "pytest-benchmark provides a pytest fixture benchmarking any callable, with automatic calibration, comparison/regression tracking (--benchmark-compare, --benchmark-compare-fail), statistics, and JSON export; pedantic mode allows explicit rounds/iterations/setup. Caveats: benchmarks functions only (wrap code blocks), one function per test, and it auto-disables under pytest-xdist.",
+      "status": "CURRENT",
+      "relevance": "Candidate harness for the acceptance test's performance assertions (per-call connection+sqlite-vec load cost, commit latency percentiles), with regression tracking."
+    },
+    {
+      "id": "O18",
+      "source": "S11",
+      "claim": "Canonical Python-side concurrency answers: (a) per-thread connections hit 'database is locked' without WAL/busy_timeout; (b) passing a connection across threads raises ProgrammingError unless check_same_thread=False (then the app owns thread-safety); (c) recommended architectures are a single dedicated DB-writer thread fed by a queue (accepted answer), multiprocessing, or a pooling layer (SQLAlchemy).",
+      "status": "CURRENT",
+      "relevance": "Community-standard Python patterns; contrasts with Rune's multi-PROCESS per-call-connection topology, which none of these answers address — supporting the repo-specific gap the acceptance test targets."
+    },
+    {
+      "id": "O19",
+      "source": "S5, S9",
+      "claim": "Both secondary sources repeat the incorrect claim that automatic checkpoints run 'in the background by a reader connection'.",
+      "status": "REFUTED",
+      "relevance": "Conflict resolved in favor of S1 (§2.3: the COMMITTING thread runs auto-checkpoints). Recorded so the ADVERSARIAL stage does not inherit the error via secondary sources."
+    }
+  ],
+  "mapping_to_repo": {
+    "I1_rune_tui": "rune_tui.py:189 sniffs 'sqlite'/'OperationalError' in error messages — O1's residual-SQLITE_BUSY-in-WAL cases are what the TUI will surface; test should assert lock errors are user-visible/typed.",
+    "I2_warm_router": "warm_router.py:76-935 opens fresh per-call connections mixing RW and file:...?mode=ro — O1 (single writer, readers never block), O14 (PRAGMA stack per connection), O2/O3 (readers hold end marks; per-call RO connections are short so starvation risk is from leaked/long iterators, not the per-call pattern itself).",
+    "I3_curator": "curator.py:132-260 RO URI connections + RW connect — same mapping as I2; per-connect sqlite-vec load cost (curator.py:695 comment) is the performance axis S10/pytest-benchmark (O17) can measure.",
+    "I4_auto_tasks": "auto_tasks.py background jobs = the 'other processes' in O5's data-race precondition and O9's overlapping-writer scenario; candidates for the multi-process writer pool in the acceptance test.",
+    "I5_memory_store": "memory_store.py (sqlite-vec + FTS5 per connection) — per-connection extension load is connection-setup overhead to benchmark alongside WAL behavior (O17)."
+  },
+  "limitations_of_stage": [
+    "Sources S1-S3 were read in a prior partially-completed OUTWARD_READING session and carried forward via that session's checkpoint (claims re-verified against the extraction text, not re-fetched).",
+    "stackoverflow.com returned 403 to direct webfetch; question 393554 and top answers were retrieved via the official Stack Exchange API instead (full question + top 4 by score read).",
+    "Secondary/low-priority discovery URLs not read (deliberately, scope control): charlesleifer.com post, theconsensus.dev WAL-reset reproducer, bencher.dev guide, syncthing forum thread, errcodes.dev, sqlfmt.app, coddy.tech, botmonster.com, deepwiki better-sqlite3, nitin-rachabathuni.com posts, acaciafund.org. All are corroboration candidates, none are load-bearing.",
+    "S4's per-experiment Python scripts and S3's test files were not individually opened; README/claims-level reading only.",
+    "S8 (productionhardening.org) credibility remains unverified (anonymous site); its quantitative claims are quarantined in O15 and flagged for ADVERSARIAL.",
+    "No measurements were run this stage — this is a reading/extraction stage; all performance numbers cited come from sources, and the only external quantitative datapoint (S3's ~500-writer ceiling) is single-harness, single-machine."
+  ],
+  "next_stage_hint": "ADVERSARIAL: strongest attack surfaces are (a) S8's unverified numbers, (b) S3's small-scale single-harness WAL-write finding vs O1's doc-level claim, (c) whether pytest-benchmark's micro-benchmark model fits a multi-process acceptance test at all (xdist auto-disable), (d) S9's 10x claim should be killed or corroborated by measurement in INNOVATION."
+}
@@ -0,0 +1,76 @@
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+{"type":"text","timestamp":1788905411241,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a08312525b001kms07wLCB","messageID":"msg_g001a0831204b30015PYufGjDD","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","type":"text","text":"I'll start with the required skill search, and in parallel check session memory for prior context on this research process.","time":{"start":1788905411163,"end":1788905411239}}}
+{"type":"tool_use","timestamp":1788905411244,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"type":"tool","tool":"skill_search","callID":"call_61a89ba9088243caab59ec7e","state":{"status":"completed","input":{"query":"Adversarial research stage: seek evidence against a preferred technical approach (SQLite WAL for concurrency in Python), find failures, limitations, negative results, and simpler alternatives; deliverable is a structured adversarial.json stage artifact."},"output":"{\n  \"status\": \"matched\",\n  \"results\": [\n    {\n      \"skill_id\": \"xlsx-official\",\n      \"name\": \"xlsx-official\",\n      \"score\": 0.6173,\n      \"reason\": \"The skill description matches these query terms: in, python, deliverable, is, artifact.\"\n    },\n    {\n      \"skill_id\": \"firecrawl-search\",\n      \"name\": \"firecrawl-search\",\n      \"score\": 0.5646,\n      \"reason\": \"The skill description matches these query terms: research, in, find, result.\"\n    },\n    {\n      \"skill_id\": \"firecrawl-agent\",\n      \"name\": \"firecrawl-agent\",\n      \"score\": 0.4243,\n      \"reason\": \"The skill description matches these query terms: structured, json.\"\n    }\n  ],\n  \"loaded_skill_id\": null\n}","metadata":{"status":"matched","loadedSkillID":null,"truncated":false},"title":"Found 3 skills","time":{"start":1788905411240,"end":1788905411243}},"id":"prt_g001a083125262001hMmJSflZD","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","messageID":"msg_g001a0831204b30015PYufGjDD"}}
+{"type":"tool_use","timestamp":1788905411515,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"type":"tool","tool":"memory","callID":"call_bfd0efbefebd4c32b3db47cb","state":{"status":"completed","input":{"operation":"search","query":"research 262 sqlite wal adversarial"},"output":"Found 10 matches (BM25-ranked, best first).\nA hit here is authoritative — use it even if a parallel/sibling query returned nothing.\nIf you need the FULL body (snippets are truncated), Read the path.\nIf you need an EXACT literal (a connection string, port, token, full command line, path) and the snippet/body only paraphrases or partially shows it, the curated memory may have dropped the precise form — query the history tool for the original message, which holds it verbatim.\n\n### /home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5f7cf348c4ffeSAHmubYWN/checkpoint.md\nScope: sessions/ses_-ffe5f7cf348c4ffeSAHmubYWN, Type: checkpoint, Score: 19.753\n...Mention specific file paths and code locations._\n\nExecuting OUTWARD_READING for <<research>>-<<262>>-r1 (issue <<262>>: <<SQLite>> <<WAL>> performance under concurrency in Python apps; acceptance-test question). Source-ID scheme: S1=<<sqlite>>...\n\n### /home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5f7d08ef0effe7822prgaw/checkpoint.md\nScope: sessions/ses_-ffe5f7d08ef0effe7822prgaw, Type: checkpoint, Score: 18.352\n...Mention specific file paths and code locations._\n\nExecuting OUTWARD_READING for <<research>>-<<262>>-r1 (issue <<262>>: <<SQLite>> <<WAL>> performance under concurrency in Python apps; acceptance-test question). Progress so far:\n\n1. Recovered...\n\n### /home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5f7d1024a3ffe5J13LEwLr/checkpoint.md\nScope: sessions/ses_-ffe5f7d1024a3ffe5J13LEwLr, Type: checkpoint, Score: 17.112\n...OUTWARD_DISCOVERY stage for issue <<262>> (<<research>>-<<262>>-r1, <<SQLite>> <<WAL>> performance in concurrent Python apps) — repo grounding + 4 discovery searches done, URL inventory captured, outward_discovery.json artifact pending\n\n# Session checkpoint...\n\n### /home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5f7cf348c4ffeSAHmubYWN/checkpoint-outward-reading-sources.md\nScope: sessions/ses_-ffe5f7cf348c4ffeSAHmubYWN, Type: checkpoint, Score: 15.062\n# OUTWARD_READING source extraction — <<research>>-<<262>>-r1 (issue <<262>>)\n\nClaim extractions from primary-source reads, full detail. Source IDs follow the scheme established in §10 (S1=<<sqlite>>.org/<<wal>>.html, S2=<<sqlite>>...\n\n### /home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5f7cf348c4ffeSAHmubYWN/checkpoint-outward-reading-open-notes.md\nScope: sessions/ses_-ffe5f7cf348c4ffeSAHmubYWN, Type: checkpoint, Score: 14.808\n# §11 Open notes spillover — carried-forward items (<<research>>-<<262>>-r1)\n\nExtracted from checkpoint.md §11 at budget-trim; these are historical/carried-forward notes, not current blockers.\n\n- Corroboration candidate (NOT in discovery...\n\n### /home/nick/.local/share/mimocode/memory/projects/add96ab3-25dd-4c38-9fa3-34c01811d081/MEMORY.md\nScope: projects/add96ab3-25dd-4c38-9fa3-34c01811d081, Type: memory, Score: 12.100\n...sources.md`) with S-numbered source IDs so the <<ADVERSARIAL>> stage can reference claims.\n- Rune's <<SQLite>> usage (grounding for DB-related <<research>> questions): ~15 modules in src/rune/ each open fresh...\n\n### /home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5fc20c77acffeZPFtNS5gw/tasks/T4.7/progress.md\nScope: sessions/ses_-ffe5fc20c77acffeZPFtNS5gw, Type: progress, Score: 9.061\n...Added per-canonical-database-path <<WAL>> activation locks, deadline-bounded retry with exponential backoff for <<SQLite>> `BUSY`/`LOCKED` only, requested busy-timeout restoration, and cleanup of partially initialized connections on failure.\n- tests...\n\n### /home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5fc20c77acffeZPFtNS5gw/tasks/T4.6/progress.md\nScope: sessions/ses_-ffe5fc20c77acffeZPFtNS5gw, Type: progress, Score: 7.769\n...Fixed conversation-store paging and <<SQLite>> initialization, migration, and channel-creation concurrency.\n\n## §2 Subagent intent\nThis subagent was asked to address four code-quality findings in the Rune conversation store using strict...\n\n### /home/nick/.local/share/mimocode/memory/projects/global/MEMORY-rules-shipped-2026-09-07.md\nScope: projects/global, Type: memory, Score: 7.461\n...Nick: \"lets follow the order\" after the pipeline report) — ALL FIVE EXECUTED:** #151 structuralized (docs/<<adversarial>>-review.md + dispatch template + henxel) → #157 fixture pipeline (capture/redact/manifest/tamper-evidence; seed = #192 defect...\n\n### /home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5f84d8cf57ffeeV370GauT/checkpoint.md\nScope: sessions/ses_-ffe5f84d8cf57ffeeV370GauT, Type: checkpoint, Score: 7.047\n...one-time <<research>>-pending sweep + <<research>> round as dispatched headless stage (spec-gate pattern).\n- **IMPROVEMLine truncated
+{"type":"step_finish","timestamp":1788905411799,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a0831253bb0011k7AJ70AH","reason":"tool-calls","snapshot":"231173cce75546e05700e8dad40ba9737f6c29a2","messageID":"msg_g001a0831204b30015PYufGjDD","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","type":"step-finish","tokens":{"total":29826,"input":29079,"output":100,"reasoning":583,"cache":{"write":0,"read":64}},"cost":0}}
+{"type":"step_start","timestamp":1788905424789,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a0831287920017f6DVvqCk","messageID":"msg_g001a083125729001OQQb1KdLL","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","snapshot":"54125433a878edda9be92c7e9554d166f950138b","type":"step-start"}}
+{"type":"text","timestamp":1788905425731,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a08312883a001XFhKsxPyC","messageID":"msg_g001a083125729001OQQb1KdLL","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","type":"text","text":"No skill match — continuing without one. Let me locate the prior stage artifacts on disk (DEFINE/OUTWARD_DISCOVERY/OUTWARD_READING) so I can attack the preferred approach with specifics.","time":{"start":1788905424954,"end":1788905425729}}}
+{"type":"tool_use","timestamp":1788905425800,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"type":"tool","tool":"read","callID":"call_8762659ad5bf4210ae4d2563","state":{"status":"completed","input":{"file_path":"/home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5f7cf348c4ffeSAHmubYWN/checkpoint-outward-reading-sources.md"},"output":"<path>/home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5f7cf348c4ffeSAHmubYWN/checkpoint-outward-reading-sources.md</path>\n<type>file</type>\n<content>\n1: # OUTWARD_READING source extraction — research-262-r1 (issue 262)\n2: \n3: Claim extractions from primary-source reads, full detail. Source IDs follow the scheme established in §10 (S1=sqlite.org/wal.html, S2=sqlite.org/c3ref/wal_checkpoint_v2.html, S3=github.com/joedougherty/sqlite3_concurrent_writes_test_suite — read in prior session ses_-ffe5f7d08ef0effe7822prgaw).\n4: \n5: ## S4 — github.com/necat101/sqlite-deployment-safety-lab (repro lab; HN #47637353)\n6: \n7: - Incident (via HN thread summary): Ultrathink.art lost 2 orders after 11 pushes in 2 hours with overlapping Kamal deploys; 3 containers simultaneously accessed the same SQLite WAL file on a shared Docker volume; orders 16–17 succeeded in Stripe but never reached the DB.\n8: - Experiment 1 (validated with output shown): even in WAL mode only ONE writer at a time; 5 concurrent writers → 3 succeeded, 2 failed with SQLITE_BUSY, 2 lost writes.\n9: - Experiment 2: in controlled tests SQLite serializes overlapping-deploy writes correctly with no loss; real data loss occurs when processes are SIGTERM'd mid-transaction or the app doesn't handle SQLITE_BUSY.\n10: - Experiment 3: long-running readers block checkpoints → WAL file grows.\n11: - Experiment 4: `cp` of a live DB can produce corrupt backups; use `sqlite3 db \".backup backup.db\"` / backup API.\n12: - Experiment 5: `timeout: 5000` → writers wait up to 5 s, then fail with SQLITE_BUSY; app must retry or handle the error.\n13: - Operational takeaways: deploy serialization is mandatory (e.g. GH Actions `concurrency` group); monitor WAL size; handle SQLITE_BUSY.\n14: - LIMITATIONS: single-author repro lab; README states Experiment 1 \"fully validated\" but Experiments 2–5 only \"validated locally — run them to see results\" (no per-run output for 2–5 in README); incident attribution (lost orders ↔ SQLite) is contested in the HN thread itself (\"operational failure, not SQLite failure\"); small scale.\n15: \n16: ## S5 — dev.to/odd_background_328 \"Reproduce SQLite WAL Checkpoint Starvation With One Forgotten Reader\" (posted Jul 20)\n17: \n18: - Claim: a SQLite service can keep answering health checks while its WAL grows without a successful checkpoint; ONE forgotten open read transaction suffices.\n19: - Drill: enable WAL; connection A opens a read transaction and holds it; connection B commits 10,000 writes over 60 s; sample WAL bytes + `PRAGMA wal_checkpoint(PASSIVE)` counters every second; release A and observe recovery.\n20: - Gate (Given/When/Then): reader holds txn → 10k writes → writes remain bounded, WAL-growth alert fires before disk budget; reader closes → checkpoint progress resumes and WAL converges.\n21: - Key quote: \"A green SELECT 1 says nothing about checkpoint progress.\"\n22: - Guidance: do NOT start with an automatic TRUNCATE loop (busy result is evidence of contention; aggressive checkpoints add latency); fix reader lifecycle (close iterators, max transaction age); tie alert thresholds to disk budget, not arbitrary file size.\n23: - Commenter (Mads Hansen) adds: track reader snapshot end-marks and WAL-growth-vs-free-disk runway as an SLO pair (max reader txn age + min runway); verify recovery under continued writes, not just idle; test exception/cancellation paths so abandoned iterators release their txn.\n24: - LIMITATIONS: blog post; no linked runnable repo; anecdotal + commenter-augmented; mirrors S1 §6 semantics rather than adding new measurements.\n25: \n26: ## S6 — sqliteforum.com/p/checkpoint-algorithms-and-wal-performance (\"Checkpoint Algorithms and WAL Performance Tuning\", Jenny Muralidharan, May 12, 2026)\n27: \n28: - Checkpoint = copying committed WAL frames into the main DB file (vs commit = visibility only).\n29: - Default auto-checkpoint: `PRAGMA wal_autocheckpoint = 1000` (pages).\n30: - Mode recap (consistent with S2): PASSIVE copies what it can, never blocks, incomplete common under read load; FULL waits for readers, more complete, higher latency; RESTART = FULL + resets WAL so new writes start over (file may stay allocated); TRUNCATE = RESTART + truncates WAL to 0 bytes (most expensive; maintenance windows).\n31: - Core trade-off: WAL writes are sequential appends; checkpointing reintroduces random I/O + sync overhead; write amplification (same logical update written to WAL AND DB file), noticeable on HDD/cloud storage.\n32: - Frequent-small vs large-infrequent checkpoints: frequent → smaller WAL, lower recovery overheLine truncated
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+{"type":"tool_use","timestamp":1788905425888,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"type":"tool","tool":"glob","callID":"call_9f9772631d3c4cba98c2bcce","state":{"status":"completed","input":{"pattern":"**/*outward*"},"output":"/mnt/workdrive/research-stage/research/issue-262/outward_reading.json\n/mnt/workdrive/research-stage/prompts/research-stages/outward_discovery.md\n/mnt/workdrive/research-stage/prompts/research-stages/outward_reading.md","metadata":{"count":3,"truncated":false},"title":"","time":{"start":1788905425730,"end":1788905425884}},"id":"prt_g001a083128844001CqbkeAumx","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","messageID":"msg_g001a083125729001OQQb1KdLL"}}
+{"type":"step_finish","timestamp":1788905426105,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a083128bdf001uSozyMfAo","reason":"tool-calls","snapshot":"16750ea667beb69726ef59eb1f8dafc959f02afc","messageID":"msg_g001a083125729001OQQb1KdLL","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","type":"step-finish","tokens":{"total":31019,"input":30832,"output":187,"reasoning":0,"cache":{"write":0,"read":0}},"cost":0}}
+{"type":"step_start","timestamp":1788905435116,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a08312afea001o17bpZXsx","messageID":"msg_g001a083128dd50011YlggGrYk","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","snapshot":"1753f57afdcc15d172bbc5f3f5022c10a46632d4","type":"step-start"}}
+{"type":"tool_use","timestamp":1788905436685,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"type":"tool","tool":"read","callID":"call_60a03cd51b864728bdfac3eb","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/research-stage/research/issue-262/outward_reading.json"},"output":"<path>/mnt/workdrive/research-stage/research/issue-262/outward_reading.json</path>\n<type>file</type>\n<content>\n1: {\n2:   \"process_id\": \"research-262-r1\",\n3:   \"issue\": 262,\n4:   \"round\": 1,\n5:   \"stage\": \"OUTWARD_READING\",\n6:   \"title\": \"sqlite WAL performance in concurrent Python applications (acceptance-test question, repo-specific)\",\n7:   \"method_note\": \"Primary sources fetched and read in full this stage plus in the prior partially-completed OUTWARD_READING session (ses_-ffe5f7d08ef0effe7822prgaw, which read S1-S3). No new search queries generated, per stage contract. Claims below carry source IDs (S1-S10); repo claims from INWARD (I1-I5) are referenced for mapping only.\",\n8:   \"sources\": {\n9:     \"S1\": {\n10:       \"url\": \"https://sqlite.org/wal.html\",\n11:       \"type\": \"official_docs\",\n12:       \"authority\": \"high (canonical SQLite documentation)\",\n13:       \"read_in\": \"prior session (ses_-ffe5f7d08ef0effe7822prgaw); claims verified against that session's extraction\",\n14:       \"limitations\": [\"Documents C-library behavior; Python sqlite3 module wraps the same library so semantics carry over, but Python-side ergonomics (isolation_level, implicit transactions) are not covered by this source\"]\n15:     },\n16:     \"S2\": {\n17:       \"url\": \"https://sqlite.org/c3ref/wal_checkpoint_v2.html\",\n18:       \"type\": \"official_docs\",\n19:       \"authority\": \"high (canonical SQLite C API reference)\",\n20:       \"read_in\": \"prior session\",\n21:       \"limitations\": [\"C API reference; PRAGMA wal_checkpoint exposes the same tuple (busy, log, checkpointed) per S5, but the C-API framing (pnLog/pnCkpt out-params) is not literally what Python callers see\"]\n22:     },\n23:     \"S3\": {\n24:       \"url\": \"https://github.com/joedougherty/sqlite3_concurrent_writes_test_suite\",\n25:       \"type\": \"repro_test_suite_github\",\n26:       \"authority\": \"medium (small public repo: 22 stars, 3 forks, 20 commits; author's own caveats are candid)\",\n27:       \"read_in\": \"prior session (README)\",\n28:       \"limitations\": [\"No busy_timeout/timeout configuration\", \"Write-only contention; no reader/writer mix\", \"No WAL-size or checkpoint observation\", \"Small scale (ceiling found ~500 simultaneous single-row inserts)\", \"Tests threads/processes against one DB but not a separate-process RW+RO mix\"]\n29:     },\n30:     \"S4\": {\n31:       \"url\": \"https://raw.githubusercontent.com/necat101/sqlite-deployment-safety-lab/master/README.md\",\n32:       \"type\": \"repro_lab_github\",\n33:       \"authority\": \"medium (README reports validated experiment output; experiments are Python scripts committed in repo; grounded in a real production incident via HN thread #47637353)\",\n34:       \"limitations\": [\"README summarizes results; per-experiment scripts were not individually read this stage\", \"Experiment 2 note is the author's own: controlled tests show NO data loss without SIGTERM/unhandled-SQLITE_BUSY\", \"Production-incident generalization comes from one anecdotal incident (Ultrathink.art)\"]\n35:     },\n36:     \"S5\": {\n37:       \"url\": \"https://www.sqliteforum.com/p/checkpoint-algorithms-and-wal-performance\",\n38:       \"type\": \"engineering_writeup_newsletter\",\n39:       \"authority\": \"medium-low (Substack-style explainer 'SQLite Forum' by Jenny Muralidharan, May 2026; technically consistent with S1/S2 but is not sqlite.org)\",\n40:       \"limitations\": [\"Not an official SQLite source despite the domain name\", \"No measurements of its own; all claims qualitative\", \"Minor imprecision: says auto-checkpoint 'happens in the background by a reader connection' — S1 states the COMMITTING thread runs it (this source's framing is wrong per S1)\"]\n41:     },\n42:     \"S6\": {\n43:       \"url\": \"https://github.com/mouadja02/skills/blob/main/skills/databases/sqlite-wal-checkpoint-starvation-diagnostics/SKILL.md\",\n44:       \"type\": \"diagnostic_runbook\",\n45:       \"authority\": \"medium (operational runbook; explicitly separates sourced facts from original operational guidance; cites sqlite.org docs and real issue trackers)\",\n46:       \"limitations\": [\"Operational recommendations (alert ratios, sample counts, escalation order) are author-declared 'not SQLite guarantees'\", \"Issue references (Syncthing #10559, OpenCode #37495, Codex #30517) were not independently opened this stage\"]\n47:     },\n48:     \"S7\": {\n49:       \"url\": \"https://dev.to/odd_background_328/reproduce-sqlite-wal-checkpoint-starvation-with-one-forgotten-reader-4jfo\",\n50:       \"type\": \"engineering_writeup_repro\",\n51: Line truncated
+{"type":"tool_use","timestamp":1788905436749,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"type":"tool","tool":"bash","callID":"call_b04a8064f5644683aa503748","state":{"status":"completed","input":{"command":"ls -la /mnt/workdrive/research-stage/research/issue-262/ 2>/dev/null; ls /mnt/workdrive/research-stage/research/ 2>/dev/null","description":"List research stage artifacts for issue 262"},"output":"total 56\ndrwxr-xr-x  3 nick nick  4096 Sep  8 23:07 .\ndrwxr-xr-x 21 nick nick  4096 Sep  8 22:32 ..\n-rw-r--r--  1 nick nick 21893 Sep  8 23:07 outward_reading.json\ndrwxr-xr-x  2 nick nick  4096 Sep  8 23:09 runs\n-rw-r--r--  1 nick nick 20013 Sep  8 23:09 task_tree.json\nbatch-processing\nbuild-mode\ncontract-testing\nfull-audit\ninterstitial-tools\nissue-245-research.md\nissue-260\nissue-261\nissue-262\nllm-craft-api\nllm-craft-deep\nquality-tools\nresearch-methodology\nrune-efficiency\nsafety-override\ntextual-craft\ntool-calling\nuncensored-models\nv1\nworkflow-audit\n","metadata":{"output":"total 56\ndrwxr-xr-x  3 nick nick  4096 Sep  8 23:07 .\ndrwxr-xr-x 21 nick nick  4096 Sep  8 22:32 ..\n-rw-r--r--  1 nick nick 21893 Sep  8 23:07 outward_reading.json\ndrwxr-xr-x  2 nick nick  4096 Sep  8 23:09 runs\n-rw-r--r--  1 nick nick 20013 Sep  8 23:09 task_tree.json\nbatch-processing\nbuild-mode\ncontract-testing\nfull-audit\ninterstitial-tools\nissue-245-research.md\nissue-260\nissue-261\nissue-262\nllm-craft-api\nllm-craft-deep\nquality-tools\nresearch-methodology\nrune-efficiency\nsafety-override\ntextual-craft\ntool-calling\nuncensored-models\nv1\nworkflow-audit\n","exit":0,"description":"List research stage artifacts for issue 262","truncated":false},"title":"List research stage artifacts for issue 262","time":{"start":1788905436745,"end":1788905436748}},"id":"prt_g001a08312b2a6001BzfLCmLae","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","messageID":"msg_g001a083128dd50011YlggGrYk"}}
+{"type":"step_finish","timestamp":1788905436774,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a08312b64d0010NqXuz5Fy","reason":"tool-calls","snapshot":"ec9a1d809e9f4694e6953ec527a89f34ca2bfe5b","messageID":"msg_g001a083128dd50011YlggGrYk","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","type":"step-finish","tokens":{"total":32868,"input":15177,"output":91,"reasoning":0,"cache":{"write":0,"read":17600}},"cost":0}}
+{"type":"step_start","timestamp":1788905444954,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a08312d658001PkctVco75","messageID":"msg_g001a08312b686001Zcu2O7F2A","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","snapshot":"af0a7f0e354a4cc806267fc39e4b2944ac87f2fc","type":"step-start"}}
+{"type":"text","timestamp":1788905446196,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a08312d6ee0029Yb6JFlLm","messageID":"msg_g001a08312b686001Zcu2O7F2A","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","type":"text","text":"I have the OUTWARD_READING artifact. Now let me check the adversarial stage prompt (for the expected artifact format) and the runs/task_tree for the current preferred approach.","time":{"start":1788905445102,"end":1788905446193}}}
+{"type":"tool_use","timestamp":1788905446204,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"type":"tool","tool":"bash","callID":"call_91b6f2162f1e417a8da79ba4","state":{"status":"completed","input":{"command":"ls /mnt/workdrive/research-stage/research/issue-262/runs/ /mnt/workdrive/research-stage/prompts/research-stages/ 2>/dev/null","description":"List runs and stage prompts"},"output":"/mnt/workdrive/research-stage/prompts/research-stages/:\nadversarial.md\ndefine.md\ninnovation.md\ninward.md\noutward_discovery.md\noutward_reading.md\nqualify.md\nsynthesis.md\n\n/mnt/workdrive/research-stage/research/issue-262/runs/:\nstage_ADVERSARIAL.events.jsonl\nstage_ADVERSARIAL.mimo.err.log\nstage_OUTWARD_DISCOVERY.events.jsonl\nstage_OUTWARD_DISCOVERY.mimo.err.log\nstage_OUTWARD_READING.events.jsonl\nstage_OUTWARD_READING.mimo.err.log\n","metadata":{"output":"/mnt/workdrive/research-stage/prompts/research-stages/:\nadversarial.md\ndefine.md\ninnovation.md\ninward.md\noutward_discovery.md\noutward_reading.md\nqualify.md\nsynthesis.md\n\n/mnt/workdrive/research-stage/research/issue-262/runs/:\nstage_ADVERSARIAL.events.jsonl\nstage_ADVERSARIAL.mimo.err.log\nstage_OUTWARD_DISCOVERY.events.jsonl\nstage_OUTWARD_DISCOVERY.mimo.err.log\nstage_OUTWARD_READING.events.jsonl\nstage_OUTWARD_READING.mimo.err.log\n","exit":0,"description":"List runs and stage prompts","truncated":false},"title":"List runs and stage prompts","time":{"start":1788905446201,"end":1788905446204}},"id":"prt_g001a08312d705001AKpK6LhD5","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","messageID":"msg_g001a08312b686001Zcu2O7F2A"}}
+{"type":"tool_use","timestamp":1788905446210,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"type":"tool","tool":"grep","callID":"call_9ca5a9bba0aa46b98563e488","state":{"status":"completed","input":{"path":"/mnt/workdrive/research-stage/research/issue-262/task_tree.json","pattern":"preferred|approach|recommendation"},"output":"No files found","metadata":{"matches":0,"truncated":false},"title":"preferred|approach|recommendation","time":{"start":1788905446196,"end":1788905446208}},"id":"prt_g001a08312d8f8001gASGIBhXk","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","messageID":"msg_g001a08312b686001Zcu2O7F2A"}}
+{"type":"step_finish","timestamp":1788905446240,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a08312db41001jx0uGiZMV","reason":"tool-calls","snapshot":"c9a48939471280c482f6ac6f70f3b53f5919dcc2","messageID":"msg_g001a08312b686001Zcu2O7F2A","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","type":"step-finish","tokens":{"total":38950,"input":5930,"output":188,"reasoning":0,"cache":{"write":0,"read":32832}},"cost":0}}
+{"type":"step_start","timestamp":1788905454515,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a08312fbb10014AY39vq9f","messageID":"msg_g001a08312db7e001nnXLIH18i","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","snapshot":"ce457c5883c117cb556d4248bc78bc4f81aaaecf","type":"step-start"}}
+{"type":"tool_use","timestamp":1788905454875,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"type":"tool","tool":"read","callID":"call_8c3c5131c7df4897a80feb34","state":{"status":"completed","input":{"file_path":"/mnt/workdrive/research-stage/prompts/research-stages/adversarial.md"},"output":"<path>/mnt/workdrive/research-stage/prompts/research-stages/adversarial.md</path>\n<type>file</type>\n<content>\n1: # Research Stage: ADVERSARIAL\n2: \n3: ## Process capsule\n4: - Issue: {{ISSUE_NUMBER}}\n5: - Round: {{ROUND}}\n6: - Stage: ADVERSARIAL (of 8)\n7: - Prior artifacts: {{PRIOR_ARTIFACTS}}\n8: - Blocking unknowns: {{BLOCKING_UNKNOWNS}}\n9: \n10: ## Your task\n11: Actively seek evidence AGAINST the current preferred approach.\n12: \n13: ## You MUST\n14: search for failures, limitations, simpler alternatives, negative results\n15: \n16: ## You MUST NOT\n17: do NOT advocate for the preferred approach\n18: \n19: ## Output\n20: Produce your stage artifact as structured text. End with:\n21: ```\n22: StageCompleted: ADVERSARIAL\n23: ```\n24: \n25: If you cannot complete this stage, end with:\n26: ```\n27: StageFailed: ADVERSARIAL\n28: Reason: <why>\n29: ```\n\n(End of file - total 29 lines)\n</content>","metadata":{"preview":"# Research Stage: ADVERSARIAL\n\n## Process capsule\n- Issue: {{ISSUE_NUMBER}}\n- Round: {{ROUND}}\n- Stage: ADVERSARIAL (of 8)\n- Prior artifacts: {{PRIOR_ARTIFACTS}}\n- Blocking unknowns: {{BLOCKING_UNKNOWNS}}\n\n## Your task\nActively seek evidence AGAINST the current preferred approach.\n\n## You MUST\nsearch for failures, limitations, simpler alternatives, negative results\n\n## You MUST NOT\ndo NOT advocate for the preferred approach\n\n## Output\nProduce your stage artifact as structured text. End with:","truncated":false,"loaded":[]},"title":"prompts/research-stages/adversarial.md","time":{"start":1788905454862,"end":1788905454873}},"id":"prt_g001a08312fbb20019jx0WwNUg","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","messageID":"msg_g001a08312db7e001nnXLIH18i"}}
+{"type":"step_finish","timestamp":1788905454897,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a08312fd1a0027Las54K1r","reason":"tool-calls","snapshot":"1cda5d9f4b6b8ad3bae3b7f608d14459249b8d52","messageID":"msg_g001a08312db7e001nnXLIH18i","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","type":"step-finish","tokens":{"total":39053,"input":241,"output":28,"reasoning":0,"cache":{"write":0,"read":38784}},"cost":0}}
+{"type":"step_start","timestamp":1788905483646,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a083136d7b001e2Y5ehfSm","messageID":"msg_g001a08312fd4d001V7pti0oTL","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","snapshot":"4d57ddb88c46510b72e7e0696ae6430cffe5c239","type":"step-start"}}
+{"type":"text","timestamp":1788905484633,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a08313712f001dEBl629JH","messageID":"msg_g001a08312fd4d001V7pti0oTL","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","type":"text","text":"The stage prompt matches the capsule. The preferred approach (from DEFINE + OUTWARD_READING) is roughly: **WAL mode + per-connection PRAGMA stack + busy_timeout retry in Rune's multi-process topology, with an acceptance test built on pytest-benchmark + multiprocessing**. My adversarial job is to attack that. I'll load the firecrawl-search skill to run targeted counter-evidence searches.","time":{"start":1788905484591,"end":1788905484626}}}
+{"type":"tool_use","timestamp":1788905484642,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"type":"tool","tool":"skill","callID":"call_fe257c42d788479b826ad6a6","state":{"status":"completed","input":{"name":"firecrawl-search"},"output":"<skill_content name=\"firecrawl-search\">\n# Skill: firecrawl-search\n\n# firecrawl search\n\nWeb search with optional content scraping. Returns search results as JSON, optionally with full page content.\n\n## When to use\n\n- You don't have a specific URL yet\n- You need to find pages, answer questions, or discover sources\n- First step in the [workflow escalation pattern](firecrawl-cli): search → scrape → map → crawl → interact\n\n## Quick start\n\n```bash\n# Basic search\nfirecrawl search \"your query\" -o .firecrawl/result.json --json\n\n# Search and scrape full page content from results\nfirecrawl search \"your query\" --scrape -o .firecrawl/scraped.json --json\n\n# News from the past day\nfirecrawl search \"your query\" --sources news --tbs qdr:d -o .firecrawl/news.json --json\n```\n\n## Options\n\n| Option                               | Description                                   |\n| ------------------------------------ | --------------------------------------------- |\n| `--limit <n>`                        | Max number of results                         |\n| `--sources <web,images,news>`        | Source types to search                        |\n| `--categories <github,research,pdf>` | Filter by category                            |\n| `--tbs <qdr:h\\|d\\|w\\|m\\|y>`          | Time-based search filter                      |\n| `--location`                         | Location for search results                   |\n| `--country <code>`                   | Country code for search                       |\n| `--scrape`                           | Also scrape full page content for each result |\n| `--scrape-formats`                   | Formats when scraping (default: markdown)     |\n| `-o, --output <path>`                | Output file path                              |\n| `--json`                             | Output as JSON                                |\n\n## Tips\n\n- **`--scrape` fetches full content** — don't re-scrape URLs from search results. This saves credits and avoids redundant fetches.\n- Always write results to `.firecrawl/` with `-o` to avoid context window bloat.\n- Use `jq` to extract URLs or titles: `jq -r '.data.web[].url' .firecrawl/search.json`\n- Naming convention: `.firecrawl/search-{query}.json` or `.firecrawl/search-{query}-scraped.json`\n\n## See also\n\n- [firecrawl-scrape](../firecrawl-scrape/SKILL.md) — scrape a specific URL\n- [firecrawl-map](../firecrawl-map/SKILL.md) — discover URLs within a site\n- [firecrawl-crawl](../firecrawl-crawl/SKILL.md) — bulk extract from a site\n\nBase directory for this skill: file:///home/nick/.agents/skills/firecrawl-search\nRelative paths in this skill (e.g., scripts/, reference/) are relative to this base directory.\nNote: file list is sampled.\n\n<skill_files>\n\n</skill_files>\n</skill_content>","metadata":{"name":"firecrawl-search","dir":"/home/nick/.agents/skills/firecrawl-search","truncated":false},"title":"Loaded skill: firecrawl-search","time":{"start":1788905484631,"end":1788905484641}},"id":"prt_g001a083137141001DmVyapp46","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","messageID":"msg_g001a08312fd4d001V7pti0oTL"}}
+{"type":"step_finish","timestamp":1788905484668,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a083137162001yjJsm0ml3","reason":"tool-calls","snapshot":"c1224f82420c8f21626ee984912086d836972431","messageID":"msg_g001a08312fd4d001V7pti0oTL","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","type":"step-finish","tokens":{"total":40122,"input":283,"output":799,"reasoning":0,"cache":{"write":0,"read":39040}},"cost":0}}
+{"type":"step_start","timestamp":1788905491339,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a083138b89001bOnp5zOS3","messageID":"msg_g001a0831371b5001loYUZE0tL","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","snapshot":"5a03f7d0004616a4ba7bbe4c7b29cd4722c2081f","type":"step-start"}}
+{"type":"text","timestamp":1788905498635,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a083138b8a001di903lSGs","messageID":"msg_g001a0831371b5001loYUZE0tL","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","type":"text","text":"Now I'll run counter-evidence searches in parallel — targeting WAL write-throughput negatives, busy_timeout pitfalls, per-connection PRAGMA costs, and the harness/tooling fit, plus simpler alternatives (single-writer thread, serializing writes).","time":{"start":1788905491338,"end":1788905498633}}}
+{"type":"tool_use","timestamp":1788905499996,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"type":"tool","tool":"bash","callID":"call_ec656423485b4c5ea079da25","state":{"status":"completed","input":{"command":"cd /mnt/workdrive/research-stage/research/issue-262/.firecrawl && firecrawl search \"pytest-benchmark multi-process concurrency testing limitations xdist disabled\" --limit 5 -o harness-limitations.json --json 2>&1 | tail -1; echo ---; firecrawl search \"sqlite WAL index shm corruption multiple processes python data loss unreferenced wal\" --limit 6 -o wal-risks.json --json 2>&1 | tail -1","description":"Search harness limits and WAL operational risks","timeout":180000},"output":"---\nzsh:cd:1: no such file or directory: /mnt/workdrive/research-stage/research/issue-262/.firecrawl\n","metadata":{"output":"---\nzsh:cd:1: no such file or directory: /mnt/workdrive/research-stage/research/issue-262/.firecrawl\n","exit":0,"description":"Search harness limits and WAL operational risks","truncated":false},"title":"Search harness limits and WAL operational risks","time":{"start":1788905498646,"end":1788905499995}},"id":"prt_g001a083139ec9001NB2N8SFha","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","messageID":"msg_g001a0831371b5001loYUZE0tL"}}
+{"type":"tool_use","timestamp":1788905500109,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"type":"tool","tool":"bash","callID":"call_067bd5ba138c4334a25cd61c","state":{"status":"completed","input":{"command":"cd /mnt/workdrive/research-stage/research/issue-262/.firecrawl && firecrawl search \"python sqlite3 opening connection expensive per-connection PRAGMA overhead WAL sqlite-vec load\" --limit 6 -o conn-overhead.json --json 2>&1 | tail -1; echo ---; firecrawl search \"sqlite single writer thread queue instead of WAL multi-process alternative architecture\" --limit 6 -o alternatives.json --json 2>&1 | tail -1","description":"Search connection overhead and simpler alternatives","timeout":180000},"output":"---\nzsh:cd:1: no such file or directory: /mnt/workdrive/research-stage/research/issue-262/.firecrawl\n","metadata":{"output":"---\nzsh:cd:1: no such file or directory: /mnt/workdrive/research-stage/research/issue-262/.firecrawl\n","exit":0,"description":"Search connection overhead and simpler alternatives","truncated":false},"title":"Search connection overhead and simpler alternatives","time":{"start":1788905498644,"end":1788905500108}},"id":"prt_g001a08313967a001jITwnVO1A","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","messageID":"msg_g001a0831371b5001loYUZE0tL"}}
+{"type":"tool_use","timestamp":1788905501460,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"type":"tool","tool":"bash","callID":"call_ffe2cdb1052d4e8b97db9e6a","state":{"status":"completed","input":{"command":"mkdir -p /mnt/workdrive/research-stage/research/issue-262/.firecrawl && cd /mnt/workdrive/research-stage/research/issue-262/.firecrawl && firecrawl search \"sqlite WAL mode concurrent writers slower than journal mode DELETE benchmark negative result\" --limit 6 -o wal-negative.json --json 2>&1 | tail -1; echo ---; firecrawl search \"sqlite busy_timeout doesn't work with BEGIN IMMEDIATE deferred transaction SQLITE_BUSY pitfall\" --limit 6 -o busy-pitfalls.json --json 2>&1 | tail -1","description":"Search WAL negative results and busy_timeout pitfalls","timeout":180000},"output":"---\n","metadata":{"output":"---\n","exit":0,"description":"Search WAL negative results and busy_timeout pitfalls","truncated":false},"title":"Search WAL negative results and busy_timeout pitfalls","time":{"start":1788905500325,"end":1788905501458}},"id":"prt_g001a083138be4001qn56itNY7","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","messageID":"msg_g001a0831371b5001loYUZE0tL"}}
+{"type":"step_finish","timestamp":1788905501486,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a08313b314001ybSFCN4Es","reason":"tool-calls","snapshot":"63b4d009be3e6fe0ec5ec346a2e224e7bab36d08","messageID":"msg_g001a0831371b5001loYUZE0tL","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","type":"step-finish","tokens":{"total":40494,"input":681,"output":453,"reasoning":0,"cache":{"write":0,"read":39360}},"cost":0}}
+{"type":"step_start","timestamp":1788905510069,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a08313d4b2001PKL4UMl98","messageID":"msg_g001a08313b34b001Pm3JMbie4","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","snapshot":"71ff2249362e7066ecb1d8e3cff29030cd925094","type":"step-start"}}
+{"type":"text","timestamp":1788905511223,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a08313d54c001k8UYkVzV1","messageID":"msg_g001a08313b34b001Pm3JMbie4","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","type":"text","text":"Parallel `cd` race — the second/third calls ran before the directory existed. Let me check what the first call actually produced, then rerun the two failed searches sequentially.","time":{"start":1788905510220,"end":1788905511221}}}
+{"type":"tool_use","timestamp":1788905511231,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"type":"tool","tool":"bash","callID":"call_3f4481b4ae294084a74415c9","state":{"status":"completed","input":{"command":"ls -la /mnt/workdrive/research-stage/research/issue-262/.firecrawl/ 2>/dev/null; head -c 300 /mnt/workdrive/research-stage/research/issue-262/.firecrawl/wal-negative.json 2>/dev/null","description":"Check firecrawl output files"},"output":"total 20\ndrwxr-xr-x 2 nick nick 4096 Sep  8 23:11 .\ndrwxr-xr-x 4 nick nick 4096 Sep  8 23:11 ..\n-rw-r--r-- 1 nick nick 4526 Sep  8 23:11 busy-pitfalls.json\n-rw-r--r-- 1 nick nick 3077 Sep  8 23:11 wal-negative.json\n{\"success\":true,\"data\":{\"web\":[{\"url\":\"https://sqlite.org/forum/info/117c91891cf7ac15\",\"title\":\"WAL mode speed vs normal comparison - SQLite User Forum\",\"description\":\"WAL is about concurrency, not speed. How could it be faster, for a single connection? Has to potentially re-assemble a table (or ind","metadata":{"output":"total 20\ndrwxr-xr-x 2 nick nick 4096 Sep  8 23:11 .\ndrwxr-xr-x 4 nick nick 4096 Sep  8 23:11 ..\n-rw-r--r-- 1 nick nick 4526 Sep  8 23:11 busy-pitfalls.json\n-rw-r--r-- 1 nick nick 3077 Sep  8 23:11 wal-negative.json\n{\"success\":true,\"data\":{\"web\":[{\"url\":\"https://sqlite.org/forum/info/117c91891cf7ac15\",\"title\":\"WAL mode speed vs normal comparison - SQLite User Forum\",\"description\":\"WAL is about concurrency, not speed. How could it be faster, for a single connection? Has to potentially re-assemble a table (or ind","exit":0,"description":"Check firecrawl output files","truncated":false},"title":"Check firecrawl output files","time":{"start":1788905511228,"end":1788905511230}},"id":"prt_g001a08313d565001NpxHCcAwF","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","messageID":"msg_g001a08313b34b001Pm3JMbie4"}}
+{"type":"step_finish","timestamp":1788905511260,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a08313d93f001oKgieE900","reason":"tool-calls","snapshot":"eb96a1349433369a6b514c15cf46aea184703371","messageID":"msg_g001a08313b34b001Pm3JMbie4","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","type":"step-finish","tokens":{"total":40750,"input":501,"output":185,"reasoning":0,"cache":{"write":0,"read":40064}},"cost":0}}
+{"type":"step_start","timestamp":1788905517314,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a08313f100001DH0lsLuI4","messageID":"msg_g001a08313d97f001W7IBNIhb5","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","snapshot":"0eb1d789c0f9925a18e2d8d167aefca95e129892","type":"step-start"}}
+{"type":"text","timestamp":1788905521145,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a08313f101001JY0w2w6B5","messageID":"msg_g001a08313d97f001W7IBNIhb5","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","type":"text","text":"The first call's two searches succeeded despite the odd output. Now rerun the four remaining searches with the directory existing this time:","time":{"start":1788905517313,"end":1788905521143}}}
+{"type":"tool_use","timestamp":1788905523556,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"type":"tool","tool":"bash","callID":"call_b745bb492612472283349aaa","state":{"status":"completed","input":{"command":"firecrawl search \"pytest-benchmark limitations multi-process concurrency testing pytest-xdist auto-disable\" --limit 5 -o harness-limitations.json --json 2>&1 | tail -1; echo ---; firecrawl search \"sqlite WAL shm wal-index corruption risks multiple processes data loss\" --limit 6 -o wal-risks.json --json 2>&1 | tail -1","description":"Search harness limits and WAL risks","timeout":180000,"workdir":"/mnt/workdrive/research-stage/research/issue-262/.firecrawl"},"output":"---\n","metadata":{"output":"---\n","exit":0,"description":"Search harness limits and WAL risks","truncated":false},"title":"Search harness limits and WAL risks","time":{"start":1788905522231,"end":1788905523555}},"id":"prt_g001a08313f800001BpIgGCqtX","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","messageID":"msg_g001a08313d97f001W7IBNIhb5"}}
+{"type":"tool_use","timestamp":1788905523560,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"type":"tool","tool":"bash","callID":"call_be4821f5ed6f4df4a83de749","state":{"status":"completed","input":{"command":"firecrawl search \"python sqlite3 per-connection overhead opening connection each time expensive performance\" --limit 6 -o conn-overhead.json --json 2>&1 | tail -1; echo ---; firecrawl search \"sqlite single writer thread queue alternative to WAL for multi-process writes\" --limit 6 -o alternatives.json --json 2>&1 | tail -1","description":"Search connection overhead and simpler alternatives","timeout":180000,"workdir":"/mnt/workdrive/research-stage/research/issue-262/.firecrawl"},"output":"---\n","metadata":{"output":"---\n","exit":0,"description":"Search connection overhead and simpler alternatives","truncated":false},"title":"Search connection overhead and simpler alternatives","time":{"start":1788905522473,"end":1788905523559}},"id":"prt_g001a08313f158001WpPCl1Je7","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","messageID":"msg_g001a08313d97f001W7IBNIhb5"}}
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+{"type":"tool_use","timestamp":1788905527814,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"type":"tool","tool":"bash","callID":"call_e0646af121c44927993d1382","state":{"status":"completed","input":{"command":"for f in conn-overhead alternatives harness-limitations wal-risks; do echo \"=== $f ===\"; jq -r '.data.web[]? | \"\\(.title) | \\(.url) | \\(.description // \"\" | .[0:160])\"' $f.json 2>/dev/null; done","description":"Extract titles/URLs/descriptions from all search results","workdir":"/mnt/workdrive/research-stage/research/issue-262/.firecrawl"},"output":"=== conn-overhead ===\nHow expensive sqlite3.connect and close in SQLite? - Stack Overflow | https://stackoverflow.com/questions/3747232/how-expensive-sqlite3-connect-and-close-in-sqlite | Connections are fairly expensive – they correspond to opening the file – but cursors aren't very so use as many as you need.python - Efficiency of reopening sql\nSQLite async connection pool for high-performance - Hacker News | https://news.ycombinator.com/item?id=44530518 | Opening and closing SQLite connections is expensive. If we can re-use the same instance things go a lot faster. anacrolix on July 15, 2025 ...\nTips for getting SQLite under Python to perform better with more RAM? | https://sqlite.org/forum/info/4393a42b3b5e2382 | I'm interested in getting better performance out of SQLite on machines with more RAM, using the Python sqlite3 module from the standard ...Questions about runni\nGetting the most out of SQLite3 with Python | https://remusao.github.io/posts/few-tips-sqlite-perf.html | # Getting the most out of SQLite3 with Python\n## Use Bulk Operations\n```\nconnection.executemany(\n    'INSERT INTO my_table VALUE (?)',\n    iter_data()\n)\n```\n\n- \nsqlite3 — DB-API 2.0 interface for SQLite databases — Python 3.14.7 ... | https://docs.python.org/3/library/sqlite3.html | # `sqlite3` — DB-API 2.0 interface for SQLite databases [¶](https://docs.python.org/3/library/sqlite3.html#module-sqlite3)\n## Reference [¶](https://docs.python.\nSQLite Optimizations For Ultra High-Performance - PowerSync | https://powersync.com/blog/sqlite-optimizations-for-ultra-high-performance | # SQLite Optimizations For Ultra High-Performance\n## Key SQLite Performance Optimizations To Consider\n### **#** 1: Enable Write-Ahead Logging (WAL) And Disable \n=== alternatives ===\nWhat does, if many threads and/or processes need to write ... - SQLite | https://sqlite.org/forum/info/6ed6824176b9c773 | # What does, if many threads and/or processes need to write the database at the same instant, mean?\n### (2) By [ThanksRyan](https://sqlite.org/forum/timeline?ss\nI've yet to see how you can use SQLite for a multi-user multi-write app ... | https://news.ycombinator.com/item?id=31473373 | SQLite uses a queue (in WAL mode) in order to handle concurrent writes. In WAL mode it can handle a single writer with concurrent readers. A single thread; no .\nConfused about SQLite and concurrency : r/learnprogramming | https://www.reddit.com/r/learnprogramming/comments/1l82ohn/confused_about_sqlite_and_concurrency/ | So sqlite, with WAL enabled, supports multiple readers at the same time, and supports reading and writing at the same time. The only thing it ...Question regard\nSingle-writer Database Architecture with SQLite - Bugsink | https://www.bugsink.com/blog/database-transactions/ | SQLite allows only one writer at a time. Even in WAL mode, concurrent write transactions are not possible – any attempt to write while another ...\nSQLite alternative with concurrent writing (Delphi) - Stack Overflow | https://stackoverflow.com/questions/9264772/sqlite-alternative-with-concurrent-writing-delphi | You may consider using FireBird which has a more complex (and tuned) architecture for client-server. SQLite3 default writing method is expected ...SQLite Concur\nThe Write Stuff: Concurrent Write Transactions in SQLite | https://oldmoe.blog/2024/07/08/the-write-stuff-concurrent-write-transactions-in-sqlite/ | SQLite, using the Write-Ahead-Log (WAL) journaling mode, supports an unlimited number of readers and a single writer any given moment.\n=== harness-limitations ===\nRunning tests across multiple CPUs — pytest-xdist documentation | https://pytest-xdist.readthedocs.io/en/stable/distribution.html | - Running tests across multiple CPUs\n\n# Running tests across multiple CPUs [](https://pytest-xdist.readthedocs.io/en/stable/distribution.html#running-tests-acr\nHow to run pytest tests in parallel? - python - Stack Overflow | https://stackoverflow.com/questions/45733763/how-to-run-pytest-tests-in-parallel | UPDATE: The solution below is to demonstrate concurrent pytests are possible, but pytest-parallel is currently unmaintained. pytest-xdist is a ...pytest fixture\nIs there an easy way to disable thread parallelism for tests in one file? | https://github.com/pytest-dev/pytest/discussions/12188 | If you're using the pytest-xdist plugin … you can disable parallelism by specifyiLine truncated
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+{"type":"step_start","timestamp":1788905533224,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a083142f26001lWw0liYPF","messageID":"msg_g001a083141a39001hzKKXS4T5","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","snapshot":"365ae35a1d223f79995e18abef76315989693620","type":"step-start"}}
+{"type":"tool_use","timestamp":1788905534631,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"type":"tool","tool":"bash","callID":"call_80a9aedb617c47f49f4f643e","state":{"status":"completed","input":{"command":"for f in wal-negative busy-pitfalls; do echo \"=== $f ===\"; jq -r '.data.web[]? | \"\\(.title) | \\(.url) | \\(.description // \"\" | .[0:160])\"' $f.json 2>/dev/null; done","description":"Extract results from first-batch searches","workdir":"/mnt/workdrive/research-stage/research/issue-262/.firecrawl"},"output":"=== wal-negative ===\nWAL mode speed vs normal comparison - SQLite User Forum | https://sqlite.org/forum/info/117c91891cf7ac15 | WAL is about concurrency, not speed. How could it be faster, for a single connection? Has to potentially re-assemble a table (or index) pages ...WAL journal and\nStop the SQLite Performance Wars: Your Database Can Be 10x Faster ... | https://javascript.plainenglish.io/stop-the-sqlite-performance-wars-your-database-can-be-10x-faster-and-its-not-magic-156022addc75 | # Stop the SQLite Performance Wars: Your Database Can Be 10x Faster (and it’s not magic!) ✨🚀\n## The Great Showdown: Rollback vs. The WAL Wizardry\n- **With WAL:*\nWAL Mode, SQLite3 Bulk updates/inserts : r/sqlite - Reddit | https://www.reddit.com/r/sqlite/comments/1ecjvst/wal_mode_sqlite3_bulk_updatesinserts/ | WAL mode is slower than JOURNAL_MODE=DELETE for inserts. WAL stands for Write Ahead Log. not perform the same thing because another process ...Sqlite wal mode r\nSQLite's WAL mode is fast fast - YouTube | https://www.youtube.com/watch?v=qf0GqRz-c74 | Want to learn more SQLite? Check out the full course: https://highperformancesqlite.com. Get your free SQLite reference guide: ...\nmysql - Why is SQLite WAL mode so much faster than default DELETE ... | https://superuser.com/questions/1938008/why-is-sqlite-wal-mode-so-much-faster-than-default-delete-mode-for-concurrent-wr | The write performance improved drastically, almost by a factor of 4 or 5, and the disk activity dropped significantly. I understand that WAL ...\nSQLite: enable WAL mode and busy_timeout for concurrent write ... | https://github.com/cashubtc/nutshell/issues/907 | # SQLite: enable WAL mode and busy_timeout for concurrent write performance#907\n## Problem\n```\n2026-02-25 19:27:31 | ERROR | cashu.mint.app:catch_exceptions:107\n=== busy-pitfalls ===\nWhat to do about SQLITE_BUSY errors despite setting a timeout | https://berthub.eu/articles/posts/a-brief-post-on-sqlite3-database-locked-despite-timeout/ | # SQLite transactions\nYou can also force this decision with BEGIN IMMEDIATE, which always starts a write transaction.\n\n```sql\npragma journal_mode=\"wal\"; -- only\nWhat to do about SQLITE_BUSY errors despite setting a timeout | https://lobste.rs/s/yapvon/what_do_about_sqlite_busy_errors_despite | TLDR: if you're seeing SQLITE_BUSY errors, try using BEGIN IMMEDIATE for transactions that you know are going to be a write. It turns out I've ...\nIn SQLite, transactions by default start in “deferred” mode. This means ... | https://news.ycombinator.com/item?id=45781519 | The fix is to set a busy_timeout and to begin any transaction ... Note that busy_timeout is not applicable to SQLite in this case (the SQLITE_BUSY issued ...\nHelp understanding the effect of BEGIN IMMEDIATE - SQLite | https://sqlite.org/forum/forumpost/04ed1d235b | # Help understanding the effect of BEGIN IMMEDIATE\n### (1) By Simon Willison ( [simonw](https://sqlite.org/forum/timeline?ss=v&y=f&vfx&u=simonw)) on 2024-06-21 \nImplementing busy-waiting on SQLite | https://sqlite-users.sqlite.narkive.com/66NfRrlL/implementing-busy-waiting-on-sqlite | If the transaction contains a command that will change the database (eg delete, update or insert), then use \"begin immediate\" to start the transaction, so that \nSimon Willison on sqlite-busy | https://simonwillison.net/tags/sqlite-busy/ | The fix is to use BEGIN IMMEDIATE if you know your transaction is going to make a write. Bert provides the clearest explanation I've seen yet of ...\n","metadata":{"output":"=== wal-negative ===\nWAL mode speed vs normal comparison - SQLite User Forum | https://sqlite.org/forum/info/117c91891cf7ac15 | WAL is about concurrency, not speed. How could it be faster, for a single connection? Has to potentially re-assemble a table (or index) pages ...WAL journal and\nStop the SQLite Performance Wars: Your Database Can Be 10x Faster ... | https://javascript.plainenglish.io/stop-the-sqlite-performance-wars-your-database-can-be-10x-faster-and-its-not-magic-156022addc75 | # Stop the SQLite Performance Wars: Your Database Can Be 10x Faster (and it’s not magic!) ✨🚀\n## The Great Showdown: Rollback vs. The WAL Wizardry\n- **With WAL:*\nWAL Mode, SQLite3 Bulk updates/inserts : r/sqlite - Reddit | https://www.reddit.com/r/sqlite/comments/1ecjvst/wal_mode_sqlite3_bulk_updatesinserts/ | WAL mode is slower than JOURNAL_MODE=DELETE for inserts. WAL stands for Write Ahead Log. not pLine truncated
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+{"type":"step_start","timestamp":1788905539502,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a0831447ac001wdkqAGKji","messageID":"msg_g001a0831434df001tH517JJfh","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","snapshot":"89f2598119aabe94bc54520d7c7366f9eb476401","type":"step-start"}}
+{"type":"text","timestamp":1788905544071,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a0831447ad001AmNYELAPc","messageID":"msg_g001a0831434df001tH517JJfh","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","type":"text","text":"Good yield. Let me scrape the four highest-value attack sources: Bugsink single-writer architecture (alternative), avi.im WAL checksum silent-loss post, the Reddit \"WAL slower for inserts\" thread, and berthub SQLITE_BUSY-despite-timeout.","time":{"start":1788905539501,"end":1788905544069}}}
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+{"type":"step_start","timestamp":1788905559919,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a08314976d001RFBPpDvUv","messageID":"msg_g001a083148105001P7DZJ37m6","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","snapshot":"183a84adc5763d7e1182b96d7b5093f9829b9eb5","type":"step-start"}}
+{"type":"tool_use","timestamp":1788905562693,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"type":"tool","tool":"bash","callID":"call_d3758014e12d46aa98e4e3a2","state":{"status":"completed","input":{"command":"grep -B2 -A 25 -i \"checksum\" s-aviim.md | head -70","description":"Extract WAL checksum silent loss claims","workdir":"/mnt/workdrive/research-stage/research/issue-262/.firecrawl"},"output":"[About](https://avi.im/blag/about)[Now](https://avi.im/blag/now)\n\n# PSA: SQLite WAL checksums fail silently and may lose data\n\n22 Jul 2025\n\nThis is a follow-up post to my [PSA: SQLite does not do checksums](https://avi.im/blag/2024/sqlite-bit-flip) and [PSA: Most databases do not do checksums by default](https://avi.im/blag/2024/databases-checksum). In the previous posts I mentioned that SQLite does not do checksums by default, but it has checksums in WAL mode. However, on checksum errors, instead of raising error, it drops all the subsequent frames. Even if they are not corrupt. This is not a bug; it’s intentional.\n\nDisclosure: I work at Turso, which maintains a SQLite fork, libSQL. Since libSQL is a fork, it also has the same issue.\n\n## SQLite WAL\n\nSQLite introduced WAL in 2010. It’s not the default mode, but you’re likely using it if you want higher write throughput. Whenever you make writes, they are first written to the WAL file. Then, during checkpoint operations, the database pages are written from the WAL to the main DB file. Each page in the WAL is called a frame. Each frame has a header, which comprises the frame number, page number, commit marker, and checksums.\n\n![SQLite Frame](https://avi.im/blag/images/2025/sqlite-frame.svg)\n\nThe way checksums work in WAL is interesting. They use rolling checksums, meaning the checksum of the n+1 frame is computed with the checksum of the nth frame. In other words, a frame’s checksum depends on the previous frame.\n\n![SQLite Rolling Checksum](https://avi.im/blag/images/2025/sqlite-rolling-checksums.svg)\n\n## Recovery\n\nIf one frame is found to have a checksum mismatch, you can’t be sure that the next frame isn’t corrupted either. What’s interesting is that when a frame is found to have a missing or invalid checksum, SQLite drops that frame and all the subsequent frames. This is [documented](https://www.sqlite.org/walformat.html#recovery):\n\n> Recovery works by doing a single pass over the WAL, from beginning to end. The checksums are verified on each frame of the WAL as it is read. The scan stops at the end of the file or at the first invalid checksum. The mxFrame field is set to the index of the last valid commit frame in WAL.\n\nEarlier I mentioned SQLite does not do checksums by default, so it won’t ever notice if a page is corrupt. So when is WAL checksum verification triggered? A WAL may contain multiple frames for the same page number. To make lookups faster, SQLite maintains an index called the WAL Index. This is the `.db-shm` file you often see. During the building of this index, SQLite checks the checksums.\n\nYou can verify this in the code as well. The recovery process happens in [`walIndexRecover`](https://github.com/sqlite/sqlite/blob/version-3.50.3/src/wal.c#L1384), this calls [`walDecodeFrame`](https://github.com/sqlite/sqlite/blob/version-3.50.3/src/wal.c#L1000) which has this:\n\n```c\n/* A frame is only valid if a checksum of the WAL header,\n** all prior frames, the first 16 bytes of this frame-header,\n** and the frame-data matches the checksum in the last 8\n** bytes of this frame-header.\n*/\nnativeCksum = (pWal->hdr.bigEndCksum==SQLITE_BIGENDIAN);\nwalChecksumBytes(nativeCksum, aFrame, 8, aCksum, aCksum);\nwalChecksumBytes(nativeCksum, aData, pWal->szPage, aCksum, aCksum);\nif( aCksum[0]!=sqlite3Get4byte(&aFrame[16])\n || aCksum[1]!=sqlite3Get4byte(&aFrame[20])\n){\n  /* Checksum failed. */\n  return 0;\n}\n```\n\nTo trigger this issue, the following needs to happen:\n\n1. You have SQLite `.db` and `.db-wal` files, but no accompanying `.db-shm` file. Maybe your friend shared it with you, or you downloaded some data off the internet.\n2. Unclean shutdown during WAL write. The WAL index is updated after a successful write. Maybe after the WAL write, the process crashed, and the index wasn’t updated. On the next start, SQLite rebuilds the index.\n\nDuring this process, if there’s a checksum mismatch on a frame, that frame and the rest of the WAL frames are dropped. Even if they are not corrupt (technically)! Note that SQLite always checkpoints and truncates the WAL file on the last connection close.\n\n## Demo\n\n![](https://avi.im/blag/images/2025/sqlite-wal-checksum.gif)\n\nAlice would have lost money, [again](https://avi.im/blag/2024/sqlite-bit-flip). Poor Alice.\n\n## Thoughts\n\n1. I really don’t like that SQLite doesn’t throw any error on detection of corruption\n2. Since it automatically checkpoints every time, the data is lost too\n\nI’m not sure why this is the default behavior. BackLine truncated
+{"type":"tool_use","timestamp":1788905562697,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"type":"tool","tool":"bash","callID":"call_e7f374e7d3a3413ead2b0949","state":{"status":"completed","input":{"command":"grep -A 40 -i \"single-writer\" s-bugsink.md | head -80","description":"Extract single-writer architecture argument from Bugsink","workdir":"/mnt/workdrive/research-stage/research/issue-262/.firecrawl"},"output":"# The single-writer Database Architecture\n\n![Klaas van Schelven](https://www.bugsink.com/static/images/klaas.beec86a2df8b.webp)\n\nKlaas van Schelven;\n\nMarch 24, 2025 - 9 min read\n\n\\| tags: [architecture](https://www.bugsink.com/blog/tags/architecture/)\n\n![A conveyor belt with lady-bugs](https://www.bugsink.com/static/images/conveyor-cropped-big.52fd9cc08fb0.webp)\n\nConveyor belt with lady-bugs. Representing the idea of processing events in a predictable, sequential manner.\n\n\n**TL;DR**: Bugsink uses a **single-writer architecture** to keep database state consistent and predictable.\nThis model is **built around SQLite’s concurrency model**: for writes, a global lock; for reads, snapshot isolation.\nBugsink’s specific use case ( **event processing**) makes this model a perfect fit.\n\n### Introduction & Design Goals\n\nIn this article, we’ll take a look at Bugsink’s transaction model, and how it uses SQLite’s unique properties to\ncreate a simple, stable, and efficient system.\n\nBugsink is a self-hosted error tracker. This means that it’s built to be **simple to operate and safe to run**: everybody\nshould be able to set it up and keep it running without too much hassle.\n\nIt’s also designed to be **simple to maintain**: I’m a single developer taking on a market in which VC-backed _unicorns_ operate. This\nmeans that I need to be able to reason about the system’s behavior quickly and confidently, even if I haven’t touched\nthat particular part of the code in months.\n\nHere’s how the broader design goals translate into the transaction model:\n\n- **Stability**: No weird edge cases, no locking errors, no surprises under load.\n\n- **Data Integrity**: The transaction model should ensure that data is never left in an inconsistent state, even if something goes wrong.\n(this is a bit of an open door, but it’s worth stating explicitly).\n\n- **Simplicity**: The transaction model should be simple to understand and implement. There’s one way to do it, it’s used\neverywhere, and it’s easy to reason about later. Think once, apply everywhere.\n\n- **Alignment with SQLite**: Lean into what SQLite is good at. Treat its limits as “features in disguise”, shaping\nforces that guide the design. Don’t fight the datbase.\n\n- **Fit with Bugsink’s Architecture**:\nBugsink makes strong, opinionated choices, and the transaction model leans into them. Also: the way we interact with\nthe database might just influence the way we structure the application.\n\n\nAll of these goals point in the same direction: I want a system that works correctly, but without adding extra overhead\nto my development process.\n\nContrast this with the typical “just don’t want to think about transactions at all” approach, where you just do CRUD\noperations throughout the code. That may just work, until it doesn’t. And that’s not acceptible to me.\n\nStill, the underlying objective of not having to think about transactions all the time _is_ very valuable. The\n","metadata":{"output":"# The single-writer Database Architecture\n\n![Klaas van Schelven](https://www.bugsink.com/static/images/klaas.beec86a2df8b.webp)\n\nKlaas van Schelven;\n\nMarch 24, 2025 - 9 min read\n\n\\| tags: [architecture](https://www.bugsink.com/blog/tags/architecture/)\n\n![A conveyor belt with lady-bugs](https://www.bugsink.com/static/images/conveyor-cropped-big.52fd9cc08fb0.webp)\n\nConveyor belt with lady-bugs. Representing the idea of processing events in a predictable, sequential manner.\n\n\n**TL;DR**: Bugsink uses a **single-writer architecture** to keep database state consistent and predictable.\nThis model is **built around SQLite’s concurrency model**: for writes, a global lock; for reads, snapshot isolation.\nBugsink’s specific use case ( **event processing**) makes this model a perfect fit.\n\n### Introduction & Design Goals\n\nIn this article, we’ll take a look at Bugsink’s transaction model, and how it uses SQLite’s unique properties to\ncreate a simple, stable, and efficient system.\n\nBugsink is a self-hosted error tracker. This means that it’s built to be **simple to operate and safe to run**: everybody\nshould be able to set it up and keep it running without too much hassle.\n\nIt’s also designed to be **simple to maintain**: I’m a single developer taking on a market in which VC-backed _unicorns_ operate. This\nmeans that I need to be able to reason about the system’s behavior quickly and confidently, even if I haven’t touched\nthat particular part of the codLine truncated
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+{"type":"tool_use","timestamp":1788905570269,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"type":"tool","tool":"bash","callID":"call_647bf9e4fed641c7943b9207","state":{"status":"completed","input":{"command":"grep -B2 -A 20 -i \"immediate\" s-berthub.md | head -60; echo \"=== SO corrupt key parts ===\"; grep -B2 -A 10 -iE \"corrupt|crashed after\" s-so-corrupt.md | head -50","description":"Extract BEGIN IMMEDIATE pitfall and corruption cases","workdir":"/mnt/workdrive/research-stage/research/issue-262/.firecrawl"},"output":"Last week however, I ran into one of my projects unexpectedly getting [SQLITE\\_BUSY](https://www.sqlite.org/rescode.html#busy) errors. And then someone urged me to run ‘a real database’ (PostgreSQL), and that hurt.\n\n> The tl;dr on this, to prevent SQLITE\\_BUSY errors even when setting a timeout, don’t ever upgrade transactions to read-write. If you know you are going to write in a transaction, use ‘BEGIN IMMEDIATE’, or start off with the write. But do read on for why this is so, and how other databases struggle with this problem as well.\n>\n> Thanks are due to PostgreSQL developer & backdoor-slayer [Andres Freund for sharing his wisdom on Mastodon](https://mastodon.social/@AndresFreundTec/114009633982257113), which found its way into this post. Mistakes remain mine though!\n\nBefore we start, do know I love both PostgreSQL and SQLite, these are two very impressive projects, and we are extremely lucky that we get to benefit from all this excellence.\n\n# The problem\n\nWhen running in [WAL mode](https://www.sqlite.org/wal.html) (which you should), SQLite makes some explicit and detailed concurrency promises: “Readers do not block writers and a writer does not block readers. Reading and writing can proceed concurrently”. The devil is in those details however.\n\nNow, we can easily deal with _waiting_ for the database to do something. Often there aren’t that many writes, and if occasionally two writes have to wait for each other, this is not a problem, especially since SQLite is extremely fast anyhow. SQLite’s single writer mode will often in practice be faster than other server’s multiple writer models, if only because it has no interprocess/network latency penalty. Meanwhile, SQLite offers various timeout settings and functions to deal with waiting for write access.\n\nWhat is harder to deal with however is when queries or inserts don’t wait but immediately dump a SQLITE\\_BUSY error on you, despite setting a timeout. It can be hard to recover from that.\n\nSo why does this happen?\n\n# SQLite transactions\n\nSQLite allows you to [BEGIN a transaction](https://www.sqlite.org/lang_transaction.html) without telling it what kind of transaction this will be: read-only or a read-write transaction. SQLite actually determines this based on the first statement you execute within the transaction. If that is an UPDATE or a DELETE or anything else that changes things, you get a write capable transaction. Otherwise you get a read-only transaction. You can also force this decision with BEGIN IMMEDIATE, which always starts a write transaction.\n\nTo demonstrate this, we’ll first setup a database:\n\n```sql\npragma journal_mode=\"wal\"; -- only have to do this once\ncreate table t (v INT) strict;\n.timeout 10000 -- 10 seconds\n```\n\nNext up, let’s open two parallel connections:\n\n```\nbegin immediate;           |\ninsert into t values (1);  | begin immediate; -- blocks\ncommit;                    | -- we are unblocked\n                           | insert into t values(2);\n                           | commit;\n```\n\nThis is all good. It may be disappointing that SQLite only allows one simultaneous writer, but at least this is clear, and by waiting for a bit, our writes do happen (sequentially). If we leave the transaction on the left open for too long, the right side will get a SQLITE\\_BUSY error:\n\n```\nRuntime error: database is locked (5)\n```\n\nFiguring out the right timeout is not easy. But, if you get a timeout, you can reconsider, and perhaps decide to wait even longer.\n\n# Getting into trouble\n\nAs noted, if you BEGIN a transaction in SQLite without specifying ‘immediate’, SQLite actually only begins a transaction after you submit the first statement, and it will pick the _kind_ of transaction based on that first statement (read-only or read-write).\n\nIf you later in a read-only transaction try to write to the database somehow, SQLite will attempt to _upgrade_ your transaction to a write transaction. And this is where we can run into problems:\n\n```\n                           | begin;\nbegin;                     | insert into t values(2);\nselect count(1) from t;    | -- we are in a WRITE transaction\ninsert into t values(3);   |\nRuntime error: database is locked (5) -- immediately\n=== SO corrupt key parts ===\nAlready have an account? [Log in](https://stackoverflow.com/users/login)\n\n[Skip to main content](https://stackoverflow.com/questiLine truncated
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+{"type":"tool_use","timestamp":1788905575755,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"type":"tool","tool":"bash","callID":"call_d61d53493ce4440682872e7a","state":{"status":"completed","input":{"command":"grep -A 30 -i \"crashed after having opened\" s-so-corrupt.md | head -40; echo ===; grep -B2 -A 15 -iE \"checkpoint starvation|WAL mode is slower|WAL mode is about\" s-bugsink.md s-aviim.md 2>/dev/null | head -20","description":"Extract SO corruption answer details","workdir":"/mnt/workdrive/research-stage/research/issue-262/.firecrawl"},"output":"I ask because ever since I've adopted WAL, I frequently am seeing reports of malformed databases. This seems to mostly occur if a process crashed after having opened a connection (doesn't matter if it's opened with a `SQLITE_OPEN_READONLY` flag or not) and another process had already opened a connection or later opened one. I can't always reproduce this reliably but it seems it has something to do with the -shm and -wal index files having been created by one process and the other process either had a copy of its own in memory or there was some mismatch produced somehow. Not that this should be the case, but could it be that the -shm file used by the new process somehow modifies it (or the .db file) without the first process finding out, and thus leading to a corrupt database (as already noted under 2.4 of How to Corrupt SQLite)?\n\nMy only guess is that having two processes write to the same db is the root cause of these corrupt instances. If this is true, how are we to coordinate between two separate processes without complex inter-process communication in place? Any ideas? I don't want to resort to using `journal_mode=DELETE` given I've got a highly multi-threaded application which otherwise benefits from concurrent readers and a single writer.\n\nBy the way, this is how I open a reader (multiple readers are opened by multiple threads concurrently):\n\n```objectivec\nCopy\nNSString *path = ...\n\nsqlite3 *readOnlyDB = NULL;\n\nBOOL dbOpened = (sqlite3_open_v2(path.UTF8String, &readOnlyDB, SQLITE_OPEN_READONLY | SQLITE_OPEN_WAL, NULL) == SQLITE_OK);\n\nsqlite3_exec(readOnlyDB, \"PRAGMA read_uncommitted=1; PRAGMA query_only=1; PRAGMA synchronous=normal;\", NULL, NULL, NULL);\nsqlite3_unicode_init(readOnlyDB);\nsqlite3_busy_timeout(readOnlyDB, 2000)\n\n// I register custom functions here for the connection\n```\n\nAnd this is how I am opening a writer (a single writer exists for a single process):\n\n```objectivec\nCopy\nBOOL dbOpened = (sqlite3_open_v2(path.UTF8String, &dbConnection, SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, NULL) == SQLITE_OK);\n\nsqlite3_exec(dbConnection, \"PRAGMA main.journal_mode=WAL; PRAGMA synchronous=normal;\", NULL, NULL, NULL);\nsqlite3_unicode_init(dbConnection);\nsqlite3_busy_timeout(dbConnection, 2000);\n\nzsh:1: == not found\n","metadata":{"output":"I ask because ever since I've adopted WAL, I frequently am seeing reports of malformed databases. This seems to mostly occur if a process crashed after having opened a connection (doesn't matter if it's opened with a `SQLITE_OPEN_READONLY` flag or not) and another process had already opened a connection or later opened one. I can't always reproduce this reliably but it seems it has something to do with the -shm and -wal index files having been created by one process and the other process either had a copy of its own in memory or there was some mismatch produced somehow. Not that this should be the case, but could it be that the -shm file used by the new process somehow modifies it (or the .db file) without the first process finding out, and thus leading to a corrupt database (as already noted under 2.4 of How to Corrupt SQLite)?\n\nMy only guess is that having two processes write to the same db is the root cause of these corrupt instances. If this is true, how are we to coordinate between two separate processes without complex inter-process communication in place? Any ideas? I don't want to resort to using `journal_mode=DELETE` given I've got a highly multi-threaded application which otherwise benefits from concurrent readers and a single writer.\n\nBy the way, this is how I open a reader (multiple readers are opened by multiple threads concurrently):\n\n```objectivec\nCopy\nNSString *path = ...\n\nsqlite3 *readOnlyDB = NULL;\n\nBOOL dbOpened = (sqlite3_open_v2(path.UTF8String, &readOnlyDB, SQLITE_OPEN_READONLY | SQLITE_OPEN_WAL, NULL) == SQLITE_OK);\n\nsqlite3_exec(readOnlyDB, \"PRAGMA read_uncommitted=1; PRAGMA query_only=1; PRAGMA synchronous=normal;\", NULL, NULL, NULL);\nsqlite3_unicode_init(readOnlyDB);\nsqlite3_busy_timeout(readOnlyDB, 2000)\n\n// I register custom functions here for the connection\n```\n\nAnd this is how I am opening a writer (a single writer exists for a single process):\n\n```objectivec\nCopy\nBOOL dbOpened = (sqlite3_open_v2(path.UTF8String, &dbConnection, SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, NULL) == SQLITE_OK);\n\nsqlite3_exec(dbConnectLine truncated
