probe: ssh push test

Promotion record: http://127.0.0.1:3000/conductor/rune/pulls/2473

.coveragerc

@@ -15,6 +15,9 @@
 # Canary files are omitted: src/rune/canary_*.py are standalone CI
 # verification scripts executed directly by the canary job, never imported by
 # the test suite — counting them would make the global floor a fiction.
+# ffi_query_memory_smoke.py is the same class: a standalone evidence script
+# driven directly (and by tests/test_ffi_query_memory_smoke.py when the cdylib
+# is built), never imported by the suite.
 
 [run]
 source = src/rune
@@ -22,6 +25,7 @@ omit =
     tests/*
     scripts/*
     src/rune/canary_*.py
+    src/rune/ffi_query_memory_smoke.py
 
 [report]
 fail_under = 29

.gitea/workflows/auto-backup.yml

@@ -8,7 +8,7 @@ on:
 
 jobs:
   backup:
-    runs-on: rune-infra-pi
+    runs-on: rune-ci-desktop
     steps:
       # actions/checkout v4.2.2, pinned to the audited upstream tag commit.
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683

.gitea/workflows/auto-label.yml

@@ -12,7 +12,7 @@ jobs:
   # a demand comment — filing is not complete until prioritized.
   priority-gate:
     if: github.event_name == 'issues' && github.event.action != 'labeled' && github.event.issue.state == 'open'
-    runs-on: rune-infra-pi
+    runs-on: rune-ci-desktop
     steps:
       - name: Enforce priority label
         uses: actions/github-script@v7
@@ -23,12 +23,13 @@ jobs:
             const labels = (issue.labels || []).map(l => l.name);
             const priorities = ['P0 — critical', 'P1 — high', 'P2 — medium', 'P3 — low'];
             const has = labels.filter(l => priorities.includes(l));
-            if (has.length >= 1) {
+            if (has.length === 1) {
               // Prioritized — clear the flag if it was set.
               if (labels.includes('unprioritized')) {
-                await github.rest.issues.removeLabel({
+                await github.request('DELETE /repos/{owner}/{repo}/issues/{issue_number}/labels/{id}', {
                   owner: context.repo.owner, repo: context.repo.repo,
-                  issue_number: issue.number, name: 'unprioritized',
+                  issue_number: issue.number,
+                  id: issue.labels.find(l => l.name === 'unprioritized').id,
                 }).catch(e => { if (e.status !== 404) throw e; });
               }
               return;
@@ -44,7 +45,7 @@ jobs:
             });
 
   auto-label:
-    runs-on: rune-infra-pi
+    runs-on: rune-ci-desktop
     steps:
       - name: Analyze and label
         uses: actions/github-script@v7
@@ -72,7 +73,8 @@ jobs:
             const managedLabels = new Set([
               'memory', 'governance', 'identity', 'growth',
               'perception', 'infrastructure', 'life', 'custodian',
-              'priority: high', 'bug', 'feature', 'research',
+              'bug', 'feature', 'research',
+              'P0 — critical', 'P1 — high', 'P2 — medium', 'P3 — low',
             ]);
 
             // Type label: DECLARED over GUESSED. The template spine
@@ -135,9 +137,31 @@ jobs:
               desiredLabels.add('custodian');
             }
 
-            // Priority labels
-            if (text.includes('urgent') || text.includes('critical') || text.includes('broken')) {
-              desiredLabels.add('priority: high');
+            // Priority labels (2026-10-05: PROGRAMMATIC P-ASSIGNMENT —
+            // the gate demanded P0-P3 labels but nothing assigned them;
+            // the dead 'priority: high' label is gone per the 2026-09-04
+            // normalization). Assignment from the TITLE prefix first
+            // ([P1]/P1:/priority=...), then keyword inference using the
+            // gate's own rule set (the scale lives in ONE place — the
+            // priority-gate job above).
+            const pMatch = title.match(/\bP([0-3])\b/);
+            const priorityLabelNames = ['P0 — critical', 'P1 — high', 'P2 — medium', 'P3 — low'];
+            if (pMatch) {
+              desiredLabels.add(priorityLabelNames[Number(pMatch[1])]);
+            } else if (text.includes('urgent') || text.includes('critical') ||
+                       text.includes('spine') || text.includes('blocks other work')) {
+              desiredLabels.add(priorityLabelNames[0]);   // P0 — critical
+            } else if (text.includes('broken') || text.includes('fix') ||
+                       text.includes('repair') || text.includes('defect') ||
+                       text.includes('real defect') || text.includes('money')) {
+              desiredLabels.add(priorityLabelNames[1]);   // P1 — high
+            } else if (text.includes('improve') || text.includes('consolidat') ||
+                       text.includes('refactor') || text.includes('kernel') ||
+                       text.includes('port')) {
+              desiredLabels.add(priorityLabelNames[2]);   // P2 — medium
+            } else if (text.includes('benchmark') || text.includes('measurement') ||
+                       text.includes('deferred')) {
+              desiredLabels.add(priorityLabelNames[3]);   // P3 — low
             }
 
             const issueNumber = context.payload.issue?.number || context.payload.pull_request?.number;
@@ -147,6 +171,7 @@ jobs:
               issue_number: issueNumber,
             });
             const currentLabels = new Set(current.data.map(label => label.name));
+            const currentLabelIds = new Map(current.data.map(label => [label.name, label.id]));
             const staleManaged = [...currentLabels].filter(
               label => managedLabels.has(label) && !desiredLabels.has(label)
             );
@@ -156,11 +181,14 @@ jobs:
 
             for (const name of staleManaged) {
               try {
-                await github.rest.issues.removeLabel({
+                // Gitea's DELETE /labels/{id} requires the numeric label ID.
+                // Octokit's GitHub-style removeLabel(name) returned 404 and
+                // left stale priority labels behind (#2467: P0 AND P2).
+                await github.request('DELETE /repos/{owner}/{repo}/issues/{issue_number}/labels/{id}', {
                   owner: context.repo.owner,
                   repo: context.repo.repo,
                   issue_number: issueNumber,
-                  name,
+                  id: currentLabelIds.get(name),
                 });
               } catch (error) {
                 if (error.status !== 404) {
@@ -178,5 +206,21 @@ jobs:
                 labels: missingDesired,
               });
             }
+            // The priority gate can flag a duplicate before this job
+            // reconciles it. Clear the flag only AFTER verifying exactly one
+            // surviving P-label against Gitea's current state.
+            const reconciled = await github.rest.issues.listLabelsOnIssue({
+              owner: context.repo.owner, repo: context.repo.repo,
+              issue_number: issueNumber,
+            });
+            const actual = reconciled.data;
+            const activePriority = actual.filter(l => priorityLabelNames.includes(l.name));
+            const flag = actual.find(l => l.name === 'unprioritized');
+            if (activePriority.length === 1 && flag) {
+              await github.request('DELETE /repos/{owner}/{repo}/issues/{issue_number}/labels/{id}', {
+                owner: context.repo.owner, repo: context.repo.repo,
+                issue_number: issueNumber, id: flag.id,
+              });
+            }
             console.log(`Removed managed labels: ${staleManaged.join(', ') || 'none'}`);
             console.log(`Added managed labels: ${missingDesired.join(', ') || 'none'}`);

.gitea/workflows/auto-update-gitea.yml

@@ -8,7 +8,7 @@ on:
 
 jobs:
   update-gitea:
-    runs-on: rune-infra-pi
+    runs-on: rune-ci-desktop
     steps:
       - name: Check current Gitea version
         id: current

.gitea/workflows/auto-version.yml

@@ -11,7 +11,7 @@ permissions: write-all
 
 jobs:
   release:
-    runs-on: rune-infra-pi
+    runs-on: rune-ci-desktop
     steps:
       - uses: actions/checkout@v4
         with:
@@ -131,8 +131,12 @@ jobs:
               "pyproject.toml": [(f'version = "{VERSION}"', f'version = "{NEW}"')],
           }
 
-          # Fetch current master content, apply replacements, VERIFY all five
-          # surfaces agree on NEW before committing anything (TUI gate).
+          # Fetch current master content, apply replacements, VERIFY all six
+          # surface patterns (five files + the TUI footer) agree on NEW before
+          # committing anything (TUI gate). The footer check was added after
+          # the 0.89.0 half-bump: a stale RELEASE_VERSION made both replace
+          # pairs no-op; the gate's RECOVER regex fixed the header only and
+          # the footer silently stayed 0.88.4, failing the banner test.
           edited = {}
           for path, pairs in surfaces.items():
               status, cur = api(f"/contents/{path}?ref=master")
@@ -151,6 +155,7 @@ jobs:
           checks = [
               ("src/rune/__init__.py", rf'__version__ = "({VER})"'),
               ("src/rune/rune_tui.py", rf"Version: v({VER})"),
+              ("src/rune/rune_tui.py", rf"Rune v({VER}) \|"),
               ("src/rune/canary_gitea_automation.py", rf"'__version__ = \"({VER})\"'"),
               ("pyproject.toml", rf'version = "({VER})"'),
               ("README.md", rf"v({VER})"),

.gitea/workflows/ci.yml

@@ -67,6 +67,20 @@ jobs:
   unit-tests:
     runs-on: rune-ci-desktop
     if: ${{ !startsWith(gitea.event.pull_request.head.ref, 'chore/auto-bump') }}
+    env:
+      RUNE_HOME: /tmp/rune-ci-${{ github.run_id }}
+      RUNE_MEMORY_DIR: /tmp/rune-ci-${{ github.run_id }}/memory
+      # The unit shim battery loads the cdylib (ep_loader); point it at the
+      # runner-owned cdylib FILE from the crate-build step below (the override
+      # expects a file path, not a directory).
+      EP_RUST_LIB: /tmp/rune-ci-target-${{ github.run_id }}/release/libevidence_provenance.so
+      SP_RUST_LIB: /tmp/rune-ci-target-${{ github.run_id }}/release/librune_spine.so
+      MS_RUST_LIB: /tmp/rune-ci-target-${{ github.run_id }}/release/libmemory_scoring.so
+      CS_RUST_LIB: /tmp/rune-ci-target-${{ github.run_id }}/release/libcapability_scoring.so
+      TC_RUST_LIB: /tmp/rune-ci-target-${{ github.run_id }}/release/libtoken_counting.so
+      SC_RUST_LIB: /tmp/rune-ci-target-${{ github.run_id }}/release/libscaffold_core.so
+      MEMS_RUST_LIB: /tmp/rune-ci-target-${{ github.run_id }}/release/libmemory_storage.so
+      MR_RUST_LIB: /tmp/rune-ci-target-${{ github.run_id }}/release/libmemory_retrieval.so
     steps:
       # actions/checkout v4.2.2, pinned to the audited upstream tag commit.
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
@@ -102,6 +116,25 @@ jobs:
           fi
           python3 scripts/umbrella_impact.py check \
             --base "$(git merge-base origin/master HEAD)" --head HEAD ${BODY_FILE:+--body-file "$BODY_FILE"}
+      - name: Build Rust evidence_provenance crate
+        run: |
+          # tests/test_evidence_provenance_shims.py drives the cdylib through
+          # the shim layer. Toolchain law (see the canary job for the full
+          # rationale): system rustc is broken on this host (LLVM_23.1
+          # version-node symbol gap); use the healthy rustup toolchain, PATH
+          # first so the rustup shim can't exec the broken system rustc.
+          # Runner-owned /tmp target dir (the repo's target/ is nick's).
+          export PATH="/home/nick/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/bin:$PATH"
+          export CARGO_TARGET_DIR="/tmp/rune-ci-target-${{ github.run_id }}"
+          mkdir -p "$CARGO_TARGET_DIR"
+          cargo build --release --manifest-path src/rust/evidence_provenance/Cargo.toml
+          cargo build --release --manifest-path src/rust/rune_spine/Cargo.toml
+          cargo build --release --manifest-path src/rust/memory_scoring/Cargo.toml
+          cargo build --release --manifest-path src/rust/capability_scoring/Cargo.toml
+          cargo build --release --manifest-path src/rust/token_counting/Cargo.toml
+          cargo build --release --manifest-path src/rust/scaffold_core/Cargo.toml
+          cargo build --release --manifest-path src/rust/memory_storage/Cargo.toml
+          cargo build --release --manifest-path src/rust/memory_retrieval/Cargo.toml
       - name: Test with coverage (global floor + changed-lines ratchet)
         run: |
           # #149 coverage ratchet — both floors live in .coveragerc; raise,
@@ -113,12 +146,45 @@ jobs:
           .test-venv/bin/coverage xml
           .test-venv/bin/diff-cover coverage.xml --compare-branch origin/master --fail-under=70 --diff-range-notation ..
 
+  go-surface:
+    runs-on: rune-ci-desktop
+    if: ${{ !startsWith(gitea.event.pull_request.head.ref, 'chore/auto-bump') }}
+    steps:
+      # actions/checkout v4.2.2, pinned to the audited upstream tag commit.
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
+      - name: Verify Go toolchain version pin
+        run: |
+          # H0 pin: the Go surface builds against the pacman toolchain; the
+          # pin file is the single source of truth so a distro upgrade that
+          # changes behavior fails loud here, not downstream in the canary.
+          WANT=$(cat go-version.txt)
+          GOT=$(go version | awk '{print $3}' | sed 's/^go//' | cut -d- -f1)
+          echo "pinned: $WANT | toolchain: $GOT"
+          [ "$GOT" = "$WANT" ] || { echo "::error::Go toolchain drift: want $WANT, got $GOT (update go-version.txt with the rollout)"; exit 1; }
+      - name: go vet + go test + go build
+        run: |
+          cd src/go/rune-entry
+          go vet ./...
+          go test ./...
+          go build -o /tmp/rune-entry-ci .
+
   canary:
     runs-on: rune-ci-desktop
     if: ${{ !startsWith(gitea.event.pull_request.head.ref, 'chore/auto-bump') }}
     env:
       RUNE_HOME: /tmp/rune-ci-${{ github.run_id }}
       RUNE_MEMORY_DIR: /tmp/rune-ci-${{ github.run_id }}/memory
+      # The build emits to a runner-owned /tmp target dir (the repo's target/
+      # is nick-owned); EP_RUST_LIB points ep_loader at the cdylib FILE there
+      # (the override expects a file path, not a directory).
+      EP_RUST_LIB: /tmp/rune-ci-target-${{ github.run_id }}/release/libevidence_provenance.so
+      SP_RUST_LIB: /tmp/rune-ci-target-${{ github.run_id }}/release/librune_spine.so
+      MS_RUST_LIB: /tmp/rune-ci-target-${{ github.run_id }}/release/libmemory_scoring.so
+      CS_RUST_LIB: /tmp/rune-ci-target-${{ github.run_id }}/release/libcapability_scoring.so
+      TC_RUST_LIB: /tmp/rune-ci-target-${{ github.run_id }}/release/libtoken_counting.so
+      SC_RUST_LIB: /tmp/rune-ci-target-${{ github.run_id }}/release/libscaffold_core.so
+      MEMS_RUST_LIB: /tmp/rune-ci-target-${{ github.run_id }}/release/libmemory_storage.so
+      MR_RUST_LIB: /tmp/rune-ci-target-${{ github.run_id }}/release/libmemory_retrieval.so
     steps:
       # actions/checkout v4.2.2, pinned to the audited upstream tag commit.
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
@@ -130,6 +196,34 @@ jobs:
           python3 -m venv .canary-venv
           .canary-venv/bin/pip install --disable-pip-version-check -r requirements-ci.txt
           .canary-venv/bin/pip install --disable-pip-version-check -e . --no-deps
+      - name: Build Rust evidence_provenance crate
+        run: |
+          # The canary pair + the unit shim battery drive the COMPILED surfaces
+          # (binary CLI parity, ep_loader FFI, ctypes cdylib loads).
+          #
+          # Toolchain law (troubleshooting history): the SYSTEM rustc is broken
+          # on this host — librustc_driver-<sha>.so (pacman rust 1:1.99.0-1)
+          # references std::string::_M_mutate under the LLVM_23.1 version node,
+          # but /usr/lib/libLLVM.so.23.1 does not define that narrow-char
+          # symbol under that node (it exports _M_create/_M_assign there, and
+          # only the WIDE-char _M_mutate) — every compile dies with `symbol
+          # lookup error` while `cargo --version` still prints. The rustup
+          # toolchain under /home/nick/.rustup is healthy and ships its own
+          # libLLVM, and /home/nick carries the x-ACL for this runner user.
+          # Point PATH at the toolchain bin dir (bypasses the rustup shim,
+          # which would exec the broken system rustc via RUSTUP_TOOLCHAIN).
+          # Target dir is runner-owned (/tmp): the repo's target/ is nick's.
+          export PATH="/home/nick/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/bin:$PATH"
+          export CARGO_TARGET_DIR="/tmp/rune-ci-target-${{ github.run_id }}"
+          mkdir -p "$CARGO_TARGET_DIR"
+          cargo build --release --manifest-path src/rust/evidence_provenance/Cargo.toml
+          cargo build --release --manifest-path src/rust/rune_spine/Cargo.toml
+          cargo build --release --manifest-path src/rust/memory_scoring/Cargo.toml
+          cargo build --release --manifest-path src/rust/capability_scoring/Cargo.toml
+          cargo build --release --manifest-path src/rust/token_counting/Cargo.toml
+          cargo build --release --manifest-path src/rust/scaffold_core/Cargo.toml
+          cargo build --release --manifest-path src/rust/memory_storage/Cargo.toml
+          cargo build --release --manifest-path src/rust/memory_retrieval/Cargo.toml
       - name: Run canary suite
         run: |
           FAILED=0
@@ -156,6 +250,18 @@ jobs:
             src/rune/canary_p1_06.py \
             src/rune/canary_p1_01.py \
             src/rune/canary_query_memory.py \
+            src/rune/canary_rune_entry.py \
+            src/rune/canary_spine_meta.py \
+            src/rune/canary_audit_ledger.py \
+            src/rust/rune_spine/canary_spine_rust.py \
+            src/rune/canary_rune_serve.py \
+            src/rune/canary_tui_transport.py \
+            src/rust/memory_scoring/canary_memory_scoring.py \
+            src/rust/capability_scoring/canary_capability_scoring.py \
+            src/rust/token_counting/canary_token_counting.py \
+            src/rust/scaffold_core/canary_scaffold_core.py \
+            src/rust/memory_storage/canary_memory_storage.py \
+            src/rust/memory_retrieval/canary_memory_retrieval.py \
             src/rune/canary_unbounded.py \
             src/rune/canary_full_system.py \
             src/rune/canary_native.py; do

.gitea/workflows/maintenance.yml

@@ -8,7 +8,7 @@ on:
 
 jobs:
   lint-and-format:
-    runs-on: rune-infra-pi
+    runs-on: rune-ci-desktop
     steps:
       - uses: actions/checkout@v4
       - name: Lint Python files
@@ -18,7 +18,7 @@ jobs:
           ruff format shared/ src/ || true
 
   canary-suite:
-    runs-on: rune-infra-pi
+    runs-on: rune-ci-desktop
     steps:
       - uses: actions/checkout@v4
       - name: Run all canaries
@@ -37,7 +37,7 @@ jobs:
           exit $FAILED
 
   best-practices:
-    runs-on: rune-infra-pi
+    runs-on: rune-ci-desktop
     steps:
       - uses: actions/checkout@v4
       - name: Check best practices
@@ -72,7 +72,7 @@ jobs:
           grep -rn "TODO\|FIXME\|HACK\|XXX" shared/ src/ --include="*.py" | head -10 || echo "  Clean"
 
   documentation-check:
-    runs-on: rune-infra-pi
+    runs-on: rune-ci-desktop
     steps:
       - uses: actions/checkout@v4
       - name: Check documentation coverage
@@ -113,7 +113,7 @@ jobs:
   # push-triggered safety net in auto-version.yml. Detects master/tag drift
   # and files a deduped issue — it never auto-releases without the PR flow.
   release-drift-reconciliation:
-    runs-on: rune-infra-pi
+    runs-on: rune-ci-desktop
     steps:
       - uses: actions/checkout@v4
         with:

.gitignore

@@ -14,3 +14,4 @@ state/
 # Runtime artifacts (cwd-local event journal + capability index)
 index/
 journal/
+src/rust/*/target/

PROBE_FILE.md

@@ -0,0 +1 @@
+probe 1791291272

README.md

@@ -1,6 +1,6 @@
 # Rune
 
-**Current release: v0.89.0**
+**Current release: v0.99.6**
 
 **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.**
 

config/umbrellas.json

@@ -4,13 +4,30 @@
  "generated_at": "2026-09-16T18:23:38Z",
  "umbrellas": {
   "capability": {
+   "canaries": [
+    "canary_native",
+    "canary_p0_05",
+    "canary_p1_01",
+    "canary_rune_entry",
+    "canary_rune_serve"
+   ],
+   "configs": [],
+   "depends_on": [
+    "memory"
+   ],
    "description": "Tool selection and execution authority",
+   "go_surfaces": [
+    "rune-entry"
+   ],
+   "mirrors": [],
    "modules": [
     "adaptive_router",
     "builder_bridge",
     "builder_bridge_cli",
     "capability_broker",
     "connection_pool",
+    "core_server",
+    "cs_loader",
     "evidence_probe",
     "forge",
     "forge_client",
@@ -25,21 +42,30 @@
     "tool_executor",
     "tool_protocol"
    ],
-   "depends_on": [
-    "memory"
-   ],
-   "mirrors": [],
-   "canaries": [
-    "canary_native",
-    "canary_p0_05",
-    "canary_p1_01"
+   "rust_crates": [
+    "capability_scoring"
    ]
   },
   "governance": {
+   "canaries": [
+    "canary_full_system",
+    "canary_schema_migration",
+    "canary_audit_ledger",
+    "canary_spine_meta"
+   ],
+   "configs": [
+    ".coveragerc",
+    "go-version.txt",
+    "lint-baseline.json",
+    "pyright-baseline.json"
+   ],
+   "depends_on": [],
    "description": "Quality control, drift detection, promotion, audit",
+   "mirrors": [],
    "modules": [
     "audit_ledger",
     "build_pipeline_policy",
+    "cc_loader",
     "claim_audit",
     "contracts",
     "curator",
@@ -47,17 +73,24 @@
     "drift_ledger",
     "drift_observability",
     "failure_auto_filer",
-    "programme_gates"
+    "programme_gates",
+    "sc_loader"
    ],
-   "depends_on": [],
-   "mirrors": [],
-   "canaries": [
-    "canary_full_system",
-    "canary_schema_migration"
+   "rust_crates": [
+    "evidence_provenance",
+    "scaffold_core"
    ]
   },
   "growth": {
+   "canaries": [
+    "canary_full_system"
+   ],
+   "depends_on": [
+    "governance",
+    "memory"
+   ],
    "description": "Learning and improvement",
+   "mirrors": [],
    "modules": [
     "autonomy_loop",
     "cognitive_loop",
@@ -68,18 +101,17 @@
     "growth_simulator",
     "self_improve",
     "subconscious_pass"
-   ],
-   "depends_on": [
-    "governance",
-    "memory"
-   ],
-   "mirrors": [],
-   "canaries": [
-    "canary_full_system"
    ]
   },
   "identity": {
+   "canaries": [
+    "canary_full_system"
+   ],
+   "depends_on": [
+    "governance"
+   ],
    "description": "Who the agent is \u2014 persona, voice, anchors",
+   "mirrors": [],
    "modules": [
     "behavior",
     "identity_anchors",
@@ -90,17 +122,19 @@
     "voice_injector",
     "voice_sync",
     "voicebox"
-   ],
-   "depends_on": [
-    "governance"
-   ],
-   "mirrors": [],
-   "canaries": [
-    "canary_full_system"
    ]
   },
   "inference": {
+   "canaries": [
+    "canary_p1_02",
+    "canary_p1_06",
+    "canary_resource_authority"
+   ],
+   "depends_on": [
+    "capability"
+   ],
    "description": "Model routing and outbound requests",
+   "mirrors": [],
    "modules": [
     "inference_trace",
     "model_connect",
@@ -111,31 +145,39 @@
     "provider_registry",
     "response_adapter",
     "standardized_providers",
+    "tc_loader",
     "token_optimizer"
    ],
-   "depends_on": [
-    "capability"
-   ],
-   "mirrors": [],
-   "canaries": [
-    "canary_p1_02",
-    "canary_p1_06",
-    "canary_resource_authority"
+   "rust_crates": [
+    "token_counting"
    ]
   },
   "memory": {
+   "canaries": [
+    "canary_full_system",
+    "canary_memory_synthesis",
+    "canary_query_memory"
+   ],
+   "depends_on": [
+    "governance"
+   ],
    "description": "Storing, retrieving, and managing knowledge",
+   "mirrors": [],
    "modules": [
     "abstraction",
     "cache",
     "drift_cache",
     "drift_compression",
+    "ffi_query_memory_smoke",
     "graph_memory",
     "graph_shard_bridge",
     "memory_consolidation",
     "memory_env",
     "memory_selector",
     "memory_store",
+    "mems_loader",
+    "mr_loader",
+    "ms_loader",
     "query_memory",
     "recall_router",
     "retrieval_benchmark",
@@ -143,18 +185,33 @@
     "tier_manager",
     "warm_neuron_store"
    ],
-   "depends_on": [
-    "governance"
-   ],
-   "mirrors": [],
-   "canaries": [
-    "canary_full_system",
-    "canary_memory_synthesis",
-    "canary_query_memory"
+   "rust_crates": [
+    "memory_retrieval",
+    "memory_scoring",
+    "memory_storage",
+    "query_memory"
    ]
   },
   "orchestration": {
+   "canaries": [
+    "canary_cognitive_strata",
+    "canary_conversation_state",
+    "canary_gitea_pipeline",
+    "canary_orchestration_foundation",
+    "canary_p1_07",
+    "canary_surface_parity",
+    "canary_tui_drift",
+    "canary_tui_transport"
+   ],
+   "depends_on": [
+    "capability",
+    "growth",
+    "identity",
+    "inference",
+    "perception"
+   ],
    "description": "Task lifecycle, operator, TUI presentation",
+   "mirrors": [],
    "modules": [
     "auto_detect",
     "build_mode",
@@ -189,32 +246,24 @@
     "task_persist",
     "tiered_executor",
     "time_awareness",
+    "tui_transport",
     "tui_validator",
     "umbrella_update",
     "verification_layer",
     "warm_router",
     "work_manager"
-   ],
-   "depends_on": [
-    "capability",
-    "growth",
-    "identity",
-    "inference",
-    "perception"
-   ],
-   "mirrors": [],
-   "canaries": [
-    "canary_cognitive_strata",
-    "canary_conversation_state",
-    "canary_gitea_pipeline",
-    "canary_orchestration_foundation",
-    "canary_p1_07",
-    "canary_surface_parity",
-    "canary_tui_drift"
    ]
   },
   "perception": {
+   "canaries": [
+    "canary_context_broker",
+    "canary_full_system"
+   ],
+   "depends_on": [
+    "memory"
+   ],
    "description": "Input processing and context assembly",
+   "mirrors": [],
    "modules": [
     "attention_capsule",
     "auto_context",
@@ -249,6 +298,8 @@
     "salience_gate",
     "scaffold",
     "spine",
+    "spine_language",
+    "spine_loader",
     "stage_guards",
     "structural_migration",
     "structural_model",
@@ -260,13 +311,8 @@
     "wait_guard_corpus",
     "witness"
    ],
-   "depends_on": [
-    "memory"
-   ],
-   "mirrors": [],
-   "canaries": [
-    "canary_context_broker",
-    "canary_full_system"
+   "rust_crates": [
+    "rune_spine"
    ]
   }
  }

docs/SCAFFOLDING.md

@@ -272,4 +272,19 @@ observations, fresh resume.
 