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+{"type":"tool_use","timestamp":1788905583878,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"type":"tool","tool":"bash","callID":"call_a0d2d6b4192d406eb80ecc17","state":{"status":"completed","input":{"command":"grep -A 25 -iE \"^#{1,3} |Answer\" s-so-corrupt.md | grep -A 25 -iE \"corrupt an|How to Corrupt|answer\" | head -40","description":"Find accepted answer in SO corruption question","workdir":"/mnt/workdrive/research-stage/research/issue-262/.firecrawl"},"output":"      Detailed answers to any questions you might have](https://stackoverflow.com/help)\n   - [Meta\\\\\n      \\\\\n      Discuss the workings and policies of this site](https://meta.stackoverflow.com/)\n   - [About Us\\\\\n      \\\\\n      Learn more about Stack Overflow the company, and our products](https://stackoverflow.co/)\n\n2. [Site switcher](https://stackexchange.com/)\nA list of all 184 Stack Overflow communities\n\n3. ### [current community](https://stackoverflow.com/)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n--\n[Use comments to ask for more information or suggest improvements. Avoid answering questions in comments.](https://stackoverflow.com/questions/46023203/sqlite-3-wal-mode-multiple-processes-frequently-corrupting-database# \"Use comments to ask for more information or suggest improvements. Avoid answering questions in comments.\") \\| [Show **1** more comment](https://stackoverflow.com/questions/46023203/sqlite-3-wal-mode-multiple-processes-frequently-corrupting-database# \"Expand to show all comments on this post\")\n\n## 1 Answer 1\n\nSorted by:\n[Reset to default](https://stackoverflow.com/questions/46023203/sqlite-3-wal-mode-multiple-processes-frequently-corrupting-database?answertab=scoredesc#tab-top)\n\nHighest score (default)\n\nTrending (recent votes count more)\n\nDate modified (newest first)\n\n","metadata":{"output":"      Detailed answers to any questions you might have](https://stackoverflow.com/help)\n   - [Meta\\\\\n      \\\\\n      Discuss the workings and policies of this site](https://meta.stackoverflow.com/)\n   - [About Us\\\\\n      \\\\\n      Learn more about Stack Overflow the company, and our products](https://stackoverflow.co/)\n\n2. [Site switcher](https://stackexchange.com/)\nA list of all 184 Stack Overflow communities\n\n3. ### [current community](https://stackoverflow.com/)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n--\n[Use comments to ask for more information or suggest improvements. Avoid answering questions in comments.](https://stackoverflow.com/questions/46023203/sqlite-3-wal-mode-multiple-processes-frequently-corrupting-database# \"Use comments to ask for more information or suggest improvements. Avoid answering questions in comments.\") \\| [Show **1** more comment](https://stackoverflow.com/questions/46023203/sqlite-3-wal-mode-multiple-processes-frequently-corrupting-database# \"Expand to show all comments on this post\")\n\n## 1 Answer 1\n\nSorted by:\n[Reset to default](https://stackoverflow.com/questions/46023203/sqlite-3-wal-mode-multiple-processes-frequently-corrupting-database?answertab=scoredesc#tab-top)\n\nHighest score (default)\n\nTrending (recent votes count more)\n\nDate modified (newest first)\n\n","exit":0,"description":"Find accepted answer in SO corruption question","truncated":false},"title":"Find accepted answer in SO corruption question","time":{"start":1788905583874,"end":1788905583876}},"id":"prt_g001a08314ed880016O3yxzWPB","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","messageID":"msg_g001a08314d588001BmS6r6hEM"}}
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+{"type":"step_start","timestamp":1788905591557,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a083151303001kJMSectOk","messageID":"msg_g001a08314f5380019e2Ens960","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","snapshot":"faf6f30f0eb3504220d447d0f5a412239d7589b6","type":"step-start"}}
+{"type":"tool_use","timestamp":1788905593176,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"type":"tool","tool":"bash","callID":"call_9aa7bbb19ae049fea1efd2ba","state":{"status":"completed","input":{"command":"grep -A 40 \"## 1 Answer 1\" s-so-corrupt.md | tail -35","description":"Read SO accepted answer body","workdir":"/mnt/workdrive/research-stage/research/issue-262/.firecrawl"},"output":"\nTrending (recent votes count more)\n\nDate modified (newest first)\n\nDate created (oldest first)\n\n\nThis answer is useful\n\n2\n\nThis answer is not useful\n\nSave this answer.\n\nLoading when this answer was accepted…\n\n[Timeline](https://stackoverflow.com/posts/49579461/timeline)\n\nShow activity on this post.\n\nI have had a similar issue with SQLite3 using Python client on Linux: DB file getting malformed when client crashes while inside an open transaction, while another concurrent process performs read/write query.\n\nThat issue resolved after I added exception handler to make sure transaction closes before crashing process terminates.\n\n[Share](https://stackoverflow.com/a/49579461)\n\nShare a link to this answer\n\nCopy link [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/ \"The current license for this post: CC BY-SA 3.0\")\n\nShort permalink to this answer\n\n[Improve this answer](https://stackoverflow.com/posts/49579461/edit \"\")\n","metadata":{"output":"\nTrending (recent votes count more)\n\nDate modified (newest first)\n\nDate created (oldest first)\n\n\nThis answer is useful\n\n2\n\nThis answer is not useful\n\nSave this answer.\n\nLoading when this answer was accepted…\n\n[Timeline](https://stackoverflow.com/posts/49579461/timeline)\n\nShow activity on this post.\n\nI have had a similar issue with SQLite3 using Python client on Linux: DB file getting malformed when client crashes while inside an open transaction, while another concurrent process performs read/write query.\n\nThat issue resolved after I added exception handler to make sure transaction closes before crashing process terminates.\n\n[Share](https://stackoverflow.com/a/49579461)\n\nShare a link to this answer\n\nCopy link [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/ \"The current license for this post: CC BY-SA 3.0\")\n\nShort permalink to this answer\n\n[Improve this answer](https://stackoverflow.com/posts/49579461/edit \"\")\n","exit":0,"description":"Read SO accepted answer body","truncated":false},"title":"Read SO accepted answer body","time":{"start":1788905593172,"end":1788905593175}},"id":"prt_g001a083151304001Yk3UhP4bD","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","messageID":"msg_g001a08314f5380019e2Ens960"}}
+{"type":"step_finish","timestamp":1788905593198,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a083151958001a4RPLPIft","reason":"tool-calls","snapshot":"87d88058f3d28832df4234795c8997ad06635c53","messageID":"msg_g001a08314f5380019e2Ens960","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","type":"step-finish","tokens":{"total":49482,"input":393,"output":65,"reasoning":0,"cache":{"write":0,"read":49024}},"cost":0}}
+{"type":"step_start","timestamp":1788905599306,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a083153149001Gg4u23dcl","messageID":"msg_g001a0831519940014fuQoOyZT","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","snapshot":"beac9ddc7adc19d056f915a66647c6a62a8100e1","type":"step-start"}}
+{"type":"text","timestamp":1788905682363,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a08315314a001vJ1fs08C4","messageID":"msg_g001a0831519940014fuQoOyZT","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","type":"text","text":"I have enough adversarial evidence. Let me write the `adversarial.json` artifact now.","time":{"start":1788905599306,"end":1788905682360}}}
+{"type":"tool_use","timestamp":1788905682366,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"type":"tool","tool":"write","callID":"call_c90b0654cc9f4bcea797ca87","state":{"status":"completed","input":{"content":"{\n  \"process_id\": \"research-262-r1\",\n  \"issue\": 262,\n  \"round\": 1,\n  \"stage\": \"ADVERSARIAL\",\n  \"title\": \"sqlite WAL performance in concurrent Python applications (acceptance-test question, repo-specific)\",\n  \"method_note\": \"New searches this stage (6 firecrawl queries, 4 full-page scrapes) targeted EXCLUSIVELY at counter-evidence to the emerging preferred approach inferred from DEFINE + INWARD + OUTWARD_READING: 'WAL mode + per-connection PRAGMA stack (busy_timeout, synchronous=NORMAL) + BEGIN IMMEDIATE + retry, validated by a pytest(-benchmark) acceptance test over Rune's multi-process topology.' Sources S1-S11 from OUTWARD_READING are referenced by ID; new adversarial sources are A1-A7. No advocacy for the preferred approach is included, per stage contract.\",\n  \"preferred_approach_under_attack\": \"Enable WAL on Rune's SQLite databases; apply a hardened PRAGMA stack (busy_timeout, synchronous=NORMAL, wal_autocheckpoint) on every fresh per-call connection; use BEGIN IMMEDIATE for known-write transactions; retry on SQLITE_BUSY; validate with a pytest-based multi-process acceptance test (pytest-benchmark for perf assertions) asserting checkpoint progress after stale-reader release.\",\n  \"attacks\": [\n    {\n      \"id\": \"X1\",\n      \"target\": \"Core premise: WAL improves Rune's concurrency/performance\",\n      \"attack\": \"WAL does not help Rune's actual bottleneck and may regress writes. (a) WAL adds an extra copy of every committed page (write amplification): commits go to the WAL AND must later be copied back to the main DB by checkpoints, so write throughput can be LOWER than journal_mode=DELETE for insert-heavy workloads (A2 reddit r/sqlite; A3 sqlite.org/forum 117c91891cf7ac15 'WAL is about concurrency, not speed'). (b) OUTWARD_READING's own S3 found WAL did NOT raise the concurrent-write ceiling (~500 simultaneous inserts failed identically with and without WAL, O8) — the repo's own workload (per-call fresh connections writing, I2/I4) is exactly the write-heavy multi-writer case WAL cannot scale: exactly one writer at a time (S1/O1). (c) S4's production incident (O9) shows multi-process writers on shared storage losing committed orders even in WAL. If Rune's pain is writer/writer contention, WAL is not the treatment and the acceptance test built around WAL success criteria measures the wrong thing.\",\n      \"severity\": \"HIGH\",\n      \"sources\": [\"A2\", \"A3\", \"S3/O8\", \"S1/O1\", \"S4/O9\"]\n    },\n    {\n      \"id\": \"X2\",\n      \"target\": \"busy_timeout as the primary SQLITE_BUSY mitigation\",\n      \"attack\": \"busy_timeout has documented holes that retry logic alone does not patch. (a) In deferred transactions, a read that upgrades to write later gets SQLITE_BUSY IMMEDIATELY, ignoring busy_timeout entirely — the classic fix is BEGIN IMMEDIATE for known-write transactions (A4 berthub.eu, confirmed by sqlite.org forum + Simon Willison notes; also HN 45781519). This contradicts any design that applies busy_timeout and expects writers to queue: only BEGIN IMMEDIATE transactions actually wait. (b) S6's diagnostic runbook: PASSIVE checkpoints ALWAYS return busy=0 — a monitoring/assertion scheme reading the busy column will systematically report 'no contention' during starvation. (c) WAL checkpoints bypass the busy handler in some paths: concurrent checkpoint attempts return SQLITE_BUSY without invoking the busy handler at all (S2/O6), so connection-level busy_timeout does not help checkpoint coordination; explicit retry-at-app-level is mandatory, not optional. The preferred approach as stated ('set busy_timeout, retry') is insufficient; the test must distinguish deferred-upgrade BUSY (immediate, un-timed) from writer-queue BUSY (timed).\",\n      \"severity\": \"HIGH\",\n      \"sources\": [\"A4\", \"S2/O6\", \"S6/O11\"]\n    },\n    {\n      \"id\": \"X3\",\n      \"target\": \"Per-connection PRAGMA stack + fresh connections per call (Rune's topology, reinforced by S8/O14)\",\n      \"attack\": \"The fresh-connection-per-call pattern is itself the cost center, and the preferred approach bakes it in rather than questioning it. Connections are expensive (they correspond to opening the file); reopening per call has measurable overhead (A5 SO 3747232; HN 44530518 'opening and closing SQLite connections is expensive... reuse is much faster'). A simpler alternative that the preferred approach does not consider: a single dedicated DB-writer thread fed by a queue (community-standard answer, S11/O18) or a persistent connection/pool per process eliminates BOTH the per-connect PRAGMA stack cost AND the sqlite-vec per-connection extension-load cost (curator.py:695, I3/I5 mapping) that the acceptance test would otherwise just accept as fixLine truncated
+{"type":"step_finish","timestamp":1788905682391,"sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","part":{"id":"prt_g001a0831675be001fphLKBRdV","reason":"tool-calls","snapshot":"790d5870f5536fd57bdfc04ba415bf0229cca1c1","messageID":"msg_g001a0831519940014fuQoOyZT","sessionID":"ses_-ffe5f7cedfc3cffe4Jz3Ie6ag","type":"step-finish","tokens":{"total":53142,"input":225,"output":3445,"reasoning":0,"cache":{"write":0,"read":49472}},"cost":0}}
@@ -0,0 +1,31 @@
+{"type":"step_start","timestamp":1788903183369,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"id":"prt_g001a082f05406001xvHVF7Vb7","messageID":"msg_g001a082efdc65001R24Irp61d","sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","snapshot":"0119ac241b8e376eaada712253a14b1411ab27bd","type":"step-start"}}
+{"type":"text","timestamp":1788903228162,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"id":"prt_g001a082f0f5df001lGozOPGD5","messageID":"msg_g001a082efdc65001R24Irp61d","sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","type":"text","text":"I'll start by searching for a matching skill (required for first query), then ground the queries in the repo's SQLite usage before discovering external prior art.","time":{"start":1788903224799,"end":1788903228159}}}
+{"type":"tool_use","timestamp":1788903228165,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"type":"tool","tool":"skill_search","callID":"call_151a6232c2a649fb9e492ac4","state":{"status":"completed","input":{"query":"Action: run outward discovery for a structured research pipeline — generate web search strategies and discover/classify prior-art URLs (no full reading) about SQLite WAL performance in concurrent Python applications for an acceptance-test design question. Input: research contract (issue 262) + repo files (memory_store.py etc). Output: structured stage artifact (outward_discovery.json) with queries, URLs, source-type classification. Audience: downstream research stages."},"output":"{\n  \"status\": \"matched\",\n  \"results\": [\n    {\n      \"skill_id\": \"firecrawl-search\",\n      \"name\": \"firecrawl-search\",\n      \"score\": 0.6096,\n      \"reason\": \"The skill description matches these query terms: research, web, search, discover, full, about, in, source.\"\n    },\n    {\n      \"skill_id\": \"memory-search\",\n      \"name\": \"memory-search\",\n      \"score\": 0.5334,\n      \"reason\": \"The skill description matches these query terms: structured, search, strategie, sqlite, in, memory.\"\n    },\n    {\n      \"skill_id\": \"firecrawl\",\n      \"name\": \"firecrawl\",\n      \"score\": 0.3975,\n      \"reason\": \"The skill description matches these query terms: research, web, search, url, full, in, file.\"\n    }\n  ],\n  \"loaded_skill_id\": null\n}","metadata":{"status":"matched","loadedSkillID":null,"truncated":false},"title":"Found 3 skills","time":{"start":1788903228161,"end":1788903228163}},"id":"prt_g001a082f10274001VfAqCXWK9","sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","messageID":"msg_g001a082efdc65001R24Irp61d"}}
+{"type":"step_finish","timestamp":1788903228189,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"id":"prt_g001a082f10305001UrwWXzt6c","reason":"tool-calls","snapshot":"409b142aeb170991e250def4f3711ffd0803fa79","messageID":"msg_g001a082efdc65001R24Irp61d","sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","type":"step-finish","tokens":{"total":30594,"input":28952,"output":130,"reasoning":1448,"cache":{"write":0,"read":64}},"cost":0}}
+{"type":"step_start","timestamp":1788903234481,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"id":"prt_g001a082f11bae001KZCRtQpLy","messageID":"msg_g001a082f10342001npUI8NT0Y","sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","snapshot":"551a9d7dd7ff42ac1cc5be317a2f71dd23243eff","type":"step-start"}}
+{"type":"text","timestamp":1788903245947,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"id":"prt_g001a082f13f5c001fSD55yT4b","messageID":"msg_g001a082f10342001npUI8NT0Y","sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","type":"text","text":"No exact skill match (firecrawl-search is a partial hit — useful for the actual web searching). This is a stage in an orchestrated research process, so I'll proceed stage-wise: first ground the queries in the repo's actual SQLite usage, then discover external prior-art URLs.","time":{"start":1788903243612,"end":1788903245944}}}
+{"type":"tool_use","timestamp":1788903245989,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"type":"tool","tool":"grep","callID":"call_aab53a19a4a54f3da2071401","state":{"status":"completed","input":{"include":"*.py","path":"src/rune","pattern":"sqlite|WAL|journal_mode|busy_timeout|PRAGMA"},"output":"Found 135 matches (showing first 100)\n/mnt/workdrive/research-stage/src/rune/rune_tui.py:\n  Line 189:     elif \"sqlite\" in error_msg.lower() or \"OperationalError\" in error_type:\n\n\n/mnt/workdrive/research-stage/src/rune/canary_gitea_automation.py:\n  Line 207:         \"PRAGMA integrity_check\" in restore_script\n\n\n/mnt/workdrive/research-stage/src/rune/memory_store.py:\n  Line 5: file running sqlite-vec (dense vectors) + FTS5 (BM25) side by side.\n\n  Line 26: Run under ~/.venvs/memory/bin/python3 (has sqlite-vec).\n\n  Line 34: import sqlite3\n\n  Line 98:     cols = {row[1] for row in db.execute(\"PRAGMA table_info(entries)\")}\n\n  Line 119:     db = sqlite3.connect(target)\n\n  Line 120:     db.row_factory = sqlite3.Row\n\n  Line 122:     import sqlite_vec\n\n  Line 124:     sqlite_vec.load(db)\n\n  Line 212:     cols = {r[1] for r in db.execute(\"PRAGMA table_info(entries)\")}\n\n  Line 232:     ccols = {r[1] for r in db.execute(\"PRAGMA table_info(chunks)\")}\n\n  Line 1513:     # sqlite-vec rowid = sqlite rowid of the chunks table row.\n\n\n/mnt/workdrive/research-stage/src/rune/warm_router.py:\n  Line 76:     import sqlite3\n\n  Line 77:     db = sqlite3.connect(STORE_DB)\n\n  Line 105:     import sqlite3\n\n  Line 108:         db = sqlite3.connect(STORE_DB)\n\n  Line 123:     import sqlite3\n\n  Line 126:         db = sqlite3.connect(STORE_DB)\n\n  Line 147:     import sqlite3\n\n  Line 155:             db = sqlite3.connect(f\"file:{STORE_DB}?mode=ro\", uri=True)\n\n  Line 193:     import sqlite3\n\n  Line 194:     return sqlite3.connect(f\"file:{STORE_DB}?mode=ro\", uri=True)\n\n  Line 276:         import sqlite3\n\n  Line 278:         db = sqlite3.connect(STORE_DB)\n\n  Line 306:             dbw = sqlite3.connect(STORE_DB)\n\n  Line 684:         import sqlite3\n\n  Line 685:         db = sqlite3.connect(f\"file:{STORE_DB}?mode=ro\", uri=True)\n\n  Line 854:         import sqlite3\n\n  Line 855:         db = sqlite3.connect(f\"file:{STORE_DB}?mode=ro\", uri=True)\n\n  Line 932:         import sqlite3\n\n  Line 933:         db = sqlite3.connect(STORE_DB)\n\n  Line 935:             db.row_factory = sqlite3.Row\n\n\n/mnt/workdrive/research-stage/src/rune/shard_manager.py:\n  Line 7: Each shard has its own FTS5 + sqlite-vec index for fast retrieval.\n\n  Line 16: import sqlite3\n\n  Line 55:         db = sqlite3.connect(shard_path)\n\n  Line 57:         import sqlite_vec\n\n  Line 59:         sqlite_vec.load(db)  # #26: entries_vec virtual table needs the extension per connection\n\n  Line 121:     def get_shard(self, topic: str) -> sqlite3.Connection:\n\n  Line 124:         #26 defect fix: virtual tables (entries_vec) require the sqlite-vec\n\n  Line 132:         db = sqlite3.connect(shard_path)\n\n  Line 133:         db.row_factory = sqlite3.Row\n\n  Line 135:         import sqlite_vec\n\n  Line 137:         sqlite_vec.load(db)\n\n  Line 164:                 db = sqlite3.connect(path)\n\n\n/mnt/workdrive/research-stage/src/rune/sleep_time.py:\n  Line 22: import sqlite3\n\n  Line 78:         return sqlite3.connect(f\"file:{DB}?mode=ro\", uri=True)\n\n  Line 79:     except sqlite3.Error as e:\n\n  Line 495:         db = sqlite3.connect(f\"file:{DB}?mode=ro\", uri=True)\n\n  Line 497:             db.row_factory = sqlite3.Row\n\n\n/mnt/workdrive/research-stage/src/rune/canary_native.py:\n  Line 94:     \"memory_store\": [],  # Skip connect test due to sqlite_vec dependency\n\n\n/mnt/workdrive/research-stage/src/rune/curator.py:\n  Line 31: import sqlite3\n\n  Line 132:         db = sqlite3.connect(f\"file:{STORE_DB}?mode=ro\", uri=True)\n\n  Line 147:         db = sqlite3.connect(f\"file:{STORE_DB}?mode=ro\", uri=True)\n\n  Line 173:         db = sqlite3.connect(f\"file:{STORE_DB}?mode=ro\", uri=True)\n\n  Line 216:         import sqlite3\n\n  Line 217:         db = sqlite3.connect(f\"file:{STORE_DB}?mode=ro\", uri=True)\n\n  Line 241:         import sqlite3\n\n  Line 242:         db = sqlite3.connect(f\"file:{STORE_DB}?mode=ro\", uri=True)\n\n  Line 258:         import sqlite3\n\n  Line 260:         db = sqlite3.connect(STORE_DB)\n\n  Line 695:     for scalability (eliminates Python startup + sqlite-vec load per call).\"\"\"\n\n\n/mnt/workdrive/research-stage/src/rune/task_gate.py:\n  Line 22: import sqlite3\n\n  Line 41:     db = sqlite3.connect(DB_PATH)\n\n  Line 43:         db.row_factory = sqlite3.Row\n\n  Line 44:         db.execute(\"PRAGMA journal_mode=WAL\")\n\n\n/mnt/workdrive/research-stage/src/rune/voice_sync.py:\n  Line 17: import sqlite3\n\n  Line 49:     db = sqlite3.connect(STORE_DB)\n\n  Line 50:     db.row_factory = sqlite3.Row\n\n\n/mnt/workdrive/research-stage/src/rune/Line truncated
+{"type":"tool_use","timestamp":1788903246023,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"type":"tool","tool":"bash","callID":"call_34d5091ca5f34be9979eb3f5","state":{"status":"completed","input":{"command":"git log --oneline -5 2>/dev/null; ls src/rune/ | head -30","description":"Show recent commits and rune module files"},"output":"83ea89c feat(research): OUTWARD_DISCOVERY executor — real MiMo discovery with structured artifact\nb8280ae merge master\nd4a4222 feat(research): stage-trigger boundary executor — one event = one stage, idempotency guard, no self-walking\nd568705 chore(research): record local backend execution evidence (DEFINE+INWARD completed, tree on master)\n2c8d33e research: persist tree after OUTWARD_DISCOVERY (issue #261, round 1)\nabstraction.py\nattention_capsule.py\naudit_ledger.py\nauto_context.py\nauto_tasks.py\nbehavior.py\nbuild_mode.py\ncache.py\ncanary_cognitive_strata.py\ncanary_context_broker.py\ncanary_conversation_state.py\ncanary_full_system.py\ncanary_gitea_automation.py\ncanary_gitea_delegation.py\ncanary_gitea_pipeline.py\ncanary_memory_synthesis.py\ncanary_native.py\ncanary_orchestration_foundation.py\ncanary_p0_04.py\ncanary_p0_05.py\ncanary_p0_07.py\ncanary_p1_01.py\ncanary_p1_02.py\ncanary_p1_03.py\ncanary_p1_06.py\ncanary_p1_07.py\ncanary_query_memory.py\ncanary_resource_authority.py\ncanary_schema_migration.py\ncanary_surface_parity.py\n","metadata":{"output":"83ea89c feat(research): OUTWARD_DISCOVERY executor — real MiMo discovery with structured artifact\nb8280ae merge master\nd4a4222 feat(research): stage-trigger boundary executor — one event = one stage, idempotency guard, no self-walking\nd568705 chore(research): record local backend execution evidence (DEFINE+INWARD completed, tree on master)\n2c8d33e research: persist tree after OUTWARD_DISCOVERY (issue #261, round 1)\nabstraction.py\nattention_capsule.py\naudit_ledger.py\nauto_context.py\nauto_tasks.py\nbehavior.py\nbuild_mode.py\ncache.py\ncanary_cognitive_strata.py\ncanary_context_broker.py\ncanary_conversation_state.py\ncanary_full_system.py\ncanary_gitea_automation.py\ncanary_gitea_delegation.py\ncanary_gitea_pipeline.py\ncanary_memory_synthesis.py\ncanary_native.py\ncanary_orchestration_foundation.py\ncanary_p0_04.py\ncanary_p0_05.py\ncanary_p0_07.py\ncanary_p1_01.py\ncanary_p1_02.py\ncanary_p1_03.py\ncanary_p1_06.py\ncanary_p1_07.py\ncanary_query_memory.py\ncanary_resource_authority.py\ncanary_schema_migration.py\ncanary_surface_parity.py\n","exit":0,"description":"Show recent commits and rune module files","truncated":false},"title":"Show recent commits and rune module files","time":{"start":1788903246016,"end":1788903246021}},"id":"prt_g001a082f1483b001SPeX3blQ7","sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","messageID":"msg_g001a082f10342001npUI8NT0Y"}}
+{"type":"step_finish","timestamp":1788903246046,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"id":"prt_g001a082f148c6001rCQxolP2Y","reason":"tool-calls","snapshot":"20518245669477e96756cf8ce7b4844f1927bd5e","messageID":"msg_g001a082f10342001npUI8NT0Y","sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","type":"step-finish","tokens":{"total":29946,"input":362,"output":136,"reasoning":456,"cache":{"write":0,"read":28992}},"cost":0}}
+{"type":"step_start","timestamp":1788903252725,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"id":"prt_g001a082f162f2001nV0h8jUp9","messageID":"msg_g001a082f148fe001NFQTZ4js3","sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","snapshot":"89cba376d777fea3a20bca71c56c15fe52f6cbab","type":"step-start"}}
+{"type":"text","timestamp":1788903276041,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"id":"prt_g001a082f1b0fd0017Xbi2hRrk","messageID":"msg_g001a082f148fe001NFQTZ4js3","sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","type":"text","text":"Grounding established: the repo opens many short-lived `sqlite3.connect` calls per process (warm_router, curator, sleep_time, self_improve…), some `mode=ro`, some RW, with `PRAGMA journal_mode=WAL` in task_gate.py — a classic multi-process concurrent SQLite setup. Now I'll discover external prior art via web searches (titles/snippets only — no full-source reading).","time":{"start":1788903272701,"end":1788903276039}}}
+{"type":"tool_use","timestamp":1788903276847,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"type":"tool","tool":"webfetch","callID":"call_540d371acf984f73a3b5a8bc","state":{"status":"completed","input":{"format":"markdown","url":"https://duckduckgo.com/html/?q=sqlite+WAL+concurrency+python+%22database+is+locked%22+busy_timeout"},"output":"     sqlite WAL concurrency python \"database is locked\" busy\\_timeout at DuckDuckGo         \n\n[](/html/ \"DuckDuckGo\")\n\n \n\nAll Regions Argentina Australia Austria Belgium (fr) Belgium (nl) Brazil Bulgaria Canada (en) Canada (fr) Catalonia Chile China Colombia Croatia Czech Republic Denmark Estonia Finland France Germany Greece Hong Kong Hungary Iceland India (en) Indonesia (en) Ireland Israel (en) Italy Japan Korea Latvia Lithuania Malaysia (en) Mexico Netherlands New Zealand Norway Pakistan (en) Peru Philippines (en) Poland Portugal Romania Russia Saudi Arabia Singapore Slovakia Slovenia South Africa Spain (ca) Spain (es) Sweden Switzerland (de) Switzerland (fr) Taiwan Thailand (en) Turkey US (English) US (Spanish) Ukraine United Kingdom Vietnam (en)\n\nAny Time Past Day Past Week Past Month Past Year\n\n## [SQLite Error: Database Is Locked (Fix Guide) | AI2SQL](//duckduckgo.com/l/?uddg=https%3A%2F%2Fbuilder.ai2sql.io%2Fblog%2Fsqlite%2Derror%2Ddatabase%2Dis%2Dlocked&rut=72b2c51c06f2dc17b127e8661b8b4d88e9dad78c1e4b09a165d93ffb5a467d6f)\n\n [![](//external-content.duckduckgo.com/ip3/builder.ai2sql.io.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fbuilder.ai2sql.io%2Fblog%2Fsqlite%2Derror%2Ddatabase%2Dis%2Dlocked&rut=72b2c51c06f2dc17b127e8661b8b4d88e9dad78c1e4b09a165d93ffb5a467d6f)[builder.ai2sql.io/blog/sqlite-error-database-is-locked](//duckduckgo.com/l/?uddg=https%3A%2F%2Fbuilder.ai2sql.io%2Fblog%2Fsqlite%2Derror%2Ddatabase%2Dis%2Dlocked&rut=72b2c51c06f2dc17b127e8661b8b4d88e9dad78c1e4b09a165d93ffb5a467d6f)     2026-03-12T00:00:00.0000000\n\n[Fix **SQLite** **database is locked** error. Covers **WAL** mode, **busy** **timeout,** concurrent access patterns, and write locking strategies.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fbuilder.ai2sql.io%2Fblog%2Fsqlite%2Derror%2Ddatabase%2Dis%2Dlocked&rut=72b2c51c06f2dc17b127e8661b8b4d88e9dad78c1e4b09a165d93ffb5a467d6f)\n\n## [Fix SQLite SQLITE\\_BUSY (5): Database is Locked — pgref.dev](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.errcodes.dev%2Fsqlite%2Fsqlite%2Dbusy%2Ddatabase%2Dlocked&rut=1b59fa219eb649c5f5397191e952d0bf69861c1bf45e443f1b9f406de19736b3)\n\n [![](//external-content.duckduckgo.com/ip3/www.errcodes.dev.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.errcodes.dev%2Fsqlite%2Fsqlite%2Dbusy%2Ddatabase%2Dlocked&rut=1b59fa219eb649c5f5397191e952d0bf69861c1bf45e443f1b9f406de19736b3)[www.errcodes.dev/sqlite/sqlite-busy-database-locked](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.errcodes.dev%2Fsqlite%2Fsqlite%2Dbusy%2Ddatabase%2Dlocked&rut=1b59fa219eb649c5f5397191e952d0bf69861c1bf45e443f1b9f406de19736b3)\n\n[Why this works **busy\\_timeout** instructs the **SQLite** library to sleep and retry the lock acquisition for up to the specified number of milliseconds before returning SQLITE\\_BUSY. The **Python** sqlite3 module exposes this as the timeout parameter on connect (). Fix 2 Enable **WAL** mode for better read/write **concurrency**](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.errcodes.dev%2Fsqlite%2Fsqlite%2Dbusy%2Ddatabase%2Dlocked&rut=1b59fa219eb649c5f5397191e952d0bf69861c1bf45e443f1b9f406de19736b3)\n\n## [SQLite Database Is Locked: Fix SQLITE\\_BUSY — sqlfmt](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.sqlfmt.app%2Fblog%2Fsqlite%2Ddatabase%2Dis%2Dlocked&rut=64dfbb75de48eb2c9043ecfad7d207343bd394e8194f516da17a2c4a79527dfb)\n\n [![](//external-content.duckduckgo.com/ip3/www.sqlfmt.app.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.sqlfmt.app%2Fblog%2Fsqlite%2Ddatabase%2Dis%2Dlocked&rut=64dfbb75de48eb2c9043ecfad7d207343bd394e8194f516da17a2c4a79527dfb)[www.sqlfmt.app/blog/sqlite-database-is-locked](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.sqlfmt.app%2Fblog%2Fsqlite%2Ddatabase%2Dis%2Dlocked&rut=64dfbb75de48eb2c9043ecfad7d207343bd394e8194f516da17a2c4a79527dfb)     2026-08-26T00:00:00.0000000\n\n[**SQLite** \"**database is locked**\" usually means a connection needs a lock that another connection holds. Keep write transactions short, configure an appropriate **busy** **timeout,** use **WAL** for the right workload, and distinguish SQLITE\\_BUSY from SQLITE\\_LOCKED before changing files.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.sqlfmt.app%2Fblog%2Fsqlite%2Ddatabase%2Dis%2Dlocked&rut=64dfbb75de48eb2c9043ecfad7d207343bd394e8194f516da17a2c4a79527dfb)\n\n## [SQLite Errors: Common Issues and How to Fix Them | OpenPython](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.openpython.org%2Farticles%2Fsqlite%2Derrors&rut=5eed8069c82b1b98b6f05c414256885f536e39b8fc94b6d37b186175e93806af)\n\n [![](//external-content.duckduckgo.com/ip3/www.openpython.org.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.openpython.org%2Line truncated
+{"type":"tool_use","timestamp":1788903276899,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"type":"tool","tool":"webfetch","callID":"call_ab73f82b594d41b292df2d4d","state":{"status":"completed","input":{"format":"markdown","url":"https://duckduckgo.com/html/?q=sqlite+wal+checkpoint+starvation+stall+production+issues"},"output":"     sqlite wal checkpoint starvation stall production issues at DuckDuckGo         \n\n[](/html/ \"DuckDuckGo\")\n\n \n\nAll Regions Argentina Australia Austria Belgium (fr) Belgium (nl) Brazil Bulgaria Canada (en) Canada (fr) Catalonia Chile China Colombia Croatia Czech Republic Denmark Estonia Finland France Germany Greece Hong Kong Hungary Iceland India (en) Indonesia (en) Ireland Israel (en) Italy Japan Korea Latvia Lithuania Malaysia (en) Mexico Netherlands New Zealand Norway Pakistan (en) Peru Philippines (en) Poland Portugal Romania Russia Saudi Arabia Singapore Slovakia Slovenia South Africa Spain (ca) Spain (es) Sweden Switzerland (de) Switzerland (fr) Taiwan Thailand (en) Turkey US (English) US (Spanish) Ukraine United Kingdom Vietnam (en)\n\nAny Time Past Day Past Week Past Month Past Year\n\n## [SQLite WAL Checkpoint Starvation Diagnostics - GitHub](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Fmouadja02%2Fskills%2Fblob%2Fmain%2Fskills%2Fdatabases%2Fsqlite%2Dwal%2Dcheckpoint%2Dstarvation%2Ddiagnostics%2FSKILL.md&rut=3a7cd954aad27179c5bfb9a81193ca49dcde52ac19429f6ceaa3000bd7c9c186)\n\n [![](//external-content.duckduckgo.com/ip3/github.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Fmouadja02%2Fskills%2Fblob%2Fmain%2Fskills%2Fdatabases%2Fsqlite%2Dwal%2Dcheckpoint%2Dstarvation%2Ddiagnostics%2FSKILL.md&rut=3a7cd954aad27179c5bfb9a81193ca49dcde52ac19429f6ceaa3000bd7c9c186)[github.com/mouadja02/skills/blob/main/skills/databases/sqlite-wal-checkpoint-starvation-diagnostics/SKILL.md](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Fmouadja02%2Fskills%2Fblob%2Fmain%2Fskills%2Fdatabases%2Fsqlite%2Dwal%2Dcheckpoint%2Dstarvation%2Ddiagnostics%2FSKILL.md&rut=3a7cd954aad27179c5bfb9a81193ca49dcde52ac19429f6ceaa3000bd7c9c186)\n\n[**SQLite** **WAL** **Checkpoint** **Starvation** Diagnostics Diagnose a **WAL** that cannot reset without deleting journal files or turning a **production** incident into a write outage. Separate copying frames into the database from resetting/truncating the **WAL**: a **checkpoint** can make progress while an older reader still prevents reset.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Fmouadja02%2Fskills%2Fblob%2Fmain%2Fskills%2Fdatabases%2Fsqlite%2Dwal%2Dcheckpoint%2Dstarvation%2Ddiagnostics%2FSKILL.md&rut=3a7cd954aad27179c5bfb9a81193ca49dcde52ac19429f6ceaa3000bd7c9c186)\n\n## [sqlite-wal-checkpoint-starvation... | Agent Skill | SkillsMP](//duckduckgo.com/l/?uddg=https%3A%2F%2Fskillsmp.com%2Fcreators%2Fmouadja02%2Fskills%2Fskills%2Ddatabases%2Dsqlite%2Dwal%2Dcheckpoint%2Dstarvation%2Ddiagnostics&rut=37dd3bcbd593649ade0551473dbe4a9b88f2567fb6ff1c73be72bee0ee7a9935)\n\n [![](//external-content.duckduckgo.com/ip3/skillsmp.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fskillsmp.com%2Fcreators%2Fmouadja02%2Fskills%2Fskills%2Ddatabases%2Dsqlite%2Dwal%2Dcheckpoint%2Dstarvation%2Ddiagnostics&rut=37dd3bcbd593649ade0551473dbe4a9b88f2567fb6ff1c73be72bee0ee7a9935)[skillsmp.com/creators/mouadja02/skills/skills-databases-sqlite-wal-checkpoint-starvation-diagnostics](//duckduckgo.com/l/?uddg=https%3A%2F%2Fskillsmp.com%2Fcreators%2Fmouadja02%2Fskills%2Fskills%2Ddatabases%2Dsqlite%2Dwal%2Dcheckpoint%2Dstarvation%2Ddiagnostics&rut=37dd3bcbd593649ade0551473dbe4a9b88f2567fb6ff1c73be72bee0ee7a9935)\n\n[**SQLite** **WAL** **Checkpoint** **Starvation** Diagnostics Diagnose a **WAL** that cannot reset without deleting journal files or turning a **production** incident into a write outage. Separate copying frames into the database from resetting/truncating the **WAL**: a **checkpoint** can make progress while an older reader still prevents reset.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fskillsmp.com%2Fcreators%2Fmouadja02%2Fskills%2Fskills%2Ddatabases%2Dsqlite%2Dwal%2Dcheckpoint%2Dstarvation%2Ddiagnostics&rut=37dd3bcbd593649ade0551473dbe4a9b88f2567fb6ff1c73be72bee0ee7a9935)\n\n## [necat101/sqlite-deployment-safety-lab - GitHub](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Fnecat101%2Fsqlite%2Ddeployment%2Dsafety%2Dlab&rut=bfcf24a4914c580db8a85ae9d010d12bcb2cca98c6c5c4226637954256613bff)\n\n [![](//external-content.duckduckgo.com/ip3/github.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Fnecat101%2Fsqlite%2Ddeployment%2Dsafety%2Dlab&rut=bfcf24a4914c580db8a85ae9d010d12bcb2cca98c6c5c4226637954256613bff)[github.com/necat101/sqlite-deployment-safety-lab](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Fnecat101%2Fsqlite%2Ddeployment%2Dsafety%2Dlab&rut=bfcf24a4914c580db8a85ae9d010d12bcb2cca98c6c5c4226637954256613bff)\n\n[Reproduces **SQLite** **production** **issues** from HN #47637353: **WAL** mode, concurrent writers, overlaLine truncated
+{"type":"tool_use","timestamp":1788903276927,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"type":"tool","tool":"webfetch","callID":"call_d169e719907349819ec4fbed","state":{"status":"completed","input":{"format":"markdown","url":"https://duckduckgo.com/html/?q=pytest+benchmark+sqlite+wal+concurrency+acceptance+test+python"},"output":"     pytest benchmark sqlite wal concurrency acceptance test python at DuckDuckGo         \n\n[](/html/ \"DuckDuckGo\")\n\n \n\nAll Regions Argentina Australia Austria Belgium (fr) Belgium (nl) Brazil Bulgaria Canada (en) Canada (fr) Catalonia Chile China Colombia Croatia Czech Republic Denmark Estonia Finland France Germany Greece Hong Kong Hungary Iceland India (en) Indonesia (en) Ireland Israel (en) Italy Japan Korea Latvia Lithuania Malaysia (en) Mexico Netherlands New Zealand Norway Pakistan (en) Peru Philippines (en) Poland Portugal Romania Russia Saudi Arabia Singapore Slovakia Slovenia South Africa Spain (ca) Spain (es) Sweden Switzerland (de) Switzerland (fr) Taiwan Thailand (en) Turkey US (English) US (Spanish) Ukraine United Kingdom Vietnam (en)\n\nAny Time Past Day Past Week Past Month Past Year\n\n## [GitHub - joedougherty/sqlite3\\_concurrent\\_writes\\_test\\_suite: Simultating ...](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Fjoedougherty%2Fsqlite3_concurrent_writes_test_suite&rut=6060ce1a5a76b88f2f09752b5d717339b0e806de7c8844503f91e1cbcb563a4a)\n\n [![](//external-content.duckduckgo.com/ip3/github.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Fjoedougherty%2Fsqlite3_concurrent_writes_test_suite&rut=6060ce1a5a76b88f2f09752b5d717339b0e806de7c8844503f91e1cbcb563a4a)[github.com/joedougherty/sqlite3\\_concurrent\\_writes\\_test\\_suite](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Fjoedougherty%2Fsqlite3_concurrent_writes_test_suite&rut=6060ce1a5a76b88f2f09752b5d717339b0e806de7c8844503f91e1cbcb563a4a)\n\n[**pytest** is a testing framework that is delightfully easy to get started with. Each of my **tests** will be in the form of a function that lives in test\\_parallel\\_writes.py.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Fjoedougherty%2Fsqlite3_concurrent_writes_test_suite&rut=6060ce1a5a76b88f2f09752b5d717339b0e806de7c8844503f91e1cbcb563a4a)\n\n## [pytest-benchmark · PyPI](//duckduckgo.com/l/?uddg=https%3A%2F%2Fpypi.org%2Fproject%2Fpytest%2Dbenchmark%2F&rut=49e0ab8ac98a60bb6d218af2c4efac66e303b5840a823aac179f3790d8f20272)\n\n [![](//external-content.duckduckgo.com/ip3/pypi.org.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fpypi.org%2Fproject%2Fpytest%2Dbenchmark%2F&rut=49e0ab8ac98a60bb6d218af2c4efac66e303b5840a823aac179f3790d8f20272)[pypi.org/project/pytest-benchmark/](//duckduckgo.com/l/?uddg=https%3A%2F%2Fpypi.org%2Fproject%2Fpytest%2Dbenchmark%2F&rut=49e0ab8ac98a60bb6d218af2c4efac66e303b5840a823aac179f3790d8f20272)\n\n[A \\`\\`**pytest**\\`\\` fixture for benchmarking code. It will group the **tests** into rounds that are calibrated to the chosen timer.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fpypi.org%2Fproject%2Fpytest%2Dbenchmark%2F&rut=49e0ab8ac98a60bb6d218af2c4efac66e303b5840a823aac179f3790d8f20272)\n\n## [How To Measure And Improve Code Efficiency with Pytest Benchmark (The ...](//duckduckgo.com/l/?uddg=https%3A%2F%2Fpytest%2Dwith%2Deric.com%2Fpytest%2Dbest%2Dpractices%2Fpytest%2Dbenchmark%2F&rut=c300a7b03495c67cc7fb735ab1688776d9e06acb45947fedb463ce1e2415a5af)\n\n [![](//external-content.duckduckgo.com/ip3/pytest-with-eric.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fpytest%2Dwith%2Deric.com%2Fpytest%2Dbest%2Dpractices%2Fpytest%2Dbenchmark%2F&rut=c300a7b03495c67cc7fb735ab1688776d9e06acb45947fedb463ce1e2415a5af)[pytest-with-eric.com/pytest-best-practices/pytest-benchmark/](//duckduckgo.com/l/?uddg=https%3A%2F%2Fpytest%2Dwith%2Deric.com%2Fpytest%2Dbest%2Dpractices%2Fpytest%2Dbenchmark%2F&rut=c300a7b03495c67cc7fb735ab1688776d9e06acb45947fedb463ce1e2415a5af)\n\n[A clear understanding of the need to **benchmark** your code especially when writing custom algorithms or complex data transformations. Knowledge and application of **Pytest** **Benchmark** to perform **benchmark** analysis of your code How to analyze **benchmark** results to choose the best algorithm for code snippets.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fpytest%2Dwith%2Deric.com%2Fpytest%2Dbest%2Dpractices%2Fpytest%2Dbenchmark%2F&rut=c300a7b03495c67cc7fb735ab1688776d9e06acb45947fedb463ce1e2415a5af)\n\n## [PCritchfield/pytest-sqlite-poc - GitHub](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2FPCritchfield%2Fpytest%2Dsqlite%2Dpoc&rut=96a9f51f0d9075040f93974e1f636f180a943be1088625182f5451358f91dd0c)\n\n [![](//external-content.duckduckgo.com/ip3/github.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2FPCritchfield%2Fpytest%2Dsqlite%2Dpoc&rut=96a9f51f0d9075040f93974e1f636f180a943be1088625182f5451358f91dd0c)[github.com/PCritchfield/pytest-sqlite-poc](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2FPCritchfield%2Fpytest%2Dsqlite%2DpocLine truncated
+{"type":"tool_use","timestamp":1788903276960,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"type":"tool","tool":"webfetch","callID":"call_9a1a7101098a4aa3afe7804d","state":{"status":"completed","input":{"format":"markdown","url":"https://duckduckgo.com/html/?q=sqlite+wal+mode+performance+benchmark+concurrent+readers+single+writer"},"output":"     sqlite wal mode performance benchmark concurrent readers single writer at DuckDuckGo         \n\n[](/html/ \"DuckDuckGo\")\n\n \n\nAll Regions Argentina Australia Austria Belgium (fr) Belgium (nl) Brazil Bulgaria Canada (en) Canada (fr) Catalonia Chile China Colombia Croatia Czech Republic Denmark Estonia Finland France Germany Greece Hong Kong Hungary Iceland India (en) Indonesia (en) Ireland Israel (en) Italy Japan Korea Latvia Lithuania Malaysia (en) Mexico Netherlands New Zealand Norway Pakistan (en) Peru Philippines (en) Poland Portugal Romania Russia Saudi Arabia Singapore Slovakia Slovenia South Africa Spain (ca) Spain (es) Sweden Switzerland (de) Switzerland (fr) Taiwan Thailand (en) Turkey US (English) US (Spanish) Ukraine United Kingdom Vietnam (en)\n\nAny Time Past Day Past Week Past Month Past Year\n\n## [Write-Ahead Logging - SQLite](//duckduckgo.com/l/?uddg=https%3A%2F%2Fsqlite.org%2Fwal.html&rut=bae257989ce224addb49313bd5584a36eda61b7cdf92a9815dcf32b6aafea932)\n\n [![](//external-content.duckduckgo.com/ip3/sqlite.org.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fsqlite.org%2Fwal.html&rut=bae257989ce224addb49313bd5584a36eda61b7cdf92a9815dcf32b6aafea932)[sqlite.org/wal.html](//duckduckgo.com/l/?uddg=https%3A%2F%2Fsqlite.org%2Fwal.html&rut=bae257989ce224addb49313bd5584a36eda61b7cdf92a9815dcf32b6aafea932)     2026-08-25T00:00:00.0000000\n\n[The bug only affects databases in **WAL** **mode** when there are two or more database connections open on the same file, in separate threads or processes, and when those two connections attempt to write or checkpoint at the same instant. The bug is a data race with tight timing constraints and that requires an unusual usage pattern.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fsqlite.org%2Fwal.html&rut=bae257989ce224addb49313bd5584a36eda61b7cdf92a9815dcf32b6aafea932)\n\n## [Connection Pooling Strategies · SQLite Hardening](//duckduckgo.com/l/?uddg=https%3A%2F%2Fproductionhardening.org%2Fwal%2Doptimization%2Dconcurrency%2Dtuning%2Fconnection%2Dpooling%2Dstrategies%2F&rut=28cd525934d47b9d069294878d027363e2bca9c60b061dd58a0c891e22e65d69)\n\n [![](//external-content.duckduckgo.com/ip3/productionhardening.org.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fproductionhardening.org%2Fwal%2Doptimization%2Dconcurrency%2Dtuning%2Fconnection%2Dpooling%2Dstrategies%2F&rut=28cd525934d47b9d069294878d027363e2bca9c60b061dd58a0c891e22e65d69)[productionhardening.org/wal-optimization-concurrency-tuning/connection-pooling-strategies/](//duckduckgo.com/l/?uddg=https%3A%2F%2Fproductionhardening.org%2Fwal%2Doptimization%2Dconcurrency%2Dtuning%2Fconnection%2Dpooling%2Dstrategies%2F&rut=28cd525934d47b9d069294878d027363e2bca9c60b061dd58a0c891e22e65d69)\n\n[Application threads many **concurrent** checkout / return Bounded connection pool fixed maxsize · queue-guarded **Writer** connection **single** · serialized by mutex **Reader** connection 1 **Reader** connection 2 **Reader** connection N **SQLite** **WAL** **mode** BEGIN IMMEDIATE exclusive write lock snapshot read × N A connection also has a lifecycle inside the pool — idle in the queue, checked out and in use, then ...](//duckduckgo.com/l/?uddg=https%3A%2F%2Fproductionhardening.org%2Fwal%2Doptimization%2Dconcurrency%2Dtuning%2Fconnection%2Dpooling%2Dstrategies%2F&rut=28cd525934d47b9d069294878d027363e2bca9c60b061dd58a0c891e22e65d69)\n\n## [Optimizing SQLite for Production: WAL Mode, Concurrency, and VFS Layers](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.nitin%2Drachabathuni.com%2Fblog%2Fsqlite%2Dproduction%2Doptimization%2Dwal%2Dmode%2Dconcurrency&rut=d6505e6b25a773f649853e92ec36402b9cbbd89fea5913ba8f881378a3d02ce3)\n\n [![](//external-content.duckduckgo.com/ip3/www.nitin-rachabathuni.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.nitin%2Drachabathuni.com%2Fblog%2Fsqlite%2Dproduction%2Doptimization%2Dwal%2Dmode%2Dconcurrency&rut=d6505e6b25a773f649853e92ec36402b9cbbd89fea5913ba8f881378a3d02ce3)[www.nitin-rachabathuni.com/blog/sqlite-production-optimization-wal-mode-concurrency](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.nitin%2Drachabathuni.com%2Fblog%2Fsqlite%2Dproduction%2Doptimization%2Dwal%2Dmode%2Dconcurrency&rut=d6505e6b25a773f649853e92ec36402b9cbbd89fea5913ba8f881378a3d02ce3)     2026-07-29T00:00:00.0000000\n\n[Learn how to scale **SQLite** for high-**performance** production environments by optimizing Write-Ahead Logging (**WAL**), concurrency handling, and custom VFS layers.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fwww.nitin%2Drachabathuni.com%2Fblog%2Fsqlite%2Dproduction%2Doptimization%2Dwal%2Dmode%2Dconcurrency&rut=d6505e6b25a773f649853e92ec36402b9cbbd89fea5913ba8fLine truncated
+{"type":"step_finish","timestamp":1788903276986,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"id":"prt_g001a082f1c19f001FvRiYNJsO","reason":"tool-calls","snapshot":"a20b5acc12e2b0d2d65126021cd56bc8372ee3cd","messageID":"msg_g001a082f148fe001NFQTZ4js3","sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","type":"step-finish","tokens":{"total":34977,"input":4738,"output":257,"reasoning":990,"cache":{"write":0,"read":28992}},"cost":0}}
+{"type":"step_start","timestamp":1788903280967,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"id":"prt_g001a082f1d144001aGc1uUciT","messageID":"msg_g001a082f1c1e4001wr6lXZkeq","sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","snapshot":"97e4d9cd338f9dd0595231eec734b299d12bc7cb","type":"step-start"}}
+{"type":"text","timestamp":1788903291058,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"id":"prt_g001a082f1ed3c001VU65DmPqx","messageID":"msg_g001a082f1c1e4001wr6lXZkeq","sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","type":"text","text":"Strong first batch — official SQLite WAL docs, checkpoint-starvation prior art, and a pytest concurrent-writes test suite repo. Now covering the Python-specific and engineering-blog dimensions.","time":{"start":1788903288124,"end":1788903291054}}}
+{"type":"tool_use","timestamp":1788903291786,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"type":"tool","tool":"webfetch","callID":"call_0efb0034c340488994f4333f","state":{"status":"completed","input":{"format":"markdown","url":"https://duckduckgo.com/html/?q=aiosqlite+concurrent+writers+WAL+github+issue"},"output":"     aiosqlite concurrent writers WAL github issue at DuckDuckGo         \n\n[](/html/ \"DuckDuckGo\")\n\n \n\nAll Regions Argentina Australia Austria Belgium (fr) Belgium (nl) Brazil Bulgaria Canada (en) Canada (fr) Catalonia Chile China Colombia Croatia Czech Republic Denmark Estonia Finland France Germany Greece Hong Kong Hungary Iceland India (en) Indonesia (en) Ireland Israel (en) Italy Japan Korea Latvia Lithuania Malaysia (en) Mexico Netherlands New Zealand Norway Pakistan (en) Peru Philippines (en) Poland Portugal Romania Russia Saudi Arabia Singapore Slovakia Slovenia South Africa Spain (ca) Spain (es) Sweden Switzerland (de) Switzerland (fr) Taiwan Thailand (en) Turkey US (English) US (Spanish) Ukraine United Kingdom Vietnam (en)\n\nAny Time Past Day Past Week Past Month Past Year\n\n## [Fix: aiosqlite Not Working — Single Writer, WAL Mode, Row Factory, and ...](//duckduckgo.com/l/?uddg=https%3A%2F%2Ffixdevs.com%2Fblog%2Faiosqlite%2Dnot%2Dworking%2F&rut=bf903c864db4fd5d9e0a68bc132890cbb9e7ab676bf547b80ca37c2b6e65c879)\n\n [![](//external-content.duckduckgo.com/ip3/fixdevs.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Ffixdevs.com%2Fblog%2Faiosqlite%2Dnot%2Dworking%2F&rut=bf903c864db4fd5d9e0a68bc132890cbb9e7ab676bf547b80ca37c2b6e65c879)[fixdevs.com/blog/aiosqlite-not-working/](//duckduckgo.com/l/?uddg=https%3A%2F%2Ffixdevs.com%2Fblog%2Faiosqlite%2Dnot%2Dworking%2F&rut=bf903c864db4fd5d9e0a68bc132890cbb9e7ab676bf547b80ca37c2b6e65c879)     2026-05-20T00:00:00.0000000\n\n[How to fix Python **aiosqlite** errors — database is locked, **WAL** mode for **concurrent** reads, foreign\\_keys PRAGMA, row factory for dict-like rows, connection per request vs pool, datetime detect\\_types, and FastAPI integration.](//duckduckgo.com/l/?uddg=https%3A%2F%2Ffixdevs.com%2Fblog%2Faiosqlite%2Dnot%2Dworking%2F&rut=bf903c864db4fd5d9e0a68bc132890cbb9e7ab676bf547b80ca37c2b6e65c879)\n\n## [Enabling \\`WAL\\` mode at scale increases failures and timeouts · Issue ...](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Fomnilib%2Faiosqlite%2Fissues%2F382&rut=106bdf692059fcca3caf97b66ba7518188e9a9ae18b52e5f5687fd1ec8d293f1)\n\n [![](//external-content.duckduckgo.com/ip3/github.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Fomnilib%2Faiosqlite%2Fissues%2F382&rut=106bdf692059fcca3caf97b66ba7518188e9a9ae18b52e5f5687fd1ec8d293f1)[github.com/omnilib/aiosqlite/issues/382](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Fomnilib%2Faiosqlite%2Fissues%2F382&rut=106bdf692059fcca3caf97b66ba7518188e9a9ae18b52e5f5687fd1ec8d293f1)     2026-03-27T00:00:00.0000000\n\n[I'm using Piccolo with SQLite and have run quite a few tests with Bombardier. You can recreate this test with this app and this setup. Findings SQLite writes one at a time and blocks reads: **WAL** mode should help here! However **aiosqlite** fails when the concurrency is high (100 **concurrent** writes). **WAL** mode seems to work fine with less than -c 75 connections **WAL** mode at scale (-c 100) makes success ...](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Fomnilib%2Faiosqlite%2Fissues%2F382&rut=106bdf692059fcca3caf97b66ba7518188e9a9ae18b52e5f5687fd1ec8d293f1)\n\n## [Issues · omnilib/aiosqlite · GitHub](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Fomnilib%2Faiosqlite%2Fissues&rut=d595673d1ba06c82a904aba2f7600fa6b13535915e5574055e516b45db087328)\n\n [![](//external-content.duckduckgo.com/ip3/github.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Fomnilib%2Faiosqlite%2Fissues&rut=d595673d1ba06c82a904aba2f7600fa6b13535915e5574055e516b45db087328)[github.com/omnilib/aiosqlite/issues](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Fomnilib%2Faiosqlite%2Fissues&rut=d595673d1ba06c82a904aba2f7600fa6b13535915e5574055e516b45db087328)\n\n[asyncio bridge to the standard sqlite3 module. Contribute to omnilib/**aiosqlite** development by creating an account on **GitHub**.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Fomnilib%2Faiosqlite%2Fissues&rut=d595673d1ba06c82a904aba2f7600fa6b13535915e5574055e516b45db087328)\n\n## [python - How to make concurrent writes in SQLite with FastAPI ...](//duckduckgo.com/l/?uddg=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F79707043%2Fhow%2Dto%2Dmake%2Dconcurrent%2Dwrites%2Din%2Dsqlite%2Dwith%2Dfastapi%2Dsqlalchemy%2Dwithout%2Ddatab&rut=3f7aa17aa9520870b6c6c24c67a3d10e765bae898c6da1a46acfbb084cbdb7d8)\n\n [![](//external-content.duckduckgo.com/ip3/stackoverflow.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F79707043%2Fhow%2Dto%2Dmake%2Dconcurrent%2Dwrites%2Din%2Dsqlite%2Dwith%2Dfastapi%2Dsqlalchemy%2Dwithout%2Ddatab&rut=3f7aa17aa952087Line truncated
+{"type":"tool_use","timestamp":1788903291818,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"type":"tool","tool":"webfetch","callID":"call_3fe35225b25c4c1fb91df278","state":{"status":"completed","input":{"format":"markdown","url":"https://duckduckgo.com/html/?q=python+sqlite3+documentation+timeout+parameter+check_same_thread+threads"},"output":"     python sqlite3 documentation timeout parameter check\\_same\\_thread threads at DuckDuckGo         \n\n[](/html/ \"DuckDuckGo\")\n\n \n\nAll Regions Argentina Australia Austria Belgium (fr) Belgium (nl) Brazil Bulgaria Canada (en) Canada (fr) Catalonia Chile China Colombia Croatia Czech Republic Denmark Estonia Finland France Germany Greece Hong Kong Hungary Iceland India (en) Indonesia (en) Ireland Israel (en) Italy Japan Korea Latvia Lithuania Malaysia (en) Mexico Netherlands New Zealand Norway Pakistan (en) Peru Philippines (en) Poland Portugal Romania Russia Saudi Arabia Singapore Slovakia Slovenia South Africa Spain (ca) Spain (es) Sweden Switzerland (de) Switzerland (fr) Taiwan Thailand (en) Turkey US (English) US (Spanish) Ukraine United Kingdom Vietnam (en)\n\nAny Time Past Day Past Week Past Month Past Year\n\n## [sqlite3 — DB-API 2.0 interface for SQLite databases - Python](//duckduckgo.com/l/?uddg=https%3A%2F%2Fdocs.python.org%2F3%2Flibrary%2Fsqlite3.html&rut=a3abeada0d2a6527efda6964fd867ad61770ded3bee02d9f832b5ddf34a7d129)\n\n [![](//external-content.duckduckgo.com/ip3/docs.python.org.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fdocs.python.org%2F3%2Flibrary%2Fsqlite3.html&rut=a3abeada0d2a6527efda6964fd867ad61770ded3bee02d9f832b5ddf34a7d129)[docs.python.org/3/library/sqlite3.html](//duckduckgo.com/l/?uddg=https%3A%2F%2Fdocs.python.org%2F3%2Flibrary%2Fsqlite3.html&rut=a3abeada0d2a6527efda6964fd867ad61770ded3bee02d9f832b5ddf34a7d129)     2026-09-08T00:00:00.0000000\n\n[In this tutorial, you will create a database of Monty **Python** movies using basic sqlite3functionality. It assumes a fundamental understanding of database concepts, including cursorsand transactions. First, we need to create a new database and open a database connection to allow sqlite3to work with it. Call **sqlite3**.connect()to create a connection to the database tutorial.dbin the current working ...](//duckduckgo.com/l/?uddg=https%3A%2F%2Fdocs.python.org%2F3%2Flibrary%2Fsqlite3.html&rut=a3abeada0d2a6527efda6964fd867ad61770ded3bee02d9f832b5ddf34a7d129)\n\n## [sqlite - Python sqlite3 and concurrency - Stack Overflow](//duckduckgo.com/l/?uddg=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F393554%2Fpython%2Dsqlite3%2Dand%2Dconcurrency&rut=cb7f39f4b8ce3fa19044d0b400bbdadc4cca8acc12df23e2ec6ad0d43690bc97)\n\n [![](//external-content.duckduckgo.com/ip3/stackoverflow.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F393554%2Fpython%2Dsqlite3%2Dand%2Dconcurrency&rut=cb7f39f4b8ce3fa19044d0b400bbdadc4cca8acc12df23e2ec6ad0d43690bc97)[stackoverflow.com/questions/393554/python-sqlite3-and-concurrency](//duckduckgo.com/l/?uddg=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F393554%2Fpython%2Dsqlite3%2Dand%2Dconcurrency&rut=cb7f39f4b8ce3fa19044d0b400bbdadc4cca8acc12df23e2ec6ad0d43690bc97)\n\n[I guess this means that another **thread** has mydatabase.db open through a **sqlite3** connection and has locked it. If I put this line of code in the main program and pass the connection object (conn) to each **thread**, I get a ProgrammingError, saying that SQLite objects created in a **thread** can only be used in that same **thread**.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F393554%2Fpython%2Dsqlite3%2Dand%2Dconcurrency&rut=cb7f39f4b8ce3fa19044d0b400bbdadc4cca8acc12df23e2ec6ad0d43690bc97)\n\n## [sqlite3 — DB-API 2.0 interface for SQLite databases — Python ...](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgetdocs.org%2FPython%2Fdocs%2F3.7%2Flibrary%2Fsqlite3&rut=4a6fcf3c3b254f50fed479ea4bf0439a1219f88e0f456161ee86d1c825b7a91a)\n\n [![](//external-content.duckduckgo.com/ip3/getdocs.org.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgetdocs.org%2FPython%2Fdocs%2F3.7%2Flibrary%2Fsqlite3&rut=4a6fcf3c3b254f50fed479ea4bf0439a1219f88e0f456161ee86d1c825b7a91a)[getdocs.org/Python/docs/3.7/library/sqlite3](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgetdocs.org%2FPython%2Fdocs%2F3.7%2Flibrary%2Fsqlite3&rut=4a6fcf3c3b254f50fed479ea4bf0439a1219f88e0f456161ee86d1c825b7a91a)\n\n[By default, the **sqlite3** module uses its Connection class for the connect call. You can, however, subclass the Connection class and make connect () use your class instead by providing your class for the factory **parameter**. Consult the section SQLite and **Python** types of this manual for details.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgetdocs.org%2FPython%2Fdocs%2F3.7%2Flibrary%2Fsqlite3&rut=4a6fcf3c3b254f50fed479ea4bf0439a1219f88e0f456161ee86d1c825b7a91a)\n\n## [12.6. sqlite3 — DB-API 2.0 interface for SQLite databases](//duckduckgo.com/l/?uddg=https%3A%2F%2Fdocumentation.hLine truncated
+{"type":"tool_use","timestamp":1788903291918,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"type":"tool","tool":"webfetch","callID":"call_a94ffca3604043df9b885806","state":{"status":"completed","input":{"format":"markdown","url":"https://duckduckgo.com/html/?q=python+multiprocessing+sqlite+WAL+same+database+best+practices"},"output":"     python multiprocessing sqlite WAL same database best practices at DuckDuckGo         \n\n[](/html/ \"DuckDuckGo\")\n\n \n\nAll Regions Argentina Australia Austria Belgium (fr) Belgium (nl) Brazil Bulgaria Canada (en) Canada (fr) Catalonia Chile China Colombia Croatia Czech Republic Denmark Estonia Finland France Germany Greece Hong Kong Hungary Iceland India (en) Indonesia (en) Ireland Israel (en) Italy Japan Korea Latvia Lithuania Malaysia (en) Mexico Netherlands New Zealand Norway Pakistan (en) Peru Philippines (en) Poland Portugal Romania Russia Saudi Arabia Singapore Slovakia Slovenia South Africa Spain (ca) Spain (es) Sweden Switzerland (de) Switzerland (fr) Taiwan Thailand (en) Turkey US (English) US (Spanish) Ukraine United Kingdom Vietnam (en)\n\nAny Time Past Day Past Week Past Month Past Year\n\n## [python - SQLite3 and Multiprocessing - Stack Overflow](//duckduckgo.com/l/?uddg=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F6969820%2Fsqlite3%2Dand%2Dmultiprocessing&rut=921218d71d9b7e3594b59b3640eff5925602fb23c6a31227f787375c6eaa5ab1)\n\n [![](//external-content.duckduckgo.com/ip3/stackoverflow.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F6969820%2Fsqlite3%2Dand%2Dmultiprocessing&rut=921218d71d9b7e3594b59b3640eff5925602fb23c6a31227f787375c6eaa5ab1)[stackoverflow.com/questions/6969820/sqlite3-and-multiprocessing](//duckduckgo.com/l/?uddg=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F6969820%2Fsqlite3%2Dand%2Dmultiprocessing&rut=921218d71d9b7e3594b59b3640eff5925602fb23c6a31227f787375c6eaa5ab1)\n\n[I noticed that sqlite3 isn´t really capable nor reliable when i use it inside a **multiprocessing** enviroment. Each process tries to write some data into the **same** **database**, so that a connection is use...](//duckduckgo.com/l/?uddg=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F6969820%2Fsqlite3%2Dand%2Dmultiprocessing&rut=921218d71d9b7e3594b59b3640eff5925602fb23c6a31227f787375c6eaa5ab1)\n\n## [sqlite-best-practices: Configure WAL mode and checkpoint timing for ...](//duckduckgo.com/l/?uddg=https%3A%2F%2Fskills.rest%2Fskill%2Fsqlite%2Dbest%2Dpractices&rut=428f6f307f15fe30bf375a193672bdea62650dd4baf917a887ea88bc3bfa44be)\n\n [![](//external-content.duckduckgo.com/ip3/skills.rest.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fskills.rest%2Fskill%2Fsqlite%2Dbest%2Dpractices&rut=428f6f307f15fe30bf375a193672bdea62650dd4baf917a887ea88bc3bfa44be)[skills.rest/skill/sqlite-best-practices](//duckduckgo.com/l/?uddg=https%3A%2F%2Fskills.rest%2Fskill%2Fsqlite%2Dbest%2Dpractices&rut=428f6f307f15fe30bf375a193672bdea62650dd4baf917a887ea88bc3bfa44be)\n\n[Use the **sqlite**\\-**best**\\-**practices** skill to effortlessly configure **wal** mode and checkpoint timing for **sqlite** **multiprocessing** in **python**. A reliable, executable skill for Claude, contributed by randalmurphal, designed for Software Engineering workflows.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fskills.rest%2Fskill%2Fsqlite%2Dbest%2Dpractices&rut=428f6f307f15fe30bf375a193672bdea62650dd4baf917a887ea88bc3bfa44be)\n\n## [concurrency - SQLite Concurrent Access - Stack Overflow](//duckduckgo.com/l/?uddg=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F4060772%2Fsqlite%2Dconcurrent%2Daccess&rut=42bb9a6a27e35e3f8db91c8187647cac51b198c54f27ca89ec1e05f852353c0e)\n\n [![](//external-content.duckduckgo.com/ip3/stackoverflow.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F4060772%2Fsqlite%2Dconcurrent%2Daccess&rut=42bb9a6a27e35e3f8db91c8187647cac51b198c54f27ca89ec1e05f852353c0e)[stackoverflow.com/questions/4060772/sqlite-concurrent-access](//duckduckgo.com/l/?uddg=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F4060772%2Fsqlite%2Dconcurrent%2Daccess&rut=42bb9a6a27e35e3f8db91c8187647cac51b198c54f27ca89ec1e05f852353c0e)\n\n[Does SQLite3 safely handle concurrent access by multiple processes reading/writing from the **same** DB? Are there any platform exceptions to that?](//duckduckgo.com/l/?uddg=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F4060772%2Fsqlite%2Dconcurrent%2Daccess&rut=42bb9a6a27e35e3f8db91c8187647cac51b198c54f27ca89ec1e05f852353c0e)\n\n## [Simulating concurrent writes to sqlite3 with multiprocessing and pytest](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Fjoedougherty%2Fsqlite3_concurrent_writes_test_suite&rut=6060ce1a5a76b88f2f09752b5d717339b0e806de7c8844503f91e1cbcb563a4a)\n\n [![](//external-content.duckduckgo.com/ip3/github.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fgithub.com%2Fjoedougherty%2Fsqlite3_concurrent_writes_test_suite&rut=6060ce1a5a76b88f2f09752b5d717339b0e806de7c8844503f91e1cbcb563a4a)[github.com/joedougherty/sqliLine truncated
+{"type":"tool_use","timestamp":1788903291928,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"type":"tool","tool":"webfetch","callID":"call_b270e50d6f3d4f99b8612370","state":{"status":"completed","input":{"format":"markdown","url":"https://duckduckgo.com/html/?q=sqlite+pragma+busy_timeout+synchronous+NORMAL+WAL+documentation"},"output":"     sqlite pragma busy\\_timeout synchronous NORMAL WAL documentation at DuckDuckGo         \n\n[](/html/ \"DuckDuckGo\")\n\n \n\nAll Regions Argentina Australia Austria Belgium (fr) Belgium (nl) Brazil Bulgaria Canada (en) Canada (fr) Catalonia Chile China Colombia Croatia Czech Republic Denmark Estonia Finland France Germany Greece Hong Kong Hungary Iceland India (en) Indonesia (en) Ireland Israel (en) Italy Japan Korea Latvia Lithuania Malaysia (en) Mexico Netherlands New Zealand Norway Pakistan (en) Peru Philippines (en) Poland Portugal Romania Russia Saudi Arabia Singapore Slovakia Slovenia South Africa Spain (ca) Spain (es) Sweden Switzerland (de) Switzerland (fr) Taiwan Thailand (en) Turkey US (English) US (Spanish) Ukraine United Kingdom Vietnam (en)\n\nAny Time Past Day Past Week Past Month Past Year\n\n## [Pragma statements supported by SQLite](//duckduckgo.com/l/?uddg=https%3A%2F%2Fsqlite.org%2Fpragma.html&rut=c91f575326108e60352e4177c330c96e4848a20065b7ffadb1a47cebf70fe7fa)\n\n [![](//external-content.duckduckgo.com/ip3/sqlite.org.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fsqlite.org%2Fpragma.html&rut=c91f575326108e60352e4177c330c96e4848a20065b7ffadb1a47cebf70fe7fa)[sqlite.org/pragma.html](//duckduckgo.com/l/?uddg=https%3A%2F%2Fsqlite.org%2Fpragma.html&rut=c91f575326108e60352e4177c330c96e4848a20065b7ffadb1a47cebf70fe7fa)     2026-06-04T00:00:00.0000000\n\n[This **pragma** is an alternative to the sqlite3\\_busy\\_timeout () C-language interface which is made available as a **pragma** for use with language bindings that do not provide direct access to sqlite3\\_busy\\_timeout ().](//duckduckgo.com/l/?uddg=https%3A%2F%2Fsqlite.org%2Fpragma.html&rut=c91f575326108e60352e4177c330c96e4848a20065b7ffadb1a47cebf70fe7fa)\n\n## [Runnable SQLite Docs: PRAGMA Settings | Coddy](//duckduckgo.com/l/?uddg=https%3A%2F%2Fcoddy.tech%2Fdocs%2Fsqlite%2Fpragma%2Dsettings&rut=e77f60895ac51a409e0e2717e5e4a04ae7d8e8498d5814248f910f89524bfdd1)\n\n [![](//external-content.duckduckgo.com/ip3/coddy.tech.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fcoddy.tech%2Fdocs%2Fsqlite%2Fpragma%2Dsettings&rut=e77f60895ac51a409e0e2717e5e4a04ae7d8e8498d5814248f910f89524bfdd1)[coddy.tech/docs/sqlite/pragma-settings](//duckduckgo.com/l/?uddg=https%3A%2F%2Fcoddy.tech%2Fdocs%2Fsqlite%2Fpragma%2Dsettings&rut=e77f60895ac51a409e0e2717e5e4a04ae7d8e8498d5814248f910f89524bfdd1)     2026-05-02T00:00:00.0000000\n\n[A practical guide to **SQLite** **PRAGMA** settings: journal\\_mode=WAL, synchronous=NORMAL, foreign\\_keys, **busy\\_timeout**, cache\\_size, mmap\\_size, and when to run optimize.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fcoddy.tech%2Fdocs%2Fsqlite%2Fpragma%2Dsettings&rut=e77f60895ac51a409e0e2717e5e4a04ae7d8e8498d5814248f910f89524bfdd1)\n\n## [Write-Ahead Logging - SQLite](//duckduckgo.com/l/?uddg=https%3A%2F%2Fsqlite.org%2Fwal.html&rut=bae257989ce224addb49313bd5584a36eda61b7cdf92a9815dcf32b6aafea932)\n\n [![](//external-content.duckduckgo.com/ip3/sqlite.org.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fsqlite.org%2Fwal.html&rut=bae257989ce224addb49313bd5584a36eda61b7cdf92a9815dcf32b6aafea932)[sqlite.org/wal.html](//duckduckgo.com/l/?uddg=https%3A%2F%2Fsqlite.org%2Fwal.html&rut=bae257989ce224addb49313bd5584a36eda61b7cdf92a9815dcf32b6aafea932)     2026-08-25T00:00:00.0000000\n\n[(Writers sync the **WAL** on every transaction commit if **PRAGMA** **synchronous** is set to FULL but omit this sync if **PRAGMA** **synchronous** is set to **NORMAL**.) On the other hand, read performance deteriorates as the **WAL** file grows in size since each reader must check the **WAL** file for the content and the time needed to check the **WAL** file is proportional to ...](//duckduckgo.com/l/?uddg=https%3A%2F%2Fsqlite.org%2Fwal.html&rut=bae257989ce224addb49313bd5584a36eda61b7cdf92a9815dcf32b6aafea932)\n\n## [Pragma statements supported by SQLite](//duckduckgo.com/l/?uddg=http%3A%2F%2Fwww3.sqlite.org%2Fmatrix%2Fpragma.html&rut=6abb3a2c8fa7c355956a25d36e8e7216b6b9919337bf0febbc3a6ee8d0a01c3c)\n\n [![](//external-content.duckduckgo.com/ip3/www3.sqlite.org.ico)](//duckduckgo.com/l/?uddg=http%3A%2F%2Fwww3.sqlite.org%2Fmatrix%2Fpragma.html&rut=6abb3a2c8fa7c355956a25d36e8e7216b6b9919337bf0febbc3a6ee8d0a01c3c)[www3.sqlite.org/matrix/pragma.html](//duckduckgo.com/l/?uddg=http%3A%2F%2Fwww3.sqlite.org%2Fmatrix%2Fpragma.html&rut=6abb3a2c8fa7c355956a25d36e8e7216b6b9919337bf0febbc3a6ee8d0a01c3c)\n\n[\\] This **pragma** is an alternative to the sqlite3\\_busy\\_timeout () C-language interface which is made available as a **pragma** for use with language bindings that do not provide direct access to sqlite3\\_busy\\_timeout (Line truncated
+{"type":"step_finish","timestamp":1788903291955,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"id":"prt_g001a082f1fc17001O15taEbkF","reason":"tool-calls","snapshot":"fe9aca8c731d5b24896f29f4c777aedbad468551","messageID":"msg_g001a082f1c1e4001wr6lXZkeq","sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","type":"step-finish","tokens":{"total":54631,"input":20288,"output":199,"reasoning":416,"cache":{"write":0,"read":33728}},"cost":0}}
+{"type":"step_start","timestamp":1788903357604,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"id":"prt_g001a082f2fca1001lAtujSilR","messageID":"msg_g001a082f1fc7a001AxYz2h4wT","sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","snapshot":"3802667ebb6e7ad6b12685ae4fa68c4695571c21","type":"step-start"}}
+{"type":"text","timestamp":1788903369345,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"id":"prt_g001a082f321a1001B9HHBbEqO","messageID":"msg_g001a082f1fc7a001AxYz2h4wT","sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","type":"text","text":"Excellent coverage — the aiosqlite#382 issue (WAL fails at high concurrency) and the joedougherty pytest concurrent-writes suite are directly relevant prior art. One final batch: framework-level documentation (Django/SQLAlchemy) which the repo's stack could adopt patterns from.","time":{"start":1788903367073,"end":1788903369341}}}
+{"type":"tool_use","timestamp":1788903370212,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"type":"tool","tool":"webfetch","callID":"call_d14c5e8a934a469995efa5f0","state":{"status":"completed","input":{"format":"markdown","url":"https://duckduckgo.com/html/?q=django+documentation+sqlite+concurrency+database+is+locked+timeout"},"output":"     django documentation sqlite concurrency database is locked timeout at DuckDuckGo         \n\n[](/html/ \"DuckDuckGo\")\n\n \n\nAll Regions Argentina Australia Austria Belgium (fr) Belgium (nl) Brazil Bulgaria Canada (en) Canada (fr) Catalonia Chile China Colombia Croatia Czech Republic Denmark Estonia Finland France Germany Greece Hong Kong Hungary Iceland India (en) Indonesia (en) Ireland Israel (en) Italy Japan Korea Latvia Lithuania Malaysia (en) Mexico Netherlands New Zealand Norway Pakistan (en) Peru Philippines (en) Poland Portugal Romania Russia Saudi Arabia Singapore Slovakia Slovenia South Africa Spain (ca) Spain (es) Sweden Switzerland (de) Switzerland (fr) Taiwan Thailand (en) Turkey US (English) US (Spanish) Ukraine United Kingdom Vietnam (en)\n\nAny Time Past Day Past Week Past Month Past Year\n\n## [SQLite and database is locked error - ORM - Django Forum](//duckduckgo.com/l/?uddg=https%3A%2F%2Fforum.djangoproject.com%2Ft%2Fsqlite%2Dand%2Ddatabase%2Dis%2Dlocked%2Derror%2F26994&rut=e79552cbffe99b2ffaba736053935780d35e26d668589884f0ac7146669facfe)\n\n [![](//external-content.duckduckgo.com/ip3/forum.djangoproject.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fforum.djangoproject.com%2Ft%2Fsqlite%2Dand%2Ddatabase%2Dis%2Dlocked%2Derror%2F26994&rut=e79552cbffe99b2ffaba736053935780d35e26d668589884f0ac7146669facfe)[forum.djangoproject.com/t/sqlite-and-database-is-locked-error/26994](//duckduckgo.com/l/?uddg=https%3A%2F%2Fforum.djangoproject.com%2Ft%2Fsqlite%2Dand%2Ddatabase%2Dis%2Dlocked%2Derror%2F26994&rut=e79552cbffe99b2ffaba736053935780d35e26d668589884f0ac7146669facfe)\n\n[It would be to see it as an option, along with a documented why someone would consider enabling it. Without it - it's considerably harder to run **Django** on **SQLite** with more than one process/worker, as there's a chance of hitting an immediate \"**database** **is** **locked**\" regardless of the **timeout** setting.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fforum.djangoproject.com%2Ft%2Fsqlite%2Dand%2Ddatabase%2Dis%2Dlocked%2Derror%2F26994&rut=e79552cbffe99b2ffaba736053935780d35e26d668589884f0ac7146669facfe)\n\n## [python - OperationalError: database is locked - Stack Overflow](//duckduckgo.com/l/?uddg=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F3172929%2Foperationalerror%2Ddatabase%2Dis%2Dlocked&rut=a2a0c71aeb8117bab2be33f78ce1f4ce2c7818db3817dad5530bfee62bf6d7e8)\n\n [![](//external-content.duckduckgo.com/ip3/stackoverflow.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F3172929%2Foperationalerror%2Ddatabase%2Dis%2Dlocked&rut=a2a0c71aeb8117bab2be33f78ce1f4ce2c7818db3817dad5530bfee62bf6d7e8)[stackoverflow.com/questions/3172929/operationalerror-database-is-locked](//duckduckgo.com/l/?uddg=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F3172929%2Foperationalerror%2Ddatabase%2Dis%2Dlocked&rut=a2a0c71aeb8117bab2be33f78ce1f4ce2c7818db3817dad5530bfee62bf6d7e8)\n\n[From **Django's** **documentation**: **SQLite** **is** meant to be a lightweight **database**, and thus can't support a high level of **concurrency**. OperationalError: **database** **is** **locked** errors indicate that your application is experiencing more **concurrency** than **sqlite** can handle in default configuration.](//duckduckgo.com/l/?uddg=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F3172929%2Foperationalerror%2Ddatabase%2Dis%2Dlocked&rut=a2a0c71aeb8117bab2be33f78ce1f4ce2c7818db3817dad5530bfee62bf6d7e8)\n\n## [Django + Sqlite: database is locked - Stack Overflow](//duckduckgo.com/l/?uddg=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F28958580%2Fdjango%2Dsqlite%2Ddatabase%2Dis%2Dlocked&rut=78e6043fdd62daf24cfac7ded24f1672597a47a066d03754fa5c35654bb1c765)\n\n [![](//external-content.duckduckgo.com/ip3/stackoverflow.com.ico)](//duckduckgo.com/l/?uddg=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F28958580%2Fdjango%2Dsqlite%2Ddatabase%2Dis%2Dlocked&rut=78e6043fdd62daf24cfac7ded24f1672597a47a066d03754fa5c35654bb1c765)[stackoverflow.com/questions/28958580/django-sqlite-database-is-locked](//duckduckgo.com/l/?uddg=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F28958580%2Fdjango%2Dsqlite%2Ddatabase%2Dis%2Dlocked&rut=78e6043fdd62daf24cfac7ded24f1672597a47a066d03754fa5c35654bb1c765)\n\n[Rewriting your code to reduce **concurrency** and ensure that **database** transactions are short-lived. Increase the default **timeout** value by setting the **timeout** **database** option](//duckduckgo.com/l/?uddg=https%3A%2F%2Fstackoverflow.com%2Fquestions%2F28958580%2Fdjango%2Dsqlite%2Ddatabase%2Dis%2Dlocked&rut=78e6043fdd62daf24cfac7ded24f1672597a47a066d03754fa5c35654bb1c765)\n\n## [Django, SQLite, and Line truncated
+{"type":"tool_use","timestamp":1788903370240,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"type":"tool","tool":"webfetch","callID":"call_907cbdd92b3a4006931cb5c8","state":{"status":"completed","input":{"format":"markdown","url":"https://duckduckgo.com/html/?q=sqlalchemy+sqlite+pysqlite+documentation+concurrency+transactions+%22BEGIN+IMMEDIATE%22"},"output":"     sqlalchemy sqlite pysqlite documentation concurrency transactions \"BEGIN IMMEDIATE\" at DuckDuckGo         \n\n[](/html/ \"DuckDuckGo\")\n\n \n\nAll Regions Argentina Australia Austria Belgium (fr) Belgium (nl) Brazil Bulgaria Canada (en) Canada (fr) Catalonia Chile China Colombia Croatia Czech Republic Denmark Estonia Finland France Germany Greece Hong Kong Hungary Iceland India (en) Indonesia (en) Ireland Israel (en) Italy Japan Korea Latvia Lithuania Malaysia (en) Mexico Netherlands New Zealand Norway Pakistan (en) Peru Philippines (en) Poland Portugal Romania Russia Saudi Arabia Singapore Slovakia Slovenia South Africa Spain (ca) Spain (es) Sweden Switzerland (de) Switzerland (fr) Taiwan Thailand (en) Turkey US (English) US (Spanish) Ukraine United Kingdom Vietnam (en)\n\nAny Time Past Day Past Week Past Month Past Year\n\n# No results found for **sqlalchemy sqlite pysqlite documentation concurrency transactions \"BEGIN IMMEDIATE\"**\n\n**Suggestions**:\n\n-   Check spelling\n-   Try related keywords\n-   Remove unnecessary punctuation\n\n[Feedback](//duckduckgo.com/feedback.html)\n\n![](//duckduckgo.com/t/sl_h)","metadata":{"truncated":false},"title":"https://duckduckgo.com/html/?q=sqlalchemy+sqlite+pysqlite+documentation+concurrency+transactions+%22BEGIN+IMMEDIATE%22 (text/html; charset=UTF-8)","time":{"start":1788903369345,"end":1788903370238}},"id":"prt_g001a082f32a52001EVQ3CUwMr","sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","messageID":"msg_g001a082f1fc7a001AxYz2h4wT"}}
+{"type":"step_finish","timestamp":1788903370268,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"id":"prt_g001a082f32dff001qmsW59uIp","reason":"tool-calls","snapshot":"09103e585487a0cb279e213cd28e1497c9f1e799","messageID":"msg_g001a082f1fc7a001AxYz2h4wT","sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","type":"step-finish","tokens":{"total":72768,"input":43,"output":152,"reasoning":445,"cache":{"write":0,"read":72128}},"cost":0}}
+{"type":"step_start","timestamp":1788903393712,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"id":"prt_g001a082f389af001GV2V17EB3","messageID":"msg_g001a082f32e3f0017vFJk9uAG","sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","snapshot":"fe63c20c156ce39c414b3027034aa4c81ded091c","type":"step-start"}}
+{"type":"text","timestamp":1788903620133,"sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","part":{"id":"prt_g001a082f43494001IEnMQSnKp","messageID":"msg_g001a082f32e3f0017vFJk9uAG","sessionID":"ses_-ffe5f7d1024a3ffe5J13LEwLr","type":"text","text":"Discovery is complete — 10 search queries executed, ~25 distinct URLs found across official docs, GitHub issues/repos, Q&A, and engineering blogs. Composing the stage artifact.\n\n---\n\n# OUTWARD_DISCOVERY Artifact — Issue 262, Round 1\n\n**Contract**: Acceptance test for SQLite WAL performance in concurrent Python applications (repo-specific; rune's memory subsystem: `memory_store.py`, `warm_router.py`, `curator.py`, `auto_tasks.py`, `task_gate.py` — many short-lived `sqlite3.connect` calls, mixed `mode=ro`/RW connections across multiple processes, WAL enabled in `task_gate.py`, FTS5 + sqlite-vec).\n\n## 1. Search strategies\n\n| ID | Strategy | Queries | Targets |\n|----|----------|---------|---------|\n| S1 | Official WAL semantics | `sqlite wal mode performance benchmark concurrent readers single writer`; `sqlite pragma busy_timeout synchronous NORMAL WAL documentation` | sqlite.org docs; grounding for test assertions |\n| S2 | Python binding behavior | `python sqlite3 documentation timeout parameter check_same_thread threads`; `python multiprocessing sqlite WAL same database best practices` | stdlib docs, threads-vs-processes semantics |\n| S3 | Acceptance/perf test prior art | `pytest benchmark sqlite wal concurrency acceptance test python`; `aiosqlite concurrent writers WAL github issue` | test suites, benchmark tooling, known failure thresholds |\n| S4 | Failure modes | `sqlite wal checkpoint starvation stall production issues`; `sqlite WAL concurrency \"database is locked\" busy_timeout` | reproducible failure scenarios to assert against |\n| S5 | Framework precedent | `django documentation sqlite concurrency database is locked timeout`; `sqlalchemy pysqlite BEGIN IMMEDIATE` (no-hit → known-stable URL used) | documented defaults worth mirroring in the acceptance test |\n\n## 2. Discovered sources (classified)\n\n### official_docs (highest read priority)\n- **S1** https://sqlite.org/wal.html — WAL semantics: readers/writers concurrency, checkpointing, synchronous=NORMAL trade-offs, known multi-connection race bug. *Ground truth for what the acceptance test may assert.*\n- **S2** https://sqlite.org/pragma.html — `busy_timeout`, `journal_mode`, `synchronous` definitions (Python's `timeout` param maps to busy_timeout).\n- **S3** https://sqlite.org/c3ref/wal_checkpoint_v2.html — PASSIVE/FULL/RESTART/TRUNCATE checkpoint modes; blocking semantics.\n- **S4** https://docs.python.org/3/library/sqlite3.html — `timeout` param, `check_same_thread`, transaction control.\n- **S5** https://docs.sqlalchemy.org/en/20/dialects/sqlite.html — *(identified as known-stable official URL; query returned no hit)* — pysqlite serializable isolation / BEGIN IMMEDIATE / WAL guidance.\n\n### github_issue / github_repo (direct prior art)\n- **S6** https://github.com/omnilib/aiosqlite/issues/382 — \"Enabling WAL at scale increases failures and timeouts\": WAL fine below ~75 concurrent conns, degrades at 100. **Quantified failure threshold — key prior art for acceptance thresholds.**\n- **S7** https://github.com/joedougherty/sqlite3_concurrent_writes_test_suite — pytest + multiprocessing suite measuring max concurrent 1-record inserts before `database is locked`. **Closest structural template for the repo's acceptance test.**\n- **S8** https://github.com/anze3db/django-sqlite-dblock — repro repo: configure SQLite for multi-worker concurrency (Django context).\n- **S9** https://github.com/necat101/sqlite-deployment-safety-lab — reproduces WAL production issues: concurrent writers, checkpoint starvation, backup safety.\n\n### engineering_blog / deep-dive\n- **S10** https://productionhardening.org/wal-optimization-concurrency-tuning/ (+ subpages: PRAGMA guide, connection-pooling strategies) — claims checkpoint starvation is the most common production WAL failure; per-connection PRAGMA reset pitfall (relevant: repo opens a fresh connection per call).\n- **S11** https://dev.to/lumin-playstar/sqlite-wal-mode-10x-performance-for-python-apps-4ic — Python WAL performance claims (\"10x\"); treat as unverified marketing-grade claim to check against S1/S6.\n- **S12** https://dev.to/odd_background_328/reproduce-sqlite-wal-checkpoint-starvation-with-one-forgotten-reader-4jfo — minimal repro: one stale read transaction starves checkpoints.\n- **S13** https://blog.pecar.me/django-sqlite-dblock/ — Django SQLite lock analysis (transferable diagnosis method).\n\n### q_and_a (community consensus, medium priority)\n- **S14** https://stackoverflow.com/questions/393554/python-sqlite3-and-concurrency — threads + sqlite3 connection sharing (`check_same_thread`).\n- **S15** https://stackoverflow.com/questions/6969820/sqlite3-and-multiprocessing — multiprocessing reliability Line truncated
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@@ -0,0 +1,42 @@
+{"type":"step_start","timestamp":1788905053677,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"id":"prt_g001a0830cddea0011Q08mPxw6","messageID":"msg_g001a0830cb84c001t0NQKcjWr","sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","snapshot":"5e8a5f6e63f1d501a023eb0685f3598f9e43bc6e","type":"step-start"}}
+{"type":"text","timestamp":1788905055386,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"id":"prt_g001a0830cded2001Xfepq6kOf","messageID":"msg_g001a0830cb84c001t0NQKcjWr","sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","type":"text","text":"I'll start by searching for a matching skill, then locate the prior stage artifacts (especially the OUTWARD_DISCOVERY source list I need to read).","time":{"start":1788905053906,"end":1788905055383}}}
+{"type":"tool_use","timestamp":1788905055389,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"type":"tool","tool":"skill_search","callID":"call_913140b299664e50ab3c46c9","state":{"status":"completed","input":{"query":"Read primary external sources (web pages, docs) selected by a prior discovery stage and extract claims with source IDs and limitations for a research pipeline stage about sqlite WAL performance in concurrent Python apps; output structured stage artifact outward_reading.json"},"output":"{\n  \"status\": \"matched\",\n  \"results\": [\n    {\n      \"skill_id\": \"xlsx-official\",\n      \"name\": \"xlsx-official\",\n      \"score\": 0.6403,\n      \"reason\": \"The skill description matches these query terms: read, source, page, doc, pipeline, in, python, artifact.\"\n    },\n    {\n      \"skill_id\": \"firecrawl-agent\",\n      \"name\": \"firecrawl-agent\",\n      \"score\": 0.5299,\n      \"reason\": \"The skill description matches these query terms: page, extract, structured, json.\"\n    },\n    {\n      \"skill_id\": \"firecrawl-search\",\n      \"name\": \"firecrawl-search\",\n      \"score\": 0.5431,\n      \"reason\": \"The skill description matches these query terms: source, web, page, research, about, in.\"\n    }\n  ],\n  \"loaded_skill_id\": null\n}","metadata":{"status":"matched","loadedSkillID":null,"truncated":false},"title":"Found 3 skills","time":{"start":1788905055384,"end":1788905055388}},"id":"prt_g001a0830cded8001LncAzTVam","sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","messageID":"msg_g001a0830cb84c001t0NQKcjWr"}}
+{"type":"tool_use","timestamp":1788905055475,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"type":"tool","tool":"memory","callID":"call_3847cfc8d4cd45b49e28541a","state":{"status":"completed","input":{"operation":"search","query":"OUTWARD_DISCOVERY sqlite WAL issue 262"},"output":"Found 9 matches (BM25-ranked, best first).\nA hit here is authoritative — use it even if a parallel/sibling query returned nothing.\nIf you need the FULL body (snippets are truncated), Read the path.\nIf you need an EXACT literal (a connection string, port, token, full command line, path) and the snippet/body only paraphrases or partially shows it, the curated memory may have dropped the precise form — query the history tool for the original message, which holds it verbatim.\n\n### /home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5f7d1024a3ffe5J13LEwLr/checkpoint.md\nScope: sessions/ses_-ffe5f7d1024a3ffe5J13LEwLr, Type: checkpoint, Score: 27.168\n...<<OUTWARD_DISCOVERY>> stage for <<issue>> <<262>> (research-<<262>>-r1, <<SQLite>> <<WAL>> performance in concurrent Python apps) — repo grounding + 4 discovery searches done, URL inventory captured, <<outward_discovery>>.json artifact pending\n\n# Session checkpoint...\n\n### /home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5f7d08ef0effe7822prgaw/checkpoint.md\nScope: sessions/ses_-ffe5f7d08ef0effe7822prgaw, Type: checkpoint, Score: 25.188\n...OUTWARD_READING for research-<<262>>-r1 (<<issue>> <<262>>: <<SQLite>> <<WAL>> performance under concurrency in Python apps; acceptance-test question). Progress so far:\n\n1. Recovered the <<OUTWARD_DISCOVERY>> source inventory from prior session...\n\n### /home/nick/.local/share/mimocode/memory/projects/add96ab3-25dd-4c38-9fa3-34c01811d081/MEMORY.md\nScope: projects/add96ab3-25dd-4c38-9fa3-34c01811d081, Type: memory, Score: 15.181\n...and `file:...?mode=ro` URI reads) across multiple OS processes; only task_gate.py sets `PRAGMA journal_mode=<<WAL>>` explicitly; <<sqlite>>-vec extension must be loaded per connection (<<issue>> #26 defect fix).\n\n\n### /home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5fc20c77acffeZPFtNS5gw/tasks/T4.7/progress.md\nScope: sessions/ses_-ffe5fc20c77acffeZPFtNS5gw, Type: progress, Score: 9.724\n...Added per-canonical-database-path <<WAL>> activation locks, deadline-bounded retry with exponential backoff for <<SQLite>> `BUSY`/`LOCKED` only, requested busy-timeout restoration, and cleanup of partially initialized connections on failure.\n- tests...\n\n### /home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5fc20c77acffeZPFtNS5gw/checkpoint-task-history.md\nScope: sessions/ses_-ffe5fc20c77acffeZPFtNS5gw, Type: checkpoint, Score: 8.725\n...concurrency and migration re-review\n- 🟡 T25 Reconcile Gitea hardening conflicts with master\n- ✅ T26 Final read-only review of <<SQLite>> runtime fixes\n- ✅ T27 Fix concurrent fresh-path <<WAL>> activation with strict TDD\n\n\n### /home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5fc20c77acffeZPFtNS5gw/tasks/T4.6/progress.md\nScope: sessions/ses_-ffe5fc20c77acffeZPFtNS5gw, Type: progress, Score: 8.351\n...Fixed conversation-store paging and <<SQLite>> initialization, migration, and channel-creation concurrency.\n\n## §2 Subagent intent\nThis subagent was asked to address four code-quality findings in the Rune conversation store using strict...\n\n### /home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5f826d4b3affeptScH2iSt/notes.md\nScope: sessions/ses_-ffe5f826d4b3affeptScH2iSt, Type: free, Score: 8.180\n...Contract compiled from Gitea <<issue>> body.\n- INWARD: 0.03s, no MiMo. Context builder matches keywords → umbrella manifest → source files.\n- Both persisted to Gitea master via contents API.\n- Tree on master: stage=<<OUTWARD>>...\n\n### /home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5f7d7bf30effejatPfIVut/checkpoint.md\nScope: sessions/ses_-ffe5f7d7bf30effejatPfIVut, Type: checkpoint, Score: 6.797\n...an 8-stage research pipeline exists — DEFINE → INWARD → <<OUTWARD_DISCOVERY>> → OUTWARD_READING → ADVERSARIAL → INNOVATION → SYNTHESIS (stage-scoped methodology, from prior session `ses_-ffe5f826d4b3affeptScH2iSt`). Convention: research filed as `research/<<issue>>-<n>-research.md...\n\n### /home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5f826d4b3affeptScH2iSt/checkpoint.md\nScope: sessions/ses_-ffe5f826d4b3affeptScH2iSt, Type: checkpoint, Score: 5.621\n...when a gate aborts, the DIAGNOSTIC must be visible (stdout, not stderr).\n- **DISPATCH EVENTS CARRY NO <<ISSUE>> PAYLOAD:** `gitea.event.<<issue>>.*` is null on workflow_dispatch. Fix: fetch <<issue>> title/body from...\n","metadata":{"count":9,"truncated":false},"title":"Memory search: 9 results","time":{"start":1788905055386,"end":1788905055472}},"id":"prt_g001a0830ce294001Df7MAdPHc","sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","messageID":"msg_g001a0830cb84c001t0NQKcjWr"}}
+{"type":"step_finish","timestamp":1788905055552,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"id":"prt_g001a0830ce4f2001HnpjNGPbp","reason":"tool-calls","snapshot":"d8594ae82cb03f83b35781e8ceae266c5d9dc6b8","messageID":"msg_g001a0830cb84c001t0NQKcjWr","sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","type":"step-finish","tokens":{"total":29273,"input":29052,"output":221,"reasoning":0,"cache":{"write":0,"read":0}},"cost":0}}
+{"type":"step_start","timestamp":1788905065148,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"id":"prt_g001a0830d0aba001ZzfnKeBTm","messageID":"msg_g001a0830ce5ab001xV6b6zH7e","sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","snapshot":"0bccb8ce97d091061ff937d5400a7388b464670a","type":"step-start"}}
+{"type":"text","timestamp":1788905066437,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"id":"prt_g001a0830d0b71002bRmvZXZn3","messageID":"msg_g001a0830ce5ab001xV6b6zH7e","sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","type":"text","text":"No exact skill match — this is a stage in a custom research pipeline, so I'll proceed directly. Memory shows a prior session completed OUTWARD_DISCOVERY for this issue; let me recover its source inventory.","time":{"start":1788905065329,"end":1788905066435}}}
+{"type":"tool_use","timestamp":1788905066444,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"type":"tool","tool":"read","callID":"call_d405d8010069479295405f48","state":{"status":"completed","input":{"file_path":"/home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5f7d1024a3ffe5J13LEwLr/checkpoint.md"},"output":"<path>/home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5f7d1024a3ffe5J13LEwLr/checkpoint.md</path>\n<type>file</type>\n<content>\n1: Topic: OUTWARD_DISCOVERY stage for issue 262 (research-262-r1, SQLite WAL performance in concurrent Python apps) — repo grounding + 4 discovery searches done, URL inventory captured, outward_discovery.json artifact pending\n2: \n3: # Session checkpoint\n4: _Generated by checkpoint writer; structure preserved across updates. Edit only content under italic instructions._\n5: \n6: ## §1 Active intent\n7: _User's most recent explicit request, verbatim block-quoted from the conversation. The verbatim quote is the ground truth for what to do — do not paraphrase._\n8: \n9: > \"## Your task\n10: > Generate search strategies and discover prior art for this issue.\"\n11: \n12: (Verbatim task section of the headless stage dispatch. Full context: process `research-262-r1` — issue 262, round 1, stage OUTWARD_DISCOVERY of 8; title \"OUTWARD_DISCOVERY acceptance: sqlite WAL performance in concurrent Python applications\" (question_type: repo-specific). MUST: produce search queries, discover URLs, classify source types. MUST NOT: read full sources yet (that is OUTWARD_READING). Output: stage artifact as structured text, expected artifact `outward_discovery.json`, ending with `StageCompleted: OUTWARD_DISCOVERY` (or `StageFailed:` + `Reason:`). Accepted prior artifacts: DEFINE contract + INWARD claims I1–I5 (files: rune_tui.py, warm_router.py, curator.py, auto_tasks.py, memory_store.py). blocking_unknowns: none.)\n13: \n14: ## §2 Next concrete action\n15: _The single next concrete step, derived from §1 and current state. Include verbatim quote when the user gave one._\n16: \n17: Run the remaining discovery searches (Python-specific sqlite3 concurrency: aiosqlite / check_same_thread / connection-per-call patterns; official SQLite locking + pragma docs: lockingmodel.html, pragma.html busy_timeout; production case studies: Fly.io/LiteFS, Litestream, Turso), then compose the stage artifact — query→sub-question strategy map, discovered-URL inventory with source_type classification, OUTWARD_READING priorities — as structured text for `outward_discovery.json`.\n18: > \"Produce your stage artifact as structured text. End with:\n19: > ```\n20: > StageCompleted: OUTWARD_DISCOVERY\n21: > ```\"\n22: \n23: ## §3 Directives (this session)\n24: _This session's specific working style. Project-level rules are in projects/<pid>/MEMORY.md — do not duplicate them here. Only put items that are session-specific._\n25: \n26: - Stage-boundary rule from capsule: `allowed_action_now = OUTWARD_DISCOVERY` — discovery via search-result titles/snippets ONLY; do NOT fetch/read full external sources this stage (that is the next stage, OUTWARD_READING).\n27: - Discovery method this session: webfetch against `https://duckduckgo.com/html/?q=<url-encoded terms>` (verified working; batch ≥4 queries in parallel). skill_search ran at turn 1 per first-query trigger: no exact match (nearest: firecrawl-search 0.61) → proceed without a skill.\n28: - Derive each query from repo-grep evidence first — question_type is repo-specific, so queries must match the real concurrency shape (multi-process, per-call connections, ro/RW mix, sqlite-vec per-connection load).\n29: \n30: ## §4 Task tree\n31: _Hierarchical view of tasks with current focus marked. Pulled from task tool's DB; one bullet per top-level task with status + summary. Append ` (progress: tasks/<id>/progress.md)` so the next agent can Read the per-task journal directly. Indent sub-tasks two spaces under their parent._\n32: \n33: (none — task tool DB returned \"No tasks\" at checkpoint time; stage work is not tracked as tasks this session)\n34: \n35: ## §5 Current work\n36: _Description of what was being done immediately before this checkpoint. Mention specific file paths and code locations._\n37: \n38: Executing OUTWARD_DISCOVERY for research-262-r1 (issue 262: SQLite WAL performance under concurrency in Python apps, acceptance-test question). Done so far: (a) repo grounding — grep for `sqlite|WAL|journal_mode|busy_timeout|PRAGMA` over src/rune (135 hits; details in §6) + `git log` (research-executor tree, HEAD 83ea89c). (b) 4 parallel DuckDuckGo SERP fetches, all successful. Discovered-URL inventory (titles/snippets only — NOT yet read, per stage contract):\n39: \n40: OFFICIAL DOCS (sqlite.org) — TOP reading priority:\n41: - https://sqlite.org/wal.html — Write-Ahead Logging; §2.2 concurrency (reader \"end mark\"); snippet also discloses a WAL data-race bug (≥2 connections in separate threads/processes writing/cLine truncated
+{"type":"tool_use","timestamp":1788905066447,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"type":"tool","tool":"read","callID":"call_c8234dc4b1a14a67aa9b64c0","state":{"status":"completed","input":{"file_path":"/home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5f7d08ef0effe7822prgaw/checkpoint.md"},"output":"<path>/home/nick/.local/share/mimocode/memory/sessions/ses_-ffe5f7d08ef0effe7822prgaw/checkpoint.md</path>\n<type>file</type>\n<content>\n1: # Session checkpoint\n2: _Generated by checkpoint writer; structure preserved across updates. Edit only content under italic instructions._\n3: \n4: > \"# Research Stage: OUTWARD_READING ... ## Your task: Read the selected sources from OUTWARD_DISCOVERY. Extract claims and provenance. ## You MUST read primary sources, extract claims with source IDs, note limitations. ## You MUST NOT do NOT generate new search queries (that is OUTWARD_DISCOVERY).\"\n5: \n6: (Paraphrased: headless stage dispatch for process research-262-r1, issue 262, round 1, stage OUTWARD_READING of 8; completed stages DEFINE/INWARD/OUTWARD_DISCOVERY; allowed_action_now=OUTWARD_READING; expected artifact `outward_reading.json`; output must end with `StageCompleted: OUTWARD_READING` (or `StageFailed:` + `Reason:`). INWARD claims I1–I5 name files rune_tui.py, warm_router.py, curator.py, auto_tasks.py, memory_store.py. Full process capsule JSON was in the dispatch; stage prompt template confirmed at /mnt/workdrive/research-stage/prompts/research-stages/outward_reading.md.)\n7: \n8: ## §2 Next concrete action\n9: _The single next concrete step, derived from §1 and current state. Include verbatim quote when the user gave one._\n10: \n11: Continue OUTWARD_READING: fetch the remaining priority sources from the discovery inventory (batch in parallel), then compose the stage artifact as structured text (claims with source IDs + limitations), ending with the literal line `StageCompleted: OUTWARD_READING`.\n12: \n13: Remaining sources to read (from prior-session inventory, ses_-ffe5f7d1024a3ffe5J13LEwLr):\n14: - https://github.com/necat101/sqlite-deployment-safety-lab (HN #47637353 repro lab)\n15: - https://github.com/mouadja02/skills/blob/main/skills/databases/sqlite-wal-checkpoint-starvation-diagnostics/SKILL.md\n16: - https://productionhardening.org/wal-optimization-concurrency-tuning/ (+ /connection-pooling-strategies/) — verify site credibility\n17: - https://dev.to/odd_background_328/reproduce-sqlite-wal-checkpoint-starvation-with-one-forgotten-reader-4jfo\n18: - https://dev.to/lumin-playstar/sqlite-wal-mode-10x-performance-for-python-apps-4ic — verify \"10x\" numbers\n19: - https://www.sqliteforum.com/p/checkpoint-algorithms-and-wal-performance\n20: - https://pypi.org/project/pytest-benchmark/ + https://pytest-benchmark.readthedocs.io/en/latest/ + https://bencher.dev/learn/benchmarking/python/pytest-benchmark/\n21: - https://stackoverflow.com/questions/393554/python-sqlite3-and-concurrency\n22: - Optional/secondary: sqlite.org lockingmodel/pragma docs; theconsensus.dev WAL-reset reproducer post; charlesleifer.com \"going fast with sqlite and python\"; begin-concurrent branch doc.\n23: \n24: Already read this session (do not re-fetch): sqlite.org/wal.html; sqlite.org/c3ref/wal_checkpoint_v2.html; github.com/joedougherty/sqlite3_concurrent_writes_test_suite (README). Extracted claims recorded in §5/§7.\n25: \n26: ## §3 Directives (this session)\n27: _This session's specific working style. Project-level rules are in projects/<pid>/MEMORY.md — do not duplicate them here. Only put items that are session-specific._\n28: \n29: - Stage contract: OUTWARD_READING only — read primary sources, extract claims with source IDs, note limitations. Do NOT generate new search queries (that is OUTWARD_DISCOVERY).\n30: - Discovery tooling note: GitHub repo pages fetch fine via plain webfetch but return large navigation chrome — content is at the bottom; a raw README fetch (raw.githubusercontent.com) is cleaner for code-heavy repos.\n31: \n32: ## §4 Task tree\n33: _Hierarchical view of tasks with current focus marked. Pulled from task tool's DB; one bullet per top-level task with status + summary. Append ` (progress: tasks/<id>/progress.md)` so the next agent can Read the per-task journal directly. Indent sub-tasks two spaces under their parent._\n34: \n35: (none — task tool DB returned \"No tasks\" at checkpoint time; stage work is not tracked as tasks this session)\n36: \n37: ## §5 Current work\n38: _Description of what was being done immediately before this checkpoint. Mention specific file paths and code locations._\n39: \n40: Executing OUTWARD_READING for research-262-r1 (issue 262: SQLite WAL performance under concurrency in Python apps; acceptance-test question). Progress so far:\n41: \n42: 1. Recovered the OUTWARD_DISCOVERY source inventory from prior session checkpoint (memory/sessions/ses_-ffe5f7d1024a3ffe5J13LEwLr/checkpoint.md §5) — the dispatch capsule truncated it. Also Line truncated
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+{"type":"text","timestamp":1788905075522,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"id":"prt_g001a0830d2b99001mynl7aF5l","messageID":"msg_g001a0830d11a4001ebTTYjiIn","sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","type":"text","text":"I've recovered the full state. Prior sessions already read S1–S3; my job now is to read the remaining priority sources and compose the stage artifact. Fetching the next batch in parallel:","time":{"start":1788905073561,"end":1788905075520}}}
+{"type":"tool_use","timestamp":1788905075720,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"type":"tool","tool":"webfetch","callID":"call_a37a59f02eaa479a8931e1b8","state":{"status":"completed","input":{"format":"text","url":"https://www.sqliteforum.com/p/checkpoint-algorithms-and-wal-performance"},"output":"SQLite WAL Checkpoint Algorithms Explained\n            \n            \n            \n            \n        \n\n        \n\n        \n        \n        \n        \n        \n        \n\n        \n            \n                \n            \n                \n            \n                \n            \n                \n            \n                \n            \n                \n            \n                \n            \n                \n            \n                \n            \n                \n            \n                \n            \n                \n            \n                \n            \n        \n\n        \n        \n        \n        \n        \n        \n        \n        \n        \n        \n        \n\n        \n\n        \n\n        \n\n        \n            \n                \n            \n        \n            \n                \n            \n        \n            \n                \n            \n        \n            \n        \n            \n        \n            \n        \n\n        \n\n        \n            \n        \n\n        \n        \n          \n        \n\n        \n        \n\n        \n\n        \n\n        \n            SQLite ForumSubscribeSign inCheckpoint Algorithms and WAL Performance TuningUnderstanding Checkpoint Modes, WAL Growth, and Write Throughput in SQLiteJenny MuralidharanMay 12, 20262ShareIn our previous guide on SQLite WAL internals, we explored how SQLite stores changes inside the WAL file using frames and commit records.But WAL mode introduces a new challenge:What happens when the WAL file keeps growing?That’s where checkpointing becomes critical. Checkpointing is one of the most important mechanisms in SQLite WAL mode because it directly affects:Write throughputRead performanceDisk usageDatabase responsivenessPoor checkpoint configuration can lead to:Large WAL filesSlower writesIncreased I/O pressureUnexpected latency spikesIn this guide, we’ll break down:How checkpointing works internallyThe different checkpoint algorithmsHow checkpoints impact performancePractical WAL tuning strategies for production systemsWhat is a WAL Checkpoint?In WAL mode:Writes are appended to the -wal fileThe main database file remains unchanged initiallyEventually, SQLite needs to merge WAL changes back into the main database.This process is called a checkpoint.What Happens During a CheckpointSQLite:Reads committed frames from the WAL fileCopies those pages into the main database fileUpdates the database stateOptionally truncates or resets the WALWithout checkpointing:WAL files would grow indefinitelyCheckpointing vs CommittingThis is a common point of confusion.CommitA commit:Marks a transaction as complete inside the WAL fileMakes changes visible to readersCheckpointA checkpoint:Moves committed changes from WAL into the database file👉 Commits affect transaction visibility.👉 Checkpoints affect storage consolidation.How SQLite Decides When to CheckpointSQLite supports:Automatic checkpointsManual checkpointsAutomatic CheckpointingBy default:PRAGMA wal_autocheckpoint = 1000;This means: SQLite triggers a checkpoint after roughly 1000 WAL pages accumulate The actual size depends on:Database page size Workload patternsCheckpoint Algorithms in SQLiteSQLite provides four primary checkpoint modes:PASSIVE FULL RESTART TRUNCATE Each behaves differently internally.PASSIVE CheckpointPRAGMA wal_checkpoint(PASSIVE);BehaviorCopies as many WAL frames as possibleDoes not block readersStops if active readers prevent progressAdvantagesMinimal disruptionGood for busy systems DisadvantagesWAL may not fully shrink Incomplete checkpoints are common under heavy read load Best Use CaseApplications prioritizing responsiveness over aggressive cleanup.FULL CheckpointPRAGMA wal_checkpoint(FULL);BehaviorWaits for readers if necessary Ensures all possible frames are checkpointedAdvantagesMore complete WAL consolidation Better WAL size controlDisadvantagesCan temporarily delay operations Increased latency during checkpoint executionBest Use CaseModerate workloads requiring balanced WAL maintenance.RESTART CheckpointPRAGMA wal_checkpoint(RESTART);BehaviorPerforms a FULL checkpoint Resets WAL so new writes begin from the start Important DetailThe WAL file itself may remain allocated on disk.AdvantagesEfficient WAL reuse Reduces file fragmentationBest Use CaseLong-running applications with steady write activity.TRUNCATE CheckpointPRAGMA wal_checkpoint(TRUNCATE);BehaviorFully checkpoints WAL contents Truncates WAL file to zero bytesAdvantagesMaximum WAL cleanup Frees disk space immediatelyDisadvantagesMore expensive operation Can increase I/O overheadBest Use CaseMainLine truncated
+{"type":"tool_use","timestamp":1788905075785,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"type":"tool","tool":"webfetch","callID":"call_4e947775b1a44b2fa8e8ef67","state":{"status":"completed","input":{"format":"text","url":"https://raw.githubusercontent.com/mouadja02/skills/main/skills/databases/sqlite-wal-checkpoint-starvation-diagnostics/SKILL.md"},"output":"---\nname: sqlite-wal-checkpoint-starvation-diagnostics\ndescription: \"Use when a SQLite database in WAL mode has a growing -wal file, repeated incomplete checkpoints, SQLITE_BUSY, disk-pressure risk, or reader slowdowns that may indicate checkpoint starvation.\"\nversion: \"1.0.0\"\nlicense: MIT\n---\n\n# SQLite WAL Checkpoint Starvation Diagnostics\n\nDiagnose a WAL that cannot reset without deleting journal files or turning a production incident into a write outage. Separate **copying frames into the database** from **resetting/truncating the WAL**: a checkpoint can make progress while an older reader still prevents reset.\n\n## When to Use\n\n- A `database-wal` file grows continuously or threatens disk capacity.\n- `PRAGMA wal_checkpoint(...)` repeatedly leaves frames uncheckpointed or reports busy.\n- Read latency worsens while WAL size and long-lived read transactions increase.\n- Space returns only after all application processes or readers exit.\n- An operator needs a bounded, evidence-first checkpoint recovery sequence.\n\n## When Not to Use\n\n- Ordinary query/index tuning with no WAL growth or checkpoint symptom.\n- Rollback-journal databases (`journal_mode` is not `wal`).\n- Corruption recovery, file carving, or restoring a damaged database.\n- Network filesystems: SQLite WAL requires cooperating processes on one host; redesign placement rather than applying this runbook.\n\n## Prerequisites\n\n- A verified backup or application recovery point before any production mutation.\n- Filesystem access for size and free-space measurements.\n- A SQLite client compatible with the target database.\n- Application observability that can identify connection owners and transaction age. SQLite itself does not provide a universal cross-process reader list.\n- Authority to pause traffic only if read-only diagnosis proves escalation necessary.\n\n## Quick Reference\n\n```sql\nPRAGMA journal_mode;                 -- inspect; do not change during diagnosis\nPRAGMA wal_autocheckpoint;           -- configured frame threshold\nPRAGMA busy_timeout;                 -- current connection only\nPRAGMA wal_checkpoint(PASSIVE);      -- non-blocking diagnostic snapshot\n```\n\n`wal_checkpoint` returns three integers: **busy, log frames, checkpointed frames**. Interpret the tuple together with its mode:\n\n| Observation | Meaning | Next action |\n| --- | --- | --- |\n| `checkpointed == log` | All reported frames were copied | Verify whether WAL bytes stabilize/reset after new writes |\n| PASSIVE and `checkpointed < log` | A reader boundary or concurrent activity limited progress; PASSIVE's busy column is always `0` | Correlate repeated samples with reader age |\n| FULL/RESTART/TRUNCATE, `busy == 1` | The requested blocking checkpoint could not complete | Stop escalation and identify the holder |\n| Repeated unchanged remainder | Likely persistent boundary, not a one-off spike | Find long transactions, leaked cursors, or overlapping readers |\n\nAnalyze a captured tuple offline:\n\n```bash\npython3 scripts/analyze_checkpoint.py \\\n  --input observations/checkpoint.json\n```\n\nInput example:\n\n```json\n{\"mode\":\"PASSIVE\",\"busy\":0,\"log_frames\":412000,\"checkpointed_frames\":900,\"wal_bytes\":3375104000,\"free_bytes\":4294967296,\"oldest_reader_seconds\":1800}\n```\n\n## Procedure\n\n### 1. Freeze the evidence, not the workload\n\nRecord UTC time, database path, database/WAL/SHM byte sizes, filesystem free bytes, process owners, deployment version, and recent write rate. Sample at least three times across the expected automatic-checkpoint interval.\n\n**Completion:** observations show whether WAL bytes and the uncheckpointed remainder are growing, stable, or recovering.\n\nDo not copy a live database by copying only the main file. Use the application's supported backup path or SQLite backup API.\n\n### 2. Confirm WAL mode and scope\n\nRun `PRAGMA journal_mode;` on the exact database. Map every process, worker, pool, desktop window, and maintenance job that can hold a connection. Check whether transaction scopes span streaming responses, iteration, sleeps, network calls, or user interaction.\n\n**Completion:** every known connection class has an owner and expected maximum read/write transaction duration.\n\n### 3. Take a PASSIVE checkpoint snapshot\n\nUse `PRAGMA wal_checkpoint(PASSIVE);` first. It checkpoints what it can without waiting for readers or writers. Capture the exact three-column tuple; do not reduce it to “success” merely because SQL execution returned normally.\n\nRepeat with timestamps. Compare `log - checkpointed`, WAL bytes, write raLine truncated
+{"type":"tool_use","timestamp":1788905075787,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"type":"tool","tool":"webfetch","callID":"call_d7c038c2822a40e48d67c3e5","state":{"status":"completed","input":{"format":"text","url":"https://raw.githubusercontent.com/necat101/sqlite-deployment-safety-lab/master/README.md"},"output":"# SQLite Deployment Safety Lab\n\nDemonstrates real-world SQLite deployment issues from [HN #47637353](https://news.ycombinator.com/item?id=47637353) about running SQLite in production.\n\n## The HN Debate Summary\n\n**The incident**: Ultrathink.art lost 2 orders after **11 pushes in 2 hours** with overlapping Kamal deploys. Three containers simultaneously accessed the same SQLite WAL file on a shared Docker volume. Orders 16 and 17 succeeded in Stripe but never made it to the database.\n\n**HN discussion themes**:\n- **Operational failure, not SQLite failure**: Pushing straight to main, agents auto-deploying, no deploy serialization\n- **WAL shared-memory across containers**: Debated whether mmap'd `-shm` files work reliably across Docker containers (they do, via the shared volume)\n- **Single-writer limitation**: Many commenters clarified WAL allows concurrent readers but NOT concurrent writers\n- **Process termination risk**: Overlapping deploys + SIGTERM mid-transaction = data loss\n- **Backup safety**: `cp` vs SQLite's `.backup` API - raw copies can be corrupt\n\n## Experiments\n\nAll 5 experiments are now committed and ready to run:\n\n### ✅ Experiment 1: WAL Concurrency Limits\n**File**: `experiments/01_wal_concurrency.py`  \n**Proves**: SQLite allows only ONE writer at a time, even in WAL mode. Concurrent writers get SQLITE_BUSY.\n\n**Validated output**:\n```\nSummary: 3 succeeded, 2 failed\nLost writes: 2\n✗ PROVEN: Even in WAL mode, SQLite allows only ONE writer at a time\n```\n\n### ✅ Experiment 2: Overlapping Deploys\n**File**: `experiments/02_overlapping_deploys.py`  \n**Proves**: Simulates 3 containers with overlapping lifetimes writing to shared DB.\n\n**Note**: In controlled tests, SQLite properly serializes writes and no data is lost. Real data loss occurs when processes are SIGTERM'd mid-transaction or applications don't handle SQLITE_BUSY errors.\n\n### ✅ Experiment 3: Checkpoint Blocking\n**File**: `experiments/03_checkpoint_behavior.py`  \n**Proves**: Long-running readers block checkpoints, causing WAL files to grow.\n\n### ✅ Experiment 4: Unsafe Backups\n**File**: `experiments/04_unsafe_backup.py`  \n**Proves**: `cp` can create corrupt backups when copying live databases. Use `sqlite3 .backup` instead.\n\n### ✅ Experiment 5: Busy Timeout\n**File**: `experiments/05_busy_timeout.py`  \n**Proves**: How `timeout: 5000` works - writers wait up to 5 seconds, then fail with SQLITE_BUSY.\n\n## Running the Lab\n\n```bash\ngit clone https://github.com/necat101/sqlite-deployment-safety-lab.git\ncd sqlite-deployment-safety-lab\n\n# Run all experiments\n./run_all.sh\n\n# Or run individually\npython3 experiments/01_wal_concurrency.py\npython3 experiments/02_overlapping_deploys.py\n# etc.\n```\n\n## Key Takeaways\n\n1. **SQLite WAL ≠ Multi-writer**: WAL enables concurrent readers + single writer. Writes are serialized.\n2. **Deploy serialization is mandatory**: Use GitHub Actions concurrency:\n   ```yaml\n   concurrency:\n     group: production-deploy\n     cancel-in-progress: false\n   ```\n3. **Never use `cp` for backups**: Use `sqlite3 db \".backup backup.db\"` or the backup API\n4. **Monitor WAL size**: Long-running readers block checkpoints, causing unbounded growth\n5. **Handle SQLITE_BUSY**: With `timeout: 5000`, writers wait 5s then fail. App must retry or handle the error.\n\n## References\n\n- [HN Thread #47637353](https://news.ycombinator.com/item?id=47637353)\n- [Ultrathink: SQLite in Production](https://ultrathink.art/blog/sqlite-in-production-lessons)\n- [SQLite WAL Mode](https://sqlite.org/wal.html)\n- [How to Corrupt SQLite](https://sqlite.org/howtocorrupt.html)\n- [GitHub Actions: Control Workflow Concurrency](https://docs.github.com/en/actions/how-tos/write-workflows/choose-when-workflows-run/control-workflow-concurrency)\n\n## Validation Status\n\nSee [VALIDATED_RESULTS.md](VALIDATED_RESULTS.md) for detailed test output.\n\n**Experiment 1**: ✅ Fully validated with real output showing 2 of 5 writers failing  \n**Experiments 2-5**: ✅ Scripts committed, validated locally - run them to see results\n","metadata":{"truncated":false},"title":"https://raw.githubusercontent.com/necat101/sqlite-deployment-safety-lab/master/README.md (text/plain; charset=utf-8)","time":{"start":1788905075522,"end":1788905075786}},"id":"prt_g001a0830d2bdc001hEkwnnL95","sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","messageID":"msg_g001a0830d11a4001ebTTYjiIn"}}
+{"type":"tool_use","timestamp":1788905075985,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"type":"tool","tool":"webfetch","callID":"call_25b0964bdea54da495294764","state":{"status":"completed","input":{"format":"text","url":"https://dev.to/odd_background_328/reproduce-sqlite-wal-checkpoint-starvation-with-one-forgotten-reader-4jfo"},"output":"Reproduce SQLite WAL Checkpoint Starvation With One Forgotten Reader - DEV Community\n    \n    \n    \n    \n    \n\n    \n    \n    \n    \n    \n    \n    \n    \n    \n    \n    \n    \n    \n      \n      \n\n      \n      \n      \n      \n      \n\n\n\n      \n      \n      \n      \n      \n      \n      \n      \n      \n      \n      \n      \n      \n      \n      \n\n      \n\n      \n      \n      \n    \n      \n      \n\n\n\n      \n        \n        \n      \n      \n\n\n  \n  Skip to content\n  \n    \n      \n        Navigation menu\n    \n\n\n      \n    \n    \n    \n\n\n\n    \n      \n        \n          \n            \n            \n              Search\n    \n\n\n            \n\n            \n                Powered by Algolia\n                Search\n  \n\n\n            \n          \n        \n      \n    \n\n    \n        \n          \n            \n              Log in\n            \n          \n\n          \n            Create account\n          \n        \n    \n  \n\n\n\n  \n    \n      DEV Community\n\n      \n        Close\n\n      \n    \n\n    \n    \n  \n  \n\n\n\n      \n\n  \n    \n\n    \n\n    \n      \n    \n\n      \n\n  \n      \n        \n    \n        \n    \n    \n        \n        \n        \n    \n\n\n      \n      \n        \n      \n      \n        \n      \n      \n        Add reaction\n      \n  \n\n  \n    \n        \n    \n      \n    \n    \n\n    \n      Like\n    \n\n\n        \n    \n      \n    \n    \n\n    \n      Unicorn\n    \n\n\n        \n    \n      \n    \n    \n\n    \n      Exploding Head\n    \n\n\n        \n    \n      \n    \n    \n\n    \n      Raised Hands\n    \n\n\n        \n    \n      \n    \n    \n\n    \n      Fire\n    \n\n\n    \n  \n\n\n\n    \n      \n    \n\n\n    \n    \n      \n    \n\n    \n      Jump to Comments\n    \n\n\n\n    \n      \n    \n\n\n    \n    \n\n    \n      Save\n    \n\n\n\n\n    \n      \n  \n\n\n    \n    \n      Boost\n    \n\n\n\n      \n        \nPick as gem\n      \n\n      \n      \n      \n        \n          More...\n\n        \n\n        \n          \n            \n              Copy link\n              Copy link\n    \n\n\n            \n            Copied to Clipboard\n          \n\n          \n            \n              Share to X\n            \n            \n              Share to LinkedIn\n            \n            \n              Share to Facebook\n            \n            \n              Share to Mastodon\n            \n          \n\n          \n          \n          \n            Share Post via...\n          \n\n          Report Abuse\n        \n      \n    \n  \n\n    \n\n    \n      \n\n\n        \n          \n\n            \n              \n                \n                \n                  \n                      \n                  \n                  \n                    Odd_Background_328\n                    \n                    \n                    \n                        Posted on Jul 20\n\n\n\n                    \n                  \n                \n              \n\n              \n\n              \n                Reproduce SQLite WAL Checkpoint Starvation With One Forgotten Reader\n              \n              \n                  \n                      #sqlite\n                      #database\n                      #devops\n                      #monitoring\n                  \n            \n          \n\n          \n            \n                A SQLite service can keep answering health checks while its WAL grows without a successful checkpoint. One forgotten read transaction is enough to reproduce the risk.\n\nRun a controlled drill:\n\n\nEnable WAL mode and create a small table.\nOpen connection A, begin a read transaction, and keep it open.\nFrom connection B, commit batches of writes for 60 seconds.\nSample WAL bytes and checkpoint results every second.\nRelease A and observe recovery.\n\n\n\n\nPRAGMA journal_mode=WAL;\nPRAGMA wal_checkpoint(PASSIVE);\n\n\n\n    Enter fullscreen mode\n    \n\n\n    Exit fullscreen mode\n    \n\n\n\n\n\n\n\n\nRecord the three checkpoint counters plus duration, WAL file size, oldest transaction age, write latency, and free disk bytes. A green SELECT 1 says nothing about checkpoint progress.\n\nMy fault-injection gate looks like this:\n\n\n\nGiven: one reader holds its transaction\nWhen: 10,000 writes commit\nThen: writes remain bounded\nAnd: WAL growth triggers an alert before the disk budget\nWhen: the reader closes\nThen: checkpoint progress resumes and WAL size converges\n\n\n\n    Enter fullscreen mode\n    \n\n\n    Exit fullscreen mode\n    \n\n\n\n\n\n\n\n\nDo not stLine truncated
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+{"type":"step_start","timestamp":1788905084153,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"id":"prt_g001a0830d54f7001bmFPAaw63","messageID":"msg_g001a0830d36c0001F51hkFY1e","sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","snapshot":"58de6f87d294dcf029c391947fb101235c7ad518","type":"step-start"}}
+{"type":"text","timestamp":1788905085627,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"id":"prt_g001a0830d5591002sCbzZEY2Y","messageID":"msg_g001a0830d36c0001F51hkFY1e","sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","type":"text","text":"Good progress — four more sources read. Fetching the remaining priority sources (productionhardening.org credibility check, the \"10x\" dev.to post, pytest-benchmark docs, Stack Overflow Q&A):","time":{"start":1788905084305,"end":1788905085625}}}
+{"type":"tool_use","timestamp":1788905085685,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"type":"tool","tool":"webfetch","callID":"call_575d8cd6f0db46e799f3bfe1","state":{"status":"completed","input":{"format":"text","url":"https://pypi.org/project/pytest-benchmark/"},"output":"pytest-benchmark · PyPI\n    \n    \n    \n    \n    \n    \n    \n      \n    \n    \n    \n\n  \n  \n  \n  \n      \n    \n    \n    \n      \n      Skip to main content\n      Switch to mobile version\n      \n        \n        \n            \n\n  \n    \n        \n          \n            \n              \n            \n          \n          \n            Search PyPI\n            \n            \n              \n              Search\n            \n          \n        \n        \n    \n      \n        \n          Help\n        \n        \n          Docs\n        \n        \n          Log in\n        \n        \n          Register\n        \n      \n    \n    \n      \n        \n      \n      \n        \n          Help\n        \n        \n          Docs\n        \n        \n          Log in\n        \n        \n          Register\n        \n      \n    \n\n  \n    \n  \n  \n    \n        \n          \n            Deutsch\n          \n        \n        \n          \n            English\n          \n        \n        \n          \n            español\n          \n        \n        \n          \n            Esperanto\n          \n        \n        \n          \n            français\n          \n        \n        \n          \n            português (Brasil)\n          \n        \n        \n          \n            Ελληνικά\n          \n        \n        \n          \n            русский\n          \n        \n        \n          \n            українська\n          \n        \n        \n          \n            עברית\n          \n        \n        \n          \n            中文 (简体)\n          \n        \n        \n          \n            中文 (繁體)\n          \n        \n        \n          \n            日本語\n          \n        \n        \n          \n            한국어\n          \n        \n    \n  \n  \n  \n\n\n  \n    \n      Search PyPI\n      \n      \n      \n        \n        Search\n      \n    \n  \n\n\n  \n    pytest-benchmark 5.3.0\n      A ``pytest`` fixture for benchmarking code. It will group the tests into rounds that are calibrated to the chosen timer.\n      \n        \n          pip install pytest-benchmark\n          \n            \n            Copy PIP instructions\n          \n        \n      \n  \n  \n\n  \n    \n      \n        \n          \n            \n              \nDescription            \n          \n        \n          \n            \n              \n                \nDownload files              \n            \n          \n        \n          \n            \n              \nRelease history            \n          \n        \n      \n    \n  \n    \n      \n\n  \n    \n        \n\ndocs\n \n\ntests\n  \n\npackage\n    \n\n\n\nA pytest fixture for benchmarking code. It will group the tests into rounds that are calibrated to the chosen\ntimer.\nSee calibration and FAQ.\n\nFree software: BSD 2-Clause License\n\n\nInstallation\npip install pytest-benchmark\n\n\nDocumentation\nFor latest release: pytest-benchmark.readthedocs.org/en/stable.\nFor master branch (may include documentation fixes): pytest-benchmark.readthedocs.io/en/latest.\n\n\nExamples\nBut first, a prologue:\n\nThis plugin tightly integrates into pytest. To use this effectively you should know a thing or two about pytest first.\nTake a look at the introductory material\nor watch talks.\nFew notes:\n\nThis plugin benchmarks functions and only that. If you want to measure block of code\nor whole programs you will need to write a wrapper function.\nIn a test you can only benchmark one function. If you want to benchmark many functions write more tests or\nuse parametrization.\nTo run the benchmarks you simply use pytest to run your “tests”. The plugin will automatically do the\nbenchmarking and generate a result table. Run pytest --help for more details.\n\n\nThis plugin provides a benchmark fixture. This fixture is a callable object that will benchmark any function passed\nto it.\nExample:\ndef something(duration=0.000001):\n    \"\"\"\n    Function that needs some serious benchmarking.\n    \"\"\"\n    time.sleep(duration)\n    # You may return anything you want, like the result of a computation\n    return 123\n\ndef test_my_stuff(benchmark):\n    # benchmark something\n    result = benchmark(something)\n\n    # Extra code, to verify that the run completed correctly.\n    # Sometimes you may want to check the result, fast functions\n    # are no good if they return incorrect results :-)\n    assert result == 123\nYou can also pass extra arguments:\ndef test_my_stuff(benchmark):\n    benchmark(time.sleep, 0.02)\nOr even keyword arguments:\ndef test_my_stuff(benchmark):\n    benchmark(tLine truncated
+{"type":"tool_use","timestamp":1788905085717,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"type":"tool","tool":"webfetch","callID":"call_bf6317a8ec4f4589a8a4e5a5","state":{"status":"completed","input":{"format":"text","url":"https://productionhardening.org/wal-optimization-concurrency-tuning/"},"output":"WAL Optimization &amp; Concurrency Tuning · SQLite Hardening\n  \n  \n  \n\n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n\n  \n  \n  \n  \n\n  \n  \n  \n  \n  \n  \n  \n\n  \n  \n  Skip to content\n\n  \n    \n      \n      \n        SQLite Production Hardening\n        &amp; WAL Optimization\n      \n    \n\n    \n      \n    \n\n    \n      \n        Home\n      \n        Architecture &amp; Hardening\n      \n        WAL &amp; Concurrency\n      \n        Backup &amp; Recovery\n      \n        All content\n      \n    \n  \n\n\n  \n    \n  \n  \n    Home\n    ContentWAL Optimization &amp; Concurrency Tuning\n\n\n\n  \n    WAL Optimization &amp; Concurrency Tuning #\nSQLite’s Write-Ahead Logging mode is the journaling mechanism for modern concurrent deployments, yet out-of-the-box configurations rarely survive the concurrency and durability demands of edge telemetry, desktop synchronization engines, Python automation pipelines, or embedded controllers. In production, WAL is not a performance toggle you flip and forget; it is a crash-safety contract that dictates how writes are staged, how readers isolate snapshots, and how the database recovers after abrupt power loss. This reference strips away academic abstractions and delivers hardened tuning strategies, explicit PRAGMA trade-offs, measurable concurrency thresholds, and deterministic fallback routing — the same discipline applied across the companion SQLite Architecture &amp; Production Hardening reference. Every configuration here has been validated against SD-card degradation, eMMC wear leveling, and high-contention desktop workloads, and each section links down to a dedicated page where a single knob is tuned in depth.\nCore Mechanics &amp; Crash-Safety Architecture #\nWAL operates by appending committed transactions to a separate -wal file before those frames are ever applied to the main database file. Readers bypass the main file’s write locks by reconstructing their snapshot from the WAL, which is what enables true concurrent read/write isolation. A third file, the -shm shared-memory segment, acts as a lock index and WAL page map, coordinating access across every connection and process attached to the database. This architecture eliminates the reader-writer contention that crippled the legacy rollback journaling modes, but it introduces specific failure modes that must be engineered around rather than assumed away.\n\n\n  The WAL write path in SQLite\n  A single writer connection appends committed frames to the sibling minus-wal log file. Concurrent readers reconstruct their snapshots directly from that log rather than blocking on the main database. The minus-shm shared-memory segment indexes WAL pages and coordinates locking across every connection. A later checkpoint merges the accumulated frames back into the main database file.\n  \n    \n      \n    \n    \n      \n    \n  \n  \n  \n  Writer\n  one at a time\n  \n  append\n  \n  -wal log file\n  committed frames\n  + per-frame checksums\n  \n  checkpoint (merge)\n  \n  \n    \n    \n  \n  Main database\n  never half-written\n  \n  \n  -shm index\n  WAL page map + locks\n  \n  coordinates\n  access\n  \n  \n  Reader 1\n  \n  Reader 2\n  \n  \n  consistent snapshot reads\n\nThe WAL write path: a single writer appends frames to the -wal file while readers continue from a consistent snapshot, and a checkpoint later merges frames back into the main database.\n\nCrash safety in WAL mode rests on three guarantees: atomic commit, ordered flush, and deterministic recovery. When a transaction commits, SQLite appends its frames to the WAL — each frame carrying a 32-bit checksum and a commit marker — and only migrates those frames into the main database file during a later checkpoint. If power fails mid-commit, the WAL retains the last fully committed transaction and discards any torn trailing frame whose checksum does not validate; SQLite replays the valid prefix on the next open. The main database file is therefore never left half-written.\nThese guarantees degrade the instant synchronization settings are relaxed or the underlying storage controller reorders writes. Setting synchronous=OFF bypasses fsync() entirely, trading durability for throughput — unacceptable for edge devices subject to brownouts or desktop apps holding financial state. The production baseline is synchronous=NORMAL, which guarantees the database can never corrupt even though commits made in the moments before a power cut may be rolled back. For critical embedded control loops where every acknowledged write must survive power failure, synchronous=FULL remains mandatory despite a 15–30% write-lLine truncated
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+{"type":"tool_use","timestamp":1788905085761,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"type":"tool","tool":"webfetch","callID":"call_11f7d2bd42224e5291b02237","state":{"status":"completed","input":{"format":"text","url":"https://dev.to/lumin-playstar/sqlite-wal-mode-10x-performance-for-python-apps-4ic"},"output":"SQLite WAL Mode: 10x Performance for Python Apps - DEV Community\n    \n    \n    \n    \n    \n\n    \n    \n    \n    \n    \n    \n    \n    \n    \n    \n    \n    \n    \n      \n      \n\n      \n      \n      \n      \n      \n\n\n\n      \n      \n      \n      \n      \n      \n      \n      \n      \n      \n      \n      \n      \n      \n      \n\n      \n\n      \n      \n      \n    \n      \n      \n\n\n\n      \n        \n        \n      \n      \n\n\n  \n  Skip to content\n  \n    \n      \n        Navigation menu\n    \n\n\n      \n    \n    \n    \n\n\n\n    \n      \n        \n          \n            \n            \n              Search\n    \n\n\n            \n\n            \n                Powered by Algolia\n                Search\n  \n\n\n            \n          \n        \n      \n    \n\n    \n        \n          \n            \n              Log in\n            \n          \n\n          \n            Create account\n          \n        \n    \n  \n\n\n\n  \n    \n      DEV Community\n\n      \n        Close\n\n      \n    \n\n    \n    \n  \n  \n\n\n\n      \n\n  \n    \n\n    \n\n    \n      \n    \n\n      \n\n  \n      \n        \n    \n        \n    \n    \n        \n        \n        \n    \n\n\n      \n      \n        \n      \n      \n        \n      \n      \n        Add reaction\n      \n  \n\n  \n    \n        \n    \n      \n    \n    \n\n    \n      Like\n    \n\n\n        \n    \n      \n    \n    \n\n    \n      Unicorn\n    \n\n\n        \n    \n      \n    \n    \n\n    \n      Exploding Head\n    \n\n\n        \n    \n      \n    \n    \n\n    \n      Raised Hands\n    \n\n\n        \n    \n      \n    \n    \n\n    \n      Fire\n    \n\n\n    \n  \n\n\n\n    \n      \n    \n\n\n    \n    \n      \n    \n\n    \n      Jump to Comments\n    \n\n\n\n    \n      \n    \n\n\n    \n    \n\n    \n      Save\n    \n\n\n\n\n    \n      \n  \n\n\n    \n    \n      Boost\n    \n\n\n\n      \n        \nPick as gem\n      \n\n      \n      \n      \n        \n          More...\n\n        \n\n        \n          \n            \n              Copy link\n              Copy link\n    \n\n\n            \n            Copied to Clipboard\n          \n\n          \n            \n              Share to X\n            \n            \n              Share to LinkedIn\n            \n            \n              Share to Facebook\n            \n            \n              Share to Mastodon\n            \n          \n\n          \n          \n          \n            Share Post via...\n          \n\n          Report Abuse\n        \n      \n    \n  \n\n    \n\n    \n      \n\n\n        \n          \n\n            \n              \n                \n                \n                  \n                      \n                  \n                  \n                    Ilja Fedorow (PLAY-STAR)\n                    \n                    \n                    \n                        Posted on Mar 10\n\n\n\n                    \n                  \n                \n              \n\n              \n\n              \n                SQLite WAL Mode: 10x Performance for Python Apps\n              \n              \n                  \n                      #python\n                      #sqlite\n                      #database\n                      #performance\n                  \n            \n          \n\n          \n            \n                \n  \n  \n  SQLite WAL Mode: 10x Performance for Python Apps\n\n\n\n\n\nYou're building a Python application, and like many developers, you've chosen SQLite for its unparalleled simplicity, zero-configuration, and embedded nature. It's fantastic for local data storage, small-to-medium web applications, desktop apps, and even mobile backends.\n\nBut then, your application starts to grow. More users, more data, more concurrent operations. Suddenly, that fast, reliable SQLite database starts to feel sluggish. Writes block reads, reads block writes, and your once-snappy app feels like it's wading through mud.\n\nThe problem? You're likely still using SQLite's default journaling mode, which, while robust, isn't designed for high concurrency or write-heavy workloads.\n\nThe solution? A single PRAGMA statement can unlock a hidden superpower in SQLite, transforming its performance and concurrency profile: Write-Ahead Logging (WAL) mode. For many Python applications, switching to WAL mode can deliver a 10x or even greater performance boost, especially for writes and concurrent operations.\n\nLet's dive in and see how.\n\n\n  \n  \n  The Bottleneck: Understanding Traditional Journaling\n\n\nBy default, SQLite operates in DELETE journal Line truncated
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+{"type":"tool_use","timestamp":1788905092413,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"type":"tool","tool":"webfetch","callID":"call_3ad029af72694e328e9ef8df","state":{"status":"completed","input":{"format":"markdown","url":"https://pytest-benchmark.readthedocs.io/en/latest/index.html"},"output":" \n\nContents Menu Expand Light mode Dark mode Auto light/dark, in light mode Auto light/dark, in dark mode [Skip to content](#furo-main-content) \n\n[ pytest-benchmark 5.3.0 documentation ](#)\n\n* [Installation](https://pytest-benchmark.readthedocs.io/en/latest/installation.html)\n* [Usage](https://pytest-benchmark.readthedocs.io/en/latest/usage.html)\n* [Calibration](https://pytest-benchmark.readthedocs.io/en/latest/calibration.html)\n* [Pedantic mode](https://pytest-benchmark.readthedocs.io/en/latest/pedantic.html)\n* [Comparing past runs](https://pytest-benchmark.readthedocs.io/en/latest/comparing.html)\n* [Hooks](https://pytest-benchmark.readthedocs.io/en/latest/hooks.html)\n* [Frequently Asked Questions](https://pytest-benchmark.readthedocs.io/en/latest/faq.html)\n* [Glossary](https://pytest-benchmark.readthedocs.io/en/latest/glossary.html)\n* [Contributing](https://pytest-benchmark.readthedocs.io/en/latest/contributing.html)\n* [Authors](https://pytest-benchmark.readthedocs.io/en/latest/authors.html)\n* [Changelog](https://pytest-benchmark.readthedocs.io/en/latest/changelog.html)\n\n[ Back to top ](#) \n\n[ View this page ](https://github.com/ionelmc/pytest-benchmark/blob/master/docs/index.rst?plain=true \"View this page\") \n\n[ Edit this page ](https://github.com/ionelmc/pytest-benchmark/edit/master/docs/index.rst \"Edit this page\") \n\n# Welcome to pytest-benchmark’s documentation![¶](#welcome-to-pytest-benchmark-s-documentation \"Link to this heading\")\n\nThis plugin provides a benchmark fixture. This fixture is a callable object that will benchmark any function passed to it.\n\nNotable features and goals:\n\n* Sensible defaults and automatic calibration for micro-benchmarks\n* Good integration with pytest\n* Comparison and regression tracking\n* Exhaustive statistics\n* JSON export\n\nExamples:\n\ndef something(duration=0.000001):\n    \"\"\"\n    Function that needs some serious benchmarking.\n    \"\"\"\n    time.sleep(duration)\n    # You may return anything you want, like the result of a computation\n    return 123\n\ndef test_my_stuff(benchmark):\n    # benchmark something\n    result = benchmark(something)\n\n    # Extra code, to verify that the run completed correctly.\n    # Sometimes you may want to check the result, fast functions\n    # are no good if they return incorrect results :-)\n    assert result == 123\n\ndef test_my_stuff_different_arg(benchmark):\n    # benchmark something, but add some arguments\n    result = benchmark(something, 0.001)\n    assert result == 123\n\n## Screenshots[¶](#screenshots \"Link to this heading\")\n\nNormal run:\n\n![Screenshot of py.test summary](https://github.com/ionelmc/pytest-benchmark/raw/master/docs/screenshot.png) \n\nCompare mode (`--benchmark-compare`):\n\n![Screenshot of py.test summary in compare mode](https://github.com/ionelmc/pytest-benchmark/raw/master/docs/screenshot-compare.png) \n\nHistogram (`--benchmark-histogram`):\n\n![Histogram sample](https://cdn.rawgit.com/ionelmc/pytest-benchmark/94860cc8f47aed7ba4f9c7e1380c2195342613f6/docs/sample-tests_test_normal.py_test_xfast_parametrized%5B0%5D.svg) \n\n> Also, it has [nice tooltips](https://cdn.rawgit.com/ionelmc/pytest-benchmark/master/docs/sample.svg).\n\n# User guide[¶](#user-guide \"Link to this heading\")\n\n* [Installation](https://pytest-benchmark.readthedocs.io/en/latest/installation.html)\n* [Usage](https://pytest-benchmark.readthedocs.io/en/latest/usage.html)\n  * [Commandline options](https://pytest-benchmark.readthedocs.io/en/latest/usage.html#commandline-options)\n  * [Markers](https://pytest-benchmark.readthedocs.io/en/latest/usage.html#markers)\n  * [Extra info](https://pytest-benchmark.readthedocs.io/en/latest/usage.html#extra-info)\n  * [Patch utilities](https://pytest-benchmark.readthedocs.io/en/latest/usage.html#patch-utilities)\n* [Calibration](https://pytest-benchmark.readthedocs.io/en/latest/calibration.html)\n  * [How many rounds?](https://pytest-benchmark.readthedocs.io/en/latest/calibration.html#how-many-rounds)\n* [Pedantic mode](https://pytest-benchmark.readthedocs.io/en/latest/pedantic.html)\n  * [Reference](https://pytest-benchmark.readthedocs.io/en/latest/pedantic.html#reference)\n* [Comparing past runs](https://pytest-benchmark.readthedocs.io/en/latest/comparing.html)\n  * [Comparing outside of pytest](https://pytest-benchmark.readthedocs.io/en/latest/comparing.html#comparing-outside-of-pytest)\n  * [Plotting](https://pytest-benchmark.readthedocs.io/en/latest/comparing.html#plotting)\n* [Hooks](https://pytest-benchmark.readthedocs.io/en/latest/hooks.html)\n  * [pytest\\_benchmark\\_compare\\_machine\\_info()](https://pytest-benchmark.readtheLine truncated
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For example you can create queue that is shared between threads. First thread that fetches data from the web enqueues this data in the shared queue. Another thread that owns database connection dequeues data from the queue and passes it to the database. </p>\n\n\n=== ANSWER score 20 accepted: False\n<p>The following found on <a href=\"http://mail.python.org/pipermail/python-list/2010-March/1239789.html\" rel=\"noreferrer\">mail.python.org.pipermail.1239789</a>\n<br/><br/>\nI have found the solution. I don't know why python documentation has not a single word about this option.  So we have to add a new keyword argument to connection function \nand we will be able to create cursors out of it in different thread. So use:</p>\n\n<pre><code>sqlite.connect(\":memory:\", check_same_thread = False)\n</code></pre>\n\n<p>works out perfectly for me. Of course from now on I need to take care \nof safe multithreading access to the db. Anyway thx all for trying to help.</p>\n\n\n=== ANSWER score 15 accepted: False\n<p>Switch to <a href=\"http://docs.python.org/library/multiprocessing.html\" rel=\"noreferrer\">multiprocessing</a>. It is much better, scales well, can go beyond the use of multiple cores by using multiple CPUs, and the interface is the same as using python threading module.</p>\n\n<p>Or, as Ali suggested, just use <a href=\"http://www.sqlalchemy.org/docs/05/reference/sqlalchemy/pooling.html#sqlalchemy.pool.SingletonThreadPool\" rel=\"noreferrer\">SQLAlchemy's thread pooling mechanism</a>. It will handle everything for you automatically and has many extra features, just to quote some of them:</p>\n\n<ol>\n<li>SQLAlchemy includes dialects for SQLite, Postgres, MySQL, Oracle, MS-SQL, Firebird, MaxDB, MS Access, Sybase and Informix; IBM has also released a DB2 driver. So you don't have to rewrite your application if you decide to move away from SQLite.</li>\n<li>The Unit Of Work system, a central part of SQLAlchemy's Object Relational Mapper (ORM), organizes pending create/insert/update/delete operations into queues and flushes them all in one batch. To accomplish this it performs a topological \"dependency sort\" of all modified items in the queue so as to honor foreign key constraints, and groups redundant statements together where they can sometimes be batched even further. This produces the maxiumum efficiency and transaction safety, and minimizes chances of deadlocks.</li>\n</ol>\n\n\n","metadata":{"output":"=== ANSWER score 214 accepted: False\n<p>Contrary to popular belief, newer versions of sqlite3 <strong>do</strong> support access from multiple threads.</p>\n\n<p>This can be enabled via optional keyword argument <code>check_same_thread</code>:</p>\n\n<pre><code>sqlite.connect(\":memory:\", check_same_thread=False)\n</code></pre>\n\n\n=== ANSWER score 54 accepted: True\n<p>You can use consumer-producer pattern. For example you can create queue that is shared between threads. First thread that fetches data from the web enqueues this data in the shared queue. Another thread that owns database connection dequeues data from the queue and passes it to the database. </p>\n\n\n=== ANSWER score 20 accepted: False\n<p>The following found on <a href=\"http://mail.python.org/pipermail/python-list/2010-March/1239789.html\" rel=\"noreferrer\">mail.python.org.pipermail.1239789</a>\n<br/><br/>\nI have found the solution. I don't know why python documentation has not a single word about this option.  So we have to add a new keyword argument to connection function \nand we will be able to create cursors out of it in different thread. So use:</p>\n\n<pre><code>sqlite.connect(\":memory:\", check_same_thread = False)\n</code></pre>\n\n<p>works out perfectly for me. Of course from now on I need to take care \nof safe multithreading access to the db. Anyway thx all for trying to help.</p>\n\n\n=== ANSWER score 15 accepted: False\n<p>Switch to <a href=\"http://docs.python.org/library/multLine truncated
+{"type":"step_finish","timestamp":1788905129867,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"id":"prt_g001a0830e0777001XeLSdd018","reason":"tool-calls","snapshot":"f878a57ca77c11229d3d098ef912f33c8f30d4a9","messageID":"msg_g001a0830dd44e0018Xur0Z1Jf","sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","type":"step-finish","tokens":{"total":63710,"input":407,"output":135,"reasoning":0,"cache":{"write":0,"read":63168}},"cost":0}}
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+{"type":"tool_use","timestamp":1788905239776,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"type":"tool","tool":"write","callID":"call_f6899f12aff44bc091df2541","state":{"status":"completed","input":{"content":"{\n  \"process_id\": \"research-262-r1\",\n  \"issue\": 262,\n  \"round\": 1,\n  \"stage\": \"OUTWARD_READING\",\n  \"title\": \"sqlite WAL performance in concurrent Python applications (acceptance-test question, repo-specific)\",\n  \"method_note\": \"Primary sources fetched and read in full this stage plus in the prior partially-completed OUTWARD_READING session (ses_-ffe5f7d08ef0effe7822prgaw, which read S1-S3). No new search queries generated, per stage contract. Claims below carry source IDs (S1-S10); repo claims from INWARD (I1-I5) are referenced for mapping only.\",\n  \"sources\": {\n    \"S1\": {\n      \"url\": \"https://sqlite.org/wal.html\",\n      \"type\": \"official_docs\",\n      \"authority\": \"high (canonical SQLite documentation)\",\n      \"read_in\": \"prior session (ses_-ffe5f7d08ef0effe7822prgaw); claims verified against that session's extraction\",\n      \"limitations\": [\"Documents C-library behavior; Python sqlite3 module wraps the same library so semantics carry over, but Python-side ergonomics (isolation_level, implicit transactions) are not covered by this source\"]\n    },\n    \"S2\": {\n      \"url\": \"https://sqlite.org/c3ref/wal_checkpoint_v2.html\",\n      \"type\": \"official_docs\",\n      \"authority\": \"high (canonical SQLite C API reference)\",\n      \"read_in\": \"prior session\",\n      \"limitations\": [\"C API reference; PRAGMA wal_checkpoint exposes the same tuple (busy, log, checkpointed) per S5, but the C-API framing (pnLog/pnCkpt out-params) is not literally what Python callers see\"]\n    },\n    \"S3\": {\n      \"url\": \"https://github.com/joedougherty/sqlite3_concurrent_writes_test_suite\",\n      \"type\": \"repro_test_suite_github\",\n      \"authority\": \"medium (small public repo: 22 stars, 3 forks, 20 commits; author's own caveats are candid)\",\n      \"read_in\": \"prior session (README)\",\n      \"limitations\": [\"No busy_timeout/timeout configuration\", \"Write-only contention; no reader/writer mix\", \"No WAL-size or checkpoint observation\", \"Small scale (ceiling found ~500 simultaneous single-row inserts)\", \"Tests threads/processes against one DB but not a separate-process RW+RO mix\"]\n    },\n    \"S4\": {\n      \"url\": \"https://raw.githubusercontent.com/necat101/sqlite-deployment-safety-lab/master/README.md\",\n      \"type\": \"repro_lab_github\",\n      \"authority\": \"medium (README reports validated experiment output; experiments are Python scripts committed in repo; grounded in a real production incident via HN thread #47637353)\",\n      \"limitations\": [\"README summarizes results; per-experiment scripts were not individually read this stage\", \"Experiment 2 note is the author's own: controlled tests show NO data loss without SIGTERM/unhandled-SQLITE_BUSY\", \"Production-incident generalization comes from one anecdotal incident (Ultrathink.art)\"]\n    },\n    \"S5\": {\n      \"url\": \"https://www.sqliteforum.com/p/checkpoint-algorithms-and-wal-performance\",\n      \"type\": \"engineering_writeup_newsletter\",\n      \"authority\": \"medium-low (Substack-style explainer 'SQLite Forum' by Jenny Muralidharan, May 2026; technically consistent with S1/S2 but is not sqlite.org)\",\n      \"limitations\": [\"Not an official SQLite source despite the domain name\", \"No measurements of its own; all claims qualitative\", \"Minor imprecision: says auto-checkpoint 'happens in the background by a reader connection' — S1 states the COMMITTING thread runs it (this source's framing is wrong per S1)\"]\n    },\n    \"S6\": {\n      \"url\": \"https://github.com/mouadja02/skills/blob/main/skills/databases/sqlite-wal-checkpoint-starvation-diagnostics/SKILL.md\",\n      \"type\": \"diagnostic_runbook\",\n      \"authority\": \"medium (operational runbook; explicitly separates sourced facts from original operational guidance; cites sqlite.org docs and real issue trackers)\",\n      \"limitations\": [\"Operational recommendations (alert ratios, sample counts, escalation order) are author-declared 'not SQLite guarantees'\", \"Issue references (Syncthing #10559, OpenCode #37495, Codex #30517) were not independently opened this stage\"]\n    },\n    \"S7\": {\n      \"url\": \"https://dev.to/odd_background_328/reproduce-sqlite-wal-checkpoint-starvation-with-one-forgotten-reader-4jfo\",\n      \"type\": \"engineering_writeup_repro\",\n      \"authority\": \"medium-low (individual practitioner post, Jul 2026, with one substantive expert comment; methodology is coherent and cites sqlite.org/wal.html for the end-mark mechanism)\",\n      \"limitations\": [\"No raw numbers published; claims are about the drill design, not measured results\", \"Single author, no peer review\"]\n    },\n    \"S8\": {\n      \"url\": \"https:/Line truncated
+{"type":"step_finish","timestamp":1788905239802,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"id":"prt_g001a0830fb4df0011VuesD2at","reason":"tool-calls","snapshot":"df3a7cef94ef70ddd656e7112645c86c5f3e16ae","messageID":"msg_g001a0830e07a9001MKP1i1O2V","sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","type":"step-finish","tokens":{"total":69549,"input":746,"output":5187,"reasoning":0,"cache":{"write":0,"read":63616}},"cost":0}}
+{"type":"step_start","timestamp":1788905249238,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"id":"prt_g001a0830fd9d5001DEQnxbaKT","messageID":"msg_g001a0830fb519001EiA8yDTTE","sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","snapshot":"e5c0a925b104b1e13fe1f28a8f977f8e38a5d869","type":"step-start"}}
+{"type":"text","timestamp":1788905262924,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"id":"prt_g001a0830fda5e002o7BlXI32C","messageID":"msg_g001a0830fb519001EiA8yDTTE","sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","type":"text","text":"Stage artifact written to `/mnt/workdrive/research-stage/research/issue-262/outward_reading.json`. Summary of the extraction:\n\n## OUTWARD_READING artifact — research-262-r1 (issue 262)\n\n**Sources read (11, IDs S1–S11):** sqlite.org/wal.html (S1) and wal_checkpoint_v2.html (S2) + joedougherty test suite (S3) carried from the prior partially-completed reading session; this session read S4 sqlite-deployment-safety-lab (HN #47637353 repro lab), S5 sqliteforum.com checkpoint guide, S6 WAL checkpoint-starvation diagnostic runbook, S7 dev.to one-forgotten-reader repro, S8 productionhardening.org (credibility unverified — anonymous site), S9 dev.to \"10x\" post (low authority, contains a factual error), S10 pytest-benchmark docs/PyPI, S11 Stack Overflow 393554 (via Stack Exchange API after 403 on direct fetch).\n\n**Claims extracted (19, O1–O19), highlights:**\n- **O1/O4 (S1, authoritative):** WAL = readers don't block writers, but only ONE writer at a time; SQLITE_BUSY still possible in WAL; WAL mode is persistent across connections; same-host only. → The acceptance test must not assert WAL raises multi-writer throughput.\n- **O2/O3 (S1):** reader \"end marks\" → long read txn starves checkpoints → unbounded WAL growth; read perf degrades with WAL size; auto-checkpoint (1000 pages) runs on the **committing** thread → tail-latency spikes. Measurable acceptance signals.\n- **O6 (S2):** `PRAGMA wal_checkpoint(PASSIVE)` returns the (busy, log, checkpointed) tuple — the non-blocking observation primitive for the test.\n- **O7/O8 (S3):** closest prior-art harness (pytest + multiprocessing, lock-error detection, ~500-writer ceiling); author's own finding that WAL didn't raise the concurrent-write ceiling.\n- **O9/O10 (S4):** incident-grounded failure modes (overlapping multi-process writers, SIGTERM mid-transaction, unhandled SQLITE_BUSY) + validated repro experiments.\n- **O11–O13 (S5–S7):** PASSIVE busy=0 ≠ completion; wal_autocheckpoint is a threshold not a guarantee; S7 gives a ready Given/When/Then starvation drill (hold reader → 10k writes → release reader → assert checkpoint resumes and WAL converges).\n- **O15 (S8):** failure-code matrix (BUSY/FULL/PROTOCOL/READONLY/IOERR/CORRUPT) — mechanism-level credible, numbers unattributed; quarantined for ADVERSARIAL.\n- **O16/O19 (S9, S5):** the \"10x\" claim is unsubstantiated; both secondary sources wrongly say auto-checkpoint runs on a reader connection — refuted in favor of S1, flagged so ADVERSARIAL doesn't inherit it.\n\n**Key limitations:** S1–S3 carried forward from prior session's verified extraction (not re-fetched); S8 anonymous/unverified; only claims-level reading of S3/S4 repos; ~10 low-priority discovery URLs deliberately not read; no measurements run (reading stage).\n\n**Mapping to repo (I1–I5):** per-call fresh connections in warm_router/curator → O14's re-apply-PRAGMA-per-connection requirement + sqlite-vec load cost as the benchmarkable overhead (O17); auto_tasks/multi-process writers → O5 data-race precondition and O9 scenario; rune_tui error sniffing → residual SQLITE_BUSY surfacing.\n\n```\nStageCompleted: OUTWARD_READING\n```","time":{"start":1788905249375,"end":1788905262922}}}
+{"type":"step_finish","timestamp":1788905262949,"sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","part":{"id":"prt_g001a083100f4c001dWfPfnUBP","reason":"stop","snapshot":"9dbbc164bf085fce5a0b86a4101243540d64fc60","messageID":"msg_g001a0830fb519001EiA8yDTTE","sessionID":"ses_-ffe5f7cf348c4ffeSAHmubYWN","type":"step-finish","tokens":{"total":70423,"input":5174,"output":865,"reasoning":0,"cache":{"write":0,"read":64384}},"cost":0}}
@@ -5,6 +5,10 @@ NOT the production research worker. This worker produces known, structured
 artifacts for each stage so the pipeline plumbing (persistence, handoff,
 gating, retry) can be tested in seconds instead of 20-minute real MiMo runs.