 Release-note generator: LIVE-PROVEN (real Gitea, 10 releases). Backfill:
 0.66.35→0.66.44 carrying historical-backfill provenance. Pre-0.66.35
-history: skipped (weak evidence — honest limitation).
+history: skipped (weak evidence — honest limitation).
+
+## Contract discovery → spine (2026-10-05, #2465 CI correction)
+
+The closed construction contract is the authority for discoveries. Spine
+rebuild reads its observed entities and candidate corrections; it does not
+claim a correction has been built. Qualified IDs such as
+`rust-crate:cognition_core` keep their declared kind. Bare file paths,
+test suites and other unqualified references become
+`construction-surface:<reference>`, never `module`. An observed
+surface may be PRESENT; a candidate stays DECLARED until independently
+observed. Existing bad records are migrated with their evidence and edge
+references intact. This matters: the first write-back mapped bare paths to
+modules, made 22 false module records and crashed CI on the next rebuild.
+The per-contract quick-reference markdown is generated from the scaffold
+store at close; it is a view, not another authority.

docs/tui-registry.md

@@ -10,6 +10,7 @@ new surface._
 | `rune_tui.py` | The main Textual application — chat pane, work pane, status bar (version label + refresh), footer, dialogs | The known giant (file-size debt tracked in henxels); composition root for all UI |
 | `tui_validator.py` | Import-allowlist validation for TUI code | Drift defect tracked in #139 (allowlist vs `__future__`/relative imports) |
 | `tui_backlog.py` | Not a surface — the durable TUI Upgrade Backlog ledger (outstanding projection/control work per backend feature) | SCAFFOLD-TRANCHE-007; ledger only, never structural authority |
+| `tui_transport.py` | Not a surface — the transport seam for the TUI's operator calls (in-process default / /v1 wire opt-in) | H4 slice 1 (contract BUILDER-2026-10-04T10:32:00Z-cli); RUNE_TUI_TRANSPORT selects; coverage: canary_tui_transport.py |
 
 ## Adding a TUI surface
 

go-version.txt

@@ -0,0 +1 @@
+1.27.1

henxels.yaml

@@ -1,7 +1,31 @@
 settings:
   warn_about_similar_files:
     above: 0.85
-    ignore: ["docs/review-lessons.yaml", "docs/v1/**", "docs/wiki/**", "store/spine/**"]
+    ignore: ["docs/review-lessons.yaml", "docs/v1/**", "docs/wiki/**", "store/spine/**",
+             # shared/ is the DEPLOYED-VINTAGE mirror tree (strangler era):
+             # every src/rune <-> shared similarity here is intentional
+             # (the shim delegates to the crate; the mirror is the deployed
+             # vintage it strangles). Registering the deliberate pairs.
+             "shared/**",
+             "src/rune/drift_core.py", "src/rune/drift_compression.py",
+             "src/rune/drift_observability.py", "src/rune/shard_manager.py",
+             "src/rune/subconscious_pass.py",
+             # deliberate mirror pairs outside the strangler set:
+             # issue templates are mirrored into shared/issue_templates;
+             # completion_file.py is the bridge/daemon mirror of scripts/;
+             # interop/rebase-proof is a committed proof fixture.
+             ".gitea/ISSUE_TEMPLATE/**", "shared/issue_templates/**",
+             "bridge/daemon/completion_file.py", "scripts/completion_file.py",
+             "interop/rebase-proof/**",
+             # per-crate copies by zero-dep design: each crate is
+             # self-contained (no shared crate dependency), so the pyjson
+             # JSON module is copied verbatim per crate and the tiny
+             # zero-dep lockfiles are near-identical by construction.
+             "src/rust/*/Cargo.lock", "src/rust/*/src/pyjson.rs",
+             "src/rust/query_memory/src/json_min.rs",
+             # store/scaffold is data (proof fixtures, gate objects),
+             # same class as the already-ignored store/spine.
+             "store/scaffold/**"]
 
 henxels:
   - henxel: "Canaries live at the repo's canary slot and are registered in CI"

lint-baseline.json

@@ -1,4 +1,4 @@
 {
-  "BLE001": 347,
+  "BLE001": 345,
   "S110": 75
 }

memory/journal/events.jsonl

@@ -38309,3 +38309,602 @@
 {"actor_id": "", "authorization": "", "device_id": "", "event_id": "evt_27044643acf3", "event_type": "task.failed", "parent_id": null, "partition_key": "rune_operator", "payload_hash": "sha256:f841b27cd0a3f14a7fa1be8e87d46c0b65a23b0a75d6324d2b14be717476459d", "schema_version": 1, "timestamp": "2026-09-29T02:59:13.857300+00:00"}
 {"actor_id": "", "authorization": "", "device_id": "", "event_id": "evt_edb2d4f65dc2", "event_type": "task.outcome", "parent_id": null, "partition_key": "rune_operator", "payload_hash": "sha256:478b26b3101f2da813ba48b2c1c1afc463c1c0d5299904de9faf947b8854afbd", "schema_version": 1, "timestamp": "2026-09-29T02:59:13.923428+00:00"}
 {"actor_id": "", "authorization": "", "device_id": "", "event_id": "evt_fe5b4b43370a", "event_type": "task.failed", "parent_id": null, "partition_key": "rune_operator", "payload_hash": "sha256:c5855d77df4b36cebe2c0c18f7bea277d0f779b73b84f357375563349f3e984c", "schema_version": 1, "timestamp": "2026-09-29T02:59:13.934399+00:00"}
+{"actor_id": "", "authorization": "", "device_id": "", "event_id": "evt_b0e19f4acdf9", "event_type": "storage.degraded", "parent_id": null, "partition_key": "subsystem_health", "payload_hash": "sha256:dc4a0ef045512b494194a21ba9206ec66e21ae710f7c2caa29f194c48fb142c0", "schema_version": 1, "timestamp": "2026-10-05T05:21:25.789100+00:00"}
+{"actor_id": "", "authorization": "", "device_id": "", "event_id": "evt_016be0c4b465", "event_type": "capability.failed", "parent_id": null, "partition_key": "subsystem_health", "payload_hash": "sha256:5905ca1fb3b9d207b290447e7844c186b1a34e36d7a7e4102159cee3f8ae136b", "schema_version": 1, "timestamp": "2026-10-05T05:21:25.806792+00:00"}
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plans/2026-10-02-phase-g-query-memory-supersession.md

@@ -0,0 +1,48 @@
+# Phase G slice 1 — retrieval-index authority supersession ledger
+
+**Date:** 2026-10-02 · **Branch:** `phase-g-strangler-retrieval-index` · **Unit issue:** conductor/rune#2448
+
+## What was superseded
+
+The pure-Python `query_memory` implementation (formerly `src/rune/query_memory.py`,
+deployed at `~/.config/opencode/scripts/query_memory.py`) is RETIRED as a production
+implementation. Production authority now rests with:
+
+1. **Implementation:** Rust crate `src/rust/query_memory/` (lib.rs core + cdylib, ten
+   `extern "C"` FFI symbols, zero external crates).
+2. **Production service surface:** `shared/query_memory.py` — a ctypes-backed shim
+   (179 lines) over `qm_loader.py`, byte-deployed to `~/.config/opencode/scripts/query_memory.py`,
+   serving the FULL prior Python class API including the `self.history` snapshot.
+
+## Strangler doctrine (master doc lines 685–770) — step discharge
+
+| Step | Requirement | Evidence |
+|------|-------------|----------|
+| 1–4 | candidate built, contract frozen, parity proven | commits `9b76585`+`54d2db9`; `/tmp/phaseG_retrieval_index_contract.md` frozen; parity harness ALL GREEN |
+| 5 | qualification | `/tmp/phaseG_qual_bench.out` (Rust CLI ~45× faster end-to-end); canaries both sides |
+| 6 | canaries conformance | Python canary 12/12; Rust canary 27/27 |
+| 7 | shadow comparison vs live store | `/tmp/phaseG_shadow.py` 46/46 exact-equal vs 77-record production store |
+| 8 | authority switch + observed consumer evidence | commit `6f44a87`; both consumers verified live — `memory_store.py` (lines 820–821, live 76-record store, nested stats shape) + `growth_simulator.py` (record_query through Rust core); #2448 comment id 33795 |
+| 9 | runtime evidence post-switch | post-switch verification wall ALL GREEN: Python canary 12/12, FFI smoke 41/41, Rust canary 27/27, parity harness ALL GREEN |
+| 10 | old production path unreachable | ALL import paths (`import query_memory`) now resolve to the deployed shim; `shared/graph_shard_bridge.py` tolerant import serves the shim; the orphan `src/rune/query_memory.py` had ZERO importers (verified by sweep incl. path-string references) |
+| 11 | old implementation removed or reference-only | `src/rune/query_memory.py` DELETED (this commit); the only stale reference (`scripts/structural_coverage_audit.py` registry mapping shared/ as a mirror of src/rune) corrected — query_memory removed from `SRC_A`/`SHARED_D`, added to `SHARED_B` (canonical, ops-harness owned) |
+| 12 | supersession ledger | THIS FILE |
+
+Deletion discipline (language-governance rule ⑥) satisfied: old code removed only after
+the new implementation was PROVEN — wall green, shadow 46/46, both production consumers
+observed live on the Rust core before deletion.
+
+## Consumer map at supersession
+
+- `~/.config/opencode/scripts/memory_store.py` — in-process, `adaptive_exploration_rate` (line 820).
+- `~/.config/opencode/scripts/growth_simulator.py` — in-process, `record_query`.
+- `shared/graph_shard_bridge.py` — tolerant import (try/except), follows the switch.
+- `src/rune/tool_executor.py` — NOT a consumer (nominal grep hit only; goes through `memory_store.cached_recall`).
+
+## Verification commands (reproducible)
+
+- `/home/nick/.venvs/memory/bin/python3 src/rune/canary_query_memory.py` → 12/12
+- `/home/nick/.venvs/memory/bin/python3 src/rust/query_memory/canary_rust.py` → 27/27
+- `/home/nick/.venvs/memory/bin/python3 src/rune/ffi_query_memory_smoke.py` → 41/41
+- `/home/nick/.venvs/memory/bin/python3 /tmp/phaseG_parity.py` → ALL GREEN
+- `/home/nick/.venvs/memory/bin/python3 scripts/structural_coverage_audit.py` → exit 0, coverage 100%

plans/2026-10-03-phase-g-evidence-provenance-contract.md

@@ -0,0 +1,66 @@
+# Phase G Slice 2 — FROZEN CONTRACT: evidence-provenance (T7.3)
+
+Frozen: 2026-10-03, session ses_ffe5f08a7892affeGzZWhhm0wR. Branch `phase-g-strangler-evidence-provenance` (cut from slice-1 head `2ac2d0a`). Gitea issue #2449. Nothing below may change without a recorded amendment in this file.
+
+## 1. Scope (observed, not inferred)
+
+Six modules in `src/rune/`, 1796 lines total, one test file each as marked:
+
+| Module | Lines | Surface (grep-verified 2026-10-03) |
+|---|---|---|
+| `audit_ledger.py` | 231 | `_compute_hash(prev_hash, entry)`, `append_entry(entry_type, entry_id, details)`, `verify_chain() -> {valid, entries, reason}`, `get_entries(limit=50)`, `log_promotion(entry_id, old_status, new_status, wash_count, reason)`, `log_gate_result(entry_id, verdict, critics)`, `log_drift_alert(alert_type, message, severity)`, `main()` |
+| `behavior.py` | 411 | `connect()`, `add_correction(original, corrected, scope_tags=None, domain="", pattern="")`, `add_habit(trigger, action, name="", context_tags=None, min_activations=3)`, `match_context(context, match_type=None)`, `reinforce(item_id, outcome, item_type="habit")`, `list_items(item_type="all", limit=20)`, `behavior_stats()`, `main()`, `PLUGIN` dict |
+| `behaviour_ledger.py` | 251 | 9 state constants (UNVALIDATED…NOT_APPLICABLE) + `STATES` + `CONFIRMED_STATES` tuples, `BehaviourLedger` class |
+| `claim_audit.py` | 430 | `PATTERNS` list, `EVIDENCE_TAG` regex, `LEDGER_MARKERS`, `reframe(text)`, `scan(text)`, `verify(claim)`, `degrade(claim, verdict)`, `journal(entry)`, `report()`, `audit(draft)`, `handle_hook(event, data=None)`, `main()`, `PLUGIN` |
+| `evidence_probe.py` | 214 | `PROBE_STATUSES`, `PROBE_FIELDS`, `MAX_PROBES_PER_TASK=2`, `ProbeBudgetExceeded`, `ProbeResult`, `build_probe_prompt(question, artifact_path)`, `validate_probe(artifact)`, `count_probes(artifact_dir)`, `check_budget(artifact_dir)`, `record_probe(result, artifact_dir)`, `run_probe(question, artifact_dir, runner=None, model="UNKNOWN")` |
+| `verification_layer.py` | 259 | `VerificationResult`, seven `verify_*` functions (exit_code, unit_test, schema, file_exists, file_changed, tool_receipt, constraint_check), `verify(result, verifier_type)`, `handle_hook`, `PLUGIN` |
+
+Plus `shared/audit_ledger.py` (210 ln) — OLDER vintage of audit_ledger.
+
+## 2. Authority decisions (per module)
+
+- **src/rune/ is the authority vintage for all six modules** — hardened newer code (memory_env-pathed storage, defensive handling). The deployed `~/.config/opencode/scripts/{audit_ledger,behavior,claim_audit}.py` copies are OLDER vintages (hardcoded expanduser paths). The authority switch is a VINTAGE UPGRADE plus a language swap — not a mirror replacement.
+- `shared/audit_ledger.py` is superseded alongside the deployed copy (same older vintage, same defects).
+
+## 3. Live-data contract (the linchpin — observed)
+
+- **Live ledger:** `/home/nick/.config/opencode/memory/promotion_ledger.jsonl` (21 entries). `verify_chain()` under the deployed module's own defaults returns `{'valid': True, 'entries': 21, 'reason': 'chain intact'}` — OBSERVED 2026-10-03.
+- **Live signing key: `rune-drift-integrity-2024`** (the deployed/shared default). The src/rune default `rune-governed-adaptation-2024` FAILS the live chain — it is a latent break, recorded as a defect this slice fixes.
+- **Hash scheme (both vintages identical):** `HMAC-SHA256(key, (prev_hash + json.dumps(entry_without_hash, sort_keys=True)).encode()).hexdigest()`; genesis prev_hash = `"genesis"`; entry lines written with `json.dumps(entry)` in insertion order (type, entry_id, details, timestamp, prev_hash, hash); timestamp = `datetime.now(timezone.utc).isoformat()`.
+- **Key rule for the Rust candidate:** read `AUDIT_LEDGER_KEY` env; DEFAULT = `rune-drift-integrity-2024` (the key that verifies the live chain). Never default to the governed key — it verifies nothing that exists.
+- **Live `behavior.db`:** SQLite at memory_env memory dir, touched Sep 24 — must remain readable by the Rust candidate's storage layer.
+
+## 4. Rust candidate design
+
+Crate `/mnt/workdrive/rune/src/rust/evidence_provenance/` following the proven slice-1 shape: zero-dep core in `lib.rs`, `cdylib` FFI exports, hand-rolled JSON serialization where byte-parity demands it. **Port order within the slice** (dependency + risk order):
+
+1. **audit_ledger** — linchpin: live data, external consumers, key contract.
+2. **verification_layer** — pure logic, no storage, one test file; fastest port.
+3. **evidence_probe** — file-based budget/records; `rune_operator.py:581` consumer.
+4. **behaviour_ledger** — state machine, src/rune-only.
+5. **behavior** — SQLite habits; live DB; deployed vintage upgrade + `rune_tui.py` consumer.
+6. **claim_audit** — heaviest (warm-neuron store + graph DB + regex engine); last.
+
+Python-side ctypes loaders (`*_loader.py`) + deployed shims per slice-1 pattern, so every consumer keeps its import surface unchanged.
+
+## 5. Parity + qualification criteria
+
+- **Byte-parity:** Rust `verify_chain` output byte-identical to Python's on the live ledger AND on a mutation battery (tampered entry, broken chain, invalid JSON, empty ledger). Parity harness both sides, slice-1 pattern.
+- **Canaries:** Python-side canary module per ported module + Rust canary; both green before any switch.
+- **Shadow:** shadow-compare Rust vs Python on live-shaped data before authority switch.
+- **Performance:** like-for-like benchmark on the real consumption shape; no regression (Nick's law: combination does not decrease speed).
+
+## 6. Consumers + adoption plan (Nick's directive: adoption during the refactor)
+
+| Consumer | Imports | Switch |
+|---|---|---|
+| `~/.config/opencode/scripts/curator.py` | audit_ledger | at audit_ledger switch |
+| `canary_tui_drift.py`, `canary_full_system.py` | audit_ledger | at audit_ledger switch |
+| `rune_tui.py` (L62, L83) | claim_audit, behavior | at each module's switch |
+| `rune_operator.py:581` | evidence_probe (relative) | at evidence_probe switch |
+
+Deployed copies become ctypes shims at each module's authority switch (vintage upgrade included — the shim serves the src/rune contract, not the old vintage's). Old deployed Python deletions follow language-governance ⑥: only after the new is proven.
+
+## 7. Exit criteria
+
+All twelve doctrine steps discharged per module-port with observed evidence on #2449; coverage-audit registry remapped; supersession ledger written; audit regression gate green.

plans/2026-10-03-phase-g-evidence-provenance-supersession.md

@@ -0,0 +1,62 @@
+# Phase G slice 2 — evidence-provenance authority supersession ledger
+
+**Date:** 2026-10-03 · **Branch:** `phase-g-strangler-evidence-provenance` · **Unit issue:** conductor/rune#2449
+
+## What was superseded
+
+The pure-Python evidence-provenance implementations (six modules in `src/rune/`, 1796 lines; plus the two OLD deployed vintages and `shared/audit_ledger.py`) are RETIRED as production implementations for their ported surfaces. Production authority now rests with:
+
+1. **Rust crate `src/rust/evidence_provenance/`** — six cores: `lib.rs` (audit_ledger chain + FFI), `verification.rs` (7 verifiers), `probe.rs` (schema gate + budget), `behaviour.rs` (state machine), `habitmath.rs` (reinforce math), `claims.rs` (claim-audit decision skeleton); cdylib FFI (`ep_*` symbols, 21 total), zero external crates.
+2. **Python shims** at `src/rune/{audit_ledger,verification_layer,evidence_probe,behaviour_ledger,behavior,claim_audit}.py` — serving the src/rune authority contract through `ep_loader.py` (in-process, no interpreter startup for the ported logic).
+3. **Deployed shims** at `~/.config/opencode/scripts/{audit_ledger,behavior,claim_audit}.py` — same shape; audit_ledger + claim_audit + behavior carry the LIVE data-path rules (drift-key ledger, live behavior.db, real journal); claim_audit additionally carries the preserved SYMMETRY GUARD (deployed-vintage feature) and the repaired `scan_text()` TUI surface.
+
+## Port ledger (all six, in contract §4 order)
+
+| Port | Module | Rust core | Parity | Commit | Consumer proof |
+|------|--------|-----------|--------|--------|----------------|
+| 1 | audit_ledger | lib.rs chain ops | shadow 18/18; canaries 28/28+23/23 | `114c394`+`4b0d1d2` | live ledger entries 4242 (post-switch write), verify 23-intact |
+| 2 | verification_layer | verification.rs | 33/33 (7 verifiers + CLI render) | `9cb93e6` | contracts.py, canary_native, rune_operator:323 dataclass |
+| 3 | evidence_probe | probe.rs | 24/24 + consumer tests 23/23 | `3450a1c` | rune_operator:581/603, research_stage_executor:312 |
+| 4 | behaviour_ledger | behaviour.rs | 13/13 full-scenario | `8973caa` | testing_mode:19, iteration:23, rune_tui:3152 |
+| 5 | behavior | habitmath.rs | 16/16 + full-stack live-db | `2732677` | rune_tui:83; deployed vintage upgraded (live db read-verified) |
+| 6 | claim_audit | claims.rs | 17/17 + real-journal aggregate (1127 rows) | `969e39f` | rune_tui:62/2468/3752, contracts.py, hook_engine:270 |
+
+Errors: byte-equal (duplicate/unknown-behaviour/unknown-state; probe schema-gate lists incl. Python repr rendering; CLI argparse shapes + exit codes).
+
+## Strangler doctrine (master doc lines 685–770) — step discharge (slice level)
+
+| Step | Requirement | Evidence |
+|------|-------------|----------|
+| 1–4 | candidate built, contract frozen, parity proven | commits `114c394` → `969e39f`; frozen contract `plans/2026-10-03-phase-g-evidence-provenance-contract.md` (commit `7c68e41`); per-port parity harnesses ALL GREEN |
+| 5 | qualification | per-port parity + decision-math batteries; canary pair per port (Python 74/74, Rust 66/66 — all six port sections accumulated); performance follows the slice-1 in-process shape (no interpreter startup; same cdylib) |
+| 6 | canaries conformance | canary_audit_ledger.py 74/74; canary_evidence_provenance_rust.py 66/66 (per-port sections for ALL six ports; dual-mode LIVE/ISOLATED for live-ledger pins — run 18141 repair); embedded tests through shims (verification test, 23 consumer tests) |
+| 7 | shadow comparison vs live-shaped data | port-1 shadow 18/18 vs `939883d:shared/audit_ledger.py` (banked at `114c394`); ports 2–6 use direct byte-parity batteries vs the live originals (same discipline, stronger: full-document byte-quality) |
+| 8 | authority switch + observed consumer evidence | shims deployed + live-verified per port: entry 4242 (first post-switch ledger write), live behavior.db read through the port-5 shim, real 1127-row journal through the port-6 aggregation, TUI backend trio imports, TUI scan_text FIRST-EVER live call |
+| 9 | runtime evidence post-switch | post-switch walls per port: parity round-trips, embedded tests, consumer chains (rune.behaviour_ledger / rune.evidence_probe / rune.claim_audit + deployed trio) — all GREEN |
+| 10 | old production path unreachable | `import audit_ledger` (deployed consumers) → shim; `rune.behaviour_ledger` / `rune.evidence_probe` / `rune.claim_audit` / `rune.verification_layer` → shims; `shared/audit_ledger.py` had ZERO importers (verified by sweep incl. path-string forms) — DELETED |
+| 11 | old implementation removed or reference-only | `shared/audit_ledger.py` DELETED (this commit, after the proven wall + zero-importer sweep); six src/rune modules remain as shims (the API contract); original Python lives in git history. Coverage registry remapped: `audit_ledger` removed from SHARED_D; gate exit 0 post-deletion |
+| 12 | supersession ledger | THIS FILE |
+
+Deletion discipline (language-governance rule ⑥): `shared/audit_ledger.py` removed only after (a) the deployed shim proved live against the real ledger, (b) the shadow wall was green, (c) a zero-importer sweep across src/ shared/ scripts/ tests/. The remaining five src/rune originals were rewritten AS shims in their own commits (git history holds each original); they are the API contract and stay.
+
+## Vintage-merge disclosures
+
+- **SYMMETRY GUARD preserved:** the deployed `claim_audit` vintage carried `research_lens.symmetry_check` integration (2026-08-15) absent from src/rune — preserved in both shims (feature-preserving merge; load-bearing behavior).
+- **DEAD CONSUMER REPAIRED:** `rune_tui.py:3752` `claim_audit.scan_text()` had NO implementation in either vintage (silent try/except death) — now implemented, first-class, live-verified.
+- **Sequence break (port 1):** the audit_ledger shim was deployed BEFORE its canary pair existed; both canaries subsequently written and green — disclosed on #2449 comment 33817, not retrofitted.
+
+## Consumer map at supersession
+
+- `~/.config/opencode/scripts/rune_tui.py` — claim_audit (report L2468, scan_text L3752), behaviour (L3152), behavior (L83).
+- `src/rune/rune_operator.py` — evidence_probe (L581/603), VerificationResult dataclass (L323).
+- `src/rune/contracts.py` — dynamic `__import__` surfaces (verification_layer, claim_audit).
+- `src/rune/testing_mode.py:19` / `src/rune/iteration.py:23` — behaviour_ledger constants + class.
+- `scripts/research_stage_executor.py:312` — evidence_probe orchestration.
+- `~/.config/opencode/scripts/curator.py` / `canary_full_system.py` — audit_ledger (deployed shim).
+- `src/rune/dependency_tracker.py` — map-strings only (NOT an import).
+
+## Live-data rules (contract §3) — honored in the shims
+
+- Live promotion ledger: drift key verified 23-intact through the shim + FFI; explicit `AUDIT_LEDGER_KEY` override honored.
+- Live behavior.db: read/written through the deployed shim at `~/.config/opencode/memory/behavior.db`; parity scenarios ran on temp dirs only.
+- Live claim_audit journal (1127 rows): read-only aggregate through the Rust core; writes stay Python.

plans/2026-10-04-phase-h-go-frontend-rust-backend.md

@@ -0,0 +1,97 @@
+# Phase H plan — Go front end / Rust back end (Nick's architecture directive)
+
+Status: PLAN (awaiting Nick's sign-off before any code)
+Directive: USER-LOCKED (2026-10-04). Supersedes the KEEP-PYTHON verdicts in
+docs/rebase-language-rubric.md wherever they conflict.
+
+## 1. The directive
+
+Go owns the front end: runtime entry points, the first-call surface, the
+user-facing interface and its calls. Rust owns the back end: every core
+logic module. Python survives only as transitional glue inside a module
+until its own Go/Rust surface lands.
+
+## 2. What "front end" means concretely here
+
+From the runtime-audit memory (2026-09-10): the live entry chain is
+rune_tui -> send_task -> ContextBroker -> ModelRouter -> local/Cloud
+transports. The user-facing calls are: the TUI process itself, the CLI
+entry (python -m rune / rune binary), the operator message path, and the
+OpenAI-compatible /v1 endpoints MiMoCode serves.
+
+Candidates for the Go first-call layer, in dependency order:
+- rune binary (process entry, arg parsing, process lifecycle) — replaces
+  the Python module-loading bootstrap.
+- CLI/IPC command dispatch — the first-call surface that routes a user
+  command to the right back-end service.
+- The OpenAI-compatible HTTP endpoint surface (/v1 chat completions) —
+  stdlib net/http + NDJSON streaming is exactly the area the rubric called
+  Go's only capability-proven fit (W4 evidence, unchanged by the directive).
+- TUI: NOT in the first Go surface. Textual coupling is deep (80+ modules
+  per the rubric); the front-end Go layer first exposes the API the TUI
+  consumes, and the TUI itself migrates later as its own wave.
+
+## 3. What "back end" means concretely here
+
+All pure-logic modules move into the two existing zero-dep crates
+(evidence_provenance, query_memory) or a third crate for the remaining
+domains. The zero-external-crate discipline stands (the rubric's W4 Rust
+kill-rule for network code stays valid INSIDE Rust crates: no network code
+in crates, that belongs to the Go layer).
+
+Back-end candidates not yet ported (pure logic, no external deps):
+- drift_core, drift_cache, drift_compression (scored math) — memory umbrella
+- warm_neuron_store/warm_router scoring paths — memory umbrella
+- memory_store consolidation/scoring helpers — memory umbrella
+- capability_fit/capability_broker scoring — capability umbrella
+- tokenizer/counting helpers in token_optimizer — inference umbrella
+Each port follows the slice-2 pipeline: contract, zero-dep Rust, byte-parity
+battery vs the Python vintage, dual-mode canary, consumer import chain,
+CI green, supersession ledger.
+
+## 4. Sequencing (per wave, each independently mergeable)
+
+H0 — enablement (no behavior change):
+- Install Go on the host + the runner user's PATH; pin a version in
+  requirements-ci-equivalent (a go-version file + CI check).
+- CI: add a Go build+vet+test job (empty module, exits 0) so the pipeline
+  carries Go before any code lands.
+
+H1 — Go first-call shim:
+- Go binary `rune` replacing the Python entrypoint's process bootstrap:
+  arg parsing, env resolution, spawn the Python runtime (transitional).
+- Canary: same first-call contract (exit codes, env handoff, TTY attach).
+
+H2 — Go command dispatch + /v1 endpoint:
+- Go serves /v1 chat completions + CLI dispatch, calling the Python core
+  through the same local transport the TUI uses today.
+- Parity battery: request/response shapes vs the Python server for the
+  same canned conversations (byte-level for metadata, streaming NDJSON).
+
+H3 — back-end wave (parallel to H1/H2 where independent):
+- Ports listed in section 3, one or two modules per slice, same slice-2
+  discipline. No port starts without its parity battery written first.
+
+H4 — TUI migration wave (its own contract, later):
+- Only after H1-H2 prove the Go front end serves the same surfaces the TUI
+  consumes. The TUI is the largest single module (4k+ lines, Textual) and
+  earns its own contract.
+
+## 5. Honest constraints (carried from the rubric, not contradicted)
+
+- Go must be installed first (rubric D5 gate: it failed this before; the
+  directive now outweighs the gate but installation is still step zero).
+- Network/streaming code lives in the Go layer, never in Rust crates
+  (rubric W4: stdlib-only Rust has no credible HTTP/SSE precedent).
+- SQLite/regex/file-IO stay at their current language boundaries per the
+  zero-dep split law from slice 2 (math Rust, IO at the edges).
+- Every surface gets the same proof pipeline as slice 2: observed-not-
+  invented expectations, byte parity, dual-mode canary, CI green.
+
+## 6. Success measure
+
+The tranche is complete when: the `rune` process starts as a Go binary;
+user-facing calls (CLI, /v1, operator path) are served by Go; every core
+logic module on the port list is byte-parity Rust; Python remains only in
+surfaces explicitly contracted as keep-Python (TUI internals until H4,
+test harness, canary frameworks).

plans/2026-10-04-total-rebase-tranche.md

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+# TOTAL REBASE TRANCHE — Rune to Go/Rust (R2)
+
+**Status:** DESIGN — awaiting Nick's approval gate (TRANCHE-DEPTH TEMPLATE §4)
+**Supersedes:** the KEEP-PYTHON rubric verdicts (already superseded by Nick's
+Go-front/Rust-back directive) and extends Phase H (H0–H4 slice 1, merged
+`693a494`, v0.90.0) from first ports to total rebase.
+**Nick's directives (verbatim anchors):**
+- "i want the whole codebase rebased in rust and go"
+- "everything should initiate with go as the runtime, and reactive adaptable
+  runtime should be go"
+- "the deterministic backend i.e memory storage, architectures and elastic
+  cognition and everything like that should be in rust"
+- "go should be the reactive front end to what interfaces with the user —
+  not gui — the deliverables and chat interactions as well as how rune
+  handles thoughts and runtime"
+- "the zero dependency rule should be in place but the rebase should rebuild
+  those aspects into the new architecture and make them operational"
+- "the textual tui should be last but everything should be wired into the
+  textual tui"
+- "start with the scaffolding first as everything relies on that, then use
+  the new rust scaffolding to make sure everything else is built towards
+  scaffold protocol"
+- "the scaffolding function should be a rust execution but go start"
+
+## 1. Grounding summary (measured 2026-10-04, from the spine store + wc)
+
+- 161 modules with source, **64,482 lines** of `src/rune/` Python.
+- Draft classification (rule-based, to be function-level verified in Wave 0):
+  - **RUST (deterministic backend):** 49 modules, 26,772 lines — memory,
+    drift, warm, capability, token, spine, scaffold, construction_*,
+    structural_store, curator, consolidation, elastic cognition, ledgers,
+    audit, evidence, contracts, sleep_time, subconscious, persona_gate,
+    context_broker, growth.
+  - **GO (reactive runtime + user-facing):** 10 modules, 7,043 lines —
+    operator, transports, dispatch, provider registry, adaptive router,
+    hook engine, local tool runtime, work manager, deploy_qualify.
+  - **TUI-last:** 4 modules, 4,889 lines — rune_tui (4,041), tui_validator,
+    tui_backlog, tui_transport.
+  - **UNCLASSIFIED (Wave 0 must disposition each with evidence):** 73
+    modules, 21,473 lines — voice_*, tool_executor, model_routing/registry,
+    event_bus, cron_engine, message_queue, identity_anchors, pins,
+    stage_guards, tier_manager, witness, etc.
+  - **Test infra:** 23 canary/test modules, 4,211 lines — rewritten per wave
+    (Rust canaries port with their surface; Go canaries for the front).
+  - **Retires:** `__init__`, `__main__`, `memory_env` (bootstrap glue —
+    subsumed by the Go runtime's env contract).
+- Existing Rust (merged, production-proven): 6 zero-dep crates
+  (query_memory, evidence_provenance, rune_spine, memory_scoring,
+  capability_scoring, token_counting), 338k bytes, all with parity
+  batteries. Go: rune-entry (H1 shim + H2 /v1 front door).
+- Stragglers from R1 folded in: #2171, #2119 (TUI), #1844 (salience_gate),
+  #1755 (goal._load), #1738 (failure_auto_filer).
+
+## 2. Objective
+
+Every line of rune's Python runtime is rebased into the dichotomy —
+**Go initiates and reacts; Rust determines and stores** — with the
+scaffolding protocol rebuilt FIRST (Go start / Rust execution) so every
+subsequent conversion is driven, checked, and closed by the new protocol
+itself. Python is deleted only after the replacement is parity-proven and
+CI-green (strangler exit law). The Textual TUI is last and stays the
+integration surface: everything wires into it over the transport seam.
+
+## 3. The hard constraint analysis (zero-dep + total rebase — feasibility)
+
+Nick asked: confirm or deny. **Confirmed possible**, amended per his
+critiques (2026-10-04):
+
+- **Hybridized membrane, not a wall (Nick's correction):** Go remains the
+  reactive initiator, but "Rust never touches a socket" is WITHDRAWN as an
+  absolute. The languages interoperate where coherence demands: Rust cores
+  callable from Go (the proven cdylib pattern), Go surfaces invocable from
+  Rust through defined channels, shared wire protocols. The dichotomy is
+  the DEFAULT placement rule; hybrid junctions are deliberate, contracted
+  exceptions — each recorded in the unit's contract.
+- **SQLite STAYS (Nick's ruling):** no bespoke storage engine in this
+  tranche. SQLite remains and is wired into the new architecture — the
+  Rust side reaches it through system-library FFI (legal under zero-dep:
+  a system library is not a crate dependency). The bespoke memory-system
+  redesign is a LATER, separate program.
+- **Reactivity/async:** Go goroutines + channels own the event loops;
+  Rust's deterministic cores stay synchronous behind the membrane.
+- **Regex:** hand-rolled matchers per case (proven: pyjson, word-run
+  scanner, run-collapse). No general regex engine needed.
+- **Parity-plus-improvement (Nick's upgrade):** parity is the FLOOR, not
+  the ceiling. Every unit answers "parity OR measurably better" —
+  efficiency improvements are in scope per function (Rust zero-copy and
+  exactness, Go goroutine-native concurrency), bloat from bad syntax is
+  removed, and functionality is the non-negotiable gate. Improvements
+  carry measurements; the parity battery proves no behavior regression
+  either way.
+- **TUI wiring is continuous (Nick's correction):** each landed surface
+  wires toward the Textual TUI over the transport seam as part of its
+  unit contract — the final TUI wave integrates a system already aimed
+  at it, not a retrofit.
+- **Language intelligence in the protocol (Nick's addition):** the
+  scaffolding gains a first-class placement decision — for rune, the
+  Go/Rust dichotomy rule (reactive/initiating → Go; deterministic/
+  stateful → Rust); for other projects, a language-fit assessment at
+  construction-classification time (the protocol recommends the right
+  language for the task's characteristics).
+- **Provenance lock (Nick's verification):** the scaffolding being ported
+  in Wave 1 is the V1-ACCEPTED system per docs/SCAFFOLDING_V1_DEFINITION.md
+  (T18 §18B; North Star = Nick's verbatim words; 17/17 acceptance gates).
+  The Wave 1 parity replay against the production contract ledger proves
+  the rebuild is that design, not a drift.
+
+## 4. Wave structure (each wave independently mergeable, scaffolding-gated)
+
+### Wave 0 — Grounding + inventory verification (the template's bar)
+- Function-level mapping of all 161 modules (the spine gives structure;
+  wave 0 verifies 100% of functions and classifies the 73 UNCLASSIFIED
+  with evidence).
+- Disposition the 5 R1 stragglers.
+- Produce the per-unit issue factory input: one issue per function,
+  each answering improve/fix/missing-connectors with evidence.
+- Deliverable: `plans/total-rebase-inventory.md` + issues filed.
+- Exit gate: inventory signed off by Nick (the approval gate).
+
+### Wave 1 — The scaffolding engine reborn (Go start / Rust execution)
+**Everything depends on this — it goes first, per Nick's directive.**
+- The rebuild target is the V1-ACCEPTED system (Nick's design —
+  docs/SCAFFOLDING_V1_DEFINITION.md, North Star verbatim, 17/17
+  acceptance gates). The parity replay against the production contract
+  ledger is the proof the rebuild IS that design.
+- Rust crate `scaffold_core`: the construction machinery as pure
+  deterministic logic — contract lifecycle (draft→approved→building→
+  verifying→closed), closure classification (correctly_predicted et al.),
+  scope resolution, legal transitions, the contract store.
+  Source modules: scaffold.py, construction_interface.py,
+  construction_decision.py, construction_intent.py, structural_store.py
+  (parts not already in rune_spine), contracts.py, toolchain.py.
+- Go surface `rune-scaffold` (extends rune-entry): the initiation layer —
+  submit-need/observe/transition/close CLI + /v1 endpoints, delegating to
+  the Rust core.
+- NEW per Nick: the **language-placement decision** lands in the protocol
+  here — construction classification gains a language-fit assessment
+  (rune: the Go/Rust dichotomy rule; other projects: characteristic-based
+  recommendation). Every later contract carries its placement verdict.
+- NEW per Nick: parity is the floor — the engine itself is the first
+  beneficiary of the parity-plus-improvement rule (measured improvements
+  allowed, functionality preserved, no-regression proven).
+- Exit gate: the R2 tranche's own remaining waves are driven THROUGH the
+  new engine (the protocol builds itself under its own rules).
+
+### Wave 2 — Memory/storage backend (Rust, SQLite retained)
+- SQLite is NOT replaced (Nick's ruling). The Rust memory core reaches it
+  via system-library FFI (zero-dep legal); memory_store.py (2,435 lines)
+  is decomposed: query paths and consolidation logic into Rust, the SQLite
+  mechanics behind a thin storage trait that maps to libsqlite3 today and
+  to the future bespoke engine LATER without consumer churn.
+- elastic_cognition, memory_consolidation, sleep_time, curator,
+  subconscious_pass, drift_* (remaining DB-backed surfaces), journal,
+  recall_* (recall_router is routing → boundary checked at Wave 0
+  disposition).
+- Data safety gate: checksum-verified read-back of the live store through
+  the new engine; zero writes until the read path is proven identical.
+
+### Wave 3 — Cognition + architecture engines (Rust)
+- The remaining deterministic cores: capability_broker decision logic,
+  context_broker, persona_gate, growth, identity_anchors, pins,
+  stage_guards, tier_manager, witness, safety_override, abstraction,
+  verification surfaces.
+- Ports already merged (memory_scoring, capability_scoring,
+  token_counting, rune_spine) are verified against the new scaffold
+  protocol and wired into the final architecture.
+
+### Wave 4 — The reactive runtime (Go)
+- The operator turn loop (rune_operator.py, 2,697 lines), chat
+  interactions, deliverables production, model routing at call time
+  (adaptive_router, model_registry/profiles/routing, provider_*),
+  tool execution (tool_executor, tool_protocol, local_tool_runtime),
+  event surfaces (event_bus, message_queue, cron_engine, hook_engine),
+  voice output chain (voice_*) as deliverable production.
+- The /v1 surface deepens to carry the full interaction contract;
+  NDJSON streaming becomes the standard response shape.
+
+### Wave 5 — Python retirement sweep
+- Every Python module whose surfaces have landed is deleted (strangler
+  exit: parity proven + CI green + deployed one cycle). Shared/ vintage
+  mirrors retired with them.
+- The glue shims (ms_loader, cs_loader, tc_loader, spine_loader) retire
+  when their consumers no longer speak Python at all.
+
+### Wave 6 — TUI last (but wired continuously)
+- Every wave before this one ships its transport-seam wiring toward the
+  TUI as part of each unit's contract (Nick's correction: natural,
+  continuous wiring — not a retrofit wave).
+- Then the TUI itself: a thin Textual render shell over the wire (all
+  logic already Go/Rust by then) or a port — disposition decided on the
+  evidence of everything that came before.
+
+### Wave 7 — Final audit
+- Language-bar measurement, the full scaffolding ledger replayed, the
+  tranche's closure report with per-wave evidence.
+
+## 5. Per-unit discipline (the template, unchanged)
+
+- One issue per function via the issue factory; each answers
+  improve/fix/missing-connectors with evidence.
+- Every unit runs the scaffolding pipeline end-to-end: submit-need →
+  contract → approval → canary-first (red proven) → implementation →
+  parity battery vs the Python vintage → closure audit (structural ids,
+  never file paths — the closure vocabulary law).
+- Per-unit decisions on evidence, never pre-decided globally: each
+  function's Go-vs-Rust placement is assessed by the dichotomy rule with
+  the measured call graph, not by the draft classification alone.
+- Bug-fix contract governs every defect found en route (red test first,
+  regression frozen).
+
+## 6. Verification gates
+
+- CI green per wave (crate builds, Go vet/test/build, canaries, henxels,
+  type ratchet until the Python ratchet itself retires in Wave 5).
+- Parity batteries are byte-level for deterministic surfaces, shape-level
+  modulo volatile fields for wire surfaces.
+- The scaffolding closure audit for every contract: correctly_predicted
+  or honestly flagged, never silent.
+- Deploy qualification per merge (the pipeline that proved itself today).
+
+### The 90/100 coverage law (Nick, 2026-10-05 — GOVERNING from W3.4 on)
+
+Per Nick: "if it's realistically achievable but aim higher also if that's
+realistically achievable. go to 100% where achievable."
+
+- **100% where achievable — the deterministic Rust kernels.** Every kernel
+  crate (memory_retrieval, cognition_core, scaffold_core, memory_storage,
+  and every future crate) targets 100% BRANCH coverage via its parity
+  matrices + the pytest shim battery: every branch has real reachable
+  semantics, and exhaustive enumeration is exactly what the batteries do.
+  Achievability is measured per crate at wave close; a kernel below 100%
+  carries the named unreachable case or it isn't done.
+- **≥90% on the changed-lines bar (diff-cover), aiming higher.** The floor
+  stays a floor; the working standard per slice is 90%+ on changed lines;
+  whatever a slice achieves beyond 90 becomes the next slice's personal
+  benchmark (per-unit "aim higher" — the number climbs wave over wave).
+  The floor ratchet itself moves after consecutive clean waves
+  (70 → 76 → 84 → 90; each raise is a commit, never a step down).
+- **Glue/failure branches: 90%+ with byte-compare proofs.** The stubs and
+  probe branches that only fire in a broken world are covered by honest
+  fixtures (real import-failure probes like the from-import resolution
+  law) — never by fake-triggered pragmas. A branch covered by a lying
+  fixture is WORSE than uncovered; if it can't be honestly reached, it's
+  named in the wave's closure report with the reason.
+- **Assertion quality is part of the bar.** A test that touches a line
+  without verifying its OUTPUT doesn't count toward the bar — byte-compare
+  / exact-value asserts are the standard; "is not None" assertions reject
+  at review.
+
+## 7. Risk register
+
+- **SQLite FFI correctness** (Wave 2) — the storage layer is retained but
+  re-wired; mitigations: read-path proven identical before any write,
+  checksum-verified read-back of the live store, the storage trait
+  boundary keeps the future bespoke swap cheap.
+- **Hybrid membrane drift** — junctions multiply ad-hoc if ungoverned;
+  every Go↔Rust interaction point is a contracted, recorded decision in
+  its unit's contract (the dichotomy is the default; hybrids justify
+  themselves per unit).
+- **Improvement regressions** — parity-plus-improvement invites subtle
+  behavior changes; every improvement carries a measurement AND the parity
+  battery stays authoritative for no-regression.
+- **Go↔Rust call latency** — measure in Wave 1; the architecture assumes
+  local transport cost is negligible vs model latency; if measured wrong,
+  the membrane's transport moves (decision recorded, not improvised).
+- **Context-window economics** — 1,852-style issue volumes mean the
+  pipeline must multiplex (no-wait law) and local models carry routine
+  units (custodian pattern).
+- **Scope creep during Wave 0** — the inventory is measured and frozen
+  before design; additions go through scope amendments.
+
+## 8. Rollback
+
+- Every wave merges independently; master stays deployable at each
+  boundary (the strangler's whole point).
+- The Python vintage remains until Wave 5 deletion gates pass; a wave
+  revert = revert the merge commit (deploy qualification re-runs).
+- The scaffolding engine's Wave 1 parity replay means even the protocol's
+  own replacement is reversible against recorded history.
+
+## 9. Approval gate
+
+This tranche does not execute until Nick approves. On approval, Wave 0
+starts immediately and runs without consent blockers (standing directive),
+with self-verified checkpoints and defect filing.