+Canonical pipeline (RP2, handoff 2026-09-08):
+  ISSUE → INWARD → OUTWARD → APPLICABILITY
+  → optional INNOVATION → ADVERSARIAL → SYNTHESIS → QUALIFY
+
 Per the authoritative build prompt §18:
  "DETERMINISTIC TESTS PROVE THE PIPE. REAL MIMO DOES THE RESEARCH."
 """
@@ -17,24 +21,23 @@ from pathlib import Path
 sys.path.insert(0, str(Path(__file__).parent))
 from research_task_tree import ResearchTaskTree, STAGES

-
-def fake_define(tree: ResearchTaskTree) -> dict:
+def fake_issue_gate(tree: ResearchTaskTree) -> dict:
+    """ISSUE is deterministic: the Gitea issue content is the DEFINE replacement.
+    The fake worker emits the compiled gate artifact directly."""
    issue = tree.issue
    return {
-        "question": f"Research question for issue #{issue}",
-        "question_type": "mixed",
-        "sub_questions": ["Q1: what exists?", "Q2: what is better?"],
-        "evidence_classes": ["repo", "software", "current-tech"],
-        "sufficient_evidence": "2+ sources per sub-question",
-        "expected_artifact": "synthesis.json",
+        "goal": f"Capability from issue #{issue}",
+        "why": "recorded in issue body",
+        "constraints": ["must not regress existing behavior"],
+        "acceptance": ["issue acceptance criteria"],
+        "quality": "BUILDABLE",
    }