plans/total-rebase-inventory.md

@@ -0,0 +1,196 @@
+# Total-Rebase Inventory (R2 Wave 0.1) — measured 2026-10-04
+
+Generated from `store/rebase/inventory.json` (AST function-level extraction) +
+`store/rebase/classification.json` (import/content evidence per module).
+Placement law: reactive/initiating/user-facing/network/turn-time → GO;
+deterministic/stateful/storage/cognition → RUST; Textual rendering → TUI-LAST;
+pure compute with no I/O markers defaults to the deterministic backend.
+
+## Totals
+
+| Side | Modules | Lines | Functions |
+|---|---|---|---|
+| GO | 43 | 19495 | 708 |
+| RUST | 93 | 36215 | 1091 |
+| TUI-LAST | 7 | 5438 | 225 |
+| TEST-INFRA | 29 | 5395 | 158 |
+| RETIRES | 2 | 93 | 9 |
+
+## Per-module classification (evidence-carrying)
+
+| Module | Side | Lines | Functions | Evidence |
+|---|---|---|---|---|
+| rune_tui | TUI-LAST | 4041 | 166 | textual/rich imports: ['rich', 'textual'] |
+| rune_operator | GO | 2697 | 68 | network/concurrency imports: ['threading', 'urllib']; reactive/initiating domain |
+| memory_store | RUST | 2435 | 56 | sqlite3 (storage-backed); network/concurrency imports: ['subprocess']; deterministic/state domain |
+| curator | RUST | 1838 | 43 | sqlite3 (storage-backed); network/concurrency imports: ['subprocess']; deterministic/state domain |
+| tool_executor | GO | 1812 | 47 | network/concurrency imports: ['subprocess']; reactive/initiating domain |
+| warm_router | RUST | 1536 | 36 | sqlite3 (storage-backed); network/concurrency imports: ['subprocess']; reactive/initiating domain; deterministic/state domain |
+| construction_interface | RUST | 1039 | 25 | deterministic/state domain |
+| spine | RUST | 1019 | 31 | deterministic/state domain |
+| sleep_time | RUST | 971 | 25 | sqlite3 (storage-backed); network/concurrency imports: ['subprocess', 'urllib']; deterministic/state domain |
+| construction_decision | RUST | 949 | 18 | deterministic/state domain |
+| capability_broker | RUST | 900 | 21 | deterministic/state domain |
+| hook_engine | GO | 860 | 8 | reactive/initiating domain |
+| scaffold | RUST | 854 | 31 | network/concurrency imports: ['subprocess']; deterministic/state domain |
+| local_tool_runtime | GO | 806 | 32 | network/concurrency imports: ['threading', 'urllib']; reactive/initiating domain |
+| context_broker | GO | 768 | 23 | network/concurrency imports: ['threading'] |
+| elastic_cognition | RUST | 765 | 13 | network/concurrency imports: ['urllib']; deterministic/state domain |
+| memory_consolidation | RUST | 733 | 20 | network/concurrency imports: ['subprocess']; deterministic/state domain |
+| provider_registry | GO | 666 | 28 | network/concurrency imports: ['threading', 'urllib']; reactive/initiating domain |
+| persona_gate | RUST | 661 | 21 | sqlite3 (storage-backed); network/concurrency imports: ['subprocess', 'urllib']; deterministic/state domain |
+| structural_store | RUST | 656 | 33 | deterministic/state domain |
+| contracts | RUST | 626 | 7 | deterministic/state domain |
+| adaptive_router | GO | 625 | 19 | reactive/initiating domain |
+| work_manager | GO | 591 | 25 | reactive/initiating domain |
+| abstraction | RUST | 587 | 12 | sqlite3 (storage-backed); network/concurrency imports: ['urllib']; deterministic/state domain |
+| construction_intent | RUST | 555 | 16 | deterministic/state domain |
+| canary_audit_ledger | TEST-INFRA | 540 | 2 | canary/test module |
+| safety_override | RUST | 530 | 18 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| failure_auto_filer | GO | 527 | 28 | network/concurrency imports: ['threading'] |
+| build_mode | GO | 517 | 34 | network/concurrency imports: ['subprocess'] |
+| drift_core | RUST | 517 | 14 | deterministic/state domain |
+| event_wait | GO | 517 | 14 | network/concurrency imports: ['subprocess', 'urllib']; reactive/initiating domain |
+| tui_validator | TUI-LAST | 514 | 13 | tui family |
+| memory_selector | RUST | 511 | 14 | deterministic/state domain |
+| system_registry | RUST | 501 | 14 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| construction_pattern | RUST | 496 | 13 | deterministic/state domain |
+| cache | GO | 492 | 17 | sqlite3 (storage-backed); network/concurrency imports: ['threading'] |
+| claim_audit | RUST | 483 | 14 | sqlite3 (storage-backed); deterministic/state domain |
+| graph_memory | RUST | 474 | 9 | sqlite3 (storage-backed); deterministic/state domain |
+| identity_anchors | RUST | 474 | 8 | deterministic/state domain |
+| model_connect | GO | 462 | 10 | network/concurrency imports: ['urllib']; reactive/initiating domain |
+| auto_tasks | GO | 460 | 14 | sqlite3 (storage-backed); network/concurrency imports: ['subprocess'] |
+| capability_fit | RUST | 455 | 14 | deterministic/state domain |
+| tool_protocol | GO | 455 | 27 | reactive/initiating domain |
+| drift_ledger | RUST | 453 | 16 | sqlite3 (storage-backed); deterministic/state domain |
+| witness | RUST | 451 | 10 | network/concurrency imports: ['urllib']; deterministic/state domain |
+| goal | RUST | 441 | 20 | network/concurrency imports: ['urllib']; deterministic/state domain |
+| release_notes | GO | 439 | 17 | network/concurrency imports: ['urllib'] |
+| cron_engine | GO | 436 | 28 | network/concurrency imports: ['subprocess', 'threading']; reactive/initiating domain |
+| model_profiles | GO | 435 | 15 | network/concurrency imports: ['urllib']; reactive/initiating domain |
+| microkernel | GO | 434 | 12 | network/concurrency imports: ['subprocess', 'threading'] |
+| model_routing | GO | 432 | 15 | network/concurrency imports: ['urllib']; reactive/initiating domain |
+| voice_hybrid | RUST | 421 | 10 | sqlite3 (storage-backed); reactive/initiating domain |
+| behavior | RUST | 407 | 9 | sqlite3 (storage-backed); deterministic/state domain |
+| token_optimizer | RUST | 407 | 23 | deterministic/state domain |
+| capability_ledger | RUST | 405 | 19 | deterministic/state domain |
+| night_mode | GO | 405 | 19 | network/concurrency imports: ['subprocess', 'threading', 'urllib'] |
+| chat_bubble | TUI-LAST | 401 | 16 | textual/rich imports: ['rich', 'textual'] |
+| growth_delta | RUST | 400 | 16 | network/concurrency imports: ['subprocess', 'urllib']; deterministic/state domain |
+| construction_mode | RUST | 395 | 5 | deterministic/state domain |
+| prompt_sync | RUST | 376 | 14 | sqlite3 (storage-backed) |
+| provider_budget | GO | 354 | 21 | network/concurrency imports: ['urllib']; reactive/initiating domain |
+| structural_model | RUST | 352 | 21 | deterministic/state domain |
+| programme_continuation | RUST | 349 | 11 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| canary_rune_serve | TEST-INFRA | 329 | 13 | canary/test module |
+| builder_bridge | GO | 326 | 11 | reactive/initiating domain |
+| canary_p1_07 | TEST-INFRA | 324 | 12 | canary/test module |
+| layout_contract | RUST | 316 | 6 | deterministic/state domain |
+| message_queue | GO | 316 | 14 | reactive/initiating domain |
+| drift_observability | RUST | 315 | 9 | deterministic/state domain |
+| build_basis | RUST | 314 | 12 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| canary_p0_07 | TEST-INFRA | 310 | 11 | canary/test module |
+| drift_compression | RUST | 307 | 12 | deterministic/state domain |
+| event_envelope | GO | 303 | 8 | reactive/initiating domain |
+| attention_capsule | RUST | 296 | 7 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| canary_p1_01 | TEST-INFRA | 294 | 14 | canary/test module |
+| voice_sync | RUST | 293 | 10 | sqlite3 (storage-backed); reactive/initiating domain |
+| drift_cache | RUST | 292 | 16 | deterministic/state domain |
+| outcome_ledger | RUST | 286 | 8 | sqlite3 (storage-backed); deterministic/state domain |
+| time_awareness | RUST | 283 | 15 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| tiered_executor | GO | 282 | 9 | network/concurrency imports: ['urllib'] |
+| stage_guards | RUST | 281 | 11 | network/concurrency imports: ['subprocess']; deterministic/state domain |
+| standardized_providers | GO | 281 | 5 | reactive/initiating domain |
+| canary_p1_06 | TEST-INFRA | 280 | 9 | canary/test module |
+| progressive_escalation | RUST | 279 | 9 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| pins | RUST | 276 | 11 | deterministic/state domain |
+| canary_p1_03 | TEST-INFRA | 271 | 9 | canary/test module |
+| auto_context | GO | 270 | 8 | network/concurrency imports: ['subprocess'] |
+| task_persist | RUST | 269 | 10 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| context_pressure | RUST | 262 | 9 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| canary_gitea_automation | TEST-INFRA | 261 | 3 | canary/test module |
+| canary_p1_02 | TEST-INFRA | 253 | 12 | canary/test module |
+| construction_patterns_builtin | RUST | 249 | 1 | deterministic/state domain |
+| canary_full_system | TEST-INFRA | 244 | 2 | canary/test module |
+| event_bus | GO | 244 | 7 | reactive/initiating domain |
+| salience_gate | RUST | 243 | 4 | deterministic/state domain |
+| self_improve | RUST | 242 | 5 | sqlite3 (storage-backed) |
+| construction_activation | RUST | 237 | 4 | deterministic/state domain |
+| toolchain | RUST | 236 | 7 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| task_gate | RUST | 235 | 8 | sqlite3 (storage-backed) |
+| core_server | GO | 234 | 13 | network/concurrency imports: ['http', 'urllib']; reactive/initiating domain |
+| audit_ledger | RUST | 231 | 8 | deterministic/state domain |
+| canary_native | TEST-INFRA | 231 | 3 | canary/test module |
+| openai_compat_transport | GO | 227 | 10 | network/concurrency imports: ['urllib']; reactive/initiating domain |
+| shard_manager | RUST | 223 | 10 | sqlite3 (storage-backed) |
+| response_adapter | RUST | 222 | 7 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| evidence_probe | RUST | 212 | 9 | network/concurrency imports: ['subprocess']; deterministic/state domain |
+| model_registry | GO | 211 | 8 | reactive/initiating domain |
+| persona_definition | GO | 210 | 8 | network/concurrency imports: ['subprocess'] |
+| cognitive_budgeter | RUST | 208 | 3 | deterministic/state domain |
+| canary_p0_04 | TEST-INFRA | 207 | 8 | canary/test module |
+| forge_client | GO | 203 | 19 | network/concurrency imports: ['urllib']; reactive/initiating domain |
+| dependency_tracker | RUST | 202 | 5 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| canary_context_broker | TEST-INFRA | 199 | 10 | canary/test module |
+| canary_p0_05 | TEST-INFRA | 199 | 16 | canary/test module |
+| testing_mode | RUST | 196 | 13 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| parallel_processor | GO | 194 | 17 | network/concurrency imports: ['threading'] |
+| canary_spine_meta | TEST-INFRA | 192 | 7 | canary/test module |
+| iteration | RUST | 190 | 8 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| verification_layer | RUST | 189 | 12 | deterministic/state domain |
+| subconscious_pass | RUST | 187 | 6 | deterministic/state domain |
+| ffi_query_memory_smoke | RUST | 182 | 5 | deterministic/state domain |
+| tier_manager | RUST | 182 | 9 | deterministic/state domain |
+| canary_tui_transport | TEST-INFRA | 174 | 7 | canary/test module |
+| behaviour_ledger | RUST | 173 | 13 | deterministic/state domain |
+| construction_commands | RUST | 173 | 4 | deterministic/state domain |
+| canary_tui_drift | TEST-INFRA | 170 | 2 | canary/test module |
+| intent_continuity | RUST | 168 | 11 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| rune_profiler | RUST | 165 | 3 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| inference_trace | RUST | 164 | 6 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| ms_loader | RUST | 163 | 16 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| subsystem_health | GO | 163 | 8 | network/concurrency imports: ['threading'] |
+| recall_router | GO | 162 | 3 | reactive/initiating domain |
+| voicebox | GO | 161 | 11 | network/concurrency imports: ['subprocess']; reactive/initiating domain |
+| canary_gitea_pipeline | TEST-INFRA | 159 | 2 | canary/test module |
+| forge | GO | 146 | 12 | network/concurrency imports: ['subprocess', 'urllib'] |
+| rune_graphic | TUI-LAST | 145 | 5 | textual/rich imports: ['rich'] |
+| connection_pool | GO | 144 | 9 | sqlite3 (storage-backed); network/concurrency imports: ['threading'] |
+| recall_uplift | RUST | 141 | 1 | sqlite3 (storage-backed) |
+| project_registry | RUST | 139 | 12 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| construction_depth | RUST | 138 | 2 | deterministic/state domain |
+| voice_injector | GO | 138 | 5 | reactive/initiating domain |
+| canary_rune_entry | TEST-INFRA | 137 | 3 | canary/test module |
+| construction_projection | RUST | 135 | 3 | deterministic/state domain |
+| rune_spinner | RUST | 130 | 5 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| tui_backlog | TUI-LAST | 125 | 5 | tui family |
+| warm_neuron_store | RUST | 122 | 6 | sqlite3 (storage-backed); deterministic/state domain |
+| drift_resume | RUST | 118 | 3 | deterministic/state domain |
+| wait_guard | RUST | 116 | 1 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| canary_conversation_state | TEST-INFRA | 115 | 2 | canary/test module |
+| canary_query_memory | TEST-INFRA | 110 | 2 | canary/test module |
+| failure_recovery | RUST | 108 | 1 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| graph_projection | RUST | 108 | 5 | deterministic/state domain |
+| tui_transport | TUI-LAST | 108 | 12 | tui family |
+| spine_loader | RUST | 105 | 7 | deterministic/state domain |
+| canary_unbounded | TEST-INFRA | 104 | 2 | canary/test module |
+| message_widgets | TUI-LAST | 104 | 8 | textual/rich imports: ['rich', 'textual'] |
+| cs_loader | RUST | 90 | 5 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| tc_loader | RUST | 88 | 5 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| canary_schema_migration | TEST-INFRA | 86 | 1 | canary/test module |
+| programme_gates | RUST | 85 | 6 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| structural_migration | RUST | 77 | 4 | deterministic/state domain |
+| memory_env | RETIRES | 72 | 8 | bootstrap glue subsumed by the Go runtime env contract |
+| impact_preview | RUST | 69 | 2 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| provider_context | GO | 48 | 1 | reactive/initiating domain |
+| wait_guard_corpus | RUST | 46 | 0 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| canary_cognitive_strata | TEST-INFRA | 44 | 1 | canary/test module |
+| builder_bridge_cli | GO | 42 | 1 | reactive/initiating domain |
+| route_risk_flags | RUST | 37 | 1 | no network/reactive markers — pure compute defaults to the deterministic backend |
+| canary_memory_synthesis | TEST-INFRA | 33 | 1 | canary/test module |
+| canary_resource_authority | TEST-INFRA | 33 | 1 | canary/test module |
+| canary_surface_parity | TEST-INFRA | 33 | 1 | canary/test module |
+| canary_orchestration_foundation | TEST-INFRA | 32 | 1 | canary/test module |
+| canary_gitea_delegation | TEST-INFRA | 31 | 1 | canary/test module |
+| __main__ | RETIRES | 21 | 1 | bootstrap glue subsumed by the Go runtime env contract |

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "rune"
-version = "0.89.0"
+version = "0.99.6"
 description = "Rune — a stateful coding assistant with persistent memory, orchestration, and TUI"
 requires-python = ">=3.10"
 
@@ -16,6 +16,7 @@ dependencies = [
     "aiohttp>=3.9.0",
     "websockets>=12.0",
     "psutil>=5.9.0",
+    "pillow>=10.0",
     "pyyaml>=6.0",
 ]
 

pyrightconfig.json

@@ -29,6 +29,10 @@
     "**/__pycache__"
   ],
   "extraPaths": [
-    "scripts"
+    "scripts",
+    "src/rune",
+    "shared",
+    "src/rust/evidence_provenance",
+    "src/rust/query_memory"
   ]
 }

requirements-ci.txt

@@ -2,7 +2,7 @@
 #    uv pip compile pyproject.toml -o requirements-ci.txt --extra dev --extra memory --python-version 3.11
 aiohappyeyeballs==2.7.1
     # via aiohttp
-aiohttp==3.14.3
+aiohttp==3.14.4
     # via rune (pyproject.toml)
 aiosignal==1.4.0
     # via aiohttp
@@ -50,7 +50,7 @@ markdown-it-py==4.2.0
     #   mdit-py-plugins
     #   rich
     #   textual
-markupsafe==3.0.3
+markupsafe==3.0.4
     # via jinja2
 mdit-py-plugins==0.6.1
     # via textual
@@ -64,7 +64,9 @@ nodeenv==1.11.0
     # via pyright
 packaging==26.3
     # via pytest
-platformdirs==4.12.2
+pillow==12.3.0
+    # via rune (pyproject.toml)
+platformdirs==4.12.3
     # via textual
 pluggy==1.6.0
     # via
@@ -116,7 +118,7 @@ typing-extensions==4.16.0
     #   pyright
     #   textual
     #   textual-autocomplete
-websockets==17.1
+websockets==17.2
     # via rune (pyproject.toml)
 yarl==1.25.1
     # via aiohttp

scripts/structural_coverage_audit.py

@@ -50,7 +50,7 @@ SRC_A = {
     "memory_store": "memory", "memory_selector": "memory",
     "memory_consolidation": "memory", "memory_env": "memory",
     "shard_manager": "memory", "tier_manager": "memory",
-    "graph_memory": "memory", "query_memory": "memory",
+    "graph_memory": "memory",
     "curator": "memory", "sleep_time": "memory",
     "subconscious_pass": "memory", "warm_neuron_store": "memory",
     "warm_router": "memory", "abstraction": "memory",
@@ -166,14 +166,12 @@ SCRIPTS_C = {"fake_worker", "tui_startup_canary"}
 
 # shared/ — harness-facing layer; mirrors of canonical src modules = D
 SHARED_D = {
-    "audit_ledger": "src/rune/audit_ledger.py",
     "dependency_tracker": "src/rune/dependency_tracker.py",
     "drift_cache": "src/rune/drift_cache.py",
     "drift_compression": "src/rune/drift_compression.py",
     "drift_core": "src/rune/drift_core.py",
     "drift_observability": "src/rune/drift_observability.py",
     "gitea_auth": "scripts/gitea_auth.py",
-    "query_memory": "src/rune/query_memory.py",
     "shard_manager": "src/rune/shard_manager.py",
     "subconscious_pass": "src/rune/subconscious_pass.py",
     "tier_manager": "src/rune/tier_manager.py",
@@ -182,7 +180,8 @@ SHARED_B_OWNER = "ops-harness"
 SHARED_B = {"auto_detect", "autonomy_loop", "build_orchestrator",
             "build_pipeline_policy", "cognitive_loop", "custodian",
             "dream_cycle", "gitea_pipeline", "gitea_provision",
-            "graph_shard_bridge", "growth_simulator", "umbrella_update"}
+            "graph_shard_bridge", "growth_simulator", "query_memory",
+            "umbrella_update"}
 
 
 def main() -> int:

scripts/type_check_ratchet.py

@@ -47,7 +47,19 @@ def main() -> int:
         p for p in env.get("PATH", "").split(os.pathsep)
         if "ci-venv" not in p and ".type-venv" not in p and "venv/bin" not in p)
     result = subprocess.run(
-        cmd + [str(ROOT / "src" / "rune"), "--outputjson"],
+        # §16V AMBIENT-INTERPRETER CLOSURE (T7.3 slice-2 CI repair, 2026-10-03):
+        # venv-signal stripping fixed ACTIVATION drift, but dependency
+        # resolution still followed the AMBIENT host interpreter — runner
+        # (py311, no rich/Pillow) vs desktop (3.14 system site with both)
+        # produced 460 vs 454 on the identical tree, and any import-level
+        # ignore flips to reportUnnecessaryTypeIgnoreComment in the other
+        # environment. Pin --pythonpath to the INVOKING interpreter (the
+        # venv running this script) so dependency resolution follows the
+        # installed lock, not the host: CI's .type-venv has the locked deps;
+        # local preflight must run the ratchet from a venv built from
+        # requirements-ci.txt (same lock) — that is now the contract.
+        cmd + [str(ROOT / "src" / "rune"), "--outputjson",
+               "--pythonpath", sys.executable],
         capture_output=True,
         text=True,
         timeout=600,

shared/audit_ledger.py

@@ -1,210 +0,0 @@
-#!/usr/bin/env python3
-"""audit_ledger.py — HMAC-chained tamper-evident promotion ledger.
-
-Every promotion decision is recorded in a hash-chained ledger.
-Tampering with any entry breaks the chain.
-
-Research basis:
-- PoEM (arXiv:2608.16032): HMAC-chained tamper-evident execution ledger
-- Autogenesis (arXiv:2604.15034): versioned interfaces, auditable lineage
-
-Run under ~/.venvs/memory/bin/python3.
-"""
-
-import hashlib
-import hmac
-import json
-import os
-import sys
-from datetime import datetime, timezone
-from typing import Dict, List, Optional
-
-LEDGER_FILE = os.path.expanduser("~/.config/opencode/memory/promotion_ledger.jsonl")
-SECRET_KEY = os.environ.get("AUDIT_LEDGER_KEY", "rune-drift-integrity-2024")
-
-
-def _compute_hash(prev_hash: str, entry: dict) -> str:
-    """Compute HMAC chain hash for a ledger entry."""
-    payload = json.dumps(entry, sort_keys=True).encode()
-    msg = (prev_hash + payload.decode()).encode()
-    return hmac.new(SECRET_KEY.encode(), msg, hashlib.sha256).hexdigest()
-
-
-def append_entry(entry_type: str, entry_id: int, details: dict) -> dict:
-    """Append an entry to the promotion ledger.
-
-    Returns the ledger entry with chain hash.
-    """
-    # Read last hash
-    prev_hash = "genesis"
-    if os.path.exists(LEDGER_FILE):
-        with open(LEDGER_FILE, "r") as f:
-            lines = f.readlines()
-            if lines:
-                try:
-                    last = json.loads(lines[-1])
-                    prev_hash = last.get("hash", "genesis")
-                except json.JSONDecodeError:
-                    prev_hash = "genesis"
-
-    entry = {
-        "type": entry_type,
-        "entry_id": entry_id,
-        "details": details,
-        "timestamp": datetime.now(timezone.utc).isoformat(),
-        "prev_hash": prev_hash,
-    }
-
-    # Compute chain hash
-    entry["hash"] = _compute_hash(prev_hash, entry)
-
-    # Append to ledger
-    os.makedirs(os.path.dirname(LEDGER_FILE), exist_ok=True)
-    with open(LEDGER_FILE, "a") as f:
-        f.write(json.dumps(entry) + "\n")
-
-    return entry
-
-
-def verify_chain() -> dict:
-    """Verify the integrity of the entire ledger chain.
-
-    Returns dict with verification result.
-    """
-    if not os.path.exists(LEDGER_FILE):
-        return {"valid": True, "entries": 0, "reason": "empty ledger"}
-
-    with open(LEDGER_FILE, "r") as f:
-        lines = f.readlines()
-
-    prev_hash = "genesis"
-    for i, line in enumerate(lines):
-        try:
-            entry = json.loads(line)
-        except json.JSONDecodeError:
-            return {"valid": False, "entries": i, "reason": f"invalid JSON at line {i+1}"}
-
-        # Verify prev_hash chain
-        if entry.get("prev_hash") != prev_hash:
-            return {
-                "valid": False,
-                "entries": i,
-                "reason": f"chain broken at line {i+1}: expected prev_hash={prev_hash}, got {entry.get('prev_hash')}"
-            }
-
-        # Verify HMAC
-        stored_hash = entry.get("hash")
-        computed = _compute_hash(prev_hash, {k: v for k, v in entry.items() if k != "hash"})
-        if stored_hash != computed:
-            return {
-                "valid": False,
-                "entries": i,
-                "reason": f"HMAC mismatch at line {i+1}: stored={stored_hash[:16]}..., computed={computed[:16]}..."
-            }
-
-        prev_hash = stored_hash
-
-    return {"valid": True, "entries": len(lines), "reason": "chain intact"}
-
-
-def get_entries(limit: int = 50) -> List[dict]:
-    """Get recent ledger entries."""
-    if not os.path.exists(LEDGER_FILE):
-        return []
-
-    with open(LEDGER_FILE, "r") as f:
-        lines = f.readlines()
-
-    entries = []
-    for line in lines[-limit:]:
-        try:
-            entries.append(json.loads(line))
-        except json.JSONDecodeError:
-            continue
-    return entries
-
-
-def log_promotion(entry_id: int, old_status: str, new_status: str, wash_count: int, reason: str) -> dict:
-    """Log a promotion decision."""
-    return append_entry("promotion", entry_id, {
-        "old_status": old_status,
-        "new_status": new_status,
-        "wash_count": wash_count,
-        "reason": reason,
-    })
-
-
-def log_gate_result(entry_id: int, verdict: str, critics: dict) -> dict:
-    """Log a pre-commit gate result."""
-    return append_entry("gate", entry_id, {
-        "verdict": verdict,
-        "critics": critics,
-    })
-
-
-def log_drift_alert(alert_type: str, message: str, severity: str) -> dict:
-    """Log a drift alert."""
-    return append_entry("alert", 0, {
-        "alert_type": alert_type,
-        "message": message,
-        "severity": severity,
-    })
-
-
-# ═══════════════════════════════════════════════════════════════════════════════
-# CLI
-# ═══════════════════════════════════════════════════════════════════════════════
-
-def main():
-    import argparse
-    parser = argparse.ArgumentParser(description="Promotion audit ledger")
-    sub = parser.add_subparsers(dest="cmd")
-
-    # verify
-    sub.add_parser("verify", help="Verify ledger chain integrity")
-
-    # list [--limit N]
-    p_list = sub.add_parser("list", help="Show recent ledger entries")
-    p_list.add_argument("--limit", type=int, default=20)
-
-    # log-promotion <entry_id> <old> <new> <wash_count> <reason>
-    p_log = sub.add_parser("log-promotion", help="Log a promotion")
-    p_log.add_argument("entry_id", type=int)
-    p_log.add_argument("old_status")
-    p_log.add_argument("new_status")
-    p_log.add_argument("wash_count", type=int)
-    p_log.add_argument("reason")
-
-    args = parser.parse_args()
-
-    if not args.cmd:
-        parser.print_help()
-        sys.exit(1)
-
-    if args.cmd == "verify":
-        result = verify_chain()
-        print(f"Chain valid: {result['valid']}")
-        print(f"Entries: {result['entries']}")
-        print(f"Reason: {result['reason']}")
-
-    elif args.cmd == "list":
-        entries = get_entries(args.limit)
-        if entries:
-            print(f"Recent ledger entries ({len(entries)}):")
-            for e in entries:
-                print(f"  [{e.get('type')}] entry_id={e.get('entry_id')} @ {e.get('timestamp', '')[:19]}")
-                details = e.get('details', {})
-                if e.get('type') == 'promotion':
-                    print(f"    {details.get('old_status')} → {details.get('new_status')} (wash={details.get('wash_count')})")
-                elif e.get('type') == 'gate':
-                    print(f"    verdict={details.get('verdict')}")
-        else:
-            print("No ledger entries.")
-
-    elif args.cmd == "log-promotion":
-        entry = log_promotion(args.entry_id, args.old_status, args.new_status, args.wash_count, args.reason)
-        print(f"Logged: {entry['hash'][:16]}...")
-
-
-if __name__ == "__main__":
-    main()

shared/query_memory.py

@@ -1,17 +1,25 @@
 #!/usr/bin/env python3
 """query_memory.py — Query memory system for adaptive retrieval.
 
-The system remembers what kinds of queries it gets, what retrieval
-strategy worked, and adapts its gate logic accordingly.
+AUTHORITY-SWITCHED (Phase G strangler slice 1, doctrine step 8): the
+classification core now lives in Rust (`src/rust/query_memory/src/lib.rs`,
+cdylib `libquery_memory.so`). This module is a thin ctypes-backed shim over
+`qm_loader.py` serving the FULL historical Python class API — the deployed
+in-process consumers (`memory_store.py`, `growth_simulator.py`) call
+`QueryMemory()` exactly as before and get the Rust core.
 
-This prevents dead weight — memories get tested based on usage
-patterns, not just random exploration.
+Parity evidence: FFI-gap parity EXACT-EQUAL on `get_topic_stats` /
+`get_dead_weight_topics`; verification wall green (FFI smoke 41/41, parity
+harness ALL GREEN, Python canary 12/12, Rust canary 27/27); shadow comparison
+46/46 exact-equal vs the live production store.
 
-Research basis:
-- IGMiRAG (arXiv:2602.07525): Intuition-guided retrieval
-- Task-Adaptive Retrieval (arXiv:2604.07863): Learning from interaction history
-- MemCon (arXiv:2607.13591): Learned policy for consolidation/forgetting
-- Agent-Native Memory (arXiv:2606.24775): Workload-adaptive routing
+The Python implementation this replaces is preserved in git history on branch
+`phase-g-strangler-retrieval-index` (pre-shim commit); per deletion discipline
+it is not kept as a silent fallback — a missing cdylib fails loudly.
+
+Store resolution is unchanged: `$HOME/.config/opencode/memory/query_memory`
+(the Rust core resolves `$HOME` natively; history.jsonl / topic_stats.json
+formats are byte-parity-proven).
 
 Run under ~/.venvs/memory/bin/python3.
 """
@@ -19,15 +27,14 @@ Run under ~/.venvs/memory/bin/python3.
 import json
 import os
 import sys
-from collections import Counter, defaultdict
 from datetime import datetime, timezone
-from typing import Dict, List, Optional, Tuple
 
 QUERY_MEMORY_DIR = os.path.expanduser("~/.config/opencode/memory/query_memory")
 QUERY_HISTORY_FILE = os.path.join(QUERY_MEMORY_DIR, "history.jsonl")
 TOPIC_STATS_FILE = os.path.join(QUERY_MEMORY_DIR, "topic_stats.json")
 
-# Topic keywords for classification
+# Topic keywords (classification table — tie-break law: insertion order is
+# part of the contract; the Rust core carries the identical table).
 TOPIC_KEYWORDS = {
     "guitar": ["guitar", "music", "teaching", "course", "lesson", "chord", "scale"],
     "coding": ["code", "python", "script", "function", "debug", "build", "deploy"],
@@ -41,17 +48,47 @@ TOPIC_KEYWORDS = {
     "creative": ["write", "design", "create", "build", "make", "art", "music"],
 }
 
+# Where the Rust core (qm_loader.py + target/release/libquery_memory.so) lives.
+_QM_CORE_DIR = os.environ.get(
+    "QM_CORE_DIR", "/mnt/workdrive/rune/src/rust/query_memory"
+)
 
-class QueryMemory:
-    """Query memory system for adaptive retrieval."""
+if _QM_CORE_DIR not in sys.path:
+    sys.path.insert(0, _QM_CORE_DIR)
+
+try:
+    from qm_loader import QueryMemory as _RustQueryMemory
+except ImportError as _e:  # pragma: no cover - deployment integrity failure
+    raise ImportError(
+        f"query_memory shim: cannot load the Rust core from {_QM_CORE_DIR!r} "
+        f"({_e}). The cdylib must be built: `cargo build --release` in "
+        f"{_QM_CORE_DIR}. No Python fallback exists by design."
+    ) from _e
+
+
+class QueryMemory(_RustQueryMemory):
+    """Query memory system for adaptive retrieval (Rust core, Python API).
+
+    API (identical to the historical Python implementation):
+      * classify_query(query) -> str
+      * adaptive_exploration_rate(query) -> float
+      * record_query(query, strategy, success) -> None
+      * get_topic_stats() -> dict (topic -> stats, insertion order)
+      * get_dead_weight_topics() -> list[str]
+      * get_health_report() -> dict
+    """
 
     def __init__(self):
+        # Match the historical constructor: ensure the store dir exists,
+        # resolve the store from $HOME (qm_new's native behaviour).
         os.makedirs(QUERY_MEMORY_DIR, exist_ok=True)
-        self.history: List[dict] = self._load_history()
-        self.topic_stats: Dict[str, dict] = self._load_topic_stats()
+        super().__init__()
+        # Historical in-memory attribute: query history loaded at construction,
+        # appended by record_query. (canary check 2 reads len(qm.history).)
+        self.history = self._load_history()
 
-    def _load_history(self) -> List[dict]:
-        """Load query history from disk."""
+    def _load_history(self):
+        """Load query history from disk (historical shape: list of dicts)."""
         if not os.path.exists(QUERY_HISTORY_FILE):
             return []
         entries = []
@@ -63,127 +100,16 @@ class QueryMemory:
                     continue
         return entries
 
-    def _save_history(self, entry: dict):
-        """Append a query entry to history."""
-        with open(QUERY_HISTORY_FILE, "a") as f:
-            f.write(json.dumps(entry) + "\n")
-
-    def _load_topic_stats(self) -> Dict[str, dict]:
-        """Load topic statistics from disk."""
-        if os.path.exists(TOPIC_STATS_FILE):
-            try:
-                with open(TOPIC_STATS_FILE) as f:
-                    return json.load(f)
-            except json.JSONDecodeError:
-                return {}
-        return {}
-
-    def _save_topic_stats(self):
-        """Save topic statistics to disk."""
-        with open(TOPIC_STATS_FILE, "w") as f:
-            json.dump(self.topic_stats, f, indent=2)
-
-    def classify_query(self, query: str) -> str:
-        """Classify a query into a topic.
-
-        Returns the topic with the most keyword matches.
-        Falls back to "general" if no strong match.
-        """
-        query_lower = query.lower()
-        scores = {}
-        for topic, keywords in TOPIC_KEYWORDS.items():
-            score = sum(1 for kw in keywords if kw in query_lower)
-            if score > 0:
-                scores[topic] = score
-
-        if not scores:
-            return "general"
-
-        return max(scores, key=scores.get)
-
     def record_query(self, query: str, strategy: str, success: bool):
-        """Record a query and its outcome.
-
-        Args:
-            query: The query text
-            strategy: "consolidated" or "full_retrieval"
-            success: Whether the retrieval produced useful results
-        """
-        topic = self.classify_query(query)
-        entry = {
+        """Record through the Rust core, then mirror the historical in-memory append."""
+        super().record_query(query, strategy, success)
+        self.history.append({
             "query": query[:100],
-            "topic": topic,
+            "topic": self.classify_query(query),
             "strategy": strategy,
             "success": success,
             "timestamp": datetime.now(timezone.utc).isoformat(),
-        }
-        self.history.append(entry)
-        self._save_history(entry)
-
-        # Update topic stats
-        if topic not in self.topic_stats:
-            self.topic_stats[topic] = {
-                "total_queries": 0,
-                "successful_queries": 0,
-                "consolidated_hits": 0,
-                "full_retrieval_hits": 0,
-                "exploration_rate": 0.30,  # default
-            }
-
-        stats = self.topic_stats[topic]
-        stats["total_queries"] += 1
-        if success:
-            stats["successful_queries"] += 1
-        if strategy == "consolidated":
-            stats["consolidated_hits"] += 1
-        else:
-            stats["full_retrieval_hits"] += 1
-
-        # Adaptive exploration rate: decrease for well-tested topics
-        if stats["total_queries"] >= 10:
-            success_rate = stats["successful_queries"] / stats["total_queries"]
-            if success_rate > 0.8:
-                stats["exploration_rate"] = max(0.10, stats["exploration_rate"] - 0.05)
-            elif success_rate < 0.5:
-                stats["exploration_rate"] = min(0.50, stats["exploration_rate"] + 0.05)
-
-        self._save_topic_stats()
-
-    def get_topic_stats(self) -> Dict[str, dict]:
-        """Get topic statistics."""
-        return self.topic_stats
-
-    def adaptive_exploration_rate(self, query: str) -> float:
-        """Get the exploration rate for a query based on its topic.
-
-        Well-tested topics have lower exploration rates.
-        Untested topics have higher exploration rates.
-        """
-        topic = self.classify_query(query)
-        if topic in self.topic_stats:
-            return self.topic_stats[topic].get("exploration_rate", 0.30)
-        return 0.50  # untested topics get high exploration
-
-    def get_dead_weight_topics(self) -> List[str]:
-        """Get topics with low proven uses (dead weight)."""
-        dead = []
-        for topic, stats in self.topic_stats.items():
-            if stats["total_queries"] < 5:
-                dead.append(topic)
-        return dead
-
-    def get_health_report(self) -> dict:
-        """Get a health report of the query memory system."""
-        total_queries = len(self.history)
-        topics = len(self.topic_stats)
-        dead_topics = len(self.get_dead_weight_topics())
-
-        return {
-            "total_queries": total_queries,
-            "topics_tracked": topics,
-            "dead_weight_topics": dead_topics,
-            "topic_stats": self.topic_stats,
-        }
+        })
 
 
 # ═══════════════════════════════════════════════════════════════════════════════

src/go/rune-entry/go.mod

@@ -0,0 +1,3 @@
+module rune-entry
+
+go 1.27.1

src/go/rune-entry/main.go

@@ -0,0 +1,172 @@
+// Command rune is the Go first-call entry for the Rune runtime (Phase H1).
+//
+// Directive (USER-LOCKED 2026-10-04): Go owns the front end — runtime entry
+// points, the first-call surface, user-facing calls. This binary is the
+// transitional first-call shim: it replicates the EXACT contract of the
+// deployed bash launcher (~/.local/bin/rune) — same cwd, same env, same
+// handoff — and exec-replaces itself with the Python runtime so exit codes
+// and signals pass through 1:1. The Python core shrinks behind this surface
+// as the back-end ports land.
+//
+// Contract (H1 canary, observed from the deployed launcher — not invented):
+//   cwd:       /mnt/workdrive/rune-code/current/src (the deployed revision)
+//   env:       RUNE_HOME=/mnt/workdrive/rune
+//              RUNE_MEMORY_DIR=/home/nick/.config/opencode/memory
+//              MIMO_PROBE_ENABLED=1
+//   handoff:   ~/.venvs/memory/bin/python3 -m rune [args...]
+//
+// Flags consumed by the Go layer (everything else passes through):
+//   --version     print "rune <version>" (deployed pyproject), exit 0
+//   --python-only print the resolved handoff command, exit 0
+//   --help        usage, exit 0
+//   unknown flag  usage on stderr, exit 2
+package main
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"syscall"
+)
+
+const usage = `rune — Go first-call entry (Phase H1 transitional shim)
+
+usage:
+  rune [args...]     hand off to the Python runtime (deployed revision)
+  rune serve         H2 front door: /v1 surface proxying the Python core
+  rune scaffold      R2 construction protocol initiation (Go start / Rust core)
+  rune --version     print the runtime version
+  rune --python-only print the resolved Python handoff command and exit
+  rune --help        this text
+
+Environment contract (same as the deployed bash launcher):
+  cwd              /mnt/workdrive/rune-code/current/src
+  RUNE_HOME        data home (stable across code deploys)
+  RUNE_MEMORY_DIR  memory dir
+  MIMO_PROBE_ENABLED=1
+Explicitly-set RUNE_HOME / RUNE_MEMORY_DIR in the ambient environment win.
+`
+
+const (
+	deployRoot    = "/mnt/workdrive/rune-code"
+	dataHome      = "/mnt/workdrive/rune"
+	defaultMemDir = "/home/nick/.config/opencode/memory"
+)
+
+// deployedSrc resolves the runtime source dir: the deployed current
+// revision when it exists (the launcher's authority), else the binary's own
+// repo checkout (development runs), else the desktop default.
+func deployedSrc() string {
+	current := filepath.Join(deployRoot, "current", "src")
+	if st, err := os.Stat(filepath.Join(current, "rune", "__main__.py")); err == nil && !st.IsDir() {
+		return current
+	}
+	if exe, err := os.Executable(); err == nil {
+		dir := filepath.Dir(exe)
+		for i := 0; i < 8; i++ {
+			cand := filepath.Join(dir, "src")
+			if st, err := os.Stat(filepath.Join(cand, "rune", "__main__.py")); err == nil && !st.IsDir() {
+				return cand
+			}
+			dir = filepath.Dir(dir)
+		}
+	}
+	return filepath.Join(dataHome, "src")
+}
+
+func version(srcDir string) string {
+	data, err := os.ReadFile(filepath.Join(filepath.Dir(srcDir), "pyproject.toml"))
+	if err != nil {
+		return "unknown"
+	}
+	const prefix = `version = "`
+	for _, line := range strings.Split(string(data), "\n") {
+		if rest, ok := strings.CutPrefix(line, prefix); ok {
+			if end := strings.IndexByte(rest, '"'); end > 0 {
+				return rest[:end]
+			}
+		}
+	}
+	return "unknown"
+}
+
+func pythonBin() string {
+	cand := filepath.Join(os.Getenv("HOME"), ".venvs", "memory", "bin", "python3")
+	if _, err := os.Stat(cand); err == nil {
+		return cand
+	}
+	return "python3"
+}
+
+func upsertEnv(env []string, key, val string) []string {
+	prefix := key + "="
+	for i, e := range env {
+		if strings.HasPrefix(e, prefix) {
+			env[i] = prefix + val
+			return env
+		}
+	}
+	return append(env, prefix+val)
+}
+
+func launchEnv(base []string) []string {
+	env := base
+	if os.Getenv("RUNE_HOME") == "" {
+		env = upsertEnv(env, "RUNE_HOME", dataHome)
+	}
+	if os.Getenv("RUNE_MEMORY_DIR") == "" {
+		env = upsertEnv(env, "RUNE_MEMORY_DIR", defaultMemDir)
+	}
+	env = upsertEnv(env, "MIMO_PROBE_ENABLED", "1")
+	return env
+}
+
+func main() {
+	args := os.Args[1:]
+	// H2: the front-door subcommand owns the /v1 surface (no Python handoff).
+	if len(args) > 0 && args[0] == "serve" {
+		os.Exit(runServe(args[1:]))
+	}
+	// R2 Wave 1: the scaffolding initiation surface (Go starts, Rust executes).
+	if len(args) > 0 && args[0] == "scaffold" {
+		os.Exit(runScaffold(args[1:]))
+	}
+	srcDir := deployedSrc()
+	for _, a := range args {
+		switch a {
+		case "--help", "-h":
+			fmt.Print(usage)
+			return
+		case "--version":
+			fmt.Printf("rune %s\n", version(srcDir))
+			return
+		case "--python-only":
+			fmt.Printf("(cd %s && %s -m rune %s)\n", srcDir, pythonBin(), strings.Join(args[1:], " "))
+			return
+		default:
+			if strings.HasPrefix(a, "-") {
+				fmt.Fprintf(os.Stderr, "rune: unknown flag %q\n\n%s", a, usage)
+				os.Exit(2)
+			}
+		}
+	}
+	argv := append([]string{pythonBin(), "-m", "rune"}, args...)
+	bin, err := exec.LookPath(argv[0])
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "rune: cannot find python runtime %q: %v\n", argv[0], err)
+		os.Exit(127)
+	}
+	env := launchEnv(os.Environ())
+	// chdir before exec: the launcher's cwd contract (the deployed src dir
+	// makes the rune package importable for `-m rune`).
+	if err := syscall.Chdir(srcDir); err != nil {
+		fmt.Fprintf(os.Stderr, "rune: cannot enter %s: %v\n", srcDir, err)
+		os.Exit(126)
+	}
+	if err := syscall.Exec(bin, argv, env); err != nil {
+		fmt.Fprintf(os.Stderr, "rune: handoff failed: %v\n", err)
+		os.Exit(126)
+	}
+}

src/go/rune-entry/main_test.go

@@ -0,0 +1,211 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+	"time"
+)
+
+func TestVersionReadsPyprojectBesideSrc(t *testing.T) {
+	root := t.TempDir()
+	if err := os.MkdirAll(filepath.Join(root, "src", "rune"), 0o755); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(root, "pyproject.toml"),
+		[]byte("[project]\nversion = \"0.99.1\"\n"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	if got := version(filepath.Join(root, "src")); got != "0.99.1" {
+		t.Fatalf("want 0.99.1, got %q", got)
+	}
+}
+
+func TestVersionUnknownWhenMissing(t *testing.T) {
+	if got := version("/nonexistent-src"); got != "unknown" {
+		t.Fatalf("missing root -> unknown, got %q", got)
+	}
+}
+
+func TestUpsertEnv(t *testing.T) {
+	env := []string{"A=1", "RUNE_HOME=/old"}
+	got := upsertEnv(env, "RUNE_HOME", "/new")
+	if got[1] != "RUNE_HOME=/new" {
+		t.Fatalf("existing key replaced, got %v", got)
+	}
+	got = upsertEnv([]string{"A=1"}, "B", "2")
+	if got[len(got)-1] != "B=2" || len(got) != 2 {
+		t.Fatalf("new key appended, got %v", got)
+	}
+}
+
+func TestLaunchEnvContract(t *testing.T) {
+	t.Setenv("RUNE_HOME", "")
+	t.Setenv("RUNE_MEMORY_DIR", "")
+	env := launchEnv(nil)
+	joined := strings.Join(env, "\n")
+	for _, want := range []string{
+		"RUNE_HOME=/mnt/workdrive/rune",
+		"RUNE_MEMORY_DIR=/home/nick/.config/opencode/memory",
+		"MIMO_PROBE_ENABLED=1",
+	} {
+		if !strings.Contains(joined, want) {
+			t.Fatalf("launch env missing %q\ngot:\n%s", want, joined)
+		}
+	}
+}
+
+func TestLaunchEnvHonorsExplicitOverrides(t *testing.T) {
+	t.Setenv("RUNE_HOME", "/tmp/custom-home")
+	env := launchEnv([]string{"RUNE_HOME=/tmp/custom-home"})
+	joined := strings.Join(env, "\n")
+	if !strings.Contains(joined, "RUNE_HOME=/tmp/custom-home") {
+		t.Fatalf("explicit RUNE_HOME must win, got:\n%s", joined)
+	}
+	if strings.Contains(joined, "RUNE_HOME=/mnt/workdrive/rune") {
+		t.Fatalf("default must NOT override explicit env, got:\n%s", joined)
+	}
+}
+
+func TestPythonBinFallsBack(t *testing.T) {
+	t.Setenv("HOME", "/nonexistent-home")
+	if got := pythonBin(); got != "python3" {
+		t.Fatalf("missing venv -> python3 on PATH, got %q", got)
+	}
+}
+
+func TestDeployedSrcPrefersLiveCurrent(t *testing.T) {
+	// The deployed current revision exists on this host (the launcher
+	// contract) — the shim must resolve to it, not to a dev checkout.
+	got := deployedSrc()
+	if !strings.HasPrefix(got, "/mnt/workdrive/rune-code/current") &&
+		!strings.Contains(got, "/src") {
+		t.Fatalf("deployed current must win, got %q", got)
+	}
+}
+
+// ── H2 front door (serve.go) ────────────────────────────────────────────────
+
+func TestServeHelpExitsZero(t *testing.T) {
+	if rc := runServe([]string{"--help"}); rc != 0 {
+		t.Fatalf("serve --help must exit 0, got %d", rc)
+	}
+}
+
+func TestServeUnknownFlagExitsTwo(t *testing.T) {
+	if rc := runServe([]string{"--bogus"}); rc != 2 {
+		t.Fatalf("unknown serve flag must exit 2, got %d", rc)
+	}
+}
+
+func TestFrontDoorNotFoundEnvelope(t *testing.T) {
+	f := &frontDoor{core: "http://127.0.0.1:1"}
+	req := httptest.NewRequest("GET", "/v1/nope", nil)
+	rec := httptest.NewRecorder()
+	f.mux().ServeHTTP(rec, req)
+	if rec.Code != http.StatusNotFound {
+		t.Fatalf("unknown route must 404, got %d", rec.Code)
+	}
+	var body map[string]map[string]string
+	if err := json.Unmarshal(rec.Body.Bytes(), &body); err != nil {
+		t.Fatalf("404 body must be the error envelope: %v", err)
+	}
+	if body["error"]["code"] != "not_found" {
+		t.Fatalf("404 code must be not_found, got %q", body["error"]["code"])
+	}
+}
+
+func TestFrontDoorCoreDownEnvelope(t *testing.T) {
+	// Nothing listening on port 1 — the proxy must answer 502
+	// core_unavailable, not hang and not 500.
+	f := &frontDoor{core: "http://127.0.0.1:1",
+		client: &http.Client{Timeout: 2 * time.Second}}
+	req := httptest.NewRequest("POST", "/v1/chat/completions",
+		strings.NewReader(`{"messages":[{"role":"user","content":"x"}]}`))
+	rec := httptest.NewRecorder()
+	f.mux().ServeHTTP(rec, req)
+	if rec.Code != http.StatusBadGateway {
+		t.Fatalf("core down must 502, got %d", rec.Code)
+	}
+	var body map[string]map[string]string
+	if err := json.Unmarshal(rec.Body.Bytes(), &body); err != nil {
+		t.Fatalf("502 body must be the error envelope: %v", err)
+	}
+	if body["error"]["code"] != "core_unavailable" {
+		t.Fatalf("502 code must be core_unavailable, got %q", body["error"]["code"])
+	}
+}
+
+func TestFrontDoorProxiesByteForByte(t *testing.T) {
+	// A canned upstream: the front door must pass status + body through
+	// verbatim (the H2 parity law in its strongest form).
+	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(http.StatusOK)
+		fmt.Fprint(w, `{"object":"list","data":[]}`)
+	}))
+	defer upstream.Close()
+	f := &frontDoor{core: upstream.URL, client: upstream.Client()}
+	req := httptest.NewRequest("GET", "/v1/models", nil)
+	rec := httptest.NewRecorder()
+	f.mux().ServeHTTP(rec, req)
+	if rec.Code != http.StatusOK {
+		t.Fatalf("proxy must pass status through, got %d", rec.Code)
+	}
+	if rec.Body.String() != `{"object":"list","data":[]}` {
+		t.Fatalf("proxy must pass the body byte-for-byte, got %q", rec.Body.String())
+	}
+}
+
+// ── R2 Wave 1: scaffold initiation surface ──────────────────────────────────
+
+func TestScaffoldHelpExitsZero(t *testing.T) {
+	if rc := runScaffold([]string{"--help"}); rc != 0 {
+		t.Fatalf("scaffold --help must exit 0, got %d", rc)
+	}
+}
+
+func TestScaffoldUnknownFlagExitsTwo(t *testing.T) {
+	if rc := runScaffold([]string{"--bogus"}); rc != 2 {
+		t.Fatalf("unknown scaffold flag must exit 2, got %d", rc)
+	}
+}
+
+func TestScaffoldCoreCallEnvelope(t *testing.T) {
+	// The membrane junction with a stub binary emitting a canned envelope.
+	dir := t.TempDir()
+	stub := filepath.Join(dir, "scaffold_core")
+	script := "#!/bin/sh\ncat >/dev/null\nprintf '%s\n' '{\"ok\":true,\"value\":{\"legal\":true}}'\n"
+	if err := os.WriteFile(stub, []byte(script), 0o755); err != nil {
+		t.Fatal(err)
+	}
+	env, err := scaffoldCoreCall(stub, "check_transition",
+		map[string]string{"current": "draft", "target": "approved"})
+	if err != nil {
+		t.Fatalf("stub junction failed: %v", err)
+	}
+	if env["ok"] != true {
+		t.Fatalf("envelope ok must be true, got %v", env)
+	}
+	value, _ := env["value"].(map[string]any)
+	if value["legal"] != true {
+		t.Fatalf("value.legal must be true, got %v", value)
+	}
+}
+
+func TestScaffoldCoreCallFailureSurfaces(t *testing.T) {
+	dir := t.TempDir()
+	stub := filepath.Join(dir, "scaffold_core")
+	script := "#!/bin/sh\nexit 3\n"
+	if err := os.WriteFile(stub, []byte(script), 0o755); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := scaffoldCoreCall(stub, "check_transition", map[string]string{}); err == nil {
+		t.Fatal("a failing core binary must surface an error, not a zero value")
+	}
+}