-
 def fake_inward(tree: ResearchTaskTree) -> dict:
-    # Assert DEFINE artifact was actually supplied
+    # Assert ISSUE-gate artifact was actually supplied
    prior = tree.get_prior_artifacts("INWARD")
-    define = prior.get("DEFINE", {})
-    assert define.get("question"), "INWARD: DEFINE artifact missing — evidence handoff broken"
+    issue_gate = prior.get("ISSUE", {})
+    assert issue_gate.get("goal"), "INWARD: ISSUE-gate artifact missing — evidence handoff broken"
    return {
        "claims": [
            {"id": "I1", "claim": "memory_store uses FTS5", "evidence": ["src/rune/memory_store.py:86"], "status": "CURRENT"},
@@ -42,71 +45,100 @@ def fake_inward(tree: ResearchTaskTree) -> dict:
        ],
    }

-
-def fake_outward_discovery(tree: ResearchTaskTree) -> dict:
-    prior = tree.get_prior_artifacts("OUTWARD_DISCOVERY")
+def fake_outward(tree: ResearchTaskTree) -> dict:
+    """Unified OUTWARD (RP3): one research task, discovery + reading as
+    SUBSECTIONS of one artifact — not separate stages."""
+    prior = tree.get_prior_artifacts("OUTWARD")
    inward = prior.get("INWARD", {})
    claims = inward.get("claims", [])
-    assert len(claims) >= 2, f"OUTWARD_DISCOVERY: expected ≥2 INWARD claims, got {len(claims)}"
+    assert len(claims) >= 2, f"OUTWARD: expected ≥2 INWARD claims, got {len(claims)}"
    return {
-        "queries": ["fts5 hybrid search", "sqlite-vec alternatives"],
-        "tool_receipts": [{"tool": "webfetch", "query": "fts5 hybrid search", "status": "completed"}],
-        "sources": [
-            {"id": "O1", "url": "https://sqlite.org/fts5.html", "title": "FTS5", "source_class": "software"},
-            {"id": "O2", "url": "https://github.com/asg017/sqlite-vec", "title": "sqlite-vec", "source_class": "software"},
-        ],
+        "discovery": {
+            "queries": ["fts5 hybrid search", "sqlite-vec alternatives"],
+            "tool_receipts": [{"tool": "webfetch", "query": "fts5 hybrid search", "status": "completed"}],
+            "sources": [
+                {"id": "O1", "url": "https://sqlite.org/fts5.html", "title": "FTS5", "source_class": "software"},
+                {"id": "O2", "url": "https://github.com/asg017/sqlite-vec", "title": "sqlite-vec", "source_class": "software"},
+            ],
+        },
+        "reading": {
+            "evidence": [
+                {"id": "E1", "source_id": "O1", "url": "https://sqlite.org/fts5.html",
+                 "claim": "FTS5 supports external content tables", "limitations": ["token porter only"]},
+                {"id": "E2", "source_id": "O2", "url": "https://github.com/asg017/sqlite-vec",
+                 "claim": "vec0 virtual tables for embedding search", "limitations": []},
+            ],
+        },
    }

-
-def fake_outward_reading(tree: ResearchTaskTree) -> dict:
-    prior = tree.get_prior_artifacts("OUTWARD_READING")
-    discovery = prior.get("OUTWARD_DISCOVERY", {})
-    sources = discovery.get("sources", [])
-    assert len(sources) >= 2, f"OUTWARD_READING: expected ≥2 discovered sources, got {len(sources)}"
+def fake_applicability(tree: ResearchTaskTree) -> dict:
+    """APPLICABILITY (RP4): classify researched mechanisms against Rune's reality."""
+    prior = tree.get_prior_artifacts("APPLICABILITY")
+    outward = prior.get("OUTWARD", {})
+    sources = outward.get("discovery", {}).get("sources", [])
+    assert len(sources) >= 2, f"APPLICABILITY: expected ≥2 OUTWARD sources, got {len(sources)}"
    return {
-        "evidence": [
-            {"id": "E1", "source_id": "O1", "url": "https://sqlite.org/fts5.html",
-             "claim": "FTS5 supports external content tables", "limitations": ["token porter only"]},
-            {"id": "E2", "source_id": "O2", "url": "https://github.com/asg017/sqlite-vec",
-             "claim": "vec0 virtual tables for embedding search", "limitations": []},
+        "route": "INNOVATION_WARRANTED",
+        "candidates": [
+            {
+                "id": "M1",
+                "source_ids": ["O1", "O2"],
+                "classification": "APPLICABLE_WITH_ADAPTATION",
+                "integration_point": "memory_store.recall",
+                "benefit": "hybrid recall",
+                "cost": "low",
+                "architectural_fit": "fits memory authority",
+                "authority_implications": "none",
+                "risks": ["extension availability"],
+                "required_adaptation": ["fallback when extension missing"],
+                "evidence": ["E1", "E2"],
+            },
        ],
    }

-
 def fake_adversarial(tree: ResearchTaskTree) -> dict:
    prior = tree.get_prior_artifacts("ADVERSARIAL")
-    reading = prior.get("OUTWARD_READING", {})
-    evidence = reading.get("evidence", [])
+    outward = prior.get("OUTWARD", {})
+    evidence = outward.get("reading", {}).get("evidence", [])
    assert len(evidence) >= 2, f"ADVERSARIAL: expected ≥2 evidence items, got {len(evidence)}"
    return {
+        "disposition": "SURVIVES_WITH_MITIGATIONS",
        "counter_evidence": [
            {"id": "A1", "source_id": "O1", "claim": "FTS5 porter tokenizer may not handle all languages",
             "derived_from": ["E1"], "limitations": ["minor"]},
        ],
+        "surviving_candidates": ["M1"],
+        "rejected_candidates": [],
+        "required_mitigations": ["mode labeling"],
+        "falsification_tests": ["FT1: harness run with embedding backend unreachable"],
+        "attacks": [
+            {"id": "A1", "target_candidate": "M1", "dimension": "failure modes",
+             "finding": "tokenizer coverage", "evidence": ["E1"], "severity": "minor"},
+        ],
    }

-
 def fake_innovation(tree: ResearchTaskTree) -> dict:
    prior = tree.get_prior_artifacts("INNOVATION")
    inward = prior.get("INWARD", {})
-    reading = prior.get("OUTWARD_READING", {})
-    adversarial = prior.get("ADVERSARIAL", {})
+    outward = prior.get("OUTWARD", {})
+    applicability = prior.get("APPLICABILITY", {})
    inward_claims = [c["id"] for c in inward.get("claims", [])]
-    evidence_ids = [e["id"] for e in reading.get("evidence", [])]
-    adversarial_ids = [a["id"] for a in adversarial.get("counter_evidence", [])]
+    evidence_ids = [e["id"] for e in outward.get("reading", {}).get("evidence", [])]
+    applicable = [c["id"] for c in applicability.get("candidates", [])]
    assert inward_claims, "INNOVATION: no INWARD claims received"
    assert evidence_ids, "INNOVATION: no OUTWARD evidence received"
+    assert applicable, "INNOVATION: no APPLICABILITY candidates received"
    return {
+        "conclusion": "ADOPT",
        "candidates": [
            {"id": "C1", "category": "ADAPT", "proposal": "hybrid FTS+vec recall",
-             "derived_from": inward_claims[:1] + evidence_ids[:1] + adversarial_ids[:1],
+             "derived_from": inward_claims[:1] + evidence_ids[:1] + applicable[:1],
             "composition_of": [], "novelty": "adapted",
             "expected_gain": "better recall", "risks": ["latency"],
             "kill_test": "recall returns >0 rows"},
        ],
    }

-
 def fake_synthesis(tree: ResearchTaskTree) -> dict:
    prior = tree.get_prior_artifacts("SYNTHESIS")
    innovation = prior.get("INNOVATION", {})
@@ -115,7 +147,7 @@ def fake_synthesis(tree: ResearchTaskTree) -> dict:
    return {
        "selected_design": "hybrid FTS+vec recall",
        "rejected_alternatives": [{"design": "pure FTS", "reason": "E2 shows vec adds value"}],
-        "evidence_used": ["I1", "E1", "E2", "A1", "C1"],
+        "evidence_used": ["I1", "E1", "E2", "A1", "M1", "C1"],
        "architecture_implications": ["memory_store.recall modified"],
        "files_affected": ["src/rune/memory_store.py"],
        "contracts": ["recall returns thresholded rows"],
@@ -125,39 +157,37 @@ def fake_synthesis(tree: ResearchTaskTree) -> dict:
        "build_instructions": ["modify recall() in memory_store.py", "add tests"],
    }

-
 def fake_qualify(tree: ResearchTaskTree) -> dict:
    prior = tree.get_prior_artifacts("QUALIFY")
    synthesis = prior.get("SYNTHESIS", {})
    assert synthesis.get("selected_design"), "QUALIFY: no synthesis received"
-    # First QUALIFY pass: return MORE_RESEARCH with blocking unknown
-    if not tree.state.get("blocking_unknowns"):
+    # First QUALIFY pass: build instructions incomplete → REFINE_SYNTHESIS
+    # (narrowed semantics: synthesis-only refinement, no research repeat).
+    # Record the refine round in the tree so the workflow records a 2nd round.
+    if tree.state.get("qualify_outcome") != "REFINE_SYNTHESIS":
        return {
-            "disposition": "MORE_RESEARCH",
-            "blocking_unknowns": [
-                {"id": "U1", "question": "does sqlite-vec work with WAL mode?", "type": "current-tech"}
-            ],
+            "outcome": "REFINE_SYNTHESIS",
+            "reason": "rollback/recovery not specified",
+            "build_instructions": synthesis.get("build_instructions", []),
        }
-    # After targeted research: PROCEED
+    # After synthesis refinement: PROCEED
    return {
-        "disposition": "PROCEED",
+        "outcome": "PROCEED",
        "selected_design": synthesis.get("selected_design", ""),
        "evidence_used": synthesis.get("evidence_used", []),
    }

-
 FAKE_WORKERS = {
-    "DEFINE": fake_define,
+    "ISSUE": fake_issue_gate,
    "INWARD": fake_inward,
-    "OUTWARD_DISCOVERY": fake_outward_discovery,
-    "OUTWARD_READING": fake_outward_reading,
+    "OUTWARD": fake_outward,
+    "APPLICABILITY": fake_applicability,
    "ADVERSARIAL": fake_adversarial,
    "INNOVATION": fake_innovation,
    "SYNTHESIS": fake_synthesis,
    "QUALIFY": fake_qualify,
 }

-
 def run_fake_stage(tree: ResearchTaskTree) -> dict:
    stage = tree.current_stage
    worker = FAKE_WORKERS.get(stage)
@@ -165,7 +195,6 @@ def run_fake_stage(tree: ResearchTaskTree) -> dict:
        raise ValueError(f"no fake worker for stage {stage}")
    return worker(tree)

-
 def main_with(argv: list[str]) -> int:
    import argparse
    parser = argparse.ArgumentParser(description="Fake stage worker for pipeline testing")
@@ -179,35 +208,13 @@ def main_with(argv: list[str]) -> int:
    if tree.is_complete:
        print("research tree already complete")
        return 0
-
-    stage = tree.current_stage
-    print(f"fake-worker: {stage} (issue #{args.issue}, round {args.round})")
-
    artifact = run_fake_stage(tree)
-    next_stage = tree.advance(artifact)
-    print(f"  completed {stage} → next: {next_stage}")
-
-    # Save the artifact
-    os.makedirs(args.out_dir, exist_ok=True)
-    out_path = os.path.join(args.out_dir, f"{stage}.json")
-    with open(out_path, "w") as f:
-        json.dump(artifact, f, indent=2, default=str)
-
-    # If QUALIFY said MORE_RESEARCH, handle the branch
-    if stage == "QUALIFY" and artifact.get("disposition") == "MORE_RESEARCH":
-        unknowns = artifact.get("blocking_unknowns", [])
-        branches = tree.more_research(unknowns)
-        print(f"  MORE_RESEARCH: {len(branches)} targeted branch(es)")
-        for b in branches:
-            print(f"    U{b['unknown'].get('id','?')}: stages={b['stages']}, round={b['round']}")
-    elif stage == "QUALIFY":
-        tree.state["status"] = "COMPLETE"
-        tree.save()
-        print("  research COMPLETE")
-
+    out_dir = Path(args.out_dir)
+    out_dir.mkdir(parents=True, exist_ok=True)
+    stage = tree.current_stage
+    (out_dir / f"stage_{stage}.json").write_text(json.dumps(artifact, indent=2))
+    print(f"fake stage {stage} complete")
    return 0

-
 if __name__ == "__main__":
-    import os
-    sys.exit(main_with(sys.argv))
+    raise SystemExit(main_with(sys.argv))
@@ -1,330 +0,0 @@
-#!/usr/bin/env python3
-"""research_backend.py — Rune's local research execution backend (corrected model).
-
-Gitea triggers and ratifies cognition. Rune/MiMo performs cognition. The TUI shows the live process.
-
-This is a long-lived process running on Nick's machine that:
-  1. Polls Gitea for stage-ready events (lightweight, not a sleep/poll for cognition)
-  2. Compiles the stage prompt from the ResearchTaskTree
-  3. Invokes mimo locally (subprocess — not Gitea Actions)
-  4. Streams events to the TUI (via the event relay)
-  5. Validates the artifact
-  6. Records the result in Gitea
-  7. Dispatches the next stage
-
-The Gitea Actions workflow is now just a TRIGGER that sets a label.
-The actual MiMo cognition runs HERE, on nick's machine, with full event streaming to the TUI.
-
-Usage:
-  python3 scripts/research_backend.py --issue 260 --round 1
-  python3 scripts/research_backend.py --watch  # long-lived, watches for new issues
-"""
-from __future__ import annotations
-
-import json
-import os
-import subprocess
-import sys
-import time
-import urllib.request
-from pathlib import Path
-
-sys.path.insert(0, str(Path(__file__).parent))
-from research_task_tree import ResearchTaskTree, STAGES, STAGE_ARTIFACT_FILES
-from research_prompt_compiler import compile_research_prompt
-from research_artifact import validate
-from research_event_relay import ResearchEventRelay
-
-GITEA_BASE = os.environ.get("GITEA_SERVER", "https://gitea.thingscouldgetdicey.online") + "/api/v1/repos/conductor/rune"
-GITEA_TOKEN = os.environ.get("GITEA_TOKEN", "")
-MIMO_BIN = os.environ.get("MIMO_BIN", "/var/lib/gitea-desktop-runner/bin/mimo")
-MIMO_MODEL = os.environ.get("MIMO_MODEL", "Verboo Code/glm-5.3-flash")
-MIMO_AGENT = os.environ.get("MIMO_AGENT", "build")
-POLL_INTERVAL = int(os.environ.get("RESEARCH_POLL_INTERVAL", "30"))
-
-
-def gitea_api(path: str, method: str = "GET", data=None) -> tuple:
-    req = urllib.request.Request(
-        GITEA_BASE + path,
-        data=json.dumps(data).encode() if data else None,
-        headers={"Authorization": f"token {GITEA_TOKEN}", "Content-Type": "application/json"},
-        method=method,
-    )
-    try:
-        with urllib.request.urlopen(req, timeout=30) as r:
-            body = r.read()
-            return r.status, json.loads(body) if body else {}
-    except Exception as e:
-        return 0, {"error": str(e)}
-
-
-def run_stage_local(tree: ResearchTaskTree, out_dir: str) -> dict:
-    """Execute one stage of the research tree using LOCAL mimo (not Gitea Actions).
-    Events stream in real-time to the console/TUI."""
-    from research_event_relay import ResearchEventRelay
-    from research_artifact import validate
-    import re
-
-    stage = tree.current_stage
-    prompt = compile_research_prompt(tree, stage)
-
-    events_path = os.path.join(out_dir, f"stage_{stage}.events.jsonl")
-    err_path = os.path.join(out_dir, f"stage_{stage}.mimo.err.log")
-
-    print(f"\n{'='*60}")
-    print(f"Research #{tree.issue} — {stage}")
-    print(f"Worker: MiMo / {MIMO_MODEL}")
-    print(f"Round: {tree.round}")
-    print(f"{'='*60}\n")
-
-    cmd = [MIMO_BIN, "run", "--agent", MIMO_AGENT, "-m", MIMO_MODEL,
-           "--dangerously-skip-permissions", "--format", "json", prompt]
-
-    relay = ResearchEventRelay(tree, events_path, cmd, err_path)
-    result = relay.run()
-
-    if result["returncode"] != 0:
-        tree.fail(f"mimo exited {result['returncode']}")
-        return {"stage": stage, "status": "FAILED", "error": f"mimo exited {result['returncode']}"}
-
-    if not result["texts"]:
-        error_detail = ""
-        if os.path.exists(err_path):
-            with open(err_path) as f:
-                error_detail = f.read()[-300:]
-        tree.fail(f"no text output. stderr: {error_detail}")
-        return {"stage": stage, "status": "FAILED", "error": "no text output", "stderr": error_detail}
-
-    artifact_text = "\n\n".join(result["texts"])
-    artifact = {
-        "text": artifact_text,
-        "tool_calls": result["event_counts"]["tool_calls"],
-        "event_counts": result["event_counts"],
-        "elapsed": result["elapsed"],
-    }
-
-    # Stage-specific gate validation
-    validation_errors = []
-    if stage in ("OUTWARD_DISCOVERY", "OUTWARD_READING"):
-        url_pat = re.compile(r"https?://[^\s)>]+")
-        urls = [u for u in url_pat.findall(artifact_text) if "gitea.thingscouldgetdicey" not in u]
-        if stage == "OUTWARD_DISCOVERY" and len(set(urls)) < 2:
-            validation_errors.append(f"OUTWARD_DISCOVERY: {len(set(urls))} unique URLs < 2")
-
-    if stage == "INWARD":
-        path_pat = re.compile(r"(?:src|tests|scripts|docs)/[\w./-]+\.py")
-        paths = path_pat.findall(artifact_text)
-        if len(set(paths)) < 2:
-            validation_errors.append(f"INWARD: {len(set(paths))} code paths < 2")
-
-    if stage == "INNOVATION":
-        if "derived_from" not in artifact_text and "evidence" not in artifact_text.lower():
-            validation_errors.append("INNOVATION: no evidence derivation found")
-
-    if validation_errors:
-        # Gate failure: do NOT advance. Record for retry.
-        tree.fail("; ".join(validation_errors))
-        return {
-            "stage": stage,
-            "status": "GATE_FAILED",
-            "errors": validation_errors,
-            "artifact": artifact,
-        }
-
-    # Gate passed — advance the tree
-    next_stage = tree.advance(artifact)
-
-    print(f"\n  ✓ {stage} completed → next: {next_stage}")
-    print(f"  Events: {json.dumps(result['event_counts'])}")
-    print(f"  Elapsed: {result['elapsed']:.0f}s\n")
-
-    return {
-        "stage": stage,
-        "status": "COMPLETED",
-        "next_stage": next_stage,
-        "artifact": artifact,
-        "event_counts": result["event_counts"],
-    }
-
-
-def persist_tree(tree: ResearchTaskTree) -> bool:
-    """Persist the task tree to Gitea via the contents API."""
-    tree_content = json.dumps(tree.state, indent=2, default=str)
-    tree_path = f"research/issue-{tree.issue}/task_tree.json"
-
-    status, current = gitea_api(f"/contents/{tree_path}?ref=master")
-    sha = current.get("sha") if status == 200 else None
-
-    import base64
-    put_data = {
-        "message": f"research: persist tree after {tree.current_stage} (issue #{tree.issue}, round {tree.round})",
-        "content": base64.b64encode(tree_content.encode()).decode(),
-        "branch": "master",
-    }
-    if sha:
-        put_data["sha"] = sha
-
-    status, _ = gitea_api(f"/contents/{tree_path}", "PUT", put_data)
-    print(f"  tree persisted: {status}")
-    return status in (200, 201)
-
-
-def post_comment(issue: int, body: str) -> bool:
-    status, _ = gitea_api(f"/issues/{issue}/comments", "POST", {"body": body})
-    return status in (200, 201)
-
-
-def elapsed_str(seconds: float) -> str:
-    return f"{seconds:.1f}s" if seconds < 60 else f"{seconds/60:.1f}m"
-
-
-def run_full_research(issue: int, round_no: int = 1, max_stages: int = 30) -> dict:
-    """Run the complete research process for an issue. Stage-by-stage, locally."""
-    artifact_dir = f"research/issue-{issue}"
-    out_dir = os.path.join(artifact_dir, "runs")
-    tree = ResearchTaskTree(issue=issue, round_no=round_no, artifact_dir=artifact_dir)
-
-    # Try to load persisted state from Gitea
-    status, remote = gitea_api(f"/contents/research/issue-{issue}/task_tree.json?ref=master")
-    if status == 200:
-        import base64
-        remote_state = json.loads(base64.b64decode(remote["content"]).decode())
-        if remote_state.get("completed_stages"):
-            tree.state = remote_state
-            tree.round = remote_state.get("round", round_no)
-            print(f"Loaded persisted state: stage={tree.current_stage}, completed={len(tree.state['completed_stages'])}")
-
-    results = []
-    stage_count = 0
-
-    while stage_count < max_stages:
-        if tree.is_complete:
-            print(f"\n{'='*60}")
-            print(f"Research COMPLETE for issue #{issue}")
-            print(f"{'='*60}")
-            break
-
-        stage = tree.current_stage
-        stage_count += 1
-
-        # DEFINE is DETERMINISTIC — compile the contract from the issue, no MiMo
-        if stage == "DEFINE":
-            from research_define import compile_define_contract
-            status, issue_data = gitea_api(f"/issues/{issue}")
-            if status == 200:
-                contract = compile_define_contract(issue_data)
-                artifact = {"contract": contract, "deterministic": True}
-                next_stage = tree.advance(artifact)
-                print(f"\n✓ DEFINE completed (deterministic, <1s) → next: {next_stage}")
-                print(f"  Type: {contract['question_type']}")
-                print(f"  Required stages: {contract['required_stages']}")
-                persist_tree(tree)
-                continue
-            else:
-                print(f"  Failed to fetch issue #{issue}: {status}")
-                break
-
-        # INWARD: build deterministic context first, then bounded MiMo if needed
-        if stage == "INWARD":
-            from research_define import compile_define_contract
-            from research_inward_context import build_context
-            status, issue_data = gitea_api(f"/issues/{issue}")
-            if status == 200:
-                contract = tree.state["artifacts"].get("DEFINE", {}).get("contract", {})
-                if not contract:
-                    contract = compile_define_contract(issue_data)
-                context = build_context(issue_data, contract)
-
-                if not context["mimo_needed"]:
-                    # Deterministic context is sufficient — no MiMo needed
-                    artifact = {"context": context, "deterministic": True,
-                                "claims": [{"id": f"I{i+1}", "claim": f"Relevant file: {f}",
-                                            "evidence": [f], "status": "CURRENT"}
-                                           for i, f in enumerate(context["candidate_files"][:5])]}
-                    next_stage = tree.advance(artifact)
-                    print(f"\n✓ INWARD completed (deterministic context, {elapsed_str(0.03)}) → next: {next_stage}")
-                    print(f"  Candidate files: {context['candidate_files'][:3]}")
-                    persist_tree(tree)
-                    continue
-                # MiMo needed: bounded prompt over the candidate context only
-                print(f"  INWARD: deterministic context built, MiMo needed for semantic inspection")
-                print(f"  Candidate files: {context['candidate_files'][:5]}")
-
-        # Other stages: use MiMo
-        result = run_stage_local(tree, out_dir)
-        results.append(result)
-
-        # Persist the tree to Gitea
-        persist_tree(tree)
-
-        # Handle the result
-        if result["status"] == "FAILED":
-            print(f"\n✗ {stage} FAILED — process paused")
-            print(f"  Reason: {result.get('error', 'unknown')}")
-            post_comment(issue, f"🔴 **Research paused: {stage} failed**\n\nReason: {result.get('error', 'unknown')}")
-            break
-        elif result["status"] == "GATE_FAILED":
-            print(f"\n⚠ {stage} GATE FAILED — retry needed")
-            print(f"  Errors: {result.get('errors', [])}")
-            # Retry once: don't advance, re-run the same stage
-            # The tree was already failed, so the next iteration will retry
-            continue
-        elif stage == "QUALIFY":
-            disposition = result["artifact"].get("text", "")
-            if "MORE_RESEARCH" in disposition:
-                unknowns = [{"id": f"U{i+1}", "question": ln.strip(), "type": "mixed"}
-                            for i, ln in enumerate(disposition.split("\n"))
-                            if "unknown" in ln.lower() or "blocking" in ln.lower()]
-                if unknowns:
-                    branches = tree.more_research(unknowns)
-                    print(f"\n  MORE_RESEARCH: {len(branches)} targeted branch(es), round {tree.round}")
-                    post_comment(issue, f"🔄 **MORE_RESEARCH (round {tree.round})**\n\nBlocking unknowns:\n" +
-                                 "\n".join(f"- {u['id']}: {u['question']}" for u in unknowns))
-                else:
-                    print("  MORE_RESEARCH but no named unknowns — treating as PROCEED")
-                    tree.state["status"] = "COMPLETE"
-                    tree.save()
-                    break
-            elif "PROCEED" in disposition:
-                tree.state["status"] = "COMPLETE"
-                tree.save()
-                print(f"\n  PROCEED — research complete")
-
-    return {"results": results, "tree": tree}
-
-
-def main_with(argv: list[str]) -> int:
-    import argparse
-    parser = argparse.ArgumentParser(description="Rune research execution backend")
-    parser.add_argument("--issue", type=int, help="Run research for a specific issue")
-    parser.add_argument("--round", type=int, default=1)
-    parser.add_argument("--watch", action="store_true", help="Watch for new research-pending issues")
-    args = parser.parse_args(argv[1:])
-
-    if not GITEA_TOKEN:
-        print("GITEA_TOKEN not set", file=sys.stderr)
-        return 1
-
-    if args.issue:
-        result = run_full_research(args.issue, args.round)
-        return 0 if result["tree"].is_complete or result["tree"].state.get("status") in ("ACTIVE", "RUNNING") else 1
-    elif args.watch:
-        print("Watching for research-pending issues...")
-        while True:
-            status, issues = gitea_api("/issues?state=open&labels=research-pending&limit=5")
-            if status == 200:
-                for issue in issues:
-                    if issue.get("labels") and any(l["name"] == "research-pending" for l in issue["labels"]):
-                        n = issue["number"]
-                        print(f"Found research-pending issue #{n} — starting research")
-                        run_full_research(n)
-                        break
-            time.sleep(POLL_INTERVAL)
-    else:
-        print("Specify --issue N or --watch")
-        return 1
-    return 0
-
-
-if __name__ == "__main__":
-    sys.exit(main_with(sys.argv))
@@ -30,9 +30,13 @@ REPO_INDICATORS = [


 def compile_define_contract(issue: dict) -> dict:
-    """Deterministically compile the research contract from a Gitea issue.
+    """Deterministically compile the issue contract from a Gitea issue.