src/go/rune-entry/scaffold.go

@@ -0,0 +1,160 @@
+// scaffold.go — the scaffolding initiation surface (R2 Wave 1, contract
+// BUILDER-2026-10-04T15:25:33Z-cli). Go STARTS, Rust EXECUTES: pure
+// operations (check-transition, close-quality) go straight to the
+// scaffold_core binary over stdio NDJSON (the hybrid membrane's first
+// contracted junction); store-backed operations proxy to the Python engine
+// (whose own core is now Rust-delegated) until Wave 1's later slices port
+// the contract store.
+//
+// Stdlib only. The binary path resolves from SC_RUST_BIN, else the repo
+// crate target, else PATH.
+
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+)
+
+const scaffoldUsage = `rune scaffold — the construction protocol initiation surface (R2 Wave 1)
+
+usage:
+  rune scaffold check-transition <current> <target>   legality verdict (Rust core, direct)
+  rune scaffold close-quality <inputs.json>           closure buckets (Rust core, direct)
+  rune scaffold <op> [args...]                        store-backed ops proxy to the engine:
+                                                      submit-need, inspect-decision, scope,
+                                                      obligations, observe, verify, transition, close
+
+Go initiates; Rust executes the deterministic core; the Python engine
+carries store-backed operations during the transition (strangler law).
+`
+
+// scaffoldCoreBin resolves the scaffold_core CLI binary.
+func scaffoldCoreBin() string {
+	if p := os.Getenv("SC_RUST_BIN"); p != "" {
+		return p
+	}
+	if exe, err := os.Executable(); err == nil {
+		dir := filepath.Dir(exe)
+		for i := 0; i < 8; i++ {
+			cand := filepath.Join(dir, "src", "rust", "scaffold_core", "target", "release", "scaffold_core")
+			if st, err := os.Stat(cand); err == nil && !st.IsDir() {
+				return cand
+			}
+			dir = filepath.Dir(dir)
+		}
+	}
+	if p, err := exec.LookPath("scaffold_core"); err == nil {
+		return p
+	}
+	return ""
+}
+
+// scaffoldCoreCall runs one pure op through the Rust binary (NDJSON stdin
+// -> envelope stdout). The envelope contract is the doc-envelope law.
+func scaffoldCoreCall(bin, op string, arg any) (map[string]any, error) {
+	payload, err := json.Marshal(map[string]any{"op": op, "arg": arg})
+	if err != nil {
+		return nil, err
+	}
+	cmd := exec.Command(bin)
+	cmd.Stdin = bytes.NewReader(payload)
+	var out bytes.Buffer
+	cmd.Stdout = &out
+	cmd.Stderr = os.Stderr
+	if err := cmd.Run(); err != nil {
+		return nil, fmt.Errorf("scaffold_core %s failed: %w", op, err)
+	}
+	var env map[string]any
+	if err := json.Unmarshal(out.Bytes(), &env); err != nil {
+		return nil, fmt.Errorf("scaffold_core %s returned non-JSON: %w", op, err)
+	}
+	return env, nil
+}
+
+// scaffoldProxy hands a store-backed op to the Python engine (the
+// transitional membrane — the engine's core is Rust-backed already).
+func scaffoldProxy(args []string) int {
+	py := pythonBin()
+	argv := append([]string{py, "-m", "rune.construction_interface"}, args...)
+	cmd := exec.Command(argv[0], argv[1:]...)
+	cmd.Dir = deployedSrc()
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	cmd.Stdin = os.Stdin
+	env := launchEnv(os.Environ())
+	cmd.Env = env
+	if err := cmd.Run(); err != nil {
+		fmt.Fprintf(os.Stderr, "rune scaffold: engine call failed: %v\n", err)
+		return 1
+	}
+	return 0
+}
+
+// runScaffold implements `rune scaffold`. Returns the process exit code.
+func runScaffold(args []string) int {
+	if len(args) == 0 || args[0] == "--help" || args[0] == "-h" {
+		fmt.Print(scaffoldUsage)
+		return 0
+	}
+	switch args[0] {
+	case "check-transition":
+		if len(args) != 3 {
+			fmt.Fprintln(os.Stderr, "usage: rune scaffold check-transition <current> <target>")
+			return 2
+		}
+		bin := scaffoldCoreBin()
+		if bin == "" {
+			fmt.Fprintln(os.Stderr, "rune scaffold: scaffold_core binary not found (build the crate)")
+			return 127
+		}
+		env, err := scaffoldCoreCall(bin, "check_transition",
+			map[string]string{"current": args[1], "target": args[2]})
+		if err != nil {
+			fmt.Fprintln(os.Stderr, "rune scaffold:", err)
+			return 1
+		}
+		out, _ := json.Marshal(env)
+		fmt.Println(string(out))
+		return 0
+	case "close-quality":
+		if len(args) != 2 {
+			fmt.Fprintln(os.Stderr, "usage: rune scaffold close-quality <inputs.json>")
+			return 2
+		}
+		raw, err := os.ReadFile(args[1])
+		if err != nil {
+			fmt.Fprintln(os.Stderr, "rune scaffold: cannot read inputs:", err)
+			return 2
+		}
+		var inputs any
+		if err := json.Unmarshal(raw, &inputs); err != nil {
+			fmt.Fprintln(os.Stderr, "rune scaffold: inputs are not JSON:", err)
+			return 2
+		}
+		bin := scaffoldCoreBin()
+		if bin == "" {
+			fmt.Fprintln(os.Stderr, "rune scaffold: scaffold_core binary not found (build the crate)")
+			return 127
+		}
+		env, err := scaffoldCoreCall(bin, "close_quality", inputs)
+		if err != nil {
+			fmt.Fprintln(os.Stderr, "rune scaffold:", err)
+			return 1
+		}
+		out, _ := json.Marshal(env)
+		fmt.Println(string(out))
+		return 0
+	default:
+		if strings.HasPrefix(args[0], "-") {
+			fmt.Fprintf(os.Stderr, "rune scaffold: unknown flag %q\n\n%s", args[0], scaffoldUsage)
+			return 2
+		}
+		return scaffoldProxy(args)
+	}
+}

src/go/rune-entry/serve.go

@@ -0,0 +1,173 @@
+// serve.go — H2 front door (T4.3, contract BUILDER-2026-10-04T08:32:43Z-cli).
+//
+// Go owns the front end (USER-LOCKED directive): this subcommand serves the
+// OpenAI-compatible /v1 surface on 127.0.0.1 and proxies to the Python core
+// sidecar (core_server.py) during the transition. Parity law: response
+// bodies pass through byte-for-byte (the canary compares against the Python
+// server modulo volatile id/created), and locally-generated errors use the
+// same envelope the core emits: {"error": {"code", "message"}}.
+//
+// Stdlib only (net/http, io) — the plan's "stdlib net/http + NDJSON" line.
+
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"strings"
+	"time"
+)
+
+const serveUsage = `rune serve — H2 front door (OpenAI-compatible /v1 surface)
+
+usage:
+  rune serve [--port N] [--core URL]
+
+flags:
+  --port N     listen port on 127.0.0.1 (default 8377)
+  --core URL   Python core sidecar base URL (default http://127.0.0.1:8376)
+
+Endpoints (identical shapes to the core — the parity battery enforces it):
+  GET  /v1/models
+  GET  /v1/status
+  POST /v1/chat/completions   stream=true → NDJSON chunk lines
+`
+
+type frontDoor struct {
+	core   string
+	client *http.Client
+}
+
+// errorEnvelope mirrors core_server._envelope_error exactly.
+func errorEnvelope(w http.ResponseWriter, status int, code, message string) {
+	body, _ := json.Marshal(map[string]any{
+		"error": map[string]string{"code": code, "message": message},
+	})
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(status)
+	_, _ = w.Write(body)
+}
+
+// proxy forwards one request to the core and streams the response back
+// verbatim — byte-parity with the Python server is the H2 contract, and a
+// pure pass-through is the strongest form of it.
+func (f *frontDoor) proxy(w http.ResponseWriter, r *http.Request) {
+	var body io.Reader
+	if r.Body != nil {
+		raw, err := io.ReadAll(r.Body)
+		if err != nil {
+			errorEnvelope(w, http.StatusBadRequest, "bad_request", "unreadable body")
+			return
+		}
+		body = bytes.NewReader(raw)
+	}
+	req, err := http.NewRequest(r.Method, f.core+r.URL.Path, body)
+	if err != nil {
+		errorEnvelope(w, http.StatusBadRequest, "bad_request", err.Error())
+		return
+	}
+	req.Header.Set("Content-Type", r.Header.Get("Content-Type"))
+	resp, err := f.client.Do(req)
+	if err != nil {
+		errorEnvelope(w, http.StatusBadGateway, "core_unavailable",
+			"core sidecar unreachable: "+err.Error())
+		return
+	}
+	defer resp.Body.Close()
+	for k, vs := range resp.Header {
+		if strings.EqualFold(k, "Content-Type") {
+			w.Header().Set(k, vs[0])
+		}
+	}
+	w.WriteHeader(resp.StatusCode)
+	// NDJSON streaming: flush per write so chunk lines reach the caller as
+	// the core emits them (the framing is the contract).
+	flusher, canFlush := w.(http.Flusher)
+	buf := make([]byte, 4096)
+	for {
+		n, readErr := resp.Body.Read(buf)
+		if n > 0 {
+			if _, werr := w.Write(buf[:n]); werr != nil {
+				return
+			}
+			if canFlush {
+				flusher.Flush()
+			}
+		}
+		if readErr != nil {
+			return
+		}
+	}
+}
+
+func (f *frontDoor) mux() *http.ServeMux {
+	mux := http.NewServeMux()
+	handle := func(path string) {
+		mux.HandleFunc(path, func(w http.ResponseWriter, r *http.Request) {
+			if r.URL.Path != path {
+				errorEnvelope(w, http.StatusNotFound, "not_found",
+					"no route "+r.URL.Path)
+				return
+			}
+			f.proxy(w, r)
+		})
+	}
+	handle("/v1/models")
+	handle("/v1/status")
+	handle("/v1/chat/completions")
+	// H4 slice 1: the TUI endpoints (same pass-through law).
+	handle("/v1/conversation")
+	handle("/v1/approvals/resolve")
+	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		errorEnvelope(w, http.StatusNotFound, "not_found", "no route "+r.URL.Path)
+	})
+	return mux
+}
+
+// runServe implements `rune serve`. Returns the process exit code.
+func runServe(args []string) int {
+	port := 8377
+	core := "http://127.0.0.1:8376"
+	for i := 0; i < len(args); i++ {
+		switch args[i] {
+		case "--help", "-h":
+			fmt.Print(serveUsage)
+			return 0
+		case "--port":
+			if i+1 >= len(args) {
+				fmt.Fprintln(os.Stderr, "rune serve: --port needs a value")
+				return 2
+			}
+			i++
+			if _, err := fmt.Sscanf(args[i], "%d", &port); err != nil {
+				fmt.Fprintf(os.Stderr, "rune serve: bad --port %q\n", args[i])
+				return 2
+			}
+		case "--core":
+			if i+1 >= len(args) {
+				fmt.Fprintln(os.Stderr, "rune serve: --core needs a value")
+				return 2
+			}
+			i++
+			core = strings.TrimSuffix(args[i], "/")
+		default:
+			fmt.Fprintf(os.Stderr, "rune serve: unknown flag %q\n\n%s", args[i], serveUsage)
+			return 2
+		}
+	}
+	f := &frontDoor{
+		core:   core,
+		client: &http.Client{Timeout: 130 * time.Second},
+	}
+	addr := fmt.Sprintf("127.0.0.1:%d", port)
+	fmt.Printf("rune front door on %s (core %s)\n", addr, core)
+	if err := http.ListenAndServe(addr, f.mux()); err != nil {
+		fmt.Fprintf(os.Stderr, "rune serve: %v\n", err)
+		return 1
+	}
+	return 0
+}

src/rune/__init__.py

@@ -6,7 +6,7 @@ This is the main entry point for the Rune program.
 import json
 from pathlib import Path
 
-__version__ = "0.89.0"
+__version__ = "0.99.6"
 
 # One build identity (handoff 2026-09-10 §4): the semantic version above is
 # the repo-level truth (auto-bumped at merge); the DEPLOYED revision (exact

src/rune/abstraction.py

@@ -43,6 +43,42 @@ LOCAL_MODEL = "qwen2.5:3b"
 OLLAMA_URL = os.environ.get("OLLAMA_URL", "http://localhost:11434")
 
 
+_ABSTRACTION_STOPWORDS_FROZEN = frozenset(
+    "the a an is are was were be been being have has had do does did will "
+    "would could should may might shall can to of in for on with at by from "
+    "as into through during before after this that these those it its what "
+    "which who how when where why and or but not no".split()
+)
+
+
+def _ABSTRACTION_STOPWORDS() -> list:
+    """Gather seam (W3.4): the fact-extraction stopword table as a sorted
+    list — data received by the kernel; identical filter on both engines."""
+    return sorted(_ABSTRACTION_STOPWORDS_FROZEN)
+
+
+def _core():
+    """The Rust cognition_core when available (strangler: Python fallback
+    load-bearing). RUNE_COGNITION_CORE=python pins the fallback."""
+    return None if cc_loader_pin() else _cc_probe()
+
+
+def _cc_probe():
+    from rune import cc_loader as _cl
+    try:
+        return _cl if _cl.available() else None
+    except Exception:  # noqa: BLE001, S110 — loader probe never crashes the fallback
+        return None
+
+
+def cc_loader_pin() -> bool:
+    """The env pin: RUNE_COGNITION_CORE=python → kernels OFF (shared probe).
+"""
+    import os
+
+    return os.environ.get("RUNE_COGNITION_CORE", "auto") == "python"
+
+
 def _now():
     return datetime.now(timezone.utc).isoformat()
 
@@ -241,17 +277,41 @@ Extract 1-5 key facts. Be precise, not verbose."""
         response = llm_call(prompt, max_tokens=800)
 
         # Parse response
+        facts: list = []
         try:
             # Try to extract JSON from response
             start = response.find("[")
             end = response.rfind("]") + 1
             if start >= 0 and end > start:
                 facts = json.loads(response[start:end])
-            else:
-                facts = []
         except json.JSONDecodeError:
             facts = []
 
+        # LLM unavailable / unparseable → DETERMINISTIC KERNEL FALLBACK
+        # (W3.4: cc_abstraction_extract_facts — sentence split, stopwords
+        # filtered, min-length gate; the same facts schema it already emits:
+        # text/words/content_words mapped onto what= text with empty dims).
+        if not facts:
+            core = _core()
+            if core is not None:
+                try:
+                    from rune import cc_loader as _cl
+
+                    raw = _cl.abstraction_extract_facts(
+                        episode_text, _ABSTRACTION_STOPWORDS(), 10)
+                    for item in raw or []:
+                        text_frag = str(item.get("text", "")).strip()
+                        if not text_frag:
+                            continue
+                        facts.append({
+                            "what": text_frag, "when": "", "where": "", "who": "",
+                            "why": "", "type": "experience", "entities": [],
+                            "kernel": True,
+                            "content_words": item.get("content_words"),
+                        })
+                except Exception:  # noqa: BLE001, S110 — kernel failure degrades to empty, intentional silence
+                    pass
+
         if not facts:
             return {"extracted": 0, "error": "LLM did not return valid JSON", "raw": response[:200]}
 

src/rune/behavior.py

@@ -15,6 +15,17 @@ Usage:
     behavior.py reinforce <id> [--outcome success|failure]
     behavior.py list [--type correction|habit|all]
     behavior.py stats
+
+Phase G strangler slice 2 (port 5): the decision math (reinforce
+counting/confidence/promotion/state formulas) is served IN-PROCESS by the
+Rust `evidence_provenance` cdylib through ep_loader.py. STORAGE STAYS
+PYTHON — SQLite I/O and the regex matching layer remain here (the crate is
+zero-dep by design; hand-rolling SQLite/regex would be hubris, not
+hardening). Vintage upgrade per the frozen contract §2: this module is the
+src/rune authority vintage; the deployed ~/.config/opencode/scripts copy
+is superseded by the same shim shape pointing at the live db path.
+Timestamps are pinned by the shim (`now`) — the core is deterministic.
+API, CLI, and PLUGIN shapes unchanged (git history holds the original).
 """
 
 import json
@@ -24,6 +35,12 @@ import sqlite3
 import sys
 from datetime import datetime, timezone
 
+# ── Rust core wiring (slice-2 port-5 shim pattern) ──────────────────────────
+_CRATE_DIR = "/mnt/workdrive/rune/src/rust/evidence_provenance"
+if _CRATE_DIR not in sys.path:
+    sys.path.insert(0, _CRATE_DIR)
+import ep_loader  # noqa: E402  (loads target/release cdylib)
+
 sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
 import memory_env
 
@@ -194,7 +211,10 @@ def match_context(context, match_type=None):
 
 
 def reinforce(item_id, outcome, item_type="habit"):
-    """Reinforce a correction or habit based on outcome."""
+    """Reinforce a correction or habit based on outcome.
+
+    Decision math (counting, confidence formula, promotion, state) served
+    by the Rust core; SQL stays here."""
     db = connect()
     try:
         ts = _now()
@@ -204,28 +224,14 @@ def reinforce(item_id, outcome, item_type="habit"):
             if not habit:
                 return {"error": f"Habit {item_id} not found"}
 
-            new_count = habit["activation_count"] + 1
-            new_success = habit["success_count"] + (1 if outcome == "success" else 0)
-            new_failure = habit["failure_count"] + (1 if outcome == "failure" else 0)
-
-            # Update confidence based on success rate
-            if new_count > 0:
-                success_rate = new_success / new_count
-                new_confidence = min(1.0, 0.5 + success_rate * 0.5)
-            else:
-                new_confidence = habit["confidence"]
-
-            # Promote from candidate to active if enough activations
-            new_state = habit["state"]
-            if habit["state"] == "candidate" and new_count >= habit["min_activations"]:
-                new_state = "active"
-
+            upd = ep_loader.habit_reinforce(dict(habit), outcome)
             db.execute(
                 """
                 UPDATE habits SET activation_count=?, success_count=?, failure_count=?,
                 confidence=?, state=?, last_activated=? WHERE id=?
             """,
-                (new_count, new_success, new_failure, new_confidence, new_state, ts, item_id),
+                (upd["activation_count"], upd["success_count"], upd["failure_count"],
+                 upd["confidence"], upd["state"], ts, item_id),
             )
 
             # Log activation
@@ -238,33 +244,23 @@ def reinforce(item_id, outcome, item_type="habit"):
             )
 
             db.commit()
-            return {"reinforced": item_id, "confidence": new_confidence, "state": new_state}
+            return {"reinforced": item_id, "confidence": upd["confidence"], "state": upd["state"]}
 
         else:  # correction
             correction = db.execute("SELECT * FROM corrections WHERE id=?", (item_id,)).fetchone()
             if not correction:
                 return {"error": f"Correction {item_id} not found"}
 
-            if outcome == "success":
-                new_confidence = min(1.0, correction["confidence"] + 0.1)
-                new_count = correction["evidence_count"] + 1
-            elif outcome == "failure":
-                new_confidence = max(0.0, correction["confidence"] - 0.3)
-                new_count = correction["evidence_count"]
-            else:
-                new_confidence = correction["confidence"]
-                new_count = correction["evidence_count"]
-
-            new_state = "active" if new_confidence > 0.3 else "archived"
+            upd = ep_loader.correction_reinforce(dict(correction), outcome)
             db.execute(
                 """
                 UPDATE corrections SET confidence=?, evidence_count=?, state=?, last_reinforced=?
                 WHERE id=?
             """,
-                (new_confidence, new_count, new_state, ts, item_id),
+                (upd["confidence"], upd["evidence_count"], upd["state"], ts, item_id),
             )
             db.commit()
-            return {"reinforced": item_id, "confidence": new_confidence, "state": new_state}
+            return {"reinforced": item_id, "confidence": upd["confidence"], "state": upd["state"]}
     finally:
         db.close()
 
@@ -408,4 +404,4 @@ PLUGIN = {
     "provides": ["behavior"],
     "priority": 50,
     "auto_activate": True,
-}
+}

src/rune/behaviour_ledger.py

@@ -16,12 +16,29 @@ dependencies changed are invalidated; every invalidation carries a
 reason; unrelated hardened confirmations are preserved.
 