-    No MiMo needed unless the issue body is too ambiguous to classify.
+    ISSUE is a deterministic intake/gate pseudo-stage (canonical handoff
+    2026-09-08): validates fields, classifies, compiles the contract.
+    No model invocation, no research, no repository browsing.
+    INNOVATION is CONDITIONAL — included only when the route warrants it;
+    the standard researched mechanism may already be sufficient.
    """
    title = issue.get("title", "")
    body = issue.get("body", "") or ""
@@ -64,37 +68,44 @@ def compile_define_contract(issue: dict) -> dict:
    if not sub_questions:
        sub_questions = [f"Address: {title}"]

-    # Determine required stages based on question type
+    # Canonical required stages (ISSUE gate replaces DEFINE; OUTWARD is unified)
    # Every issue gets INWARD (what does Rune currently do?) and SYNTHESIS + QUALIFY
-    required_stages = ["DEFINE", "INWARD"]
+    required_stages = ["ISSUE", "INWARD"]

    if question_type in ("mixed", "current-tech", "academic"):
-        required_stages.extend(["OUTWARD_DISCOVERY", "OUTWARD_READING"])
+        required_stages.append("OUTWARD")

    if question_type in ("mixed", "current-tech") or "adversarial" in full_text:
        required_stages.append("ADVERSARIAL")

-    # INNOVATION only if design choices are needed
+    # INNOVATION is CONDITIONAL: only when design-choice indicators suggest
+    # a credible opportunity for something materially better. Never mandatory.
    design_indicators = ["design", "architecture", "approach", "strategy", "pattern", "choose"]
-    if any(ind in full_text for ind in design_indicators) or question_type == "mixed":
+    innovation_warranted = any(ind in full_text for ind in design_indicators) or question_type == "mixed"
+    if innovation_warranted:
        required_stages.append("INNOVATION")

    required_stages.extend(["SYNTHESIS", "QUALIFY"])

-    # Skipped stages with reasons
-    all_stages = {"DEFINE", "INWARD", "OUTWARD_DISCOVERY", "OUTWARD_READING",
+    # Skipped stages with reasons (canonical stage names only)
+    all_stages = {"ISSUE", "INWARD", "OUTWARD", "APPLICABILITY",
                  "ADVERSARIAL", "INNOVATION", "SYNTHESIS", "QUALIFY"}
    skipped = {}
    for s in sorted(all_stages - set(required_stages)):
-        if s in ("OUTWARD_DISCOVERY", "OUTWARD_READING"):
+        if s == "OUTWARD":
            skipped[s] = "No external factual uncertainty identified in the issue."
        elif s == "ADVERSARIAL":
            skipped[s] = "No design choice requiring adversarial evaluation."
        elif s == "INNOVATION":
-            skipped[s] = "No design choice required; the issue defines the work."
+            # Conditional stage: standard solution may be sufficient
+            skipped[s] = "STANDARD_SOLUTION_SUFFICIENT — INNOVATION is conditional, not ceremonial."
+        elif s == "APPLICABILITY":
+            skipped[s] = "No OUTWARD research to ground against Rune."

-    # Is MiMo needed for ambiguity?
-    needs_mimo = question_type == "repo-specific" and not has_repo and not has_external and len(body) < 50
+    # Ambiguity signal: recorded for the process, NOT a MiMo trigger.
+    # ISSUE never invokes a model; downstream stages decide how to handle
+    # an ambiguous contract via the blocking-unknowns mechanism.
+    ambiguous = question_type == "repo-specific" and not has_repo and not has_external and len(body) < 50

    return {
        "issue": issue.get("number"),
@@ -106,7 +117,11 @@ def compile_define_contract(issue: dict) -> dict:
        "evidence_classes": _evidence_classes(question_type),
        "sufficient_evidence": "≥2 code-path citations for INWARD; ≥2 unique URLs for OUTWARD (if required)",
        "expected_artifact": "synthesis.json",
-        "needs_mimo": needs_mimo,
+        "ambiguous": ambiguous,
+        # COMPATIBILITY ONLY — always False. ISSUE never invokes MiMo;
+        # ambiguity is carried by the `ambiguous` flag instead.
+        # REMOVE AFTER no caller reads needs_mimo.
+        "needs_mimo": False,
        "source": "deterministic",
    }

@@ -121,9 +136,10 @@ def _evidence_classes(question_type: str) -> list[str]:


 def is_ambiguous(issue: dict) -> bool:
-    """Check if the issue is too ambiguous for deterministic classification."""
+    """Check if the issue is too ambiguous for deterministic classification.
+    Ambiguity is a signal for downstream stages — never a MiMo trigger."""
    contract = compile_define_contract(issue)
-    return contract["needs_mimo"]
+    return contract["ambiguous"]


 def main_with(argv: list[str]) -> int:
@@ -30,6 +30,8 @@ class ResearchEventRelay:
            "queries": 0, "sources_discovered": 0, "sources_read": 0,
            "evidence_accepted": 0, "tool_failures": 0, "tool_calls": 0,
        }
+        # Real tool receipts (RP3 evidence chain: QUERY → SOURCE → READ → CLAIM)
+        self.receipts = []
        self.last_useful_event_time = time.time()
        self.stage_start_time = time.time()

@@ -51,13 +53,31 @@ class ResearchEventRelay:
                    url = tool_input["url"]
                    if "duckduckgo" in url or "search" in url:
                        self.event_counts["queries"] += 1
+                        self.receipts.append({
+                            "kind": "QUERY", "tool": tool, "url": url,
+                            "ts": time.time(),
+                        })
                        return "QueryIssued"
                    else:
                        self.event_counts["sources_read"] += 1
+                        self.receipts.append({
+                            "kind": "SOURCE_READ", "tool": tool, "url": url,
+                            "ts": time.time(),
+                        })
                        return "SourceRead"
+                self.receipts.append({
+                    "kind": "TOOL", "tool": tool,
+                    "input_keys": sorted(tool_input.keys()) if isinstance(tool_input, dict) else [],
+                    "ts": time.time(),
+                })
                return "ToolCompleted"
            elif status in ("error", "failed"):
                self.event_counts["tool_failures"] += 1
+                self.receipts.append({
+                    "kind": "TOOL_FAILED", "tool": tool,
+                    "input_keys": sorted(tool_input.keys()) if isinstance(tool_input, dict) else [],
+                    "ts": time.time(),
+                })
                return "ToolFailed"
        return None

@@ -109,6 +129,7 @@ class ResearchEventRelay:
            "returncode": proc.returncode,
            "texts": texts,
            "event_counts": self.event_counts,
+            "receipts": self.receipts,
            "elapsed": time.time() - self.stage_start_time,
        }

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-"""research_task_tree.py — canonical research process state (RSC1).
+"""research_task_tree.py — canonical research process state (RP1/RP2).

 The ResearchTaskTree is the single source of truth for a research process:
 which stage is current, which artifacts are accepted, which questions are
@@ -9,15 +9,21 @@ to Gitea issue labels.
 The tree is the authority. The TUI, MiMo capsules, and Gitea comments are
 projections of this state — not independent truths.

-Stages (in order):
-  DEFINE → INWARD → OUTWARD_DISCOVERY → OUTWARD_READING
-  → ADVERSARIAL → INNOVATION → SYNTHESIS → QUALIFY
+Canonical pipeline (handoff 2026-09-08 — supersedes RSC0-9 stage design):
+  ISSUE → INWARD → OUTWARD → APPLICABILITY
+  → optional INNOVATION → ADVERSARIAL → SYNTHESIS → QUALIFY
+
+ISSUE replaces DEFINE: the Gitea issue is the authoritative statement of
+intent; a deterministic issue-quality gate checks it is buildable, but
+there is no cognitive DEFINE stage. OUTWARD is ONE unified natural MiMo
+research task (OUTWARD_DISCOVERY/OUTWARD_READING are retired as stages;
+their concepts survive only as artifact subsections).

 Stage transitions:
  StageCompleted(current) → advance to next stage
  StageFailed(current, reason) → retry or escalate
-  MORE_RESEARCH(unknowns) → create targeted child nodes, re-enter at the
-    appropriate stage for each unknown's type
+  REFINE(unknowns) → targeted return to the earliest deficient stage
+    (no full-pipeline restart; INWARD is not rerun unless Rune reality changed)
 """
 from __future__ import annotations

@@ -28,21 +34,76 @@ from pathlib import Path
 from typing import Any

 STAGES = [
-    "DEFINE", "INWARD", "OUTWARD_DISCOVERY", "OUTWARD_READING",
-    "ADVERSARIAL", "INNOVATION", "SYNTHESIS", "QUALIFY",
+    "ISSUE", "INWARD", "OUTWARD", "APPLICABILITY",
+    "INNOVATION", "ADVERSARIAL", "SYNTHESIS", "QUALIFY",
 ]

+# Legacy stage names that must never become READY through the canonical path.
+RETIRED_STAGES = {"DEFINE", "OUTWARD_DISCOVERY", "OUTWARD_READING"}
+
 STAGE_ARTIFACT_FILES = {
-    "DEFINE": "define.json",
+    "ISSUE": "issue_gate.json",
    "INWARD": "inward.json",
-    "OUTWARD_DISCOVERY": "outward_discovery.json",
-    "OUTWARD_READING": "outward_reading.json",
+    "OUTWARD": "outward.json",
+    "APPLICABILITY": "applicability.json",
    "ADVERSARIAL": "adversarial.json",
    "INNOVATION": "innovation.json",
    "SYNTHESIS": "synthesis.json",
    "QUALIFY": "qualify.json",
 }

+# Candidate classifications for APPLICABILITY (§9 of canonical handoff).
+APPLICABILITY_CLASSES = {
+    "DIRECTLY_APPLICABLE",
+    "APPLICABLE_WITH_ADAPTATION",
+    "CONFLICTS_WITH_RUNE",
+    "TOO_COMPLEX_FOR_VALUE",
+    "INSUFFICIENT_EVIDENCE",
+    "PROMISING_FOR_INNOVATION",
+}
+
+# APPLICABILITY routing decision (conditional INNOVATION correction).
+# The default is SKIP — INNOVATION runs only when warranted.
+APPLICABILITY_ROUTES = {
+    "STANDARD_SOLUTION_SUFFICIENT",  # → ADVERSARIAL (INNOVATION skipped)
+    "INNOVATION_WARRANTED",          # → INNOVATION → ADVERSARIAL
+}
+
+# Valid INNOVATION conclusions. NO_INNOVATION_WARRANTED is a SUCCESS result.
+INNOVATION_CONCLUSIONS = {
+    "ADOPT", "ADAPT", "BORROW", "BUILD",
+    "NO_INNOVATION_WARRANTED",
+}
+
+# ── ADVERSARIAL disposition contract (pipeline correction 2026-09-09) ──────
+# ADVERSARIAL owns epistemic refinement; QUALIFY owns implementation-readiness.
+# Only SURVIVES* dispositions unlock SYNTHESIS. Everything else triggers
+# targeted refinement at the earliest stage that can repair the defect.
+ADVERSARIAL_DISPOSITIONS = {
+    "SURVIVES",                    # → SYNTHESIS READY
+    "SURVIVES_WITH_MITIGATIONS",   # → SYNTHESIS READY (mitigations are required inputs)
+    "EVIDENCE_DEFICIENT",          # → targeted OUTWARD → APPLICABILITY → ADVERSARIAL
+    "APPLICABILITY_DEFICIENT",     # → APPLICABILITY → ADVERSARIAL
+    "INNOVATION_WARRANTED",        # → INNOVATION → ADVERSARIAL
+    "NO_VIABLE_CANDIDATE",         # → targeted OUTWARD (expand candidate space)
+}
+SYNTHESIS_UNLOCKING_DISPOSITIONS = {"SURVIVES", "SURVIVES_WITH_MITIGATIONS"}
+
+# Targeted refinement routes per disposition (§4 of the correction).
+ADVERSARIAL_REFINEMENT_ROUTES = {
+    "EVIDENCE_DEFICIENT": "OUTWARD",
+    "APPLICABILITY_DEFICIENT": "APPLICABILITY",
+    "INNOVATION_WARRANTED": "INNOVATION",
+    "NO_VIABLE_CANDIDATE": "OUTWARD",
+}
+
+# QUALIFY outcomes (narrowed semantics, §8–10 of the correction).
+QUALIFY_OUTCOMES = {
+    "PROCEED",                # implementation-ready → MiMo Code
+    "REFINE_SYNTHESIS",       # build instructions weak → SYNTHESIS only
+    "REOPEN_EARLIER_STAGE",   # exceptional: genuinely new blocking fact
+}
+

 class ResearchTaskTree:
    """Canonical research process state. One instance per research issue."""
@@ -112,8 +173,14 @@ class ResearchTaskTree:

    def advance(self, artifact: dict) -> str:
        """Accept the current stage's artifact, advance to the next stage.
-        Returns the next stage name. Raises if already at QUALIFY."""
+        Returns the next stage name. Raises if already at QUALIFY.
+        Retired stage names cannot be advanced (cannot become READY)."""
        stage = self.state["current_stage"]
+        if stage in RETIRED_STAGES:
+            raise ValueError(
+                f"Stage '{stage}' is retired (canonical handoff 2026-09-08); "
+                f"it cannot be executed or advanced. Canonical stages: {STAGES}"
+            )
        if stage not in self.state["completed_stages"] or stage != "QUALIFY":
            self.state["completed_stages"].append(stage)
        self.state["artifacts"][stage] = artifact
@@ -133,15 +200,132 @@ class ResearchTaskTree:
                self.state["current_stage"] = self.state.get("targeted_return_stage", "SYNTHESIS")
                self.state["targeted_branch_stages"] = []
        else:
-            # Normal pipeline: advance to next stage in order
-            idx = STAGES.index(stage)
-            if idx < len(STAGES) - 1:
-                self.state["current_stage"] = STAGES[idx + 1]
+            # Normal pipeline: advance to next stage in order — with
+            # stage-specific routing decisions:
+            if stage == "APPLICABILITY":
+                # APPLICABILITY decides whether INNOVATION runs (conditional).
+                self.state["current_stage"] = self._route_after_applicability(artifact)
+            elif stage == "ADVERSARIAL":
+                # ADVERSARIAL is the FINAL EPISTEMIC GATE (correction 2026-09-09):
+                # its disposition decides whether SYNTHESIS unlocks or refinement
+                # routes to the earliest repairable stage.
+                self.state["current_stage"] = self._route_after_adversarial(artifact)
+            elif stage == "QUALIFY":
+                self.state["current_stage"] = self._route_after_qualify(artifact)
            else:
-                self.state["current_stage"] = "QUALIFY"
+                idx = STAGES.index(stage)
+                if idx < len(STAGES) - 1:
+                    self.state["current_stage"] = STAGES[idx + 1]
+                else:
+                    self.state["current_stage"] = "QUALIFY"
        self.save()
        return self.state["current_stage"]

+    def _route_after_adversarial(self, artifact: dict) -> str:
+        """ADVERSARIAL disposition routing (correction §3–4).
+
+        SURVIVES / SURVIVES_WITH_MITIGATIONS → SYNTHESIS (gated by the
+        readiness invariant). Everything else routes to the earliest stage
+        that can repair the defect. Raises on missing/invalid disposition —
+        an adversarial pass without a disposition cannot unlock anything.
+        """
+        disposition = artifact.get("disposition")
+        if disposition not in ADVERSARIAL_DISPOSITIONS:
+            raise ValueError(
+                f"ADVERSARIAL artifact must carry a valid disposition "
+                f"({sorted(ADVERSARIAL_DISPOSITIONS)}), got: {disposition!r}"
+            )
+        self.state["adversarial_disposition"] = disposition
+        if disposition in SYNTHESIS_UNLOCKING_DISPOSITIONS:
+            ok, problems = self.synthesis_readiness(artifact)
+            if not ok:
+                raise ValueError(
+                    "SYNTHESIS readiness invariant failed: " + "; ".join(problems)
+                )
+            return "SYNTHESIS"
+        return ADVERSARIAL_REFINEMENT_ROUTES[disposition]
+
+    def _route_after_qualify(self, artifact: dict) -> str:
+        """Narrowed QUALIFY routing (correction §8–10).
+
+        QUALIFY owns IMPLEMENTATION-READINESS, not epistemic refinement.
+
+        PROCEED              → complete (implementation handoff)
+        REFINE_SYNTHESIS     → SYNTHESIS only (never an OUTWARD pass)
+        REOPEN_EARLIER_STAGE → earliest affected stage, ONLY with a genuinely
+                               new blocking fact + why earlier gates couldn't
+                               have caught it (exceptional escape hatch)
+        """
+        outcome = artifact.get("outcome", "PROCEED")
+        if outcome not in QUALIFY_OUTCOMES:
+            raise ValueError(
+                f"QUALIFY outcome must be one of {sorted(QUALIFY_OUTCOMES)}, got: {outcome!r}"
+            )
+        self.state["qualify_outcome"] = outcome
+        if outcome == "PROCEED":
+            self.state["status"] = "COMPLETE"
+            return "QUALIFY"  # terminal
+        if outcome == "REFINE_SYNTHESIS":
+            return "SYNTHESIS"
+        # REOPEN_EARLIER_STAGE: all four required fields must be present
+        required_fields = ("reason", "return_to", "new_blocking_fact",
+                           "why_previous_gate_could_not_reasonably_have_caught_it")
+        missing = [f for f in required_fields if not artifact.get(f)]
+        if missing:
+            raise ValueError(
+                f"REOPEN_EARLIER_STAGE requires {required_fields}; missing: {missing}"
+            )
+        return_to = artifact["return_to"]
+        if return_to not in STAGES or return_to == "QUALIFY":
+            raise ValueError(f"REOPEN_EARLIER_STAGE return_to must be an epistemic stage, got: {return_to!r}")
+        return return_to
+
+    def synthesis_readiness(self, adversarial_artifact: dict) -> tuple[bool, list[str]]:
+        """Deterministic SYNTHESIS READY invariant (correction §7).
+
+        SYNTHESIS READY IFF:
+        - ADVERSARIAL disposition ∈ {SURVIVES, SURVIVES_WITH_MITIGATIONS}
+        - at least one surviving candidate exists
+        - required mitigations are represented (when disposition
+          is SURVIVES_WITH_MITIGATIONS)
+        - blocking adversarial unknowns = 0
+        """
+        problems = []
+        disposition = adversarial_artifact.get("disposition")
+        if disposition not in SYNTHESIS_UNLOCKING_DISPOSITIONS:
+            problems.append(f"disposition {disposition!r} does not unlock SYNTHESIS")
+        survivors = adversarial_artifact.get("surviving_candidates", [])
+        if not survivors:
+            problems.append("no surviving candidate")
+        if disposition == "SURVIVES_WITH_MITIGATIONS" and not adversarial_artifact.get("required_mitigations"):
+            problems.append("SURVIVES_WITH_MITIGATIONS without required_mitigations — "
+                            "mitigations are mandatory synthesis inputs, not optional prose")
+        if self.state.get("blocking_unknowns"):
+            problems.append("blocking adversarial unknowns present: "
+                            f"{len(self.state['blocking_unknowns'])}")
+        return (len(problems) == 0, problems)
+
+    def _route_after_applicability(self, artifact: dict) -> str:
+        """APPLICABILITY decides the INNOVATION branch (canonical correction).
+
+        STANDARD_SOLUTION_SUFFICIENT → ADVERSARIAL (INNOVATION skipped)
+        INNOVATION_WARRANTED         → INNOVATION → ADVERSARIAL
+
+        INNOVATION exists to answer: can useful aspects be combined/borrowed
+        to produce something materially better? The standard researched
+        mechanism may already be the best solution. Default when the artifact
+        is silent: STANDARD_SOLUTION_SUFFICIENT (skip — do not manufacture
+        novelty for its own sake).
+        """
+        route = artifact.get("route", "STANDARD_SOLUTION_SUFFICIENT")
+        if route not in ("STANDARD_SOLUTION_SUFFICIENT", "INNOVATION_WARRANTED"):
+            raise ValueError(
+                f"APPLICABILITY route must be STANDARD_SOLUTION_SUFFICIENT or "
+                f"INNOVATION_WARRANTED, got: {route!r}"
+            )
+        self.state["applicability_route"] = route
+        return "INNOVATION" if route == "INNOVATION_WARRANTED" else "ADVERSARIAL"
+
    def fail(self, reason: str) -> None:
        self.state["stage_history"].append({
            "stage": self.state["current_stage"], "round": self.round,
@@ -150,9 +334,13 @@ class ResearchTaskTree:
        self.save()

    def more_research(self, unknowns: list[dict]) -> list[dict]:
-        """Create targeted child research nodes for blocking unknowns.
-        Transitions the tree to the targeted branch's first stage.
-        Does NOT rerun DEFINE/INWARD unless the unknown invalidates them."""
+        """Targeted refinement (QUALIFY → REFINE, canonical §14).
+
+        Routes to the EARLIEST deficient stage. No full-pipeline restart:
+        INWARD is not rerun unless Rune reality itself changed. Retired
+        stage names (OUTWARD_DISCOVERY/OUTWARD_READING) route to the
+        unified OUTWARD stage.
+        """
        self.state["blocking_unknowns"] = unknowns
        self.round += 1
        self.state["round"] = self.round
@@ -160,18 +348,18 @@ class ResearchTaskTree:
        all_stages = []
        for u in unknowns:
            u_type = u.get("type", "mixed")
-            if u_type in ("repo/inward",):
+            if u_type in ("repo/inward", "direct-verification"):
                stages_needed = ["INWARD"]
-            elif u_type in ("academic",):
-                stages_needed = ["OUTWARD_DISCOVERY", "OUTWARD_READING"]
-            elif u_type in ("current-tech", "software-source"):
-                stages_needed = ["OUTWARD_DISCOVERY", "OUTWARD_READING"]
+            elif u_type in ("academic", "current-tech", "software-source"):
+                stages_needed = ["OUTWARD"]
            elif u_type == "counter-evidence":
                stages_needed = ["ADVERSARIAL"]
-            elif u_type == "direct-verification":
-                stages_needed = ["INWARD"]
+            elif u_type == "applicability":
+                stages_needed = ["APPLICABILITY"]
+            elif u_type == "innovation":
+                stages_needed = ["INNOVATION"]
            else:
-                stages_needed = ["OUTWARD_DISCOVERY", "OUTWARD_READING"]
+                stages_needed = ["OUTWARD"]
            branches.append({
                "unknown": u,
                "stages": stages_needed,
@@ -179,10 +367,11 @@ class ResearchTaskTree:
            })
            all_stages.extend(stages_needed)

-        # Transition to the targeted branch's first stage
-        # (after the targeted stages, SYNTHESIS v2 → QUALIFY v2 runs)
+        # Route to the earliest deficient stage in canonical order,
+        # then refresh downstream stages (targeted refinement path).
        if all_stages:
-            self.state["current_stage"] = all_stages[0]
+            first = min(all_stages, key=lambda s: STAGES.index(s))
+            self.state["current_stage"] = first
            self.state["targeted_branch_stages"] = all_stages
            self.state["targeted_return_stage"] = "SYNTHESIS"
        self.save()
@@ -203,7 +392,13 @@ class ResearchTaskTree:
            "current_stage": self.current_stage,
            "completed_stages": self.state["completed_stages"],
            "accepted_artifacts": {
-                k: {kk: v for kk, v in vv.items() if kk in ("decision", "claims", "sources", "candidates", "disposition")}
+                # Adversarial-gated refinement (correction §5–6): mitigations
+                # and falsification tests MUST reach SYNTHESIS as required inputs.
+                k: {kk: v for kk, v in vv.items() if kk in (
+                    "decision", "claims", "sources", "candidates", "disposition",
+                    "required_mitigations", "falsification_tests",
+                    "surviving_candidates", "rejected_candidates", "route",
+                )}
                for k, vv in self.state["artifacts"].items()
            },
            "blocking_unknowns": self.state.get("blocking_unknowns", []),
@@ -1,275 +0,0 @@
-#!/usr/bin/env python3
-"""run_agent_stage.py — the ONE generic headless cognitive stage runner.
-
-P0.2 of the Forge Cognitive Research Loop handoff (2026-09-08). Doctrine
-(§1): "A forge state transition that requires cognition must explicitly
-dispatch cognition. Labels do not think. Runners do not think. MiMo must
-be called."
-
-This runner is TRANSPORT, not judgment:
-  1. fetch issue state from Gitea;
-  2. verify the issue is eligible for this stage (label present, not running);
-  3. acquire a stage lock (idempotency key: issue+stage+round; stale locks
-     expire — a crashed stage never wedges the pipeline);
-  4. collect the bounded stage context (prompt template + issue body);
-  5. invoke MiMo headlessly (mimo run --format json, structured events);
-  6. capture the structured event stream;
-  7. extract the final model output (type:text parts, LAST one wins);
-  8. derive a TOOL RECEIPT from the event stream (never model self-report);
-  9. validate the stage-output schema (research stage additionally requires
-     a valid OUTWARD receipt: >=2 distinct fetched web domains);
- 10. persist the result (file + return code); the CALLER (workflow) posts
-     to Gitea and changes forge state after deterministic validation;
- 11. release the lock;
- 12. fail loudly on any transport/tool/format error.
-
-The model does not change Gitea pipeline state directly.
-"""
-
-from __future__ import annotations
-
-import argparse
-import json
-import os
-import re
-import subprocess
-import sys
-import time
-from pathlib import Path
-from typing import Any
-from urllib.parse import urlparse
-
-MIMO_BIN = os.environ.get("MIMO_BIN", "/var/lib/gitea-desktop-runner/bin/mimo")
-MIMO_MODEL = os.environ.get("MIMO_MODEL", "Verboo Code/glm-5.3-flash")
-MIMO_AGENT = os.environ.get("MIMO_AGENT", "build")
-LOCK_TTL_SECS = int(os.environ.get("STAGE_LOCK_TTL_SECS", "7200"))
-
-WEB_TOOLS = {
-    "webfetch",
-    "websearch",
-    "firecrawl_search",
-    "firecrawl-scrape",
-    "firecrawl_search",
-    "tavily_search",
-    "tavily_extract",
-    "search",
-}
-FETCHISH = WEB_TOOLS | {"read", "grep", "glob"}
-
-
-# ------------------------------------------------------------------ events
-
-
-def _load_events(path: str | Path) -> list[dict]:
-    events = []
-    for line in open(path, encoding="utf-8", errors="replace"):
-        line = line.strip()
-        if not line:
-            continue
-        try:
-            events.append(json.loads(line))
-        except json.JSONDecodeError:
-            continue
-    return events
-
-
-def extract_final_text(events: list[dict]) -> str:
-    """Last type:text part wins (the stream is append-only)."""
-    text = ""
-    for ev in events:
-        part = ev.get("part", {})
-        if ev.get("type") == "text" and isinstance(part.get("text"), str):
-            text = part["text"]
-    return text
-
-
-def build_receipt(events: list[dict]) -> dict:
-    """Tool receipt derived from STRUCTURED tool events only.
-
-    Model self-report ("I searched the web") appears in type:text parts and
-    is deliberately invisible here. §10: no receipt -> OUTWARD INVALID.
-    """
-    search_or_fetch = 0
-    failed = 0
-    repo_reads = 0
-    domains: set[str] = set()
-    queries: list[str] = []
-    for ev in events:
-        part = ev.get("part", {})
-        if ev.get("type") != "tool" and part.get("type") != "tool":
-            continue
-        tool = (part.get("tool") or "").lower()
-        state = part.get("state") or {}
-        status = state.get("status")
-        inp = state.get("input") or {}
-        if tool in WEB_TOOLS:
-            if status == "completed":
-                search_or_fetch += 1
-                url = inp.get("url") or ""
-                host = urlparse(url).netloc if url else ""
-                if host:
-                    domains.add(host)
-                if "q=" in url or tool in {"websearch", "firecrawl_search", "tavily_search", "search"}:
-                    queries.append(url or json.dumps(inp)[:120])
-            else:
-                failed += 1
-        elif tool in {"read", "grep", "glob"} and status == "completed":
-            repo_reads += 1
-    return {
-        "search_or_fetch_calls": search_or_fetch,
-        "distinct_web_domains": len(domains),
-        "failed_calls": failed,
-        "repo_read_calls": repo_reads,
-        "queries": queries[:10],
-    }
-
-
-def outward_valid(receipt: dict) -> bool:
-    """§9: OUTWARD is valid only with real discovery — at least 2 distinct
-    fetched web domains and at least 2 completed search/fetch calls."""
-    return receipt.get("search_or_fetch_calls", 0) >= 2 and receipt.get("distinct_web_domains", 0) >= 2
-
-
-# ------------------------------------------------------------------ schema
-
-REQUIRED_FIELDS = ("issue", "stage", "round", "final_text", "receipt", "disposition")
-
-
-def validate_result(result: dict, stage: str | None = None) -> list[str]:
-    errs = []
-    for f in REQUIRED_FIELDS:
-        if f not in result or result[f] in (None, ""):
-            errs.append(f"missing field: {f}")
-    if stage == "research" or result.get("stage") == "research":
-        if not outward_valid(result.get("receipt", {})):
-            errs.append(
-                "OUTWARD INVALID: receipt shows fewer than 2 completed search/fetch calls across 2 distinct web domains"
-            )
-    if result.get("disposition") not in (None, "PROCEED", "MORE_RESEARCH"):
-        errs.append(f"unknown disposition: {result.get('disposition')}")
-    return errs
-
-
-# ------------------------------------------------------------------ locks
-
-
-def _lock_path(path: str) -> Path:
-    p = Path(path)
-    p.parent.mkdir(parents=True, exist_ok=True)
-    return p
-
-
-def acquire_lock(path: str, ttl_secs: int = LOCK_TTL_SECS) -> bool:
-    p = _lock_path(path)
-    if p.exists():
-        age = time.time() - p.stat().st_mtime
-        if age < ttl_secs:
-            return False
-        p.unlink()  # stale lock from a crashed stage — take over
-    p.write_text(f"pid={os.getpid()} acquired={time.time():.0f}")
-    return True
-
-
-def release_lock(path: str) -> None:
-    p = _lock_path(path)
-    if p.exists():
-        p.unlink()
-
-
-def idempotency_key(issue: int, stage: str, round_no: int) -> str:
-    return f"issue-{issue}-{stage}-r{round_no}"
-
-
-# ------------------------------------------------------------------ eligibility
-
-
-def stage_eligible(issue: dict, stage: str, running: bool) -> bool:
-    labels = {l["name"] for l in issue.get("labels", [])}
-    if running:
-        return False
-    return f"{stage}-pending" in labels
-
-
-# ------------------------------------------------------------------ invocation
-
-
-def run_mimo(prompt: str, events_out: str, err_out: str, timeout: int = 3600) -> int:
-    cmd = [
-        MIMO_BIN,
-        "run",
-        "--agent",
-        MIMO_AGENT,
-        "-m",
-        MIMO_MODEL,
-        "--dangerously-skip-permissions",
-        "--format",
-        "json",
-        prompt,
-    ]
-    with open(events_out, "wb") as fo, open(err_out, "wb") as fe:
-        proc = subprocess.run(cmd, stdout=fo, stderr=fe, timeout=timeout)
-    return proc.returncode
-
-
-def main_with(argv: list[str]) -> int:
-    parser = argparse.ArgumentParser(description="Generic headless agent stage runner")
-    parser.add_argument("--issue", type=int, required=True)
-    parser.add_argument("--stage", required=True, choices=["research", "planning", "review"])
-    parser.add_argument("--round", type=int, default=1)
-    parser.add_argument("--prompt-file", required=True, help="fully-built prompt for this invocation")
-    parser.add_argument("--out-dir", required=True, help="artifact dir for events/receipt/result")
-    parser.add_argument("--lock-dir", default="/tmp/rune-stage-locks")
-    parser.add_argument("--mimo-timeout", type=int, default=3600)
-    args = parser.parse_args(argv[1:])
-
-    key = idempotency_key(args.issue, args.stage, args.round)
-    lock = str(Path(args.lock_dir) / f"{key}.lock")
-    if not acquire_lock(lock):
-        print(f"stage-runner: {key} already running (lock held) — exiting 0 (idempotent)", flush=True)
-        return 0
-    try:
-        out = Path(args.out_dir)
-        out.mkdir(parents=True, exist_ok=True)
-        events_path = out / f"{key}.events.jsonl"
-        err_path = out / f"{key}.mimo.err.log"
-        prompt = Path(args.prompt_file).read_text(encoding="utf-8")
-
-        print(f"stage-runner: dispatching mimo for {key} ({len(prompt)} chars)", flush=True)
-        rc = run_mimo(prompt, str(events_path), str(err_path), args.mimo_timeout)
-        if rc != 0:
-            print(f"stage-runner: FAIL — mimo exited {rc}; see {err_path}", flush=True)
-            return 1
-
-        events = _load_events(events_path)
-        final_text = extract_final_text(events)
-        receipt = build_receipt(events)
-        (out / f"{key}.receipt.json").write_text(json.dumps(receipt, indent=1))
-        (out / f"{key}.final.md").write_text(final_text)
-
-        result = {
-            "issue": args.issue,
-            "stage": args.stage,
-            "round": args.round,
-            "final_text": final_text,
-            "receipt": receipt,
-            "disposition": None,  # caller extracts from final_text per stage protocol
-        }
-        errs = validate_result(result, stage=args.stage)
-        if errs:
-            print("stage-runner: FAIL — result schema invalid:", flush=True)
-            for e in errs:
-                print(f"  - {e}", flush=True)
-            return 1
-        (out / f"{key}.result.json").write_text(json.dumps(result, indent=1))
-        print(f"stage-runner: OK — {key} receipt={json.dumps(receipt)}", flush=True)
-        return 0
-    finally:
-        release_lock(lock)
-
-
-def main() -> int:
-    return main_with(sys.argv)
-
-
-if __name__ == "__main__":
-    sys.exit(main())
@@ -1,205 +0,0 @@
-#!/usr/bin/env python3
-"""run_research_stage.py — bounded one-stage MiMo executor (RSC3).
-
-ONE MiMo invocation for ONE stage. The ResearchTaskTree tracks where we are.
-The workflow calls this per-stage; it compiles the prompt, invokes mimo,
-extracts the artifact, validates, advances the tree, and returns the next
-stage. The workflow loops via successive workflow_dispatch calls (the Gitea
-event model IS the scheduler — no sleep/poll).
-"""
-from __future__ import annotations
-
-import json
-import os
-import subprocess
-import sys
-from pathlib import Path
-
-sys.path.insert(0, str(Path(__file__).parent))
-from research_task_tree import ResearchTaskTree, STAGES
-from research_prompt_compiler import compile_research_prompt
-from research_artifact import validate
-
-MIMO_BIN = os.environ.get("MIMO_BIN", "/var/lib/gitea-desktop-runner/bin/mimo")
-MIMO_MODEL = os.environ.get("MIMO_MODEL", "Verboo Code/glm-5.3-flash")
-MIMO_AGENT = os.environ.get("MIMO_AGENT", "build")
-
-
-def run_stage(tree: ResearchTaskTree, out_dir: str) -> dict:
-    """Execute one stage of the research tree. Returns the stage result."""
-    stage = tree.current_stage
-    prompt = compile_research_prompt(tree, stage)
-
-    os.makedirs(out_dir, exist_ok=True)
-    events_path = os.path.join(out_dir, f"stage_{stage}.events.jsonl")
-    err_path = os.path.join(out_dir, f"stage_{stage}.mimo.err.log")
-
-    print(f"stage-runner: {stage} (issue #{tree.issue}, round {tree.round})")
-    print(f"  prompt: {len(prompt)} chars")
-
-    cmd = [MIMO_BIN, "run", "--agent", MIMO_AGENT, "-m", MIMO_MODEL,
-           "--dangerously-skip-permissions", "--format", "json", prompt]
-
-    with open(events_path, "wb") as fo, open(err_path, "wb") as fe:
-        proc = subprocess.run(cmd, stdout=fo, stderr=fe, timeout=1800)
-
-    events_count = sum(1 for _ in open(events_path)) if os.path.exists(events_path) else 0
-    print(f"  mimo completed: exit={proc.returncode}, events={events_count} lines")
-
-    if proc.returncode != 0:
-        stderr_content = open(err_path).read() if os.path.exists(err_path) else ""
-        print(f"  mimo stderr (last 5 lines): {stderr_content[-500:]}")
-        tree.fail(f"mimo exited {proc.returncode}")
-        return {"stage": stage, "status": "FAILED", "error": f"mimo exited {proc.returncode}"}
-
-    # Extract text from events
-    texts = []
-    tool_calls = 0
-    for line in open(events_path):
-        try:
-            ev = json.loads(line)
-        except json.JSONDecodeError:
-            continue
-        if ev.get("type") == "text":
-            t = ev.get("part", {}).get("text", "")
-            if t.strip():
-                texts.append(t)
-        if ev.get("type") == "tool":
-            tool_calls += 1
-
-    if not texts:
-        tree.fail("no text output from mimo")
-        return {"stage": stage, "status": "FAILED", "error": "no text output"}
-
-    # Concatenate text blocks as the stage artifact
-    artifact_text = "\n\n".join(texts)
-
-    # Parse the stage artifact from the text (each stage has its own format)
-    artifact = {"text": artifact_text, "tool_calls": tool_calls, "event_count": sum(1 for _ in open(events_path))}
-
-    # Stage-specific validation BEFORE advance (authoritative gate)
-    from research_artifact import validate
-    validation_errors = []
-
-    if stage == "OUTWARD_DISCOVERY" or stage == "OUTWARD_READING":
-        # Extract URLs and paths from the text for structured validation
-        import re
-        url_pat = re.compile(r"https?://[^\s)" + chr(34) + "]+")
-        path_pat = re.compile(r"(?:src|tests|scripts|docs)/[\w./-]+\.py")
-        urls = [u for u in url_pat.findall(artifact_text) if "gitea.thingscouldgetdicey" not in u]
-        paths = path_pat.findall(artifact_text)
-
-        if stage == "OUTWARD_DISCOVERY" and len(set(urls)) < 2:
-            validation_errors.append(f"OUTWARD_DISCOVERY: {len(set(urls))} unique URLs < 2 — real discovery required")
-        if stage == "INWARD" and len(set(paths)) < 2:
-            validation_errors.append(f"INWARD: {len(set(paths))} code paths < 2 — real codebase inspection required")
-
-    # INNOVATION: check for evidence-derived candidates
-    if stage == "INNOVATION":
-        if "derived_from" not in artifact_text and "evidence" not in artifact_text.lower():
-            validation_errors.append("INNOVATION: no evidence derivation found in output")
-
-    if validation_errors:
-        # Gate failure: do NOT advance. Return errors for retry.
-        tree.fail("; ".join(validation_errors))
-        return {
-            "stage": stage,
-            "status": "GATE_FAILED",
-            "errors": validation_errors,
-            "artifact": artifact,
-        }
-
-    # Advance the tree (gate passed)
-    next_stage = tree.advance(artifact)
-
-    # Persist the tree to master via the contents API (Gitea owns durable state)
-    gitea_token = os.environ.get("GITEA_TOKEN", "")
-    gitea_server = os.environ.get("SERVER", "").rstrip("/")
-    print(f"  tree persist check: token={'yes' if gitea_token else 'NO'}, server={'yes' if gitea_server else 'NO'}")
-    if gitea_token and gitea_server:
-        import base64
-        import urllib.request
-        tree_content = json.dumps(tree.state, indent=2, default=str)
-        tree_path = f"research/issue-{tree.issue}/task_tree.json"
-        # Get current sha if file exists
-        req = urllib.request.Request(
-            f"{gitea_server}/api/v1/repos/conductor/rune/contents/{tree_path}?ref=master",
-            headers={"Authorization": "token " + gitea_token})
-        sha = None
-        try:
-            with urllib.request.urlopen(req, timeout=30) as r:
-                sha = json.loads(r.read()).get("sha")
-        except Exception:
-            pass
-        put_data = {
-            "message": f"research: persist task tree after {stage} (issue #{tree.issue}, round {tree.round})",
-            "content": base64.b64encode(tree_content.encode()).decode(),
-            "branch": "master",
-        }
-        if sha:
-            put_data["sha"] = sha
-        put_req = urllib.request.Request(
-            f"{gitea_server}/api/v1/repos/conductor/rune/contents/{tree_path}",
-            data=json.dumps(put_data).encode(),
-            headers={"Authorization": "token " + gitea_token, "Content-Type": "application/json"},
-            method="PUT")
-        try:
-            with urllib.request.urlopen(put_req, timeout=30) as r:
-                print(f"  tree persisted to master: {r.status}")
-        except Exception as e:
-            print(f"  tree persist failed (non-fatal): {e}")
-
-    print(f"  completed {stage} → next: {next_stage} ({tool_calls} tool calls, {len(artifact_text)} chars)")
-
-    return {
-        "stage": stage,
-        "status": "COMPLETED",
-        "next_stage": next_stage,
-        "artifact": artifact,
-        "tool_calls": tool_calls,
-    }
-
-
-def main_with(argv: list[str]) -> int:
-    import argparse
-    parser = argparse.ArgumentParser(description="One-stage research executor")
-    parser.add_argument("--issue", type=int, required=True)
-    parser.add_argument("--round", type=int, default=1)
-    parser.add_argument("--artifact-dir", required=True)
-    parser.add_argument("--out-dir", required=True)
-    args = parser.parse_args(argv[1:])
-
-    tree = ResearchTaskTree(issue=args.issue, round_no=args.round, artifact_dir=args.artifact_dir)
-    # If the local tree is fresh (no completed stages) but master has a persisted tree,
-    # load from master (the workspace is ephemeral — Gitea owns durable state)
-    if not tree.state["completed_stages"]:
-        gitea_token = os.environ.get("GITEA_TOKEN", "")
-        gitea_server = os.environ.get("SERVER", "").rstrip("/")
-        if gitea_token and gitea_server:
-            import base64
-            import urllib.request
-            tree_path = f"research/issue-{args.issue}/task_tree.json"
-            req = urllib.request.Request(
-                f"{gitea_server}/api/v1/repos/conductor/rune/contents/{tree_path}?ref=master",
-                headers={"Authorization": "token " + gitea_token})
-            try:
-                with urllib.request.urlopen(req, timeout=30) as r:
-                    remote = json.loads(r.read())
-                    tree_content = base64.b64decode(remote["content"]).decode()
-                    tree.state = json.loads(tree_content)
-                    print(f"  tree loaded from master: stage={tree.current_stage}, completed={len(tree.state.get('completed_stages', []))}")
-            except Exception:
-                pass  # no persisted tree — start fresh
-    if tree.is_complete:
-        print("research tree already complete")
-        return 0
-
-    result = run_stage(tree, args.out_dir)
-    print(json.dumps(result, indent=2, default=str))
-
-    # If there's a next stage, return 0 (the workflow dispatches the next stage call)
-    return 0
-
-
-if __name__ == "__main__":
-    sys.exit(main_with(sys.argv))
@@ -0,0 +1,126 @@
+#!/usr/bin/env python3
+"""runner_evidence.py — runtime execution placement evidence (RP2/#265).
+
+Canonical rule: THE HEAVY RUNNER IS THE DESKTOP PC, NOT THE PI.
+A desktop-heavy stage executed on the Pi must NOT count as valid acceptance.
+
+This module captures ACTUAL runtime evidence — not configuration inference:
+  - hostname of the executing machine
+  - runner identity (from CI env vars when present, else "local")
+  - runner labels/capabilities
+  - execution class (desktop-heavy / pi-lightweight)
+  - stage, process id, issue, research process id, timestamp
+
+The evidence record travels with the stage result and is validated by the
+placement gate BEFORE a stage result can be accepted.
+"""
+from __future__ import annotations
+
+import os
+import socket
+import time
+from datetime import datetime, timezone
+
+# Hostname substrings that identify the Pi fleet. Conservative: match on
+# the runner name labels actually registered in Gitea, plus obvious names.
+PI_IDENTIFIERS = ("rune-pi", "rune-infra-pi", "raspberry", "-pi")
+
+# Desktop runner identity (the only valid executor for desktop-heavy stages).
+DESKTOP_RUNNER_LABEL = "rune-ci-desktop"
+
+# Stages that require desktop-heavy execution (cognition, research, coding).
+DESKTOP_HEAVY_STAGES = {
+    "INWARD", "OUTWARD", "APPLICABILITY", "INNOVATION",
+    "ADVERSARIAL", "SYNTHESIS", "QUALIFY",
+}
+
+# Lightweight forge/control work that MAY legitimately run on the Pi.
+PI_LIGHTWEIGHT_OPERATIONS = {
+    "issue_metadata", "label_change", "artifact_metadata",
+    "process_state", "eligibility_check", "state_transition",
+}
+
+
+def _is_pi(name: str) -> bool:
+    lowered = (name or "").lower()
+    return any(marker in lowered for marker in PI_IDENTIFIERS)
+
+
+def capture_execution_evidence(
+    stage: str,
+    issue: int | None = None,
+    process_id: str | None = None,
+    execution_class: str = "desktop-heavy",
+) -> dict:
+    """Capture WHERE this stage actually ran, from runtime facts.
+
+    Never trust configuration alone — capture the live hostname and any
+    runner identity present in the environment.
+    """
+    hostname = socket.gethostname()
+    runner_name = (
+        os.environ.get("RUNNER_NAME")
+        or os.environ.get("GITEA_RUNNER_NAME")
+        or ("local:" + hostname)
+    )
+    runner_labels = [
+        l.strip() for l in os.environ.get("RUNNER_LABELS", "").split(",") if l.strip()
+    ] or [runner_name]
+
+    return {
+        "runner_hostname": hostname,
+        "runner_name": runner_name,
+        "runner_labels": runner_labels,
+        "execution_class": execution_class,
+        "stage": stage,
+        "process_id": process_id or f"pid:{os.getpid()}",
+        "issue_id": issue,
+        "research_process_id": process_id,
+        "timestamp": datetime.now(timezone.utc).isoformat(),
+        "monotonic": time.monotonic(),
+    }
+
+
+def validate_placement(evidence: dict) -> tuple[bool, list[str]]:
+    """Deterministic placement gate (henxel).
+
+    Returns (accepted, violations). A desktop-heavy stage executed on the
+    Pi is REJECTED — no silent fallback, no configuration-only inference.
+    """
+    violations = []
+    stage = evidence.get("stage", "")
+    klass = evidence.get("execution_class", "desktop-heavy")
+
+    # Evidence completeness — identity must be actually captured
+    for field in ("runner_hostname", "runner_name", "runner_labels",
+                  "execution_class", "stage", "timestamp"):
+        if not evidence.get(field):
+            violations.append(f"placement evidence missing field: {field}")
+
+    if klass == "desktop-heavy":
+        identity = (evidence.get("runner_name", "") + " " + evidence.get("runner_hostname", ""))
+        if _is_pi(identity) or any(_is_pi(l) for l in evidence.get("runner_labels", [])):
+            violations.append(
+                f"PLACEMENT VIOLATION: desktop-heavy stage '{stage}' executed on Pi "
+                f"(runner={evidence.get('runner_name')}, host={evidence.get('runner_hostname')}). "
+                f"Rejected as valid acceptance — the heavy runner is the desktop PC, not the Pi."
+            )
+        # Desktop identity = Gitea runner label (rune-ci-desktop), the Gitea
+        # runner NAME (rune-desktop), or a verified local desktop execution.
+        # Pi rejection above already caught Pi markers — this is the allow-side.
+        labels = " ".join(evidence.get("runner_labels", []))
+        if (DESKTOP_RUNNER_LABEL not in identity
+                and "rune-desktop" not in identity
+                and DESKTOP_RUNNER_LABEL not in labels
+                and "local:" not in evidence.get("runner_name", "")):
+            violations.append(
+                f"runner '{evidence.get('runner_name')}' is not '{DESKTOP_RUNNER_LABEL}' "
+                f"nor the registered rune-desktop runner, and not a verified local "
+                f"desktop execution"
+            )
+    return (len(violations) == 0, violations)
+
+
+def summarize_for_artifact(evidence: dict) -> dict:
+    """Strip transient fields for embedding in a stage artifact."""
+    return {k: v for k, v in evidence.items() if k != "monotonic"}
@@ -0,0 +1,221 @@
+#!/usr/bin/env python3
+"""stage_telemetry.py — StageAttempt telemetry (OBS-1, epic #284 / #287).
+
+OBSERVATIONAL ONLY. This module records what happened; it must never change
+stage authorization, retry behavior, model prompts, runner selection, or gate
+outcomes. Timing code is not a process authority.
+
+Design decisions (ratified in #287 tightening):
+- EVERY attempt persists its own lifecycle record — successful, gate-failed,
+  failed, timed-out, interrupted. Dropping expensive failures would bias
+  ADAPT-1's baseline toward cheap success.
+- Timing categories are OBSERVED, not forced additive: wall_time is not
+  model_time + tool_time when MiMo waits on a tool or relay overhead overlaps.
+  Records carry the raw timestamps so reports can distinguish exclusive /
+  overlapping / unmeasured-residual.
+- Records survive restart: each attempt is appended to
+  <artifact_dir>/telemetry/attempts.jsonl (append-only, one JSON object per
+  line) AND mirrored into the task-tree state at persist time.
+- UNKNOWN_NOT_EXPOSED is recorded verbatim when a counter (e.g. provider
+  tokens) is unavailable. Estimates are never presented as measurements.
+
+Attempt lifecycle (from the executor's perspective):
+  begin(attempt_id, event_id, stage)  → returns a handle
+  handle.mark_model_start/end()       → model invocation windows
+  handle.mark_tool_start/end()        → tool execution windows
+  handle.finish(terminal_status)      → COMPLETED | GATE_FAILED | FAILED |
+                                        TIMEOUT | INTERRUPTED
+  persist(handle)                     → append + mirror
+"""
+from __future__ import annotations
+
+import json
+import os
+import time
+from datetime import datetime, timezone
+
+TERMINAL_STATUSES = {"COMPLETED", "GATE_FAILED", "FAILED", "TIMEOUT", "INTERRUPTED"}
+UNKNOWN = "UNKNOWN_NOT_EXPOSED"
+
+
+def _now_iso() -> str:
+    return datetime.now(timezone.utc).isoformat()
+
+
+class StageAttempt:
+    """One attempt's observed lifecycle. Pure data — no control flow."""
+
+    def __init__(self, attempt_id: str, event_id: str, stage: str,
+                 issue: int, process_id: str):
+        self.attempt_id = attempt_id
+        self.event_id = event_id
+        self.stage = stage
+        self.issue = issue
+        self.process_id = process_id
+        self.started_at = _now_iso()
+        self._t0 = time.monotonic()
+        self.finished_at: str | None = None
+        self.terminal_status: str | None = None
+        # Observed windows (monotonic pairs, converted at finish)
+        self.model_windows: list[tuple[float, float]] = []
+        self.tool_windows: list[tuple[float, float]] = []
+        self.gate_windows: list[tuple[float, float]] = []
+        self.persistence_windows: list[tuple[float, float]] = []
+        # Counters
+        self.model_calls = 0
+        self.tool_calls = 0
+        self.repo_read_calls = 0
+        self.external_queries = 0
+        self.sources_discovered = 0
+        self.sources_read = 0
+        self.retries = 0
+        self.reconciliation_actions = 0
+        self.implementation_corrections = 0
+        self.ci_failures = 0
+        # Provider counters — recorded as UNKNOWN unless actually exposed
+        self.input_tokens: int | str = UNKNOWN
+        self.output_tokens: int | str = UNKNOWN
+        # Queue wait: measured by the caller if it knows the dispatch time
+        self.queue_wait_s: float | None = None
+
+    # -- window markers (observational; no control flow) ---------------------
+
+    def mark_model_start(self) -> None:
+        self.model_windows.append((time.monotonic(), 0.0))
+
+    def mark_model_end(self) -> None:
+        if self.model_windows and self.model_windows[-1][1] == 0.0:
+            s, _ = self.model_windows[-1]
+            self.model_windows[-1] = (s, time.monotonic())
+            self.model_calls += 1
+
+    def mark_tool_start(self) -> None:
+        self.tool_windows.append((time.monotonic(), 0.0))
+
+    def mark_tool_end(self) -> None:
+        if self.tool_windows and self.tool_windows[-1][1] == 0.0:
+            s, _ = self.tool_windows[-1]
+            self.tool_windows[-1] = (s, time.monotonic())
+            self.tool_calls += 1
+
+    def mark_gate_start(self) -> None:
+        self.gate_windows.append((time.monotonic(), 0.0))
+
+    def mark_gate_end(self) -> None:
+        if self.gate_windows and self.gate_windows[-1][1] == 0.0:
+            s, _ = self.gate_windows[-1]
+            self.gate_windows[-1] = (s, time.monotonic())
+
+    def mark_persistence_start(self) -> None:
+        self.persistence_windows.append((time.monotonic(), 0.0))
+
+    def mark_persistence_end(self) -> None:
+        if self.persistence_windows and self.persistence_windows[-1][1] == 0.0:
+            s, _ = self.persistence_windows[-1]
+            self.persistence_windows[-1] = (s, time.monotonic())
+
+    # -- terminal ------------------------------------------------------------
+
+    def finish(self, terminal_status: str) -> None:
+        assert terminal_status in TERMINAL_STATUSES, terminal_status
+        self.terminal_status = terminal_status
+        self.finished_at = _now_iso()
+        # Close any unclosed windows (INTERRUPTED/TIMEOUT paths)
+        for lst in (self.model_windows, self.tool_windows,
+                    self.gate_windows, self.persistence_windows):
+            if lst and lst[-1][1] == 0.0:
+                s, _ = lst[-1]
+                lst[-1] = (s, time.monotonic())
+
+    # -- derived (observed, explicitly non-additive) --------------------------
+
+    def _sum_windows(self, windows: list[tuple[float, float]]) -> float:
+        return round(sum(e - s for s, e in windows), 4)
+
+    def summary(self) -> dict:
+        # wall_time: monotonic delta while running; after finish, derived from
+        # the started/finished ISO pair is NOT monotonic-safe — keep the
+        # monotonic delta captured at finish time instead.
+        wall = round(time.monotonic() - self._t0, 4)
+        model_time = self._sum_windows(self.model_windows)
+        tool_time = self._sum_windows(self.tool_windows)
+        gate_time = self._sum_windows(self.gate_windows)
+        persistence_time = self._sum_windows(self.persistence_windows)
+        return {
+            "attempt_id": self.attempt_id,
+            "event_id": self.event_id,
+            "stage": self.stage,
+            "issue": self.issue,
+            "process_id": self.process_id,
+            "started_at": self.started_at,
+            "finished_at": self.finished_at,
+            "terminal_status": self.terminal_status,
+            "wall_time_s": wall,
+            # Observed categories — NOT asserted to sum to wall_time.
+            "model_time_s": model_time,
+            "tool_time_s": tool_time,
+            "gate_time_s": gate_time,
+            "persistence_time_s": persistence_time,
+            # Overlap analysis: tool time inside model windows is overlap,
+            # not double-counted work.
+            "overlap_note": (
+                "categories are observed windows and may overlap; "
+                "wall_time is authoritative, category sums are not additive"),
+            "model_calls": self.model_calls,
+            "tool_calls": self.tool_calls,
+            "repo_read_calls": self.repo_read_calls,
+            "external_queries": self.external_queries,
+            "sources_discovered": self.sources_discovered,
+            "sources_read": self.sources_read,
+            "retries": self.retries,
+            "reconciliation_actions": self.reconciliation_actions,
+            "implementation_corrections": self.implementation_corrections,
+            "ci_failures": self.ci_failures,
+            "input_tokens": self.input_tokens,
+            "output_tokens": self.output_tokens,
+            "queue_wait_s": self.queue_wait_s,
+            "window_counts": {
+                "model": len(self.model_windows),
+                "tool": len(self.tool_windows),
+                "gate": len(self.gate_windows),
+                "persistence": len(self.persistence_windows),
+            },
+        }
+
+
+class TelemetryLedger:
+    """Append-only attempt ledger. Survives restart (JSONL on disk).
+    Appending is observational: a failed append must never break the stage."""
+
+    def __init__(self, artifact_dir: str):
+        self.dir = os.path.join(artifact_dir, "telemetry")
+        self.path = os.path.join(self.dir, "attempts.jsonl")
+
+    def persist(self, attempt: StageAttempt) -> bool:
+        """Append one attempt record. Returns True on success; NEVER raises
+        into the stage path (observational invariant)."""
+        try:
+            os.makedirs(self.dir, exist_ok=True)
+            with open(self.path, "a") as f:
+                f.write(json.dumps(attempt.summary(), default=str) + "\n")
+            return True
+        except (OSError, TypeError, ValueError):
+            # Observational invariant: telemetry failures (unwritable path,
+            # serialization problems) are swallowed, never raised into the
+            # stage path.
+            return False
+
+    def load_all(self) -> list[dict]:
+        if not os.path.exists(self.path):
+            return []
+        out = []
+        with open(self.path) as f:
+            for line in f:
+                try:
+                    out.append(json.loads(line))
+                except json.JSONDecodeError:
+                    continue
+        return out
+
+    def attempts_for(self, stage: str) -> list[dict]:
+        return [a for a in self.load_all() if a.get("stage") == stage]
@@ -3,4 +3,4 @@
 This is the main entry point for the Rune program.
 """

-__version__ = "0.55.0"
+__version__ = "0.58.1"
@@ -252,7 +252,7 @@ def main() -> int:
    )
    check(
        "Rune minor version advertises provisioning and restore verification",
-        '__version__ = "0.55.0"' in rune_version,
+        '__version__ = "0.58.1"' in rune_version,
        failures,
    )
    # #169 policy update: auto-bump on merge is sanctioned (Nick directive:
@@ -7,7 +7,7 @@ mode system, subject header, shared memory and identity.

 This is not an interface. This is how I see, speak, and interact with the world.

-Version: v0.55.0
+Version: v0.58.1
 Features: 41 (24 original + 17 new native commands)

 Usage:
@@ -1923,7 +1923,7 @@ class RuneApp(App):
        # Show version info
        self.chat_channel.add_message(
            "system",
-            f"[dim]Rune v0.55.0 | Textual TUI | {len(loaded)} native modules[/dim]",
+            f"[dim]Rune v0.58.1 | Textual TUI | {len(loaded)} native modules[/dim]",
        )

        # Auto-show night mode suggestion if evening/night hours
@@ -0,0 +1,146 @@
+"""Tests: RP6 ADVERSARIAL executor + gate (#269).
+
+Gate semantics: a real attack (every dimension addressed, every leading
+candidate targeted), coherent survivors (no unrebutted fatal attacks),
+no rubber-stamping.
+"""
+
+from __future__ import annotations
+
+import importlib.util
+import json
+import sys
+from pathlib import Path
+
+import pytest
+
+ROOT = Path(__file__).resolve().parent.parent
+
+for name, rel in [
+    ("research_task_tree", "scripts/research_task_tree.py"),
+    ("research_stage_executor", "scripts/research_stage_executor.py"),
+]:
+    if name not in sys.modules:
+        spec = importlib.util.spec_from_file_location(name, ROOT / rel)
+        mod = importlib.util.module_from_spec(spec)
+        sys.modules[name] = mod
+        spec.loader.exec_module(mod)
+
+rtt = sys.modules["research_task_tree"]
+rse = sys.modules["research_stage_executor"]
+
+
+def _make_tree(tmp_path, issue=980):
+    t = rtt.ResearchTaskTree(issue=issue, round_no=1, artifact_dir=str(tmp_path / f"research/issue-{issue}"))
+    for stage in ("ISSUE", "INWARD", "OUTWARD"):
+        t.advance({"test": True})
+    t.advance({"candidates": [{"id": "M1", "classification": "DIRECTLY_APPLICABLE",
+                               "integration_point": "memory_store.recall", "evidence": ["E1"]}],
+               "route": "STANDARD_SOLUTION_SUFFICIENT"})
+    assert t.current_stage == "ADVERSARIAL"
+    return t
+
+
+def _executor(tree):
+    ex = rse.StageExecutor(issue=tree.issue, artifact_dir=tree.artifact_dir, round_no=tree.round)
+    ex.tree.state["artifacts"]["APPLICABILITY"] = tree.state["artifacts"].get("APPLICABILITY", {})
+    return ex
+
+
+GOOD_ATTACKS = [
+    {"id": "A1", "target_candidate": "M1", "dimension": "contradicting evidence",
+     "finding": "vendor benchmarks conflict", "evidence": ["E1"], "severity": "minor"},
+    {"id": "A2", "target_candidate": "M1", "dimension": "weak assumptions",
+     "finding": "assumes stable corpus", "evidence": [], "severity": "moderate"},
+    {"id": "A3", "target_candidate": "M1", "dimension": "failure modes",
+     "finding": "RRF degrades on empty FTS results", "evidence": [], "severity": "moderate"},
+    {"id": "A4", "target_candidate": "M1", "dimension": "simpler alternative",
+     "finding": "plain FTS5 may suffice", "evidence": [], "severity": "minor"},
+    {"id": "A5", "target_candidate": "M1", "dimension": "duplicate authority",
+     "finding": "harness could become second truth", "evidence": [], "severity": "moderate"},
+    {"id": "A6", "target_candidate": "M1", "dimension": "Rune constraint violations",
+     "finding": "none found — projection rule respected", "evidence": [], "severity": "none"},
+    {"id": "A7", "target_candidate": "M1", "dimension": "falsification",
+     "finding": "harness showing <5% delta falsifies", "evidence": [], "severity": "major"},
+]
+
+
+def test_full_attack_passes_gate(tmp_path):
+    tree = _make_tree(tmp_path)
+    ex = _executor(tree)
+    artifact = ex._normalize_adversarial_artifact(
+        {"surviving_candidates": ["M1"], "rejected_candidates": [], "attacks": GOOD_ATTACKS,
+         "critical_assumptions": ["stable corpus"], "required_mitigations": ["seeded corpus"],
+         "new_research_gaps": [], "falsification_tests": ["<5% delta test"]},
+        {"receipts": [], "event_counts": {}, "elapsed": 0.0}, {"attempt": 1})
+    assert ex._validate_adversarial(artifact) == []
+
+
+def test_rubber_stamp_fails_gate(tmp_path):
+    tree = _make_tree(tmp_path)
+    ex = _executor(tree)
+    artifact = ex._normalize_adversarial_artifact(
+        {"surviving_candidates": ["M1"], "attacks": []},
+        {"receipts": [], "event_counts": {}, "elapsed": 0.0}, {"attempt": 1})
+    errors = ex._validate_adversarial(artifact)
+    assert any("rubber-stamp" in e for e in errors)
+    assert any("dimensions not addressed" in e for e in errors)
+
+
+def test_unattacked_leading_candidate_fails_gate(tmp_path):
+    tree = _make_tree(tmp_path)
+    ex = _executor(tree)
+    tree.state["artifacts"]["APPLICABILITY"]["candidates"].append(
+        {"id": "M2", "classification": "APPLICABLE_WITH_ADAPTATION",
+         "integration_point": "x", "evidence": ["E1"]})
+    artifact = ex._normalize_adversarial_artifact(
+        {"surviving_candidates": ["M1", "M2"], "attacks": GOOD_ATTACKS},  # only M1 attacked
+        {"receipts": [], "event_counts": {}, "elapsed": 0.0}, {"attempt": 1})
+    errors = ex._validate_adversarial(artifact)
+    assert any("never attacked" in e and "M2" in e for e in errors)
+
+
+def test_unrebutted_fatal_on_survivor_fails_gate(tmp_path):
+    tree = _make_tree(tmp_path)
+    ex = _executor(tree)
+    attacks = GOOD_ATTACKS + [
+        {"id": "A8", "target_candidate": "M1", "dimension": "failure modes",
+         "finding": "corrupts memory on crash", "evidence": ["E2"], "severity": "fatal"}]
+    artifact = ex._normalize_adversarial_artifact(
+        {"surviving_candidates": ["M1"], "attacks": attacks},
+        {"receipts": [], "event_counts": {}, "elapsed": 0.0}, {"attempt": 1})
+    errors = ex._validate_adversarial(artifact)
+    assert any("fatal" in e and "without rebuttal" in e for e in errors)
+
+
+def test_rebutted_fatal_on_survivor_passes_gate(tmp_path):
+    tree = _make_tree(tmp_path)
+    ex = _executor(tree)
+    attacks = GOOD_ATTACKS + [
+        {"id": "A8", "target_candidate": "M1", "dimension": "failure modes",
+         "finding": "corrupts memory on crash", "evidence": ["E2"], "severity": "fatal",
+         "rebuttal": "write path is append-only; crash loses at most the current batch"}]
+    artifact = ex._normalize_adversarial_artifact(
+        {"surviving_candidates": ["M1"], "attacks": attacks},
+        {"receipts": [], "event_counts": {}, "elapsed": 0.0}, {"attempt": 1})
+    assert ex._validate_adversarial(artifact) == []
+
+
+def test_missing_fields_in_attack_fail_gate(tmp_path):
+    tree = _make_tree(tmp_path)
+    ex = _executor(tree)
+    artifact = ex._normalize_adversarial_artifact(
+        {"surviving_candidates": [], "rejected_candidates": [{"id": "M1", "reason": "broke"}],
+         "attacks": [{"id": "A1", "target_candidate": "M1", "dimension": "falsification"}]},
+        {"receipts": [], "event_counts": {}, "elapsed": 0.0}, {"attempt": 1})
+    errors = ex._validate_adversarial(artifact)
+    assert any("missing finding" in e for e in errors)
+    assert any("dimensions not addressed" in e for e in errors)
+
+
+def test_advance_after_adversarial_goes_to_synthesis(tmp_path):
+    tree = _make_tree(tmp_path)
+    tree.advance({"disposition": "SURVIVES", "surviving_candidates": ["M1"],
+                  "required_mitigations": [], "falsification_tests": [],
+                  "attacks": GOOD_ATTACKS})
+    assert tree.current_stage == "SYNTHESIS"
@@ -0,0 +1,187 @@
+"""Tests: adversarial-gated research refinement + narrowed QUALIFY (correction 2026-09-09).
+
+Acceptance matrix from §18 of the amendment, proven as deterministic behavior.
+"""
+
+from __future__ import annotations
+
+import importlib.util
+import json
+import sys
+from pathlib import Path
+
+import pytest
+
+ROOT = Path(__file__).resolve().parent.parent
+
+if "research_task_tree" not in sys.modules:
+    spec = importlib.util.spec_from_file_location("research_task_tree", ROOT / "scripts" / "research_task_tree.py")
+    mod = importlib.util.module_from_spec(spec)
+    sys.modules["research_task_tree"] = mod
+    spec.loader.exec_module(mod)
+rtt = sys.modules["research_task_tree"]
+
+
+def _tree_at_adversarial(tmp_path, issue=984):
+    t = rtt.ResearchTaskTree(issue=issue, round_no=1, artifact_dir=str(tmp_path / f"research/issue-{issue}"))
+    for stage in ("ISSUE", "INWARD", "OUTWARD"):
+        t.advance({"test": True})
+    t.advance({"candidates": [{"id": "M1", "classification": "DIRECTLY_APPLICABLE"}],
+               "route": "STANDARD_SOLUTION_SUFFICIENT"})
+    assert t.current_stage == "ADVERSARIAL"
+    return t
+
+
+BASE_SURVIVOR = {
+    "disposition": "SURVIVES_WITH_MITIGATIONS",
+    "surviving_candidates": ["M1"],
+    "required_mitigations": ["mode labeling", "cache controls"],
+    "falsification_tests": ["FT1", "FT2"],
+    "attacks": [{"id": "A1", "target_candidate": "M1", "dimension": "failure modes", "finding": "x"}],
+}
+
+
+def test_disposition_enum_declared():
+    assert rtt.ADVERSARIAL_DISPOSITIONS == {
+        "SURVIVES", "SURVIVES_WITH_MITIGATIONS", "EVIDENCE_DEFICIENT",
+        "APPLICABILITY_DEFICIENT", "INNOVATION_WARRANTED", "NO_VIABLE_CANDIDATE",
+    }
+    assert rtt.SYNTHESIS_UNLOCKING_DISPOSITIONS == {"SURVIVES", "SURVIVES_WITH_MITIGATIONS"}
+
+
+def test_survives_unlocks_synthesis(tmp_path):
+    t = _tree_at_adversarial(tmp_path)
+    t.advance({**BASE_SURVIVOR, "disposition": "SURVIVES", "required_mitigations": []})
+    assert t.current_stage == "SYNTHESIS"
+    assert t.state["adversarial_disposition"] == "SURVIVES"
+
+
+def test_survives_with_mitigations_unlocks_synthesis(tmp_path):
+    t = _tree_at_adversarial(tmp_path)
+    t.advance(BASE_SURVIVOR)
+    assert t.current_stage == "SYNTHESIS"
+
+
+def test_evidence_deficient_routes_to_outward(tmp_path):
+    t = _tree_at_adversarial(tmp_path)
+    t.advance({"disposition": "EVIDENCE_DEFICIENT", "surviving_candidates": [],
+               "reason": "anchor weak", "challenged_claims": ["E5"]})
+    assert t.current_stage == "OUTWARD"
+    assert t.current_stage != "SYNTHESIS"
+
+
+def test_applicability_deficient_routes_to_applicability(tmp_path):
+    t = _tree_at_adversarial(tmp_path)
+    t.advance({"disposition": "APPLICABILITY_DEFICIENT", "surviving_candidates": [],
+               "reason": "integration point wrong"})
+    assert t.current_stage == "APPLICABILITY"
+
+
+def test_innovation_warranted_routes_to_innovation(tmp_path):
+    t = _tree_at_adversarial(tmp_path)
+    t.advance({"disposition": "INNOVATION_WARRANTED", "surviving_candidates": ["M1"],
+               "reason": "leading option killed; compositional opportunity"})
+    assert t.current_stage == "INNOVATION"
+
+
+def test_no_viable_candidate_routes_to_outward(tmp_path):
+    t = _tree_at_adversarial(tmp_path)
+    t.advance({"disposition": "NO_VIABLE_CANDIDATE", "surviving_candidates": [],
+               "reason": "all killed"})
+    assert t.current_stage == "OUTWARD"
+
+
+def test_missing_disposition_raises(tmp_path):
+    t = _tree_at_adversarial(tmp_path)
+    with pytest.raises(ValueError, match="disposition"):
+        t.advance({"surviving_candidates": ["M1"], "attacks": []})
+
+
+def test_readiness_invariant_no_survivor(tmp_path):
+    t = _tree_at_adversarial(tmp_path)
+    with pytest.raises(ValueError, match="readiness invariant"):
+        t.advance({"disposition": "SURVIVES", "surviving_candidates": [],
+                   "required_mitigations": [], "falsification_tests": []})
+
+
+def test_readiness_invariant_mitigations_required(tmp_path):
+    t = _tree_at_adversarial(tmp_path)
+    with pytest.raises(ValueError, match="mitigations"):
+        t.advance({"disposition": "SURVIVES_WITH_MITIGATIONS", "surviving_candidates": ["M1"],
+                   "required_mitigations": [], "falsification_tests": []})
+
+
+def test_readiness_invariant_blocking_unknowns_block(tmp_path):
+    t = _tree_at_adversarial(tmp_path)
+    t.state["blocking_unknowns"] = [{"id": "U1", "question": "?"}]
+    ok, problems = t.synthesis_readiness(BASE_SURVIVOR)
+    assert not ok
+    assert any("blocking" in p for p in problems)
+
+
+def test_falsification_and_mitigations_survive_into_synthesis_inputs(tmp_path):
+    """§5: kill-tests and mitigations are first-class synthesis inputs."""
+    t = _tree_at_adversarial(tmp_path)
+    t.advance(BASE_SURVIVOR)
+    assert t.current_stage == "SYNTHESIS"
+    adv = t.state["artifacts"]["ADVERSARIAL"]
+    assert adv["falsification_tests"] == ["FT1", "FT2"]
+    assert adv["required_mitigations"] == ["mode labeling", "cache controls"]
+    # capsule hands them to SYNTHESIS
+    cap = t.capsule()
+    assert cap["accepted_artifacts"]["ADVERSARIAL"]["falsification_tests"] == ["FT1", "FT2"]
+
+
+def test_qualify_narrowed_outcomes(tmp_path):
+    t = _tree_at_adversarial(tmp_path)
+    t.advance(BASE_SURVIVOR)
+    for stage in ("SYNTHESIS", "QUALIFY"):
+        t.advance({"test": True} if stage == "SYNTHESIS" else {"outcome": "PROCEED"})
+    assert t.is_complete
+
+
+def test_qualify_refine_synthesis_returns_to_synthesis_only(tmp_path):
+    t = _tree_at_adversarial(tmp_path)
+    t.advance(BASE_SURVIVOR)
+    t.advance({"build_instructions": ["x"]})  # SYNTHESIS
+    t.advance({"outcome": "REFINE_SYNTHESIS", "reason": "rollback missing"})
+    assert t.current_stage == "SYNTHESIS"
+    # NOT OUTWARD, NOT a research repeat
+    assert "OUTWARD" not in t.state["targeted_branch_stages"] if "targeted_branch_stages" in t.state else True
+
+
+def test_qualify_reopen_earlier_stage_requires_full_fields(tmp_path):
+    t = _tree_at_adversarial(tmp_path)
+    t.advance(BASE_SURVIVOR)
+    t.advance({"build_instructions": ["x"]})
+    with pytest.raises(ValueError, match="REOPEN_EARLIER_STAGE requires"):
+        t.advance({"outcome": "REOPEN_EARLIER_STAGE", "reason": "assumption unverified"})
+
+
+def test_qualify_reopen_earlier_stage_routes(tmp_path):
+    t = _tree_at_adversarial(tmp_path)
+    t.advance(BASE_SURVIVOR)
+    t.advance({"build_instructions": ["x"]})
+    t.advance({
+        "outcome": "REOPEN_EARLIER_STAGE",
+        "reason": "synthesis assumes API X exists",
+        "return_to": "OUTWARD",
+        "new_blocking_fact": "API X was never established in any accepted artifact",
+        "why_previous_gate_could_not_reasonably_have_caught_it": "assumption first appears in synthesis text",
+        "required_fix": "targeted OUTWARD for API X",
+    })
+    assert t.current_stage == "OUTWARD"
+
+
+def test_qualify_invalid_outcome_rejected(tmp_path):
+    t = _tree_at_adversarial(tmp_path)
+    t.advance(BASE_SURVIVOR)
+    t.advance({"build_instructions": ["x"]})
+    with pytest.raises(ValueError, match="outcome"):
+        t.advance({"outcome": "MORE_RESEARCH"})
+
+
+def test_no_generic_more_research_route():
+    """§11: generic end-of-pipeline MORE_RESEARCH is not a valid outcome."""
+    assert "MORE_RESEARCH" not in rtt.QUALIFY_OUTCOMES
+    assert "MORE_RESEARCH" not in rtt.ADVERSARIAL_DISPOSITIONS
@@ -0,0 +1,123 @@
+"""Tests: RP4 APPLICABILITY executor + gate (#267).
+
+Gate semantics: candidates must be classified with evidence, route must be
+a valid decision, viable candidates must cite real OUTWARD sources.
+"""
+
+from __future__ import annotations
+
+import importlib.util
+import json
+import sys
+from pathlib import Path
+
+import pytest
+
+ROOT = Path(__file__).resolve().parent.parent
+
+for name, rel in [
+    ("research_task_tree", "scripts/research_task_tree.py"),
+    ("research_stage_executor", "scripts/research_stage_executor.py"),
+]:
+    if name not in sys.modules:
+        spec = importlib.util.spec_from_file_location(name, ROOT / rel)
+        mod = importlib.util.module_from_spec(spec)
+        sys.modules[name] = mod
+        spec.loader.exec_module(mod)
+
+rtt = sys.modules["research_task_tree"]
+rse = sys.modules["research_stage_executor"]
+
+
+@pytest.fixture
+def tree(tmp_path):
+    t = rtt.ResearchTaskTree(issue=970, round_no=1, artifact_dir=str(tmp_path / "research" / "issue-970"))
+    # advance through ISSUE→INWARD→OUTWARD
+    for stage in ("ISSUE", "INWARD", "OUTWARD"):
+        t.advance({"test": True, "route": None} if False else {"test": True})
+    assert t.current_stage == "APPLICABILITY"
+    # seed an OUTWARD artifact with known sources
+    t.state["artifacts"]["OUTWARD"] = {
+        "discovery": {"queries": [], "sources_discovered": [
+            {"id": "O1", "url": "https://example.org/a"},
+            {"id": "O2", "url": "https://example.org/b"},
+        ], "source_count": 2},
+        "reading": {"sources_read": ["O1"], "sources_selected": [], "evidence_extracted": 1},
+    }
+    return t
+
+
+def _executor(tree):
+    ex = rse.StageExecutor(issue=tree.issue, artifact_dir=tree.artifact_dir, round_no=tree.round)
+    # The executor loads its own tree from disk — seed OUTWARD there too so
+    # gate source-ID resolution has the same ground truth.
+    ex.tree.state["artifacts"]["OUTWARD"] = tree.state["artifacts"].get("OUTWARD", {})
+    return ex
+
+
+def test_valid_applicability_artifact_passes_gate(tree):
+    ex = _executor(tree)
+    artifact = ex._normalize_applicability_artifact({
+        "route": "STANDARD_SOLUTION_SUFFICIENT",
+        "candidates": [{
+            "id": "M1", "source_ids": ["O1"], "classification": "DIRECTLY_APPLICABLE",
+            "integration_point": "memory_store.recall", "benefit": "x", "cost": "low",
+            "architectural_fit": "ok", "authority_implications": "none",
+            "risks": [], "required_adaptation": [], "evidence": ["E1"],
+        }],
+    }, {"receipts": [], "event_counts": {}, "elapsed": 0.0}, {"attempt": 1})
+    assert ex._validate_applicability(artifact) == []
+    assert artifact["stage"] == "APPLICABILITY"
+
+
+def test_invalid_route_fails_gate(tree):
+    ex = _executor(tree)
+    artifact = ex._normalize_applicability_artifact(
+        {"route": "MAYBE", "candidates": []},
+        {"receipts": [], "event_counts": {}, "elapsed": 0.0}, {"attempt": 1})
+    errors = ex._validate_applicability(artifact)
+    assert any("invalid route" in e for e in errors)
+
+
+def test_unknown_source_citation_fails_gate(tree):
+    ex = _executor(tree)
+    artifact = ex._normalize_applicability_artifact({
+        "route": "STANDARD_SOLUTION_SUFFICIENT",
+        "candidates": [{"id": "M1", "source_ids": ["O99"], "classification": "DIRECTLY_APPLICABLE",
+                        "integration_point": "x", "evidence": ["E1"]}],
+    }, {"receipts": [], "event_counts": {}, "elapsed": 0.0}, {"attempt": 1})
+    errors = ex._validate_applicability(artifact)
+    assert any("unknown source" in e for e in errors)
+
+
+def test_viable_candidate_needs_integration_point_and_evidence(tree):
+    ex = _executor(tree)
+    artifact = ex._normalize_applicability_artifact({
+        "route": "INNOVATION_WARRANTED",
+        "candidates": [{"id": "M1", "source_ids": ["O1"], "classification": "APPLICABLE_WITH_ADAPTATION"}],
+    }, {"receipts": [], "event_counts": {}, "elapsed": 0.0}, {"attempt": 1})
+    errors = ex._validate_applicability(artifact)
+    assert any("no integration_point" in e for e in errors)
+    assert any("no evidence ids" in e for e in errors)
+
+
+def test_route_decision_drives_advance(tree):
+    """Tree-level: APPLICABILITY advance with INNOVATION_WARRANTED goes to INNOVATION;
+    STANDARD_SOLUTION_SUFFICIENT goes to ADVERSARIAL (skip)."""
+    tree.advance({"candidates": [], "route": "INNOVATION_WARRANTED"})
+    assert tree.current_stage == "INNOVATION"
+    t2 = rtt.ResearchTaskTree(issue=971, round_no=1, artifact_dir=str(tree.artifact_dir) + "-2")
+    for stage in ("ISSUE", "INWARD", "OUTWARD"):
+        t2.advance({"test": True})
+    t2.advance({"candidates": [], "route": "STANDARD_SOLUTION_SUFFICIENT"})
+    assert t2.current_stage == "ADVERSARIAL"
+    assert "INNOVATION" not in t2.state["completed_stages"]
+
+
+def test_applicability_requires_outward_artifact(tree, mock_gitea=None):
+    """Stage-ordering guard: no OUTWARD artifact → STAGE_FAILED, no MiMo call."""
+    ex = _executor(tree)
+    ex.tree.state["artifacts"]["OUTWARD"] = {}
+    result = ex._execute_applicability({"attempt": 1})
+    assert result["status"] == "STAGE_FAILED"
+    assert "OUTWARD artifact missing" in result["error"]
@@ -76,7 +76,7 @@ def test_full_eight_stage_chain_across_fresh_workspaces(workspace):
    """THE critical test: all 8 stages execute across 8 fresh workspaces,
    each loading persisted state from the previous stage."""
    results = []
-    max_iterations = 20  # MORE_RESEARCH may add extra rounds
+    max_iterations = 20  # REFINE may add extra rounds

    for i in range(max_iterations):
        tree = workspace.load_tree()
@@ -85,50 +85,52 @@ def test_full_eight_stage_chain_across_fresh_workspaces(workspace):
        stage = tree.current_stage
        result = workspace.execute_stage(tree)

-        # After QUALIFY, evaluate disposition (the workflow does this)
+        # After QUALIFY, evaluate outcome (narrowed QUALIFY semantics, §9)
        if stage == "QUALIFY":
            artifact = result["artifact"]
-            disposition = artifact.get("disposition", "PROCEED")
-            if disposition == "MORE_RESEARCH":
-                unknowns = artifact.get("blocking_unknowns", [])
-                tree.more_research(unknowns)
-            else:
+            outcome = artifact.get("outcome", "PROCEED")
+            if outcome == "REFINE_SYNTHESIS":
+                tree.round += 1
+                tree.state["round"] = tree.round
+                tree.save()
+            elif outcome == "PROCEED":
                tree.state["status"] = "COMPLETE"
                tree.save()
                break

        results.append(result)

-    # All 8 stages must have completed
+    # Canonical chain (fake worker routes INNOVATION_WARRANTED → 8 executions)
    assert len(results) >= 8, f"expected ≥8 stage executions, got {len(results)}"

    # The tree must be complete
    tree = workspace.load_tree()
    assert tree.is_complete, "research tree must reach COMPLETE status"

-    # Verify stage order was correct
+    # Verify stage order (canonical, both routes proven elsewhere;
+    # this chain exercises the INNOVATION_WARRANTED route)
    completed = tree.state["completed_stages"]
-    expected_order = ["DEFINE", "INWARD", "OUTWARD_DISCOVERY", "OUTWARD_READING",
-                      "ADVERSARIAL", "INNOVATION", "SYNTHESIS", "QUALIFY"]
+    expected_order = ["ISSUE", "INWARD", "OUTWARD", "APPLICABILITY",
+                      "INNOVATION", "ADVERSARIAL", "SYNTHESIS", "QUALIFY"]
    assert completed[:8] == expected_order, f"stage order mismatch: {completed}"


-def test_evidence_handoff_inward_receives_define(workspace):
-    """Prove DEFINE artifact actually reaches INWARD."""
-    # Execute DEFINE
+def test_evidence_handoff_inward_receives_issue_gate(workspace):
+    """Prove ISSUE-gate artifact actually reaches INWARD."""
+    # Execute ISSUE gate
    tree = workspace.load_tree()
    workspace.execute_stage(tree)

-    # Execute INWARD — the fake worker asserts DEFINE is present
+    # Execute INWARD — the fake worker asserts the gate artifact is present
    tree = workspace.load_tree()
    result = workspace.execute_stage(tree)
-    assert result["stage"] == "INWARD"  # didn't crash on missing DEFINE
+    assert result["stage"] == "INWARD"  # didn't crash on missing gate artifact


 def test_evidence_handoff_innovation_receives_all_evidence(workspace):
-    """Prove INNOVATION receives INWARD + OUTWARD + ADVERSARIAL evidence."""
-    # Execute DEFINE through ADVERSARIAL
-    for i in range(5):  # DEFINE, INWARD, OUTWARD_DISCOVERY, OUTWARD_READING, ADVERSARIAL
+    """Prove INNOVATION receives INWARD + OUTWARD + APPLICABILITY evidence."""
+    # Execute ISSUE through APPLICABILITY (canonical order: INNOVATION is 5th)
+    for i in range(4):  # ISSUE, INWARD, OUTWARD, APPLICABILITY
        tree = workspace.load_tree()
        workspace.execute_stage(tree)

@@ -147,9 +149,9 @@ def test_evidence_handoff_innovation_receives_all_evidence(workspace):
            f"candidate {c.get('id')} invalid category: {c.get('category')}"


-def test_more_research_creates_targeted_branch(workspace):
-    """QUALIFY round 1 returns MORE_RESEARCH → targeted branch dispatches round 2."""
-    # Execute all 8 stages (round 1), handling QUALIFY disposition
+def test_refine_synthesis_round_trip(workspace):
+    """QUALIFY round 1 returns REFINE_SYNTHESIS → SYNTHESIS v2 → QUALIFY v2 (§9)."""
+    # Round 1: full chain; QUALIFY returns REFINE_SYNTHESIS (fake worker)
    for i in range(20):
        tree = workspace.load_tree()
        if tree.is_complete:
@@ -157,19 +159,18 @@ def test_more_research_creates_targeted_branch(workspace):
        stage = tree.current_stage
        result = workspace.execute_stage(tree)
        if stage == "QUALIFY":
-            disposition = result["artifact"].get("disposition", "PROCEED")
-            if disposition == "MORE_RESEARCH":
-                unknowns = result["artifact"].get("blocking_unknowns", [])
-                tree.more_research(unknowns)
-            else:
+            outcome = result["artifact"].get("outcome", "PROCEED")
+            if outcome == "REFINE_SYNTHESIS":
+                tree.round += 1
+                tree.state["round"] = tree.round
+                tree.save()
+            elif outcome == "PROCEED":
                tree.state["status"] = "COMPLETE"
                tree.save()
                break

    tree = workspace.load_tree()
-    assert tree.state.get("blocking_unknowns"), "blocking unknowns must be recorded"
-
-    # Continue round 2: targeted branch + SYNTHESIS v2 + QUALIFY v2
+    # Round 2: SYNTHESIS v2 → QUALIFY v2 → PROCEED
    for i in range(20):
        tree = workspace.load_tree()
        if tree.is_complete:
@@ -177,18 +178,17 @@ def test_more_research_creates_targeted_branch(workspace):
        stage = tree.current_stage
        result = workspace.execute_stage(tree)
        if stage == "QUALIFY":
-            disposition = result["artifact"].get("disposition", "PROCEED")
-            if disposition == "MORE_RESEARCH":
-                unknowns = result["artifact"].get("blocking_unknowns", [])
-                tree.more_research(unknowns)
-            else:
+            outcome = result["artifact"].get("outcome", "PROCEED")
+            if outcome == "PROCEED":
                tree.state["status"] = "COMPLETE"
                tree.save()
                break

    tree = workspace.load_tree()
-    assert tree.is_complete, "round 2 must eventually reach COMPLETE"
-    assert tree.round >= 2, f"must have gone through at least 2 rounds, got round {tree.round}"
+    assert tree.is_complete, "round 2 must reach COMPLETE"
+    assert tree.round >= 2, f"REFINE_SYNTHESIS must trigger round 2, got round {tree.round}"
+    qual = tree.state["artifacts"].get("QUALIFY", {})
+    assert qual.get("outcome") == "PROCEED", f"final QUALIFY must be PROCEED: {qual}"


 def test_synthesis_receives_complete_evidence_record(workspace):
@@ -217,23 +217,23 @@ def test_synthesis_receives_complete_evidence_record(workspace):

 def test_state_persists_across_fresh_workspace_instances(workspace):
    """Prove that creating a NEW ResearchTaskTree from disk preserves state."""
-    # Execute DEFINE
+    # Execute ISSUE gate
    tree = workspace.load_tree()
-    assert tree.current_stage == "DEFINE"
+    assert tree.current_stage == "ISSUE"
    workspace.execute_stage(tree)

    # Simulate a completely fresh process: create a new tree from disk
    tree2 = workspace.load_tree()
    assert tree2.current_stage == "INWARD", \
        f"state must persist across workspaces: got {tree2.current_stage}, expected INWARD"
-    assert "DEFINE" in tree2.state["completed_stages"]
+    assert "ISSUE" in tree2.state["completed_stages"]

    # Execute INWARD from the fresh instance
    workspace.execute_stage(tree2)

    # Another fresh instance
    tree3 = workspace.load_tree()
-    assert tree3.current_stage == "OUTWARD_DISCOVERY"
+    assert tree3.current_stage == "OUTWARD"
    assert "INWARD" in tree3.state["completed_stages"]


@@ -246,8 +246,8 @@ def test_retry_on_stage_failure(workspace):
    assert tree.state["stage_history"][-1]["failed"] is True

    # The stage should still be the same (retry)
-    assert tree.current_stage == "DEFINE"
+    assert tree.current_stage == "ISSUE"

    # Retry succeeds
    result = workspace.execute_stage(tree)
-    assert result["stage"] == "DEFINE"
+    assert result["stage"] == "ISSUE"
@@ -0,0 +1,126 @@
+"""Tests: RP8 QUALIFY executor + gate (#271) — narrowed semantics.
+
+Deterministic-first readiness checks; MiMo semantic judgment only when
+deterministic checks pass; PROCEED/REFINE_SYNTHESIS normal outcomes;
+REOPEN_EARLIER_STAGE requires full justification fields.
+"""
+
+from __future__ import annotations
+
+import importlib.util
+import json
+import sys
+from pathlib import Path
+
+import pytest
+
+ROOT = Path(__file__).resolve().parent.parent
+
+for name, rel in [
+    ("research_task_tree", "scripts/research_task_tree.py"),
+    ("research_stage_executor", "scripts/research_stage_executor.py"),
+]:
+    if name not in sys.modules:
+        spec = importlib.util.spec_from_file_location(name, ROOT / rel)
+        mod = importlib.util.module_from_spec(spec)
+        sys.modules[name] = mod
+        spec.loader.exec_module(mod)
+
+rtt = sys.modules["research_task_tree"]
+rse = sys.modules["research_stage_executor"]
+
+
+def _tree_at_qualify(tmp_path, issue=986):
+    t = rtt.ResearchTaskTree(issue=issue, round_no=1, artifact_dir=str(tmp_path / f"research/issue-{issue}"))
+    for stage in ("ISSUE", "INWARD", "OUTWARD"):
+        t.advance({"test": True})
+    t.advance({"candidates": [{"id": "M1", "classification": "DIRECTLY_APPLICABLE"}],
+               "route": "STANDARD_SOLUTION_SUFFICIENT"})
+    t.advance({"disposition": "SURVIVES", "surviving_candidates": ["M1"],
+               "required_mitigations": [], "falsification_tests": ["FT1"], "attacks": []})
+    t.advance({"selected_design": "X", "interfaces": ["i"], "implementation_sequence": ["s"],
+               "acceptance_criteria": ["a"], "rollback": "delete",
+               "carried_mitigations": [], "carried_falsification_tests": ["FT1"],
+               "invariants": ["FT1 converted"]})
+    assert t.current_stage == "QUALIFY"
+    return t
+
+
+def _executor(tree):
+    ex = rse.StageExecutor(issue=tree.issue, artifact_dir=tree.artifact_dir, round_no=tree.round)
+    ex.tree.state["artifacts"]["SYNTHESIS"] = tree.state["artifacts"].get("SYNTHESIS", {})
+    return ex
+
+
+def test_all_checks_present_on_good_synthesis(tmp_path):
+    tree = _tree_at_qualify(tmp_path)
+    ex = _executor(tree)
+    synth = tree.state["artifacts"]["SYNTHESIS"]
+    assert synth.get("selected_design")
+    assert synth.get("rollback")
+
+
+def test_gate_rejects_invalid_outcome(tmp_path):
+    tree = _tree_at_qualify(tmp_path)
+    ex = _executor(tree)
+    bad = {"outcome": "MORE_RESEARCH", "findings": []}
+    assert any("invalid outcome" in e for e in ex._validate_qualify(bad))
+
+
+def test_gate_rejects_incomplete_reopen(tmp_path):
+    tree = _tree_at_qualify(tmp_path)
+    ex = _executor(tree)
+    bad = {"outcome": "PROCEED", "reopen": {"reason": "x"}}  # missing other fields
+    errors = ex._validate_qualify(bad)
+    assert any("new_blocking_fact" in e for e in errors)
+    assert any("why_previous_gate" in e for e in errors)
+
+
+def test_gate_accepts_complete_reopen(tmp_path):
+    tree = _tree_at_qualify(tmp_path)
+    ex = _executor(tree)
+    ok = {"outcome": "PROCEED", "reopen": None}
+    assert ex._validate_qualify(ok) == []
+
+
+def test_missing_synthesis_fails_stage(tmp_path):
+    tree = _tree_at_qualify(tmp_path)
+    ex = _executor(tree)
+    ex.tree.state["artifacts"]["SYNTHESIS"] = {}
+    result = ex._execute_qualify({"attempt": 1})
+    assert result["status"] == "STAGE_FAILED"
+
+
+def test_deterministic_failure_skips_mimo(tmp_path):
+    """A synthesis with no rollback fails deterministically — no MiMo call."""
+    tree = _tree_at_qualify(tmp_path)
+    ex = _executor(tree)
+    ex.tree.state["artifacts"]["SYNTHESIS"] = {"selected_design": "X", "rollback": ""}
+    result = ex._execute_qualify({"attempt": 1})
+    assert result["status"] == "STAGE_COMPLETED"
+    assert result["artifact"]["outcome"] == "REFINE_SYNTHESIS"
+    assert any("rollback" in f for f in result["artifact"]["findings"])
+    # No MiMo was invoked: no receipts, no elapsed
+    assert result["artifact"]["tool_receipts"] == []
+
+
+def test_qualify_proceed_completes_pipeline(tmp_path):
+    tree = _tree_at_qualify(tmp_path)
+    tree.advance({"outcome": "PROCEED"})
+    assert tree.is_complete
+    assert tree.state["qualify_outcome"] == "PROCEED"
+
+
+def test_qualify_refine_returns_to_synthesis_only(tmp_path):
+    tree = _tree_at_qualify(tmp_path)
+    tree.advance({"outcome": "REFINE_SYNTHESIS", "reason": "acceptance vague"})
+    assert tree.current_stage == "SYNTHESIS"
+
+
+def test_qualify_reopen_routes_to_earliest_stage(tmp_path):
+    tree = _tree_at_qualify(tmp_path)
+    tree.advance({"outcome": "REOPEN_EARLIER_STAGE", "reason": "assumes API X",
+                  "return_to": "OUTWARD", "new_blocking_fact": "API X never established",
+                  "why_previous_gate_could_not_reasonably_have_caught_it": "first appears in synthesis",
+                  "required_fix": "targeted OUTWARD"})
+    assert tree.current_stage == "OUTWARD"
@@ -1,4 +1,9 @@
-"""Tests: deterministic DEFINE — no MiMo unless ambiguous."""
+"""Tests: ISSUE deterministic intake/gate (replaces cognitive DEFINE).
+
+The Gitea issue is the authoritative statement of intent. This gate only
+compiles the contract — no model invocation, ever. Ambiguity is recorded
+as a signal, not a MiMo trigger.
+"""

 from __future__ import annotations

@@ -16,8 +21,8 @@ def test_bug_issue_is_repo_specific():
             "body": "The shard manager leaks connections when topics are created rapidly."}
    c = rd.compile_define_contract(issue)
    assert c["question_type"] == "repo-specific"
-    assert c["needs_mimo"] is False
-    assert "OUTWARD_DISCOVERY" not in c["required_stages"]
+    assert c["needs_mimo"] is False  # ISSUE NEVER invokes a model
+    assert "OUTWARD" not in c["required_stages"]


 def test_architecture_issue_is_mixed():
@@ -25,7 +30,8 @@ def test_architecture_issue_is_mixed():
             "body": "We need to choose the best approach for hybrid recall. Compare alternatives and benchmark them."}
    c = rd.compile_define_contract(issue)
    assert c["question_type"] in ("mixed", "current-tech")
-    assert "OUTWARD_DISCOVERY" in c["required_stages"]
+    assert "OUTWARD" in c["required_stages"]
+    # Design indicators → INNOVATION_WARRANTED is credible, so INNOVATION included
    assert "INNOVATION" in c["required_stages"]


@@ -33,7 +39,7 @@ def test_simple_bug_skips_outward():
    issue = {"number": 3, "title": "Fix import error in tui_validator",
             "body": "The import allowlist is wrong."}
    c = rd.compile_define_contract(issue)
-    assert "OUTWARD_DISCOVERY" in c.get("skipped_stages", {})
+    assert "OUTWARD" in c.get("skipped_stages", {})
    assert "INWARD" in c["required_stages"]


@@ -44,7 +50,19 @@ def test_subquestions_extracted():
    assert len(c["sub_questions"]) >= 2


-def test_ambiguous_issue_needs_mimo():
+def test_ambiguous_issue_records_signal_not_mimo():
+    """Ambiguity is a recorded signal for downstream stages — NOT a model trigger.
+    ISSUE must never invoke MiMo, even when the issue is ambiguous."""
    issue = {"number": 5, "title": "?", "body": ""}
    c = rd.compile_define_contract(issue)
-    assert c["needs_mimo"] is True
+    assert c["ambiguous"] is True
+    assert c["needs_mimo"] is False
+
+
+def test_retired_stage_names_absent_from_contract():
+    """Retired stages must not appear in any compiled contract field."""
+    for body in ("fix bug", "design architecture approach", "compare and benchmark"):
+        c = rd.compile_define_contract({"number": 9, "title": "t", "body": body})
+        for field in ("required_stages", "skipped_stages"):
+            for retired in ("DEFINE", "OUTWARD_DISCOVERY", "OUTWARD_READING"):
+                assert retired not in c[field], f"{retired} leaked into {field}"
@@ -110,13 +110,14 @@ def test_eight_stage_chain_fresh_workspaces(tmp_path):
        artifact = fw.run_fake_stage(tree)
        next_stage = tree.advance(artifact)

-        # Workflow-level disposition routing (like the workflow does)
+        # Workflow-level outcome routing (narrowed QUALIFY semantics)
        if stage == "QUALIFY":
-            disposition = artifact.get("disposition", "PROCEED")
-            if disposition == "MORE_RESEARCH":
-                unknowns = artifact.get("blocking_unknowns", [])
-                tree.more_research(unknowns)
-            else:
+            outcome = artifact.get("outcome", "PROCEED")
+            if outcome == "REFINE_SYNTHESIS":
+                tree.round += 1          # refinement round recorded
+                tree.state["round"] = tree.round
+                tree.save()              # next pass: PROCEED branch
+            elif outcome == "PROCEED":
                tree.state["status"] = "COMPLETE"
                tree.save()
                break
@@ -130,6 +131,6 @@ def test_eight_stage_chain_fresh_workspaces(tmp_path):

    tree = rtt.ResearchTaskTree(issue=999, artifact_dir=artifact_dir)
    assert tree.is_complete, f"pipeline must complete, got stage={tree.current_stage}"
-    assert tree.round >= 2, f"MORE_RESEARCH must trigger round 2, got round {tree.round}"
+    assert tree.round >= 2, f"REFINE must trigger round 2, got round {tree.round}"
    qual_artifact = tree.state["artifacts"].get("QUALIFY", {})
-    assert qual_artifact.get("disposition") == "PROCEED", f"final QUALIFY must be PROCEED, got {qual_artifact}"
+    assert qual_artifact.get("outcome") == "PROCEED", f"final QUALIFY must be PROCEED, got {qual_artifact}"
@@ -1,4 +1,9 @@
-"""Red-first tests for scripts/research_task_tree.py — RSC1."""
+"""Red-first tests for scripts/research_task_tree.py — RP1/RP2 canonical stage model.
+
+Supersedes RSC1-era tests: ISSUE replaces DEFINE, APPLICABILITY added,
+INNOVATION precedes ADVERSARIAL, retired stages cannot become READY,
+targeted refinement routes to earliest deficient stage.
+"""

 from __future__ import annotations

@@ -14,30 +19,132 @@ rtt = importlib.util.module_from_spec(SPEC)
 SPEC.loader.exec_module(rtt)


+def _walk(tree):
+    """Stage-aware full-chain walk: supplies mandatory routing fields
+    (APPLICABILITY route, ADVERSARIAL disposition, QUALIFY outcome)."""
+    for stage in rtt.STAGES:
+        if tree.current_stage == "APPLICABILITY":
+            tree.advance({"route": "STANDARD_SOLUTION_SUFFICIENT"})
+        elif tree.current_stage == "ADVERSARIAL":
+            tree.advance({"disposition": "SURVIVES", "surviving_candidates": ["M1"],
+                          "falsification_tests": [], "attacks": [
+                              {"id": "A1", "target_candidate": "M1",
+                               "dimension": "failure modes", "finding": "x"}]})
+        elif tree.current_stage == "QUALIFY":
+            tree.advance({"outcome": "PROCEED"})
+        else:
+            tree.advance({"test": True})
+
+
@pytest.fixture
 def tree(tmp_path):
    return rtt.ResearchTaskTree(issue=999, round_no=1, artifact_dir=str(tmp_path / "research" / "issue-999"))


-def test_initial_state_starts_at_define(tree):
-    assert tree.current_stage == "DEFINE"
+def test_initial_state_starts_at_issue_gate(tree):
+    """Canonical RP2: ISSUE (deterministic gate) is stage 0, not DEFINE."""
+    assert tree.current_stage == "ISSUE"
    assert not tree.is_complete
    assert tree.state["completed_stages"] == []


+def test_canonical_stage_order():
+    """Canonical pipeline: ISSUE→INWARD→OUTWARD→APPLICABILITY→INNOVATION→ADVERSARIAL→SYNTHESIS→QUALIFY."""
+    assert rtt.STAGES == [
+        "ISSUE", "INWARD", "OUTWARD", "APPLICABILITY",
+        "INNOVATION", "ADVERSARIAL", "SYNTHESIS", "QUALIFY",
+    ]
+    # APPLICABILITY must exist and precede INNOVATION/ADVERSARIAL
+    assert "APPLICABILITY" in rtt.STAGES
+    assert rtt.STAGES.index("APPLICABILITY") < rtt.STAGES.index("INNOVATION")
+    assert rtt.STAGES.index("APPLICABILITY") < rtt.STAGES.index("ADVERSARIAL")
+
+
+def test_retired_stage_names_are_declared():
+    """26.5: retired stage identifiers are explicit and absent from canonical stages."""
+    assert rtt.RETIRED_STAGES == {"DEFINE", "OUTWARD_DISCOVERY", "OUTWARD_READING"}
+    for retired in rtt.RETIRED_STAGES:
+        assert retired not in rtt.STAGES
+
+
+def test_retired_stages_cannot_become_ready(tmp_path):
+    """RP2/26.5: a tree loaded from legacy persisted state at a retired stage
+    must refuse to advance it. Old authorities cannot quietly run."""
+    legacy_dir = tmp_path / "research" / "issue-legacy"
+    legacy_dir.mkdir(parents=True)
+    legacy_state = {
+        "issue": 998, "round": 1,
+        "current_stage": "OUTWARD_DISCOVERY",
+        "completed_stages": ["DEFINE", "INWARD"],
+        "artifacts": {}, "blocking_unknowns": [],
+        "status": "ACTIVE", "stage_history": [],
+    }
+    (legacy_dir / "task_tree.json").write_text(json.dumps(legacy_state))
+    legacy_tree = rtt.ResearchTaskTree(issue=998, round_no=1, artifact_dir=str(legacy_dir))
+    assert legacy_tree.current_stage == "OUTWARD_DISCOVERY"
+    with pytest.raises(ValueError, match="retired"):
+        legacy_tree.advance({})
+
+
+def test_retired_stage_cannot_be_routed_by_more_research(tree):
+    """RP2/26.5: targeted refinement routes external unknowns to unified OUTWARD,
+    never OUTWARD_DISCOVERY/OUTWARD_READING."""
+    while tree.current_stage != "QUALIFY":
+        cs = tree.current_stage
+        if cs == "APPLICABILITY":
+            tree.advance({"route": "STANDARD_SOLUTION_SUFFICIENT"})
+        elif cs == "ADVERSARIAL":
+            tree.advance({"disposition": "SURVIVES", "surviving_candidates": ["M1"], "falsification_tests": []})
+        else:
+            tree.advance({})
+    branches = tree.more_research([
+        {"id": "U1", "question": "is Y maintained?", "type": "current-tech"},
+        {"id": "U2", "question": "what does research say?", "type": "academic"},
+    ])
+    for b in branches:
+        assert b["stages"] == ["OUTWARD"]
+    assert tree.current_stage == "OUTWARD"
+    # No branch may contain a retired stage name
+    for b in branches:
+        assert not (set(b["stages"]) & rtt.RETIRED_STAGES)
+
+
+def test_targeted_refinement_routes_to_earliest_deficient_stage(tree):
+    """§14: REFINE routes to the earliest deficient stage, not first-listed."""
+    while tree.current_stage != "QUALIFY":
+        cs = tree.current_stage
+        if cs == "APPLICABILITY":
+            tree.advance({"route": "STANDARD_SOLUTION_SUFFICIENT"})
+        elif cs == "ADVERSARIAL":
+            tree.advance({"disposition": "SURVIVES", "surviving_candidates": ["M1"], "falsification_tests": []})
+        else:
+            tree.advance({})
+    branches = tree.more_research([
+        {"id": "U1", "question": "late-stage gap", "type": "counter-evidence"},
+        {"id": "U2", "question": "early evidence gap", "type": "current-tech"},
+    ])
+    assert branches[0]["stages"] == ["ADVERSARIAL"]
+    assert branches[1]["stages"] == ["OUTWARD"]
+    # OUTWARD (idx 2) is earlier than ADVERSARIAL (idx 5) → current stage is OUTWARD
+    assert tree.current_stage == "OUTWARD"
+    assert tree.state["targeted_return_stage"] == "SYNTHESIS"
+
+
 def test_advance_through_all_stages(tree):
-    for stage in rtt.STAGES:
-        assert tree.current_stage == stage
-        tree.advance({"test": True})
+    """Canonical walk with INNOVATION_WARRANTED route (INNOVATION is conditional).
+    Skipped-INNOVATION walk is covered by test_applicability_skips_innovation_by_default."""
+    _walk(tree)
    assert tree.current_stage == "QUALIFY"
-    assert len(tree.state["completed_stages"]) == 8
+    # 7 stages: INNOVATION skipped by default (conditional, never ceremonial)
+    assert len(tree.state["completed_stages"]) == 7
+    assert "INNOVATION" not in tree.state["completed_stages"]


 def test_state_persists_to_disk(tree):
-    tree.advance({"define": "data"})
+    tree.advance({"issue_gate": "passed"})
    tree2 = rtt.ResearchTaskTree(issue=999, round_no=1, artifact_dir=tree.artifact_dir)
    assert tree2.current_stage == "INWARD"
-    assert "DEFINE" in tree2.state["completed_stages"]
+    assert "ISSUE" in tree2.state["completed_stages"]


 def test_fail_records_reason(tree):
@@ -46,39 +153,34 @@ def test_fail_records_reason(tree):
    assert "test failure" in tree.state["stage_history"][-1]["reason"]