 Storage: <project_store>/behaviour_ledger.json (versioned document).
+
+Phase G strangler slice 2 (port 4): the state machine (define / get /
+transitions / selective invalidation / queues / summary) is served
+IN-PROCESS by the Rust `evidence_provenance` cdylib through ep_loader.py
+— parity 13/13 proven vs this module's Python vintage (full-scenario
+doc parity, byte-equal error messages, save render indent=1 sort_keys).
+File glue (load/save) stays Python; timestamps are pinned by this shim
+(`now`) so the core stays deterministic. State constants and class API
+unchanged (git history holds the original).
 """
 from __future__ import annotations
 
+import json
+import sys
 import time
 from pathlib import Path
 
+# ── Rust core wiring (slice-2 port-4 shim pattern) ──────────────────────────
+_CRATE_DIR = "/mnt/workdrive/rune/src/rust/evidence_provenance"
+if _CRATE_DIR not in sys.path:
+    sys.path.insert(0, _CRATE_DIR)
+import ep_loader  # noqa: E402  (loads target/release cdylib)
+
 LEDGER_SCHEMA_VERSION = 1
 
 # hardening lifecycle (rule 19G semantics)
@@ -56,13 +73,11 @@ class BehaviourLedger:
 
     def _load(self) -> dict:
         if self.path.is_file():
-            import json
             return json.loads(self.path.read_text())
         return {"schema_version": LEDGER_SCHEMA_VERSION,
                 "behaviours": {}, "updated_at": _now()}
 
     def save(self) -> None:
-        import json
         self.doc["updated_at"] = _now()
         self.path.parent.mkdir(parents=True, exist_ok=True)
         self.path.write_text(json.dumps(self.doc, indent=1, sort_keys=True))
@@ -77,66 +92,34 @@ class BehaviourLedger:
                dependencies: list[str] | None = None,
                automated_ref: str = "",
                environment: str = "") -> dict:
-        bid = (behaviour_id if behaviour_id.startswith("behaviour:")
-               else f"behaviour:{behaviour_id}")
-        if bid in self.doc["behaviours"]:
-            raise ValueError(f"behaviour exists: {bid}")
-        rec = {
-            "behaviour_id": bid,
-            "owning_project": owning_project,
-            "intended_behaviour": intended_behaviour,
-            "origin_intent": origin_intent,
-            "pass_criteria": pass_criteria,
-            "fail_criteria": fail_criteria,
-            "procedure": procedure,
-            "owner_component": owner_component,   # structural entity id
-            "dependencies": list(dependencies or []),  # structural ids
-            "automated_ref": automated_ref,
-            "environment": environment,
-            "state": UNVALIDATED,
-            "evidence": [],           # [{at, generation, kind, detail}]
-            "history": [],            # every state transition, never lost
-            "invalidations": [],      # [{at, generation, because}]
-            "limitations": [],
-            "created_at": _now(),
-            "updated_at": _now(),
-        }
-        self.doc["behaviours"][bid] = rec
+        self.doc, rec = ep_loader.bl_define(
+            self.doc, behaviour_id=behaviour_id,
+            owning_project=owning_project,
+            intended_behaviour=intended_behaviour,
+            origin_intent=origin_intent,
+            pass_criteria=pass_criteria,
+            fail_criteria=fail_criteria,
+            procedure=procedure,
+            owner_component=owner_component,
+            dependencies=dependencies,
+            automated_ref=automated_ref,
+            environment=environment,
+            now=_now())
         return rec
 
     def get(self, behaviour_id: str) -> dict | None:
-        return self.doc["behaviours"].get(
-            behaviour_id if behaviour_id.startswith("behaviour:")
-            else f"behaviour:{behaviour_id}")
+        return ep_loader.bl_get(self.doc, behaviour_id)
 
     # -- state transitions (all recorded in history — rule 19G) -------------
 
-    def _transition(self, rec: dict, new_state: str, *, kind: str,
-                    detail: str = "", generation: str = "") -> None:
-        if new_state not in STATES:
-            raise ValueError(f"unknown validation state {new_state!r}")
-        rec["history"].append({
-            "at": _now(), "from": rec["state"], "to": new_state,
-            "kind": kind, "detail": detail[:200],
-            "generation": generation})
-        rec["state"] = new_state
-        rec["updated_at"] = _now()
-
     def record_auto_verification(self, behaviour_id: str, *,
                                  passed: bool, detail: str = "",
                                  generation: str = "") -> dict:
         """Automated verification. GREEN NEVER IMPLIES USER_CONFIRMED
         (rule 19W-22): the ceiling here is AUTO_VERIFIED."""
-        rec = self.get(behaviour_id)
-        if rec is None:
-            raise ValueError(f"unknown behaviour {behaviour_id!r}")
-        rec["evidence"].append({"at": _now(), "kind": "automated",
-                                "passed": passed,
-                                "detail": detail[:200],
-                                "generation": generation})
-        self._transition(rec, AUTO_VERIFIED if passed else TEST_FAILED,
-                         kind="automated_verification", detail=detail,
-                         generation=generation)
+        self.doc, rec = ep_loader.bl_record_auto(
+            self.doc, behaviour_id, passed=passed, detail=detail,
+            generation=generation, now=_now())
         return rec
 
     def record_real_world(self, behaviour_id: str, *, passed: bool,
@@ -144,32 +127,16 @@ class BehaviourLedger:
                           confirmed_by: str = "user") -> dict:
         """Real-world/manual test result (testing mode). USER_CONFIRMED
         requires an explicit confirmed_by='user' pass (rule 19M)."""
-        rec = self.get(behaviour_id)
-        if rec is None:
-            raise ValueError(f"unknown behaviour {behaviour_id!r}")
-        rec["evidence"].append({"at": _now(), "kind": "real_world",
-                                "passed": passed,
-                                "detail": detail[:200],
-                                "generation": generation,
-                                "by": confirmed_by})
-        if passed:
-            state = (USER_CONFIRMED if confirmed_by == "user"
-                     else REAL_WORLD_PASSED)
-        else:
-            state = TEST_FAILED
-        self._transition(rec, state, kind="real_world", detail=detail,
-                         generation=generation)
+        self.doc, rec = ep_loader.bl_record_real_world(
+            self.doc, behaviour_id, passed=passed, detail=detail,
+            generation=generation, confirmed_by=confirmed_by, now=_now())
         return rec
 
     def accept_limitation(self, behaviour_id: str, *, note: str,
                           approved_by: str = "user") -> dict:
-        rec = self.get(behaviour_id)
-        if rec is None:
-            raise ValueError(f"unknown behaviour {behaviour_id!r}")
-        rec["limitations"].append({"at": _now(), "note": note[:200],
-                                   "approved_by": approved_by})
-        self._transition(rec, ACCEPTED_LIMITATION, kind="accept_limitation",
-                         detail=note, )
+        self.doc, rec = ep_loader.bl_accept_limitation(
+            self.doc, behaviour_id, note=note,
+            approved_by=approved_by, now=_now())
         return rec
 
     # -- selective invalidation (rule 19I) -----------------------------------
@@ -182,44 +149,15 @@ class BehaviourLedger:
         structural dependencies intersect the changed closure. Every
         invalidation carries a reason; unrelated confirmations stay.
         Returns the invalidated records."""
-        reasons = reasons or {}
-        invalidated = []
-        for rec in self.doc["behaviours"].values():
-            if rec["state"] not in CONFIRMED_STATES:
-                continue
-            overlap = set(rec.get("dependencies") or []) & changed_entities
-            if rec.get("owner_component") in changed_entities:
-                overlap.add(rec["owner_component"])
-            if not overlap:
-                continue  # unrelated hardened behaviour: PRESERVED (19S-5)
-            because = reasons.get(
-                rec["behaviour_id"],
-                f"structural change touched: {sorted(overlap)}")
-            rec["invalidations"].append({
-                "at": _now(), "generation": generation,
-                "because": because[:200],
-                "was": rec["state"],
-                "changed_entities": sorted(overlap)})
-            # HISTORY IS PRESERVED — prior confirmation stays queryable
-            self._transition(rec, RETEST_REQUIRED,
-                             kind="selective_invalidation",
-                             detail=f"was {rec['state']}; {because}",
-                             generation=generation)
-            invalidated.append(rec)
-        return invalidated
+        self.doc, recs = ep_loader.bl_invalidate(
+            self.doc, changed_entities=sorted(changed_entities),
+            generation=generation, reasons=reasons, now=_now())
+        return recs
 
     def retest_history(self, behaviour_id: str) -> list[dict]:
         """Generation-aware history: all confirmations + invalidations
         for one behaviour, oldest first (rule 19S-12)."""
-        rec = self.get(behaviour_id)
-        if rec is None:
-            return []
-        events = []
-        for h in rec["history"]:
-            events.append({"at": h["at"], "generation": h.get("generation"),
-                           "event": f"{h['from']}→{h['to']}",
-                           "kind": h["kind"], "detail": h.get("detail", "")})
-        return events
+        return ep_loader.bl_retest_history(self.doc, behaviour_id)
 
     # -- queue (testing mode, 19L/M) ------------------------------------------
 
@@ -228,24 +166,8 @@ class BehaviourLedger:
         """Eligible testing items: anything not confirmed/accepted/n.a.
         Dynamic — the queue re-derives from states after every fix
         (rule 19M)."""
-        out = []
-        for rec in self.doc["behaviours"].values():
-            if rec["state"] in (USER_CONFIRMED, ACCEPTED_LIMITATION,
-                                NOT_APPLICABLE):
-                continue
-            if project and rec.get("owning_project") != project:
-                continue
-            if component and rec.get("owner_component") != component:
-                continue
-            out.append(rec)
-        out.sort(key=lambda r: (0 if r["state"] == TEST_FAILED else 1,
-                                r["behaviour_id"]))
-        return out
+        return ep_loader.bl_outstanding(
+            self.doc, component=component or "", project=project or "")
 
     def summary(self) -> dict:
-        counts: dict[str, int] = {}
-        for rec in self.doc["behaviours"].values():
-            counts[rec["state"]] = counts.get(rec["state"], 0) + 1
-        return {"total": len(self.doc["behaviours"]),
-                "states": counts,
-                "outstanding": len(self.outstanding())}
+        return ep_loader.bl_summary(self.doc)

src/rune/canary_audit_ledger.py

@@ -0,0 +1,540 @@
+#!/usr/bin/env python3
+"""canary_audit_ledger.py — Python canary for slice-2 ports 1-6.
+
+Slice-1 PASS/FAIL discipline (counter harness, exit 1 on any FAIL), pinned to
+the FROZEN CONTRACT /mnt/workdrive/rune/plans/2026-10-03-phase-g-evidence-provenance-contract.md:
+§5 requires the canary pair to carry per-port sections for ALL SIX ports.
+
+DUAL-MODE LAW (added 2026-10-03 after run 18141 went red): sections 2/3/4/5
+pin the LIVE promotion ledger when it exists in this process's HOME (desktop
+runs — the drift-key pin is the §3 linchpin). Under CI's sandboxed HOME the
+ledger file does not exist, so the same sections run an ISOLATED battery
+against the sandboxed ledger with count expectations re-derived from the
+seeded entries — identical test count, identical shapes, honest MODE print.
+The artifact coupling is disclosed, not hidden: the Rust binary + cdylib
+resolve to the checkout's own target/release/ (CI's host-executor topology
+makes the desktop build visible; if they ever go missing, ep_loader raises
+and this canary FAILS LOUDLY rather than testing nothing).
+
+Canary expectations are OBSERVED, not invented:
+- Deployed shim head + verify_chain() on the live 23-entry ledger:
+  {'valid': True, 'entries': 23, 'reason': 'chain intact'} (observed 2026-10-03).
+- verify_chain() return shape is a 3-key dict, no tuple unpacking.
+- Deployed SECRET_KEY default: 'rune-drift-integrity-2024' (the live-chain key).
+- Empty-ledger contract: missing ledger file -> valid-and-empty dict.
+- Shadow battery (18/18 GREEN, banked): read/write/CLI-error shapes all match
+  the old vintage at the shim.
+
+Run under ~/.venvs/memory/bin/python3.
+"""
+
+import os
+import sys
+
+sys.path.insert(0, "/home/nick/.config/opencode/scripts")
+
+# Repo-derived roots (no /mnt/workdrive hardcodes): this file lives in
+# src/rune/, so the crate is two parents up plus src/rust/evidence_provenance.
+_REPO = os.path.abspath(os.path.join(os.path.dirname(os.path.abspath(__file__)), "..", ".."))
+_CRATE_DIR = os.path.join(_REPO, "src", "rust", "evidence_provenance")
+if os.environ.get("EP_RUST_LIB"):
+    # CI: the build step emits to a runner-owned /tmp target dir and the job
+    # points EP_RUST_LIB at the cdylib FILE (that's the form ep_loader's
+    # override takes). The binary lives next to it.
+    _BIN = os.path.join(os.path.dirname(os.environ["EP_RUST_LIB"]),
+                        "evidence_provenance")
+else:
+    _BIN = os.path.join(_CRATE_DIR, "target", "release", "evidence_provenance")
+
+# Dual-mode switch (DUAL-MODE LAW in the docstring): LIVE when this process's
+# HOME carries the real promotion ledger AND we are not inside the CI sandbox.
+# The discriminator is the repo's own CI-sandbox convention — the workflow sets
+# RUNE_HOME=/tmp/rune-ci-<run_id> and its cleanup guard matches /tmp/rune-ci-*
+# exactly. File EXISTENCE is NOT a valid discriminator: run 18141's shim writes
+# left a zombie 1-entry ledger in the runner's persistent HOME, which would
+# flip a naive isfile() gate to LIVE with the wrong data (proven 2026-10-03
+# on run 18161: "entries >= 23 — got 1").
+_LIVE_LEDGER = os.path.expanduser("~/.config/opencode/memory/promotion_ledger.jsonl")
+_IN_CI_SANDBOX = os.environ.get("RUNE_HOME", "").startswith("/tmp/rune-ci-")
+LIVE = os.path.isfile(_LIVE_LEDGER) and not _IN_CI_SANDBOX
+
+PASS = 0
+FAIL = 0
+
+
+def test(name, condition, detail=""):
+    global PASS, FAIL
+    if condition:
+        PASS += 1
+        print(f"  ✓ {name}")
+    else:
+        FAIL += 1
+        print(f"  ✗ {name} — {detail}")
+
+
+def main():
+    global PASS, FAIL
+
+    print("=== AUDIT LEDGER CANARY (slice-2 ports 1-6) ===")
+    print(f"MODE: {'LIVE (deployed surface + live ledger)' if LIVE else 'ISOLATED (sandboxed ledger — CI mode)'}\n")
+
+    bin_home = None  # binary HOME override for §5 in ISOLATED mode
+
+    # --- 1. Deployed module surface ---
+    print("--- 1. Deployed module surface ---")
+    try:
+        import audit_ledger
+
+        test("audit_ledger imports (deployed shim)", True)
+        for name in (
+            "_compute_hash",
+            "append_entry",
+            "verify_chain",
+            "get_entries",
+            "log_promotion",
+            "log_gate_result",
+            "log_drift_alert",
+            "main",
+        ):
+            test(f"has {name}", hasattr(audit_ledger, name))
+        test("LEDGER_FILE is the live ledger path",
+             audit_ledger.LEDGER_FILE ==
+             os.path.expanduser("~/.config/opencode/memory/promotion_ledger.jsonl"),
+             f"got {audit_ledger.LEDGER_FILE}")
+        test("SECRET_KEY default is the drift key (live-chain key)",
+             audit_ledger.SECRET_KEY == "rune-drift-integrity-2024",
+             f"got {audit_ledger.SECRET_KEY}")
+    except Exception as e:  # noqa: BLE001 — canary battery law: a failed probe is a FAIL test, not a crash
+        test("audit_ledger module", False, str(e))
+        print(f"CANARY ABORT: import failed — {e}")
+        sys.exit(1)
+
+    # --- 2. Ledger verification through the shim (live on desktop / isolated in CI) ---
+    print("\n--- 2. Ledger verification ---")
+    if not LIVE:
+        # Seed a PER-RUN isolated ledger (never the runner's persistent HOME —
+        # leftover writes there are what poisoned run 18161's mode detection):
+        # point the shim's module-level LEDGER_FILE at a temp path; all §2/§3/§4
+        # reads/writes then land in the temp file. Binary §5 gets HOME=<temp>.
+        # Placed AFTER §1 so the surface pins observe the shim's DEFAULT
+        # resolution before the override.
+        import tempfile as _tf
+
+        bin_home = _tf.mkdtemp(prefix="alcanary_home_")
+        iso_ledger = os.path.join(bin_home, ".config", "opencode", "memory",
+                                  "promotion_ledger.jsonl")
+        os.makedirs(os.path.dirname(iso_ledger), exist_ok=True)
+        audit_ledger.LEDGER_FILE = iso_ledger
+        for seed_id in (9001, 9002):
+            audit_ledger.append_entry("promotion", seed_id,
+                                      {"reason": "canary-ci-seed", "old_status": "a",
+                                       "new_status": "b", "wash_count": 1})
+    try:
+        result = audit_ledger.verify_chain()
+        test("verify_chain() returns dict", isinstance(result, dict), f"got {type(result)}")  # type: ignore[reportUnnecessaryIsInstance]
+        test("valid is True on the chain", result.get("valid") is True,
+             f"got {result.get('valid')}")
+        if LIVE:
+            test("entries >= 23 (ledger grew through prior canaries)",
+                 result.get("entries", 0) >= 23, f"got {result.get('entries')}")
+        else:
+            test("entries == 2 (the §2 seeds this process wrote)",
+                 result.get("entries") == 2, f"got {result.get('entries')}")
+        test("reason is 'chain intact'", result.get("reason") == "chain intact",
+             f"got {result.get('reason')}")
+    except Exception as e:  # noqa: BLE001 — canary battery law: a failed probe is a FAIL test, not a crash
+        test("live verify_chain()", False, str(e))
+
+    # --- 3. Read path: get_entries ---
+    print("\n--- 3. Read path ---")
+    try:
+        entries = audit_ledger.get_entries(limit=5)
+        test("get_entries(5) returns a list", isinstance(entries, list))  # type: ignore[reportUnnecessaryIsInstance]
+        if LIVE:
+            test("get_entries(5) returns 5 entries on the live ledger", len(entries) == 5,
+                 f"got {len(entries)}")
+        else:
+            test("get_entries(5) returns the 2 seeded entries (isolated)", len(entries) == 2,
+                 f"got {len(entries)}")
+        first = entries[0] if entries else {}
+        test("entry carries hash chain fields",
+             "hash" in first and "prev_hash" in first,
+             f"keys: {sorted(first.keys())}")
+        # Observed deployed-vintage serving order: ASCENDING (oldest-first
+        # within the limit window) — verified against the live ledger 2026-10-03.
+        test("entries served in ascending timestamp order (deployed-vintage shape)",
+             all(entries[i]["timestamp"] <= entries[i + 1]["timestamp"]
+                 for i in range(len(entries) - 1)),
+             "timestamps not monotonic-ascending")
+    except Exception as e:  # noqa: BLE001 — canary battery law: a failed probe is a FAIL test, not a crash
+        test("get_entries", False, str(e))
+
+    # --- 4. Write path: append through the deployed shim (LIVE ledger,
+    #      the established canary pattern — entries 89/90 are this shape) ---
+    print("\n--- 4. Write path (canary append through the shim) ---")
+    try:
+        e1 = audit_ledger.append_entry("promotion", 4242, {"old_status": "established",
+                                                           "new_status": "rock",
+                                                           "wash_count": 20,
+                                                           "reason": "canary"})
+        test("append_entry returns dict", isinstance(e1, dict), f"got {type(e1)}")  # type: ignore[reportUnnecessaryIsInstance]
+        test("entry has prev_hash + hash", "prev_hash" in e1 and "hash" in e1)
+        test("hash is 64-hex", isinstance(e1.get("hash"), str) and len(e1["hash"]) == 64
+             and all(c in "0123456789abcdef" for c in e1["hash"]))
+        test("append flowed through the shim: live chain still intact",
+             audit_ledger.verify_chain()["valid"] is True,
+             "live chain invalid after append")
+        tail = audit_ledger.get_entries(limit=1)
+        test("newest live entry is the canary append (entry_id 4242)",
+             tail and tail[0].get("entry_id") == 4242,
+             f"got {tail[0].get('entry_id') if tail else 'empty'}")
+    except Exception as e:  # noqa: BLE001 — canary battery law: a failed probe is a FAIL test, not a crash
+        test("append_entry write path", False, str(e))
+
+    # --- 5. Rust binary CLI parity (the compiled candidate) ---
+    print("\n--- 5. Rust binary CLI parity ---")
+    import subprocess
+    import tempfile
+
+    BIN = _BIN
+    tmp2 = tempfile.mkdtemp(prefix="alcanary_cli_")
+    # The binary honors RUNE_MEMORY_DIR/RUNE_HOME first (main.rs ledger_path);
+    # the deployed shim resolves expanduser($HOME). Strip the RUNE_* overrides
+    # from binary envs so both surfaces resolve the SAME ledger — without this,
+    # CI's RUNE_MEMORY_DIR silently pointed the binary at an empty ledger while
+    # the shim wrote the sandboxed-HOME one (run 18141's ghost divergence).
+    clean_env = {k: v for k, v in os.environ.items()
+                 if k not in ("RUNE_MEMORY_DIR", "RUNE_HOME")}
+    if not os.path.exists(BIN):
+        # FAIL loud, never crash: run 18164 died on an uncaught Popen
+        # FileNotFoundError when the artifact was absent from the checkout.
+        # CI now builds the crate (canary job); a missing binary here means
+        # the build step regressed and this canary must go red, not skip.
+        test("release binary exists in the checkout (CI builds it)",
+             False, f"missing: {BIN}")
+    else:
+        try:
+            env = dict(clean_env, HOME=tmp2)
+            r = subprocess.run([BIN, "verify"], capture_output=True, text=True, env=env)
+            test("binary verify on missing ledger -> valid-empty",
+                 r.returncode == 0 and "Chain valid: True" in r.stdout
+                 and "Entries: 0" in r.stdout and "empty ledger" in r.stdout,
+                 f"rc={r.returncode} out={r.stdout!r} err={r.stderr!r}")
+            r = subprocess.run([BIN], capture_output=True, text=True, env=env)
+            test("binary no-args -> help + exit 1", r.returncode == 1
+                 and "usage:" in r.stdout, f"rc={r.returncode}")
+            r = subprocess.run([BIN, "frobnicate"], capture_output=True, text=True, env=env)
+            test("binary invalid choice -> exit 2", r.returncode == 2
+                 and "invalid choice" in r.stderr, f"rc={r.returncode} err={r.stderr!r}")
+            r = subprocess.run([BIN, "list", "--limit", "3"], capture_output=True, text=True,
+                               env=dict(clean_env, HOME=bin_home) if bin_home else clean_env)
+            test("binary list --limit 3 on the shim's ledger renders 3 entries",
+                 r.returncode == 0 and "Recent ledger entries (3):" in r.stdout,
+                 f"rc={r.returncode} out={r.stdout[:120]!r}")
+        finally:
+            import shutil
+            shutil.rmtree(tmp2, ignore_errors=True)
+
+    # --- 6. Port 2 (verification_layer) through the same cdylib ---
+    print("\n--- 6. Port 2: verification_layer via ep_loader ---")
+    import json
+    if _CRATE_DIR not in sys.path:
+        sys.path.insert(0, _CRATE_DIR)
+    try:
+        import ep_loader  # type: ignore[import-not-found]  (ctypes cdylib wrapper — runtime import by design)
+        v = ep_loader.verify('{"exit_code": 0}', "exit_code")
+        out = json.loads(v)
+        test("ep_verify exit_code=0 -> passed True", out.get("passed") is True)
+        v = ep_loader.verify('{"exit_code": false}', "exit_code")
+        out = json.loads(v)
+        test("ep_verify bool-false renders str() shape (False, not 0)",
+             out.get("passed") is True and out.get("evidence_refs") == ["exit_code=False"],
+             f"got {out}")
+        v = ep_loader.verify('{}', "frobnicate")
+        out = json.loads(v)
+        test("ep_verify unknown verifier -> passed False retryable False",
+             out.get("passed") is False and out.get("retryable") is False
+             and out.get("escalation_reason") == "unknown_verifier",
+             f"got {out}")
+    except Exception as e:  # noqa: BLE001 — canary battery law: a failed probe is a FAIL test, not a crash
+        test("port-2 ep_verify FFI", False, str(e))
+
+    # --- 7. src/rune shim module ---
+    print("\n--- 7. src/rune verification_layer shim ---")
+    try:
+        sys.path.insert(0, os.path.join(_REPO, "src", "rune"))
+        import verification_layer as vl
+        r = vl.verify({"exit_code": 1}, "exit_code")
+        test("shim verify returns VerificationResult dataclass",
+             type(r).__name__ == "VerificationResult")
+        test("shim CLI parity: fail case escalation_reason=exit_code_nonzero",
+             r.to_dict()["escalation_reason"] == "exit_code_nonzero")
+        test("shim PLUGIN name preserved", vl.PLUGIN["name"] == "verification_layer")
+    except Exception as e:  # noqa: BLE001 — canary battery law: a failed probe is a FAIL test, not a crash
+        test("src/rune verification_layer shim", False, str(e))
+
+    # --- 8. Port 3 (evidence_probe): schema gate + budget count ---
+    # Expectations probed against the serving shim 2026-10-03 (zero-dep split:
+    # schema gate + count Rust; orchestration Python).
+    print("\n--- 8. Port 3: evidence_probe shim ---")
+    import tempfile
+
+    try:
+        import evidence_probe as epr
+
+        errs = epr.validate_probe({})
+        test("validate_probe({}) -> 5 missing-field errors in field order",
+             errs == ["missing required field: question",
+                      "missing required field: source",
+                      "missing required field: answer",
+                      "missing required field: implication",
+                      "missing required field: status"], f"got {errs}")
+        good = {"question": "q", "source": "s", "answer": "a",
+                "implication": "i", "status": "STILL_UNKNOWN"}
+        test("valid STILL_UNKNOWN probe -> no errors",
+             epr.validate_probe(good) == [], f"got {epr.validate_probe(good)}")
+        bad_status = dict(good, status="PASS")
+        test("status 'PASS' -> membership error with Python repr rendering",
+             epr.validate_probe(bad_status) ==
+             ["status must be one of ['CONTRADICTED', 'GROUNDED', 'STILL_UNKNOWN'], got 'PASS'"],
+             f"got {epr.validate_probe(bad_status)}")
+        int_status = dict(good, status=7)
+        test("non-string status -> field error AND membership error (Python law)",
+             epr.validate_probe(int_status) ==
+             ["field status must be a string",
+              "status must be one of ['CONTRADICTED', 'GROUNDED', 'STILL_UNKNOWN'], got 7"],
+             f"got {epr.validate_probe(int_status)}")
+        extra = dict(good, extra=1)
+        test("extra field -> unexpected-fields error appended last",
+             epr.validate_probe(extra)[-1] == "unexpected extra fields: ['extra']",
+             f"got {epr.validate_probe(extra)}")
+        grounded_blank = dict(good, question="", status="GROUNDED")
+        test("blank question + GROUNDED -> both errors (citation gate)",
+             epr.validate_probe(grounded_blank) ==
+             ["field question must be a non-empty string",
+              "GROUNDED probe requires a concrete source citation"],
+             f"got {epr.validate_probe(grounded_blank)}")
+
+        probe_dir = tempfile.mkdtemp(prefix="eprcanary_")
+        try:
+            with open(os.path.join(probe_dir, "probe.jsonl"), "w") as f:
+                f.write('{"q": 1}\n\n{"r": 2}\n\n\n{"s": 3}\n')
+            test("count_probes counts non-empty lines only",
+                 epr.count_probes(probe_dir) == 3,
+                 f"got {epr.count_probes(probe_dir)}")
+            test("count_probes on missing dir -> 0",
+                 epr.count_probes(probe_dir + "/nope") == 0)
+            test("MAX_PROBES_PER_TASK is 2 (the no-recursion budget)",
+                 epr.MAX_PROBES_PER_TASK == 2)
+            try:
+                epr.check_budget(probe_dir)
+                test("check_budget raises at the budget", False, "no raise")
+            except epr.ProbeBudgetExceeded as e:
+                test("check_budget raises ProbeBudgetExceeded at 2 probes",
+                     str(e).startswith("probe budget exhausted (2)"), f"got {e}")
+        finally:
+            import shutil
+            shutil.rmtree(probe_dir, ignore_errors=True)
+    except Exception as e:  # noqa: BLE001 — canary battery law: a failed probe is a FAIL test, not a crash
+        test("port-3 evidence_probe shim", False, str(e))
+
+    # --- 9. Port 4 (behaviour_ledger): doc-envelope state machine ---
+    # Expectations probed against ep_loader 2026-10-03: doc-in/doc-out,
+    # {ok, err} envelope, CONFIRMED_STATES-only invalidation, TEST_FAILED-first
+    # queue ordering.
+    print("\n--- 9. Port 4: behaviour_ledger via ep_loader ---")
+    try:
+        import ep_loader  # type: ignore[import-not-found]  (already imported in §6; re-import is a cache hit)
+
+        doc = {"behaviours": {}}
+        doc, rec = ep_loader.bl_define(
+            doc, behaviour_id="alpha", owning_project="proj",
+            intended_behaviour="ib", origin_intent="oi", pass_criteria="pc",
+            fail_criteria="fc", procedure="proc", owner_component="comp:alpha",
+            dependencies=["dep:one"], automated_ref="ar", environment="env",
+            now="2026-10-03T23:00:00Z")
+        test("define returns (doc, rec) with normalized id + UNVALIDATED",
+             rec.get("behaviour_id") == "behaviour:alpha"
+             and rec.get("state") == "UNVALIDATED",
+             f"got id={rec.get('behaviour_id')} state={rec.get('state')}")
+        test("define record carries the 18-key shape",
+             set(rec.keys()) == {"automated_ref", "behaviour_id", "created_at",
+                                 "dependencies", "environment", "evidence",
+                                 "fail_criteria", "history", "intended_behaviour",
+                                 "invalidations", "limitations", "origin_intent",
+                                 "owner_component", "owning_project", "pass_criteria",
+                                 "procedure", "state", "updated_at"},
+             f"got {sorted(rec.keys())}")
+
+        doc, _ = ep_loader.bl_record_auto(doc, "alpha", passed=True,
+                                          detail="tests green", generation="g1",
+                                          now="2026-10-03T23:01:00Z")
+        rec_a = ep_loader.bl_get(doc, "alpha")
+        test("record_auto pass -> AUTO_VERIFIED (a CONFIRMED state)",
+             rec_a is not None and rec_a["state"] == "AUTO_VERIFIED")
+
+        doc, _ = ep_loader.bl_define(doc, behaviour_id="beta", owning_project="proj",
+                                     intended_behaviour="ib2", now="2026-10-03T23:02:00Z")
+        doc, _ = ep_loader.bl_record_auto(doc, "beta", passed=False, detail="flaky",
+                                          now="2026-10-03T23:03:00Z")
+        rec_b = ep_loader.bl_get(doc, "beta")
+        test("record_auto fail -> TEST_FAILED",
+             rec_b is not None and rec_b["state"] == "TEST_FAILED")
+
+        # Selective invalidation (rule 19I): only CONFIRMED_STATES with
+        # dep/owner overlap reopen; unrelated change preserves.
+        doc, untouched = ep_loader.bl_invalidate(
+            doc, changed_entities=["dep:unrelated"], now="2026-10-03T23:04:00Z")
+        rec_a = ep_loader.bl_get(doc, "alpha")
+        test("unrelated change invalidates nothing; AUTO_VERIFIED preserved",
+             untouched == [] and rec_a is not None and rec_a["state"] == "AUTO_VERIFIED")
+        doc, hit = ep_loader.bl_invalidate(
+            doc, changed_entities=["dep:one"], generation="g2",
+            reasons={"behaviour:alpha": "dep one changed"}, now="2026-10-03T23:05:00Z")
+        test("dependency hit invalidates exactly the confirmed behaviour",
+             len(hit) == 1 and hit[0]["state"] == "RETEST_REQUIRED",
+             f"got {[r['state'] for r in hit]}")
+        inv_entry = hit[0]["invalidations"][0]
+        test("invalidation entry carries because/generation/was/changed_entities",
+             inv_entry.get("because") == "dep one changed"
+             and inv_entry.get("generation") == "g2"
+             and inv_entry.get("was") == "AUTO_VERIFIED"
+             and inv_entry.get("changed_entities") == ["dep:one"],
+             f"got {inv_entry}")
+        doc, rehit = ep_loader.bl_invalidate(
+            doc, changed_entities=["dep:one"], now="2026-10-03T23:06:00Z")
+        rec_a = ep_loader.bl_get(doc, "alpha")
+        test("re-invalidating a non-confirmed record is a no-op",
+             rehit == [] and rec_a is not None and rec_a["state"] == "RETEST_REQUIRED")
+
+        out = ep_loader.bl_outstanding(doc)
+        test("outstanding() puts TEST_FAILED first (queue ordering)",
+             out and out[0]["state"] == "TEST_FAILED",
+             f"got {[(r['behaviour_id'], r['state']) for r in out]}")
+        summ = ep_loader.bl_summary(doc)
+        test("summary() shape {total, states, outstanding}",
+             summ.get("total") == 2 and isinstance(summ.get("states"), dict)
+             and "outstanding" in summ, f"got {summ}")
+        hist = ep_loader.bl_retest_history(doc, "alpha")
+        test("retest_history(alpha) -> [automated_verification, selective_invalidation]",
+             [e.get("kind") for e in hist] == ["automated_verification", "selective_invalidation"],
+             f"got {[e.get('kind') for e in hist]}")
+
+        try:
+            ep_loader.bl_define(doc, behaviour_id="alpha", owning_project="x",
+                                intended_behaviour="y", now="2026-10-03T23:07:00Z")
+            test("duplicate define raises ValueError", False, "no raise")
+        except ValueError as e:
+            test("duplicate define error message byte-exact",
+                 str(e) == "behaviour exists: behaviour:alpha", f"got {e}")
+        try:
+            ep_loader.bl_record_auto(doc, "ghost", passed=True, now="2026-10-03T23:08:00Z")
+            test("unknown behaviour record raises ValueError", False, "no raise")
+        except ValueError as e:
+            test("unknown behaviour error message byte-exact",
+                 str(e) == "unknown behaviour 'ghost'", f"got {e}")
+    except Exception as e:  # noqa: BLE001 — canary battery law: a failed probe is a FAIL test, not a crash
+        test("port-4 behaviour_ledger FFI", False, str(e))
+
+    # --- 10. Port 5 (behavior): decision math through the shim on an
+    #     isolated db (RUNE_HOME + RUNE_MEMORY_DIR pinned BEFORE import —
+    #     memory_dir() honors RUNE_MEMORY_DIR first, and DB_PATH resolves at
+    #     import time). SQLite stays Python; the math is Rust.
+    print("\n--- 10. Port 5: behavior shim (isolated db) ---")
+    _iso_home = tempfile.mkdtemp(prefix="alcanary_runehome_")
+    os.environ["RUNE_HOME"] = _iso_home
+    os.environ["RUNE_MEMORY_DIR"] = os.path.join(_iso_home, "memory")
+    try:
+        import behavior as bh
+
+        test("behavior DB resolved under the isolated RUNE_HOME",
+             bh.DB_PATH.startswith(os.environ["RUNE_HOME"]), f"got {bh.DB_PATH}")
+        cid = bh.add_correction("say X", "say Y", domain="canary")["added"]
+        r = bh.reinforce(cid, "success", item_type="correction")
+        test("correction reinforce success: confidence 0.5 -> 0.6, stays active",
+             r == {"reinforced": cid, "confidence": 0.6, "state": "active"},
+             f"got {r}")
+        r = bh.reinforce(cid, "failure", item_type="correction")
+        test("correction reinforce failure: 0.6 -> 0.3, archives at the boundary",
+             r == {"reinforced": cid, "confidence": 0.3, "state": "archived"},
+             f"got {r}")
+        hid = bh.add_habit("trigger t", "action a", name="canary habit")["added"]
+        for _ in range(3):
+            r = bh.reinforce(hid, "success")
+        test("habit promotion: candidate -> active at min_activations (3)",
+             r["state"] == "active" and r["confidence"] == 1,
+             f"got {r}")
+        test("habit not-found returns error dict (not raise)",
+             bh.reinforce(99999, "success") == {"error": "Habit 99999 not found"})
+        test("correction not-found returns error dict (not raise)",
+             bh.reinforce(99999, "success", item_type="correction")
+             == {"error": "Correction 99999 not found"})
+        stats = bh.behavior_stats()
+        test("behavior_stats carries the five-key shape",
+             set(stats.keys()) == {"corrections_active", "corrections_archived",
+                                   "habits_active", "habits_candidate",
+                                   "total_activations"}, f"got {sorted(stats.keys())}")
+        test("stats reflect the battery: 1 archived correction, 1 active habit",
+             stats["corrections_archived"] == 1 and stats["habits_active"] == 1,
+             f"got {stats}")
+    except Exception as e:  # noqa: BLE001 — canary battery law: a failed probe is a FAIL test, not a crash
+        test("port-5 behavior shim", False, str(e))
+
+    # --- 11. Port 6 (claim_audit): full pipeline through the shim on an
+    #     isolated journal (MEM_DIR resolves under the pinned RUNE_HOME).
+    #     SYMMETRY GUARD never-fatal: research_lens absence must not crash.
+    print("\n--- 11. Port 6: claim_audit shim (isolated journal) ---")
+    try:
+        import claim_audit as ca
+
+        claims = ca.scan("We exceeded the frontier. Results are flawless.")
+        test("scan flags the comparative + absolute claims",
+             [(c["type"], c["match"]) for c in claims]
+             == [("comparative", "we exceeded"), ("absolute", "flawless")],
+             f"got {[(c['type'], c['match']) for c in claims]}")
+        st = ca.scan_text("We exceeded anything.")
+        test("scan_text returns the repaired {claims, clean, degraded, rewritten} surface",
+             set(st.keys()) == {"claims", "clean", "degraded", "rewritten"},
+             f"got {sorted(st.keys())}")
+        test("scan_text degrades the unsupported comparative (clean False)",
+             st["clean"] is False and len(st["degraded"]) == 1
+             and st["degraded"][0]["verdict"] == "DEGRADE",
+             f"clean={st['clean']} degraded={st['degraded']}")
+        res = ca.audit("We exceeded the frontier. Results are flawless.")
+        test("audit() -> both claims DEGRADE, clean False",
+             res["clean"] is False
+             and [c["verdict"] for c in res["claims"]] == ["DEGRADE", "DEGRADE"],
+             f"got {[(c['verdict']) for c in res['claims']]} clean={res['clean']}")
+        test("audit() rewrote the draft (degrade templates applied)",
+             res["rewritten"] != "We exceeded the frontier. Results are flawless.")
+        with open(ca.JOURNAL) as f:
+            rows = f.readlines()
+        test("journal wrote one row per claim + scan_text row (isolated)",
+             len(rows) == 3, f"got {len(rows)} rows at {ca.JOURNAL}")
+        rep = ca.report()
+        test("report() aggregates through the Rust core: total + by_verdict + by_type",
+             rep.get("total") == 3
+             and rep.get("by_verdict", {}).get("DEGRADE") == 3
+             and rep.get("by_type", {}).get("comparative") == 2
+             and rep.get("by_type", {}).get("absolute") == 1,
+             f"got {rep}")
+        test("verify() on an unsupported plain claim -> ('DEGRADE', 0)",
+             ca.verify("the module renders a menu when opened") == ("DEGRADE", 0))
+        test("evidence-term stoplist through the Rust core (>=4 chars, trio dropped)",
+             ca.ep_loader.ca_evidence_terms(["this", "hash", "canary", "ru"])
+             == ["this", "hash", "canary"],
+             f"got {ca.ep_loader.ca_evidence_terms(['this', 'hash', 'canary', 'ru'])}")
+    except Exception as e:  # noqa: BLE001 — canary battery law: a failed probe is a FAIL test, not a crash
+        test("port-6 claim_audit shim", False, str(e))
+
+    print(f"\n{'=' * 47}")
+    print(f"RESULTS: {PASS} pass, {FAIL} fail")
+    sys.exit(1 if FAIL else 0)
+
+
+if __name__ == "__main__":
+    app = os.path.join(sys.path[0], "canary_audit_ledger.py")
+    if len(sys.argv) > 1 and sys.argv[1] == "--selfcheck":
+        print("selfcheck ok")
+        sys.exit(0)
+    main()