-def test_more_research_creates_targeted_branches(tree):
-    # advance to QUALIFY first
-    for stage in rtt.STAGES:
-        tree.advance({})
-    unknowns = [
-        {"id": "U1", "question": "does X work?", "type": "repo/inward"},
-        {"id": "U2", "question": "is Y maintained?", "type": "current-tech"},
-        {"id": "U3", "question": "has Z failed in production?", "type": "counter-evidence"},
-    ]
-    branches = tree.more_research(unknowns)
-    assert len(branches) == 3
-    assert branches[0]["stages"] == ["INWARD"]
-    assert branches[1]["stages"] == ["OUTWARD_DISCOVERY", "OUTWARD_READING"]
-    assert branches[2]["stages"] == ["ADVERSARIAL"]
-    assert tree.round == 2
+def test_applicability_artifact_file_declared():
+    """RP4 prerequisite: APPLICABILITY has a canonical artifact file and classes."""
+    assert rtt.STAGE_ARTIFACT_FILES["APPLICABILITY"] == "applicability.json"
+    for cls in (
+        "DIRECTLY_APPLICABLE", "APPLICABLE_WITH_ADAPTATION", "CONFLICTS_WITH_RUNE",
+        "TOO_COMPLEX_FOR_VALUE", "INSUFFICIENT_EVIDENCE", "PROMISING_FOR_INNOVATION",
+    ):
+        assert cls in rtt.APPLICABILITY_CLASSES


 def test_capsule_contains_process_state(tree):
-    tree.advance({"decision": "define test artifact"})
+    tree.advance({"decision": "issue gate passed"})
    cap = tree.capsule()
    assert cap["current_stage"] == "INWARD"
    assert cap["issue"] == 999
-    assert "DEFINE" in cap["completed_stages"]
+    assert "ISSUE" in cap["completed_stages"]
    assert "expected_completion_artifact" in cap


 def test_get_prior_artifacts_for_stage(tree):
-    tree.advance({"define_decision": "hybrid"})
+    tree.advance({"issue_gate_decision": "buildable"})
    tree.advance({"inward_claims": ["claim1"]})
-    priors = tree.get_prior_artifacts("OUTWARD_DISCOVERY")
-    assert "DEFINE" in priors
+    priors = tree.get_prior_artifacts("OUTWARD")
+    assert "ISSUE" in priors
    assert "INWARD" in priors
-    assert "OUTWARD_DISCOVERY" not in priors
+    # Downstream artifacts are not exposed to earlier stages
+    assert "APPLICABILITY" not in priors
+    assert "SYNTHESIS" not in priors


 def test_task_tree_json_is_valid_on_disk(tree):
@@ -87,3 +189,143 @@ def test_task_tree_json_is_valid_on_disk(tree):
    data = json.loads(path.read_text())
    assert data["issue"] == 999
    assert data["current_stage"] == "INWARD"
+
+
+# ── Conditional INNOVATION (semantic correction 2026-09-09) ──────────────
+
+def _advance_to(tree, target):
+    """Advance a fresh tree to the given stage via canonical walk."""
+    for stage in rtt.STAGES:
+        if tree.current_stage == target:
+            return
+        tree.advance({"test": True})
+
+
+def test_applicability_skips_innovation_by_default(tree):
+    """APPLICABILITY artifact without route → STANDARD_SOLUTION_SUFFICIENT → ADVERSARIAL."""
+    for stage in ("ISSUE", "INWARD", "OUTWARD", "APPLICABILITY"):
+        assert tree.current_stage == stage
+        tree.advance({"test": True})
+    # INNOVATION skipped; ADVERSARIAL is next
+    assert tree.current_stage == "ADVERSARIAL"
+    assert tree.state["applicability_route"] == "STANDARD_SOLUTION_SUFFICIENT"
+    # INNOVATION must NOT be recorded as completed
+    assert "INNOVATION" not in tree.state["completed_stages"]
+
+
+def test_applicability_can_route_to_innovation(tree):
+    """APPLICABILITY route=INNOVATION_WARRANTED → INNOVATION → ADVERSARIAL."""
+    for stage in ("ISSUE", "INWARD", "OUTWARD"):
+        tree.advance({"test": True})
+    assert tree.current_stage == "APPLICABILITY"
+    tree.advance({"test": True, "route": "INNOVATION_WARRANTED"})
+    assert tree.current_stage == "INNOVATION"
+    tree.advance({"candidates": [], "conclusion": "NO_INNOVATION_WARRANTED"})
+    assert tree.current_stage == "ADVERSARIAL"
+
+
+def test_applicability_invalid_route_rejected(tree):
+    """APPLICABILITY route must be a valid decision, not freeform prose."""
+    for stage in ("ISSUE", "INWARD", "OUTWARD"):
+        tree.advance({"test": True})
+    with pytest.raises(ValueError, match="route"):
+        tree.advance({"test": True, "route": "MAYBE_INNOVATE_A_BIT"})
+
+
+def test_no_innovation_warranted_is_valid_conclusion():
+    """NO_INNOVATION_WARRANTED is a SUCCESS result, not a failure."""
+    assert "NO_INNOVATION_WARRANTED" in rtt.INNOVATION_CONCLUSIONS
+    # And skipping INNOVATION entirely is the default
+    assert "STANDARD_SOLUTION_SUFFICIENT" in rtt.APPLICABILITY_ROUTES
+
+
+def test_full_chain_both_routes(tmp_path):
+    """Both routes reach SYNTHESIS; skipped-INNOVATION chain is one stage shorter."""
+    # Route A: skip INNOVATION (stage-aware walk on CURRENT stage)
+    t1 = rtt.ResearchTaskTree(issue=990, round_no=1, artifact_dir=str(tmp_path / "a"))
+    while t1.current_stage != "QUALIFY":
+        cs = t1.current_stage
+        if cs == "APPLICABILITY":
+            t1.advance({"route": "STANDARD_SOLUTION_SUFFICIENT"})
+        elif cs == "ADVERSARIAL":
+            t1.advance({"disposition": "SURVIVES", "surviving_candidates": ["M1"], "falsification_tests": []})
+        else:
+            t1.advance({"test": True})
+    assert "INNOVATION" not in t1.state["completed_stages"]
+    assert t1.state["completed_stages"].index("ADVERSARIAL") == t1.state["completed_stages"].index("APPLICABILITY") + 1
+
+    # Route B: INNOVATION runs between APPLICABILITY and ADVERSARIAL
+    t2 = rtt.ResearchTaskTree(issue=991, round_no=1, artifact_dir=str(tmp_path / "b"))
+    while t2.current_stage != "QUALIFY":
+        cs = t2.current_stage
+        if cs == "APPLICABILITY":
+            t2.advance({"route": "INNOVATION_WARRANTED"})
+        elif cs == "INNOVATION":
+            t2.advance({"conclusion": "ADOPT", "candidates": [{"id": "C1", "category": "ADAPT", "derived_from": ["I1"]}]})
+        elif cs == "ADVERSARIAL":
+            t2.advance({"disposition": "SURVIVES", "surviving_candidates": ["C1"], "falsification_tests": []})
+        else:
+            t2.advance({"test": True})
+    completed = t2.state["completed_stages"]
+    assert completed.index("APPLICABILITY") < completed.index("INNOVATION") < completed.index("ADVERSARIAL")
+
+
+def test_refinement_routes_to_innovation_and_skips(tree):
+    """§14: refinement may route to INNOVATION or bypass it to ADVERSARIAL,
+    depending on the unknown type — never a blind full walk."""
+    while tree.current_stage != "QUALIFY":
+        cs = tree.current_stage
+        if cs == "APPLICABILITY":
+            tree.advance({"route": "STANDARD_SOLUTION_SUFFICIENT"})
+        elif cs == "ADVERSARIAL":
+            tree.advance({"disposition": "SURVIVES", "surviving_candidates": ["M1"], "falsification_tests": []})
+        else:
+            tree.advance({"test": True})
+    # Cross-domain opportunity → INNOVATION
+    branches = tree.more_research([{"id": "U1", "question": "cross-domain idea?", "type": "innovation"}])
+    assert branches[0]["stages"] == ["INNOVATION"]
+    assert tree.current_stage == "INNOVATION"
+    # Mechanism weakness → ADVERSARIAL directly (INNOVATION not re-run)
+    tree2 = rtt.ResearchTaskTree(issue=992, round_no=1, artifact_dir=str(tree.artifact_dir) + "2")
+    while tree2.current_stage != "QUALIFY":
+        cs = tree2.current_stage
+        if cs == "APPLICABILITY":
+            tree2.advance({"route": "STANDARD_SOLUTION_SUFFICIENT"})
+        elif cs == "ADVERSARIAL":
+            tree2.advance({"disposition": "SURVIVES", "surviving_candidates": ["M1"], "falsification_tests": []})
+        else:
+            tree2.advance({"test": True})
+    branches2 = tree2.more_research([{"id": "U2", "question": "does the leading option break?", "type": "counter-evidence"}])
+    assert branches2[0]["stages"] == ["ADVERSARIAL"]
+    assert tree2.current_stage == "ADVERSARIAL"
+
+
+def test_issue_gate_is_deterministic_no_mimo():
+    """ISSUE is a deterministic intake/gate pseudo-stage — NOT a resurrected DEFINE.
+    The module must not import subprocess/network/model-invocation machinery,
+    and the executor's ISSUE path must not spawn MiMo."""
+    import importlib.util as _ilu
+    import sys as _sys
+    spec = _ilu.spec_from_file_location("research_define_check", ROOT / "scripts" / "research_define.py")
+    mod = _ilu.module_from_spec(spec)
+    spec.loader.exec_module(mod)
+    banned = {"subprocess", "requests", "httpx", "urllib.request", "socket", "http.client"}
+    imported = set(getattr(mod, "__dict__", {}).keys()) | {
+        m.split(".")[0] for m in _sys.modules if m.split(".")[0] in banned
+        and m in getattr(mod, "__dict__", {}).values().__iter__.__self__.__dict__  # noqa — placeholder
+    } if False else set()
+    # Direct source inspection is the honest check
+    src = (ROOT / "scripts" / "research_define.py").read_text()
+    for banned_mod in ("import subprocess", "import requests", "import httpx", "import socket",
+                       "from urllib", "urlopen", "webfetch"):
+        assert banned_mod not in src, f"ISSUE/DEFINE compiler must not reference {banned_mod}"
+    # needs_mimo must be hardwired False (compat shim) — ISSUE never invokes a model
+    assert "needs_mimo" in src
+    spec2 = _ilu.spec_from_file_location("research_define_check2", ROOT / "scripts" / "research_define.py")
+    rd = _ilu.module_from_spec(spec2)
+    spec2.loader.exec_module(rd)
+    issue = {"number": 42, "title": "Anything at all", "body": ""}
+    c = rd.compile_define_contract(issue)
+    assert c["needs_mimo"] is False
+    # And the canonical ISSUE stage artifact file is a gate artifact, not define.json
+    assert rtt.STAGE_ARTIFACT_FILES["ISSUE"] == "issue_gate.json"
@@ -1,173 +0,0 @@
-"""Red-first tests for scripts/run_agent_stage.py — the generic headless
-cognitive stage runner (P0.2 of the Forge Cognitive Research Loop handoff).
-
-Invariants frozen here:
-  - The runner is TRANSPORT, not judgment: it reads issue state, checks
-    stage eligibility, invokes the agent adapter, captures the event stream,
-    extracts tool receipts, validates the output schema, and persists a
-    result. It never decides research quality.
-  - Tool receipts are derived from the STRUCTURED EVENT STREAM, never from
-    model self-report ("I searched the web" proves nothing).
-  - Restart safety: a crashed stage leaves the lock released (expire by
-    timestamp); an idempotency key (issue+stage+round) prevents duplicates.
-  - Fail loud: adapter crash, invalid schema, or missing receipt = failure
-    return, never a silent success.
-"""
-
-from __future__ import annotations
-
-import importlib.util
-import json
-from pathlib import Path
-
-import pytest
-
-ROOT = Path(__file__).resolve().parent.parent
-SPEC = importlib.util.spec_from_file_location("run_agent_stage", ROOT / "scripts" / "run_agent_stage.py")
-rs_mod = importlib.util.module_from_spec(SPEC)
-SPEC.loader.exec_module(rs_mod)
-
-
-# ---------------------------------------------------------------- event stream
-
-
-def _ev(kind, **kw):
-    return {"type": kind, "part": kw}
-
-
-RESEARCH_EVENTS = [
-    _ev("step_start"),
-    _ev(
-        "tool",
-        tool="webfetch",
-        state={
-            "status": "completed",
-            "input": {"url": "https://duckduckgo.com/html/?q=grimp+python"},
-            "output": "results...",
-        },
-    ),
-    _ev(
-        "tool",
-        tool="webfetch",
-        state={
-            "status": "completed",
-            "input": {"url": "https://github.com/pytest-dev/pytest"},
-            "output": "repo page...",
-        },
-    ),
-    _ev(
-        "tool",
-        tool="read",
-        state={"status": "completed", "input": {"file_path": "src/rune/foo.py"}, "output": "code..."},
-    ),
-    _ev("text", text="partial"),
-    _ev(
-        "tool",
-        tool="webfetch",
-        state={"status": "error", "input": {"url": "https://dead.example.com"}, "output": "ERR"},
-    ),
-    _ev("text", text="final answer"),
-    _ev("step_finish"),
-]
-
-
-def test_receipt_counts_from_events_not_prose():
-    receipt = rs_mod.build_receipt(RESEARCH_EVENTS)
-    assert receipt["search_or_fetch_calls"] == 2  # completed webfetch; the errored one is counted separately
-    assert receipt["failed_calls"] == 1
-    assert receipt["distinct_web_domains"] == 2  # duckduckgo + github (dead.example errored: never actually read)
-    assert receipt["repo_read_calls"] == 1
-
-
-def test_receipt_rejects_self_report():
-    """A text-only stream (no tool events) yields an EMPTY receipt —
-    'I searched the web' in the final text proves nothing."""
-    events = [_ev("step_start"), _ev("text", text="I searched the web thoroughly."), _ev("step_finish")]
-    receipt = rs_mod.build_receipt(events)
-    assert receipt["search_or_fetch_calls"] == 0
-
-
-def test_final_text_extracts_last_text_part():
-    text = rs_mod.extract_final_text(RESEARCH_EVENTS)
-    assert text == "final answer"
-
-
-def test_outward_validity_requires_two_distinct_fetched_domains():
-    receipt = rs_mod.build_receipt(RESEARCH_EVENTS)
-    assert rs_mod.outward_valid(receipt) is True
-    weak = [
-        _ev("tool", tool="webfetch", state={"status": "completed", "input": {"url": "https://a.com/x"}, "output": "y"}),
-        _ev("text", text="done"),
-    ]
-    assert rs_mod.outward_valid(rs_mod.build_receipt(weak)) is False  # one domain only
-    prose_only = rs_mod.build_receipt([_ev("text", text="I read five great sources")])
-    assert rs_mod.outward_valid(prose_only) is False
-
-
-# ---------------------------------------------------------------- lock semantics
-
-
-def test_lock_acquire_release(tmp_path):
-    lock = tmp_path / "locks" / "issue-42-research-r1.lock"
-    assert rs_mod.acquire_lock(str(lock), ttl_secs=3600) is True
-    assert rs_mod.acquire_lock(str(lock), ttl_secs=3600) is False  # second run blocked
-    rs_mod.release_lock(str(lock))
-    assert rs_mod.acquire_lock(str(lock), ttl_secs=3600) is True
-
-
-def test_stale_lock_expires(tmp_path):
-    """Crashed stage: lock older than TTL does not block the next dispatch."""
-    import os, time as _time
-
-    lock = tmp_path / "locks" / "issue-7-research-r1.lock"
-    lock.parent.mkdir(parents=True)
-    lock.write_text("dead-pid")
-    old = _time.time() - 7200
-    os.utime(lock, (old, old))
-    assert rs_mod.acquire_lock(str(lock), ttl_secs=3600) is True  # stale -> taken over
-
-
-# ---------------------------------------------------------------- schema
-
-VALID_RESULT = {
-    "issue": 42,
-    "stage": "research",
-    "round": 1,
-    "final_text": "...",
-    "receipt": {"search_or_fetch_calls": 2, "distinct_web_domains": 2, "failed_calls": 0, "repo_read_calls": 1},
-    "disposition": "PROCEED",
-}
-
-
-def test_validate_result_schema_accepts_valid():
-    assert rs_mod.validate_result(VALID_RESULT) == []
-
-
-def test_validate_result_schema_rejects_missing_fields():
-    bad = {"issue": 42, "stage": "research"}
-    errs = rs_mod.validate_result(bad)
-    assert any("final_text" in e for e in errs)
-    assert any("receipt" in e for e in errs)
-
-
-def test_research_stage_requires_outward_valid_receipt():
-    bad = dict(
-        VALID_RESULT,
-        receipt={"search_or_fetch_calls": 0, "distinct_web_domains": 0, "failed_calls": 0, "repo_read_calls": 0},
-    )
-    errs = rs_mod.validate_result(bad, stage="research")
-    assert any("OUTWARD" in e for e in errs)
-
-
-# ---------------------------------------------------------------- eligibility
-
-
-def test_eligibility_requires_label_and_no_running():
-    issue = {"labels": [{"name": "research-pending"}]}
-    assert rs_mod.stage_eligible(issue, "research", running=False) is True
-    assert rs_mod.stage_eligible(issue, "research", running=True) is False
-    assert rs_mod.stage_eligible({"labels": []}, "research", running=False) is False
-
-
-def test_idempotency_key_shape():
-    assert rs_mod.idempotency_key(42, "research", 1) == "issue-42-research-r1"
@@ -0,0 +1,146 @@
+"""Red-first tests for scripts/runner_evidence.py — RP2/#265 runner placement.
+
+THE HEAVY RUNNER IS THE DESKTOP PC, NOT THE PI.
+A desktop-heavy stage executed on the Pi must NOT count as valid acceptance.
+Evidence must be captured at runtime, not inferred from configuration.
+"""
+
+from __future__ import annotations
+
+import importlib.util
+import json
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parent.parent
+SPEC = importlib.util.spec_from_file_location("runner_evidence", ROOT / "scripts" / "runner_evidence.py")
+re_mod = importlib.util.module_from_spec(SPEC)
+SPEC.loader.exec_module(re_mod)
+
+
+def test_evidence_captures_hostname_and_identity(monkeypatch):
+    monkeypatch.delenv("RUNNER_NAME", raising=False)
+    monkeypatch.delenv("GITEA_RUNNER_NAME", raising=False)
+    ev = re_mod.capture_execution_evidence("OUTWARD", issue=300, process_id="research-300-r1")
+    assert ev["runner_hostname"]
+    assert ev["runner_name"].startswith("local:")
+    assert ev["stage"] == "OUTWARD"
+    assert ev["issue_id"] == 300
+    assert ev["research_process_id"] == "research-300-r1"
+    assert ev["timestamp"]  # actual timestamp, not inferred
+
+
+def test_evidence_reads_runner_env(monkeypatch):
+    monkeypatch.setenv("RUNNER_NAME", "rune-ci-desktop")
+    monkeypatch.setenv("RUNNER_LABELS", "rune-ci-desktop,desktop-heavy")
+    ev = re_mod.capture_execution_evidence("OUTWARD")
+    assert ev["runner_name"] == "rune-ci-desktop"
+    assert "rune-ci-desktop" in ev["runner_labels"]
+
+
+def test_desktop_execution_accepted():
+    ev = {
+        "runner_hostname": "nick-desktop",
+        "runner_name": "rune-ci-desktop",
+        "runner_labels": ["rune-ci-desktop"],
+        "execution_class": "desktop-heavy",
+        "stage": "OUTWARD",
+        "timestamp": "2026-09-09T00:00:00+00:00",
+    }
+    ok, violations = re_mod.validate_placement(ev)
+    assert ok, violations
+
+
+def test_desktop_heavy_on_pi_rejected():
+    """THE negative acceptance: Pi execution of a desktop-heavy stage = REJECT."""
+    ev = {
+        "runner_hostname": "rune-pi",
+        "runner_name": "rune-infra-pi",
+        "runner_labels": ["rune-infra-pi:host"],
+        "execution_class": "desktop-heavy",
+        "stage": "OUTWARD",
+        "timestamp": "2026-09-09T00:00:00+00:00",
+    }
+    ok, violations = re_mod.validate_placement(ev)
+    assert not ok
+    assert any("PLACEMENT VIOLATION" in v for v in violations)
+
+
+def test_pi_via_hostname_only_rejected():
+    """Cannot hide the Pi behind a desktop runner name — hostname is checked too."""
+    ev = {
+        "runner_hostname": "raspberrypi",
+        "runner_name": "rune-ci-desktop",
+        "runner_labels": ["rune-ci-desktop"],
+        "execution_class": "desktop-heavy",
+        "stage": "SYNTHESIS",
+        "timestamp": "2026-09-09T00:00:00+00:00",
+    }
+    ok, violations = re_mod.validate_placement(ev)
+    assert not ok
+
+
+def test_missing_evidence_fields_rejected():
+    """Incomplete evidence is not acceptance — identity must be actually captured."""
+    ev = {"runner_name": "rune-ci-desktop", "stage": "OUTWARD"}
+    ok, violations = re_mod.validate_placement(ev)
+    assert not ok
+    assert any("missing field" in v for v in violations)
+
+
+def test_unknown_runner_rejected_for_heavy_stage():
+    """No silent fallback: an unverified runner cannot execute heavy stages."""
+    ev = {
+        "runner_hostname": "some-laptop",
+        "runner_name": "mystery-runner",
+        "runner_labels": ["mystery-runner"],
+        "execution_class": "desktop-heavy",
+        "stage": "OUTWARD",
+        "timestamp": "2026-09-09T00:00:00+00:00",
+    }
+    ok, violations = re_mod.validate_placement(ev)
+    assert not ok
+    assert any("not 'rune-ci-desktop'" in v for v in violations)
+
+
+def test_all_canonical_stages_are_desktop_heavy():
+    """Every cognitive stage requires the desktop. ISSUE gate is deterministic
+    but still validated for placement completeness."""
+    for stage in ("INWARD", "OUTWARD", "APPLICABILITY", "INNOVATION",
+                  "ADVERSARIAL", "SYNTHESIS", "QUALIFY"):
+        assert stage in re_mod.DESKTOP_HEAVY_STAGES
+
+
+def test_lightweight_pi_operations_allowed():
+    """Forge/control work (metadata, labels, eligibility) may run on the Pi."""
+    ev = {
+        "runner_hostname": "rune-pi",
+        "runner_name": "rune-infra-pi",
+        "runner_labels": ["rune-infra-pi:host"],
+        "execution_class": "pi-lightweight",
+        "stage": "label_change",
+        "timestamp": "2026-09-09T00:00:00+00:00",
+    }
+    ok, violations = re_mod.validate_placement(ev)
+    assert ok, violations
+
+
+def test_evidence_serializes_to_artifact():
+    ev = re_mod.capture_execution_evidence("OUTWARD", issue=1, process_id="research-1-r1")
+    summarized = re_mod.summarize_for_artifact(ev)
+    assert "monotonic" not in summarized
+    json.dumps(summarized)  # must be JSON-serializable for artifact embedding
+
+
+def test_registered_runner_name_accepted():
+    """The Gitea-registered runner NAME (rune-desktop) with the desktop label
+    is a valid desktop identity — this is the exact identity CI jobs carry."""
+    ev = {
+        "runner_hostname": "nick-desktop",
+        "runner_name": "rune-desktop",
+        "runner_labels": ["rune-ci-desktop"],
+        "execution_class": "desktop-heavy",
+        "stage": "OUTWARD",
+        "timestamp": "2026-09-09T10:00:00+00:00",
+    }
+    ok, violations = re_mod.validate_placement(ev)
+    assert ok, violations
@@ -63,8 +63,6 @@ def test_version_behind_tag_is_anomaly_not_skip():
        ".gitea/workflows/merge-robot.yml",
        ".gitea/workflows/ci.yml",
        ".gitea/workflows/pipeline-gate.yml",
-        ".gitea/workflows/research-stage-headless.yml",
-        ".gitea/workflows/research-backlog-sweep.yml",
        ".gitea/workflows/spec-gate-headless.yml",
    ],
 )
@@ -0,0 +1,194 @@
+"""Tests: OBS-1 StageAttempt telemetry (#287).
+
+Acceptance rules:
+- every attempt (success AND failure) persists independently
+- restart/reload does not lose attempts
+- telemetry is observational: identical process decisions with and without it
+- sanity matrix: successful stage → failed stage → retry → successful retry
+- categories are observed, not asserted additive
+"""
+
+from __future__ import annotations
+
+import importlib.util
+import json
+import sys
+from pathlib import Path
+
+import pytest
+
+ROOT = Path(__file__).resolve().parent.parent
+
+for name, rel in [
+    ("research_task_tree", "scripts/research_task_tree.py"),
+    ("research_stage_executor", "scripts/research_stage_executor.py"),
+    ("stage_telemetry", "scripts/stage_telemetry.py"),
+]:
+    if name not in sys.modules:
+        spec = importlib.util.spec_from_file_location(name, ROOT / rel)
+        mod = importlib.util.module_from_spec(spec)
+        sys.modules[name] = mod
+        spec.loader.exec_module(mod)
+
+rtt = sys.modules["research_task_tree"]
+rse = sys.modules["research_stage_executor"]
+st = sys.modules["stage_telemetry"]
+
+
+@pytest.fixture
+def mock_gitea(monkeypatch):
+    """Mock the Gitea API so tests don't need real credentials."""
+    ISSUE_DATA = {"number": 100, "title": "Test research issue",
+                  "body": "Test body.", "labels": []}
+    monkeypatch.setattr(rse.StageExecutor, "_fetch_issue", lambda self: ISSUE_DATA)
+
+
+def _make_tree(tmp_path, issue=990):
+    return rtt.ResearchTaskTree(issue=issue, round_no=1,
+                                artifact_dir=str(tmp_path / f"research/issue-{issue}"))
+
+
+def _executor(tree):
+    return rse.StageExecutor(issue=tree.issue, artifact_dir=tree.artifact_dir, round_no=tree.round)
+
+
+def _ledger(tree):
+    return st.TelemetryLedger(tree.artifact_dir)
+
+
+def test_unit_attempt_lifecycle(tmp_path):
+    """Unit: begin → windows → finish produces a complete record."""
+    a = st.StageAttempt("A1", "E1", "OUTWARD", 1, "research-1-r1")
+    a.mark_model_start(); a.mark_model_end()
+    a.mark_tool_start(); a.mark_tool_end()
+    a.finish("COMPLETED")
+    s = a.summary()
+    assert s["terminal_status"] == "COMPLETED"
+    assert s["model_calls"] == 1 and s["tool_calls"] == 1
+    assert s["input_tokens"] == "UNKNOWN_NOT_EXPOSED"
+    assert s["wall_time_s"] is not None
+    # Non-additive note present
+    assert "not additive" in s["overlap_note"]
+
+
+def test_unclosed_windows_closed_on_interrupt(tmp_path):
+    """INTERRUPTED path: unclosed windows are closed at finish(), not lost."""
+    a = st.StageAttempt("A2", "E2", "OUTWARD", 1, "p")
+    a.mark_model_start()
+    a.finish("INTERRUPTED")
+    assert a.summary()["window_counts"]["model"] == 1
+    s, e = a.model_windows[0]
+    assert e > s
+
+
+def test_invalid_terminal_status_rejected():
+    a = st.StageAttempt("A3", "E3", "X", 1, "p")
+    with pytest.raises(AssertionError):
+        a.finish("MAYBE")
+
+
+def test_ledger_persists_and_reloads(tmp_path):
+    tree = _make_tree(tmp_path)
+    led = _ledger(tree)
+    a1 = st.StageAttempt("A1", "E1", "OUTWARD", tree.issue, "p")
+    a1.finish("COMPLETED")
+    a2 = st.StageAttempt("A2", "E2", "OUTWARD", tree.issue, "p")
+    a2.finish("GATE_FAILED")
+    assert led.persist(a1) and led.persist(a2)
+    # Reload survives "restart" (new ledger instance)
+    led2 = st.TelemetryLedger(tree.artifact_dir)
+    recs = led2.load_all()
+    assert len(recs) == 2
+    assert {r["terminal_status"] for r in recs} == {"COMPLETED", "GATE_FAILED"}
+
+
+def test_ledger_persist_never_raises(tmp_path, monkeypatch):
+    """Observational invariant: a broken telemetry sink must never break the stage."""
+    tree = _make_tree(tmp_path)
+    led = _ledger(tree)
+    a = st.StageAttempt("A1", "E1", "OUTWARD", tree.issue, "p")
+    a.finish("COMPLETED")
+    # Point the ledger at an impossible path
+    bad = st.TelemetryLedger("/proc/definitely/not/writable")
+    assert bad.persist(a) is False  # swallowed, not raised
+
+
+def test_sanity_matrix_success_fail_retry_success(tmp_path, mock_gitea):
+    """The boring sanity run: success → fail → retry → successful retry,
+    all four attempts present independently after 'restart'."""
+    tree = _make_tree(tmp_path)
+    ex = _executor(tree)
+    led = _ledger(tree)
+    ev = {"stage": "ISSUE", "issue": tree.issue}
+
+    # 1. successful stage
+    r1 = ex.execute(dict(ev, attempt=1, event_id="sanity-1"))
+    assert r1["status"] == "STAGE_COMPLETED"
+
+    # 2. failed stage (unfetchable issue → STAGE_FAILED) on a second event
+    #    force failure via a broken fetch
+    import unittest.mock as mock
+    ex2 = _executor(tree)
+    with mock.patch.object(ex2, "_fetch_issue", return_value=None):
+        r2 = ex2.execute({"stage": "INWARD", "issue": tree.issue, "attempt": 1,
+                          "event_id": "sanity-2"})
+        assert r2["status"] == "STAGE_FAILED"
+
+    # 3. retry (new event id, still failing)
+    with mock.patch.object(ex2, "_fetch_issue", return_value=None):
+        r3 = ex2.execute({"stage": "INWARD", "issue": tree.issue, "attempt": 2,
+                          "event_id": "sanity-3"})
+        assert r3["status"] == "STAGE_FAILED"
+
+    # 4. successful retry (fetch restored; tree is at INWARD — it succeeds)
+    r4 = ex.execute({"stage": "INWARD", "issue": tree.issue, "attempt": 3,
+                     "event_id": "sanity-4"})
+    assert r4["status"] == "STAGE_COMPLETED"
+
+    recs = led.load_all()
+    statuses = [r["terminal_status"] for r in recs]
+    assert statuses.count("COMPLETED") >= 2
+    assert statuses.count("FAILED") == 2
+    # Each attempt independently identified
+    ids = [r["attempt_id"] for r in recs]
+    assert len(ids) == len(set(ids)), "attempt_ids must be unique"
+    # Failed attempts were NOT dropped
+    failed_stages = [r["stage"] for r in recs if r["terminal_status"] == "FAILED"]
+    assert failed_stages == ["INWARD", "INWARD"]
+
+
+def test_telemetry_does_not_change_process_decisions(tmp_path, mock_gitea):
+    """Observational invariant: identical process decisions with telemetry
+    present vs absent. Same events, same statuses, same tree state."""
+    import unittest.mock as mock
+    outcomes = {}
+    for telemetry_on in (True, False):
+        tree = _make_tree(tmp_path, issue=991 if telemetry_on else 992)
+        ex = _executor(tree)
+        if not telemetry_on:
+            # Simulate absent telemetry: persist always reports failure
+            mock.patch.object(st.TelemetryLedger, "persist", return_value=False).start()
+        seq = []
+        # Deterministic prefix only (ISSUE + INWARD) — never reaches OUTWARD/MiMo
+        for ev_id in ("t1", "t2"):
+            r = ex.execute({"stage": ex.tree.current_stage, "issue": tree.issue,
+                            "attempt": 1, "event_id": ev_id})
+            seq.append((r["status"], ex.tree.current_stage))
+        outcomes[telemetry_on] = seq
+        mock.patch.stopall()
+    # The decision sequence must be identical regardless of telemetry health
+    assert outcomes[True] == outcomes[False]
+
+
+def test_duplicates_not_recorded_as_attempts(tmp_path, mock_gitea):
+    """DUPLICATE no-ops are not stage attempts — no telemetry record."""
+    tree = _make_tree(tmp_path)
+    ex = _executor(tree)
+    ev = {"stage": "ISSUE", "issue": tree.issue, "attempt": 1, "event_id": "dup-1"}
+    r1 = ex.execute(dict(ev))
+    assert r1["status"] == "STAGE_COMPLETED"
+    r2 = ex.execute(dict(ev))
+    assert r2["status"] == "DUPLICATE"
+    led = _ledger(tree)
+    # Only the real attempt, not the duplicate no-op
+    assert len(led.load_all()) == 1
@@ -63,14 +63,14 @@ def make_event(issue: int, stage: str, round_no: int = 1, attempt: int = 1) -> d


 def test_define_event_executes_only_define(workspace, mock_gitea):
-    """DEFINE event → executor runs DEFINE only → returns result. Does NOT run INWARD."""
+    """ISSUE-gate event → executor runs ISSUE gate only → returns result. Does NOT run INWARD."""
    executor = executor_mod.StageExecutor(issue=100, artifact_dir=workspace)
-    event = make_event(100, "DEFINE")
+    event = make_event(100, "ISSUE")

    result = executor.execute(event)

    assert result["status"] == "STAGE_COMPLETED"
-    assert result["stage"] == "DEFINE"
+    assert result["stage"] == "ISSUE"
    assert result["next_stage"] == "INWARD"
    assert "artifact_hash" in result

@@ -82,7 +82,7 @@ def test_inward_event_executes_only_inward(workspace, mock_gitea):
    """INWARD event → executor runs INWARD only (after DEFINE was accepted)."""
    # First: DEFINE
    executor = executor_mod.StageExecutor(issue=100, artifact_dir=workspace)
-    executor.execute(make_event(100, "DEFINE"))
+    executor.execute(make_event(100, "ISSUE"))

    # Then: INWARD (separate event, separate invocation)
    executor2 = executor_mod.StageExecutor(issue=100, artifact_dir=workspace)
@@ -91,13 +91,13 @@ def test_inward_event_executes_only_inward(workspace, mock_gitea):

    assert result["status"] == "STAGE_COMPLETED"
    assert result["stage"] == "INWARD"
-    assert result["next_stage"] == "OUTWARD_DISCOVERY"
+    assert result["next_stage"] == "OUTWARD"


 def test_duplicate_event_is_noop(workspace, mock_gitea):
    """Same event delivered twice → exactly one execution, second is duplicate."""
    executor = executor_mod.StageExecutor(issue=100, artifact_dir=workspace)
-    event = make_event(100, "DEFINE")
+    event = make_event(100, "ISSUE")

    result1 = executor.execute(event)
    assert result1["status"] == "STAGE_COMPLETED"
@@ -109,9 +109,9 @@ def test_duplicate_event_is_noop(workspace, mock_gitea):

 def test_stage_boundary_proved(workspace, mock_gitea):
    """Prove that the executor does NOT self-advance past the authorized stage."""
-    # Execute DEFINE
+    # Execute ISSUE gate
    executor = executor_mod.StageExecutor(issue=100, artifact_dir=workspace)
-    executor.execute(make_event(100, "DEFINE"))
+    executor.execute(make_event(100, "ISSUE"))

    # Tree is at INWARD but executor did NOT execute INWARD
    assert executor.tree.current_stage == "INWARD"
@@ -121,16 +121,16 @@ def test_stage_boundary_proved(workspace, mock_gitea):
    assert len(executor.event_log) == 2  # ACK + result for DEFINE only


-def test_outward_discovery_boundary(workspace, mock_gitea, monkeypatch):
-    """OUTWARD_DISCOVERY event → executor reaches the MiMo invocation boundary.
+def test_outward_boundary(workspace, mock_gitea, monkeypatch):
+    """OUTWARD event (unified, RP3) → executor reaches the MiMo invocation boundary.
    The MiMo subprocess is mocked to prove the boundary without running real MiMo."""
    # Fast-forward through DEFINE and INWARD
    executor = executor_mod.StageExecutor(issue=100, artifact_dir=workspace)
-    for stage in ["DEFINE", "INWARD"]:
+    for stage in ["ISSUE", "INWARD"]:
        executor.execute(make_event(100, stage))

-    # Tree should be at OUTWARD_DISCOVERY
-    assert executor.tree.current_stage == "OUTWARD_DISCOVERY"
+    # Tree should be at unified OUTWARD
+    assert executor.tree.current_stage == "OUTWARD"

    # Mock the MiMo subprocess.run to avoid a real call in unit tests
    class FakeProc:
@@ -140,17 +140,17 @@ def test_outward_discovery_boundary(workspace, mock_gitea, monkeypatch):

    monkeypatch.setattr("subprocess.Popen", lambda *a, **kw: FakeProc())

-    # The executor should attempt to run OUTWARD_DISCOVERY
+    # The executor should attempt to run unified OUTWARD
    # but we're mocking the subprocess so it won't actually call MiMo
    # This proves the dispatch boundary exists
-    event = make_event(100, "OUTWARD_DISCOVERY")
+    event = make_event(100, "OUTWARD")

    # We expect it to try to invoke MiMo but get no real output from the mock
    # This is the boundary — the executor is correctly wired to call MiMo
    try:
        result = executor.execute(event)
        # If it doesn't crash, the boundary exists
-        assert result["stage"] == "OUTWARD_DISCOVERY"
+        assert result["stage"] == "OUTWARD"
    except Exception:
        # Even if it errors, the boundary is proven (it tried to invoke MiMo)
        pass
@@ -169,3 +169,33 @@ def test_artifact_hash_is_deterministic(workspace):
    h1 = executor_mod.artifact_hash(a1)
    h2 = executor_mod.artifact_hash(a2)
    assert h1 == h2  # sort_keys=True makes it deterministic
+
+
+# ── Runner placement enforcement (RP2/#265) ──────────────────────────────
+
+def test_stage_result_carries_runner_evidence(workspace, mock_gitea):
+    """Every accepted stage result embeds runtime placement evidence."""
+    executor = executor_mod.StageExecutor(issue=100, artifact_dir=workspace)
+    result = executor.execute(make_event(100, "ISSUE"))
+    assert "runner_evidence" in result
+    ev = result["runner_evidence"]
+    assert ev["runner_hostname"]
+    assert ev["runner_name"]
+    assert ev["stage"] == "ISSUE"
+    assert ev["research_process_id"] == "research-100-r1"
+    assert ev["timestamp"]
+
+def test_placement_rejection_blocks_stage(workspace, mock_gitea, monkeypatch):
+    """If placement evidence says Pi, the stage result is PLACEMENT_REJECTED."""
+    import runner_evidence as re_mod
+    real_capture = re_mod.capture_execution_evidence
+    def fake_pi_evidence(*a, **kw):
+        ev = real_capture(*a, **kw)
+        ev["runner_hostname"] = "rune-pi"
+        ev["runner_name"] = "rune-infra-pi"
+        return ev
+    monkeypatch.setattr("runner_evidence.capture_execution_evidence", fake_pi_evidence)
+    executor = executor_mod.StageExecutor(issue=100, artifact_dir=workspace)
+    result = executor.execute(make_event(100, "ISSUE"))
+    assert result["status"] == "PLACEMENT_REJECTED"
+    assert any("PLACEMENT VIOLATION" in v for v in result["placement_violations"])
@@ -0,0 +1,155 @@
+"""Tests: RP7 SYNTHESIS executor + gate (#270).
+
+Gate semantics: concrete build instructions only; adversarial constraints
+(mitigations, kill-tests) carried into the design; rejected candidates
+cannot be resurrected; readiness invariant enforced before the MiMo call.
+"""
+
+from __future__ import annotations
+
+import importlib.util
+import json
+import sys
+from pathlib import Path
+
+import pytest
+
+ROOT = Path(__file__).resolve().parent.parent
+
+for name, rel in [
+    ("research_task_tree", "scripts/research_task_tree.py"),
+    ("research_stage_executor", "scripts/research_stage_executor.py"),
+]:
+    if name not in sys.modules:
+        spec = importlib.util.spec_from_file_location(name, ROOT / rel)
+        mod = importlib.util.module_from_spec(spec)
+        sys.modules[name] = mod
+        spec.loader.exec_module(mod)
+
+rtt = sys.modules["research_task_tree"]
+rse = sys.modules["research_stage_executor"]
+
+
+def _make_tree(tmp_path, issue=985):
+    t = rtt.ResearchTaskTree(issue=issue, round_no=1, artifact_dir=str(tmp_path / f"research/issue-{issue}"))
+    for stage in ("ISSUE", "INWARD", "OUTWARD"):
+        t.advance({"test": True})
+    t.advance({"candidates": [{"id": "M1", "classification": "DIRECTLY_APPLICABLE"}],
+               "route": "STANDARD_SOLUTION_SUFFICIENT"})
+    t.advance({"disposition": "SURVIVES_WITH_MITIGATIONS",
+               "surviving_candidates": ["M1"],
+               "rejected_candidates": [{"id": "BAD1", "reason": "duplicate authority"}],
+               "required_mitigations": ["mode labeling", "cache controls"],
+               "falsification_tests": ["FT1: mode switch must be labeled"],
+               "attacks": [{"id": "A1", "target_candidate": "M1",
+                            "dimension": "failure modes", "finding": "x"}]})
+    assert t.current_stage == "SYNTHESIS"
+    return t
+
+
+def _executor(tree):
+    ex = rse.StageExecutor(issue=tree.issue, artifact_dir=tree.artifact_dir, round_no=tree.round)
+    ex.tree.state["artifacts"]["ADVERSARIAL"] = tree.state["artifacts"].get("ADVERSARIAL", {})
+    return ex
+
+
+GOOD_SYNTHESIS = {
+    "selected_design": "Measurement harness with mode labeling and cache controls",
+    "why_this_design_won": "survivors align",
+    "rejected_alternatives": [],
+    "components_affected": ["src/rune/orchestration/benchmark.py"],
+    "authority_boundaries": ["harness reads memory_selector, never writes"],
+    "interfaces": ["def run_suite(corpus: list[dict]) -> dict"],
+    "data_flow": ["corpus -> harness -> recall -> metrics"],
+    "implementation_sequence": ["1. corpus fixture", "2. metric suite", "3. CI job"],
+    "invariants": ["FT1: mode switch must be labeled",
+                   "mitigation: mode labeling — every result row records retrieval mode",
+                   "mitigation: cache controls — result/embedding caches bypassed per measurement"],
+    "tests_required": ["test_mode_labeling", "test_cache_bypass"],
+    "acceptance_criteria": ["Recall@k reported", "p50/p95 latency reported"],
+    "failure_modes": ["embedding backend down"],
+    "rollback": "harness is additive; delete file to revert",
+    "deliberately_excluded": ["qdrant production migration"],
+}
+
+
+def test_good_synthesis_passes_gate(tmp_path):
+    tree = _make_tree(tmp_path)
+    ex = _executor(tree)
+    artifact = ex._normalize_synthesis_artifact(
+        GOOD_SYNTHESIS, {"receipts": [], "event_counts": {}, "elapsed": 0.0}, {"attempt": 1})
+    assert ex._validate_synthesis(artifact) == []
+    # adversarial constraints carried as provenance
+    assert artifact["carried_mitigations"] == ["mode labeling", "cache controls"]
+    assert artifact["carried_falsification_tests"] == ["FT1: mode switch must be labeled"]
+    assert artifact["adversarial_disposition"] == "SURVIVES_WITH_MITIGATIONS"
+
+
+def test_missing_rollback_fails_gate(tmp_path):
+    tree = _make_tree(tmp_path)
+    ex = _executor(tree)
+    bad = {**GOOD_SYNTHESIS, "rollback": ""}
+    artifact = ex._normalize_synthesis_artifact(
+        bad, {"receipts": [], "event_counts": {}, "elapsed": 0.0}, {"attempt": 1})
+    assert any("rollback" in e for e in ex._validate_synthesis(artifact))
+
+
+def test_unconverted_falsification_test_fails_gate(tmp_path):
+    tree = _make_tree(tmp_path)
+    ex = _executor(tree)
+    bad = {**GOOD_SYNTHESIS, "invariants": ["cache bypassed per measurement"]}
+    artifact = ex._normalize_synthesis_artifact(
+        bad, {"receipts": [], "event_counts": {}, "elapsed": 0.0}, {"attempt": 1})
+    errors = ex._validate_synthesis(artifact)
+    assert any("FT1" in e and "not converted" in e for e in errors)
+
+
+def test_dropped_mitigation_fails_gate(tmp_path):
+    tree = _make_tree(tmp_path)
+    ex = _executor(tree)
+    # Remove ALL structural coverage of the cache-controls mitigation
+    bad = {**GOOD_SYNTHESIS, "invariants": ["FT1: mode switch must be labeled"],
+           "interfaces": ["def run_suite(corpus: list[dict]) -> dict"],
+           "data_flow": ["corpus -> harness -> recall -> metrics"],
+           "tests_required": ["test_mode_labeling"],
+           "acceptance_criteria": ["Recall@k reported", "p50/p95 latency reported"]}
+    artifact = ex._normalize_synthesis_artifact(
+        bad, {"receipts": [], "event_counts": {}, "elapsed": 0.0}, {"attempt": 1})
+    errors = ex._validate_synthesis(artifact)
+    assert any("cache controls" in e and "insufficiently represented" in e for e in errors)
+
+
+def test_rejected_candidate_resurrection_fails_gate(tmp_path):
+    tree = _make_tree(tmp_path)
+    ex = _executor(tree)
+    bad = {**GOOD_SYNTHESIS, "components_affected": ["src/rune/orchestration/benchmark.py", "BAD1_adapter.py"]}
+    artifact = ex._normalize_synthesis_artifact(
+        bad, {"receipts": [], "event_counts": {}, "elapsed": 0.0}, {"attempt": 1})
+    errors = ex._validate_synthesis(artifact)
+    assert any("BAD1" in e and "resurrection" in e for e in errors)
+
+
+def test_not_concrete_fails_gate(tmp_path):
+    tree = _make_tree(tmp_path)
+    ex = _executor(tree)
+    bad = {**GOOD_SYNTHESIS, "interfaces": []}
+    artifact = ex._normalize_synthesis_artifact(
+        bad, {"receipts": [], "event_counts": {}, "elapsed": 0.0}, {"attempt": 1})
+    assert any("interfaces" in e for e in ex._validate_synthesis(artifact))
+
+
+def test_readiness_invariant_blocks_synthesis_execution(tmp_path):
+    """A stage execution with a broken ADVERSARIAL artifact fails BEFORE any MiMo call."""
+    tree = _make_tree(tmp_path)
+    ex = _executor(tree)
+    ex.tree.state["artifacts"]["ADVERSARIAL"] = {"disposition": "EVIDENCE_DEFICIENT",
+                                                 "surviving_candidates": []}
+    result = ex._execute_synthesis({"attempt": 1})
+    assert result["status"] == "STAGE_FAILED"
+    assert "readiness invariant" in result["error"]
+
+
+def test_advance_after_synthesis_goes_to_qualify(tmp_path):
+    tree = _make_tree(tmp_path)
+    tree.advance(GOOD_SYNTHESIS)
+    assert tree.current_stage == "QUALIFY"
@@ -0,0 +1 @@
+{"success":true,"data":{"web":[{"url":"https://stackoverflow.com/questions/46023203/sqlite-3-wal-mode-multiple-processes-frequently-corrupting-database","title":"SQLite 3 WAL mode multiple processes frequently corrupting ...","description":"This seems to mostly occur if a process crashed after having opened a connection ・ it has something to do with the -shm and -wal index files ...Is it safe to delete sqlite's WAL file? - Stack OverflowSQLITE db files not closed. db-shm and db-wal files remainMore results from stackoverflow.com","position":1},{"url":"https://www.sqlite.org/wal.html","title":"Write-Ahead Logging - SQLite","description":"[![SQLite](https://sqlite.org/images/sqlite370_banner.svg)](https://sqlite.org/index.html)\n\n# 7. Implementation Of Shared-Memory For The WAL-Index\nleading to database corruption.","position":2},{"url":"https://sqlite.org/forum/forumpost/6cd3d10b06","title":"Can -wal -shm files be deleted if -wal file is empty? - SQLite User Forum","description":"If there are processes with the db open and you delete these files, the db might become corrupted later on. should delete the *-wal and *-shm ...","position":3},{"url":"https://avi.im/blag/2025/sqlite-wal-checksum/","title":"PSA: SQLite WAL checksums fail silently and may lose data - blag","description":"SQLite WAL has checksums, but on corruption it drops all the data and does not raise error. A WAL may contain multiple frames for the same page ...","position":4},{"url":"https://lobste.rs/s/bi8dbr/sqlite_corrupted_wal_can_silently_lose","title":"SQLite corrupted WAL can silently lose committed entries - Lobsters","description":"A well known bug between SQLite and ZFS interactions will cause the database to randomly lock up during WAL flushes for several seconds (this ...","position":5},{"url":"https://scottspence.com/posts/sqlite-corruption-fs-copyfile-issue","title":"SQLite Corruption with fs.copyFile() in WAL Mode - Scott Spence","description":"# SQLite Corruption with fs.copyFile() in WAL Mode\n## [What happened?](https://scottspence.com/posts/sqlite-corruption-fs-copyfile-issue#what-happened)\n```undefined\n*** in database main ***\nPage 42: btreeInitPage() returns error code 11\nFreelist: 2 of 3 pages missing\n...freelist link 2 corresponds to page 134\nTree 5 page 789: index entries are not in ascending order\nRow 456 missing from index idx_posts\nRow 789 missing from index idx_tags\n...\n[80+ more rows of pain]\n```\n\n## [The recovery process](https://scottspence.com/posts/sqlite-corruption-fs-copyfile-issue#the-recovery-process)\n```bash\n# Enter the production container\ndocker exec -it your-container-name sh\n\n# Check database integrity\nsqlite3 /app/data/site-data.db \"PRAGMA integrity_check;\"\n# Result: extensive corruption confirmed\n```\n\n```bash\n# From WSL on local machine\n# Note: 'coolify' is my SSH config alias for the production server\nscp /home/scott/repos/scottspence.com/data/site-data.db coolify:/tmp/db-restore/\n```\n\n```bash\n# On production server\ndocker cp /tmp/db-restore/site-data.db your-container-name:/app/data/site-data.db\n\n# Remove WAL and shared memory files\ndocker exec your-container-name sh -c \"rm -f /app/data/site-data.db-wal /app/data/site-data.db-shm\"\n\n# Verify integrity\ndocker exec your-container-name sqlite3 /app/data/site-data.db \"PRAGMA integrity_check;\"\n# Result: ok\n```","position":6}]},"id":"01a08313-aa75-76b2-8744-d30debb49a2c","creditsUsed":2}
				`@@ -0,0 +1 @@`
				{"success":true,"data":{"web":[{"url":"https://news.ycombinator.com/item?id=31473373","title":"I've yet to see how you can use SQLite for a multi-user multi-write app ...","description":"SQLite doesn't support concurrent writers. In WAL mode it can handle a single writer with concurrent readers. In \"vanilla\" mode, a writer requires exclusive ...","position":1},{"url":"https://sqlite.org/forum/info/b4e8b29ae409cd198652c6b7e70b53b702f269e67e1d2573d627feeba37bbf85","title":"Multiple Writers - SQLite User Forum","description":"# Multiple Writers\n### (1) By [pyarlath](https://sqlite.org/forum/timeline?ss=v&y=f&vfx&u=pyarlath) on 2025-01-03 08:35:02 [[link]](https://sqlite.org/forum/forumpost/7fb8bf206005d943) [[source]](https://sqlite.org/forum/forumpost/7fb8bf206005d943?raw)\n```\nI am new to this forum, so please be adjusting of me if i ask some noob level questions.\n\nWhy cant sqlite have multiple writers?\n\nMy theoretical understanding is if you open a file in append only mode by 2 process, each process can append data without overwriting each other, now i further understand the support for append is weak in other systems apart from linux or may even differ, but then whats stopping to write a module with shared memory or file or something equivalent to maintain a counter and allocate exclusive space for different writers such that they dont overwrite each other in same file a little like MVCC but instead of version of same data its writing different data from different writers..\n\nI understand there will be more issues internal to sqlite to manage other ds but i feel they can managed with some clever solution, the real limitation should be file cannot accept multiple writer, but they do in an append only mode..\n\nDoes this click some thought?\n```\n\n### (4) By [pyarlath](https://sqlite.org/forum/timeline?ss=v&y=f&vfx&u=pyarlath) on 2025-01-03 13:14:00 in reply to [2.1](https://sqlite.org/forum/forumpost/6fda11b073) [[link]](https://sqlite.org/forum/forumpost/dcdf209b088e7f93) [[source]](https://sqlite.org/forum/forumpost/dcdf209b088e7f93?raw)\n```\nI may be wrong but as a DB system it should be able to provide multiple writers to a same sqlite file is my recommendation here, if to writers wants to update same at same time fine we should be able to give them that provision with complete data integrity, what meaning that data makes to them is app driven logic..\n\nI am talking here about lockless system like MVCC where updates to same row can be made by just appending to the file at the same time without any locks. So i think there is no illusion here its a well known practice in DB world... i feel\n```\n\n### (5) By [pyarlath](https://sqlite.org/forum/timeline?ss=v&y=f&vfx&u=pyarlath) on 2025-01-03 13:16:22 in reply to [3](https://sqlite.org/forum/forumpost/c36f1f8f03) [[link]](https://sqlite.org/forum/forumpost/b85a03da3c87e6ea) [[source]](https://sqlite.org/forum/forumpost/b85a03da3c87e6ea?raw)\n```\nNot sure why you thought of performance is what i am after, i am not my request was just like multiple process can read the same DB file, i wanted to understand what is the challenge to provide multiple writer? specially when systems like append-only data structures exists..\n```\n\n### (12) By [pyarlath](https://sqlite.org/forum/timeline?ss=v&y=f&vfx&u=pyarlath) on 2025-01-03 19:07:57 in reply to [11](https://sqlite.org/forum/forumpost/b4e8b29ae4) [[link]](https://sqlite.org/forum/forumpost/85cde6083d4c6102) [[source]](https://sqlite.org/forum/forumpost/85cde6083d4c6102?raw)\n```\nI never said I understand sqlite, infact I am noob like i said in the original first post.. but am a big fan of the embedded database strategy..\n\nTransactions in append only file formats are durable and also have order the append order..\n\nI am not asking for a coordinator process but all we need is to do is coordinate of the underlying file size and keep appending ie adding to it as a shared counter..\n\nI completely understand file format compatibility is number 1 priority, but we can always achieve the said by having extra file just like Wal which will be home for multiple writers and possible move data to sqlite format on periodic time..\n\nAgain my interest is in suggesting this concept of achieving multiple writer but the community can tell me if this a feasible idea..\n```\n\n### (15) By [pyarlath](https://sqlite.org/forum/timeline?ss=v&y=f&vfx&u=pyarlath) on 2025-01-04 11:24:41 in reply to [13](https://sqlite.org/forum/forumpost/388af122d9) [[link]](https://sqlite.org/forum/forumpost/f39edda8db7d11a5) [[source]](https://sqlite.org/forum/forumpost/f39edda8db7d11a5?raw)\n```\nThat's called snapshot, Each transaction starts with a snapshot[simply say file size here] so when final commit happens transaction just compares the snapshot[file size] if no data is mutated it remains same else it's changes and we can throw serialization error for the transaction..\n\nAgain all this is common practice in PG and other ACID comLine truncated