src/rune/canary_gitea_automation.py

@@ -19,7 +19,8 @@ def has_idempotent_label_removal(workflow: str) -> bool:
     return bool(
         re.search(
             r"for \(const name of staleManaged\) \{\s*"
-            r"try \{\s*await github\.rest\.issues\.removeLabel\(\{.*?"
+            r"try \{.*?await github\.request\('DELETE /repos/\{owner\}/\{repo\}/issues/\{issue_number\}/labels/\{id\}', \{.*?"
+            r"id: currentLabelIds\.get\(name\),\s*"
             r"\}\);\s*\} catch \(error\) \{\s*"
             r"if \(error\.status !== 404\) \{\s*throw error;\s*\}\s*"
             r"console\.log\(`Managed label already absent: \$\{name\}`\);\s*"
@@ -64,7 +65,7 @@ def main() -> int:
         "infrastructure",
         "life",
         "custodian",
-        "priority: high",
+        "P0 — critical", "P1 — high", "P2 — medium", "P3 — low",
         "bug",
         "feature",
     )
@@ -80,7 +81,8 @@ def main() -> int:
     )
     check(
         "stale managed labels are removed",
-        "managedLabels.has" in auto_label and "!desiredLabels.has" in auto_label and "removeLabel" in auto_label,
+        "managedLabels.has" in auto_label and "!desiredLabels.has" in auto_label
+        and "currentLabelIds.get(name)" in auto_label,
         failures,
     )
     check(
@@ -231,7 +233,7 @@ def main() -> int:
     )
     check(
         "Rune minor version advertises provisioning and restore verification",
-        '__version__ = "0.89.0"' in rune_version,
+        '__version__ = "0.99.6"' in rune_version,
         failures,
     )
     # #169 policy update: auto-bump on merge is sanctioned (Nick directive:

src/rune/canary_rune_entry.py

@@ -0,0 +1,137 @@
+#!/usr/bin/env python3
+"""canary_rune_entry.py — H1 canary for the Go first-call shim.
+
+Same PASS/FAIL discipline as the slice canaries (counter harness, exit 1 on
+any FAIL). The canary builds the zero-dep Go module into a temp dir at run
+start (works on the desktop and in CI — system Go is world-readable), then
+verifies the observed launcher contract:
+
+  --version     -> "rune <x.y.z>" matching the deployed pyproject version
+  --python-only -> the exact handoff shape of the deployed bash launcher
+                   (cd <deployed>/src && <venv-python> -m rune <args>)
+  --help        -> usage text, exit 0
+  unknown flag  -> usage on stderr, exit 2
+  go test       -> the module's own unit battery green (subprocess)
+
+Expectations are OBSERVED, not invented: the bash launcher at
+~/.local/bin/rune (cd + env contract) and the deployed pyproject version.
+
+Run under ~/.venvs/memory/bin/python3.
+"""
+
+import os
+import subprocess
+import sys
+import tempfile
+
+PASS = 0
+FAIL = 0
+
+REPO = os.path.abspath(os.path.join(os.path.dirname(os.path.abspath(__file__)), "..", ".."))
+GO_MOD = os.path.join(REPO, "src", "go", "rune-entry")
+
+
+def test(name, cond, detail=""):
+    global PASS, FAIL
+    mark = "✓" if cond else "✗"
+    print(f"  {mark} {name}" + (f" — {detail}" if detail and not cond else ""))
+    if cond:
+        PASS += 1
+    else:
+        FAIL += 1
+
+
+def deployed_version():
+    for cand in ("/mnt/workdrive/rune-code/current/pyproject.toml",
+                 os.path.join(REPO, "pyproject.toml")):
+        try:
+            for line in open(cand):
+                if line.startswith('version = "'):
+                    return line.split('"')[1]
+        except OSError:
+            continue
+    return None
+
+
+def main():
+    print("=== RUNE ENTRY (Go first-call) CANARY (H1) ===\n")
+
+    # --- 0. Build the artifact (zero-dep; system Go) ---
+    print("--- 0. Build ---")
+    tmp = tempfile.mkdtemp(prefix="runeentry_canary_")
+    bin_path = os.path.join(tmp, "rune")
+    r = subprocess.run(["go", "build", "-o", bin_path, "."],
+                       capture_output=True, text=True, cwd=GO_MOD)
+    test("go build succeeds (zero-dep, system toolchain)", r.returncode == 0,
+         f"rc={r.returncode} err={r.stderr[:200]!r}")
+    if r.returncode != 0:
+        print(f"\nRESULTS: {PASS} pass, {FAIL} fail")
+        sys.exit(1)
+
+    # --- 1. Version surface ---
+    print("\n--- 1. Version ---")
+    want = deployed_version()
+    r = subprocess.run([bin_path, "--version"], capture_output=True, text=True)
+    test("--version exits 0", r.returncode == 0, f"rc={r.returncode}")
+    test("--version prints 'rune <x.y.z>'",
+         r.stdout.startswith("rune ") and r.stdout.split()[-1].count(".") == 2,
+         f"got {r.stdout!r}")
+    test("version matches the deployed pyproject",
+         want is not None and r.stdout.strip() == f"rune {want}",
+         f"got {r.stdout.strip()!r} want 'rune {want}'")
+
+    # --- 2. Handoff shape (the bash launcher's contract) ---
+    print("\n--- 2. Handoff shape ---")
+    r = subprocess.run([bin_path, "--python-only", "status"],
+                       capture_output=True, text=True)
+    out = r.stdout.strip()
+    test("--python-only exits 0", r.returncode == 0, f"rc={r.returncode}")
+    test("handoff cd's into the deployed src revision",
+         out.startswith("(cd /mnt/workdrive/rune-code/current/src"),
+         f"got {out!r}")
+    venv_py = os.path.join(os.environ.get("HOME", ""), ".venvs", "memory", "bin", "python3")
+    if os.path.isfile(venv_py):
+        test("handoff execs the memory-venv python with -m rune",
+             ".venvs/memory/bin/python3 -m rune" in out, f"got {out!r}")
+    else:
+        test("handoff falls back to PATH python3 when the memory venv is absent "
+             "(bare HOME — CI sandbox)",
+             "python3 -m rune" in out, f"got {out!r}")
+    test("args pass through the handoff",
+         out.endswith("status)"), f"got {out!r}")
+
+    # --- 3. Flag discipline ---
+    print("\n--- 3. Flag discipline ---")
+    r = subprocess.run([bin_path, "--help"], capture_output=True, text=True)
+    test("--help exits 0 with usage text",
+         r.returncode == 0 and "usage:" in r.stdout,
+         f"rc={r.returncode} out={r.stdout[:60]!r}")
+    r = subprocess.run([bin_path, "--frobnicate"], capture_output=True, text=True)
+    test("unknown flag -> exit 2 + usage on stderr",
+         r.returncode == 2 and "usage:" in r.stderr,
+         f"rc={r.returncode} err={r.stderr[:80]!r}")
+
+    # --- 4. The module's own unit battery ---
+    print("\n--- 4. go test ---")
+    r = subprocess.run(["go", "test", "./..."], capture_output=True, text=True,
+                       cwd=GO_MOD)
+    test("go test ./... green (the Go unit battery)",
+         r.returncode == 0 and "ok" in r.stdout,
+         f"rc={r.returncode} out={r.stdout[-120:]!r}")
+
+    # --- 5. go vet ---
+    print("\n--- 5. go vet ---")
+    r = subprocess.run(["go", "vet", "./..."], capture_output=True, text=True,
+                       cwd=GO_MOD)
+    test("go vet clean", r.returncode == 0,
+         f"rc={r.returncode} err={r.stderr[:120]!r}")
+
+    import shutil
+    shutil.rmtree(tmp, ignore_errors=True)
+    print(f"\n{'=' * 47}")
+    print(f"RESULTS: {PASS} pass, {FAIL} fail")
+    sys.exit(1 if FAIL else 0)
+
+
+if __name__ == "__main__":
+    main()

src/rune/canary_rune_serve.py

@@ -0,0 +1,329 @@
+#!/usr/bin/env python3
+"""canary_rune_serve.py — H2 parity battery (T4.3, contract
+BUILDER-2026-10-04T08:32:43Z-cli).
+
+The H2 contract: the Go front door (`rune serve`) serves IDENTICAL shapes
+to the Python core server for the same canned conversations — byte-level
+for metadata (modulo volatile id/created), exact for NDJSON line sequences.
+
+Determinism law: no live model calls. Both servers run against a stub
+operator with canned responses (the established _execute_on_model stub
+class of seam — the server's shape is the contract under test, not the
+cognition behind it).
+
+Sections:
+  1. Python core server boots (stdlib, ephemeral port)
+  2. Python shape freeze (models / status / chat / stream / 404)
+  3. Go serve subcommand builds and answers --help
+  4. Cross-language parity (Go front → Python core, same canned set)
+  5. Core-down honesty (502 envelope, both servers agree)
+
+Run: python3 src/rune/canary_rune_serve.py
+"""
+
+from __future__ import annotations
+
+import json
+import os
+import subprocess
+import sys
+import time
+import urllib.error
+import urllib.request
+from pathlib import Path
+
+REPO = Path(__file__).resolve().parents[2]
+sys.path.insert(0, str(REPO / "src"))
+
+PASS = 0
+FAIL = 0
+
+
+def test(name: str, ok: bool, detail: str = "") -> None:
+    global PASS, FAIL
+    if ok:
+        PASS += 1
+        print(f"  ✓ {name}")
+    else:
+        FAIL += 1
+        print(f"  ✗ {name} — {detail}")
+
+
+# ── stub operator: canned, deterministic ────────────────────────────────────
+
+CANNED_TASK = {
+    "task_id": "task-canned-001",
+    "status": "completed",
+    "model": "stub-model",
+    "route": "direct",
+    "user_text": "Canned reply: the shape is the contract.",
+    "success": True,
+    "degraded": [],
+    "iterations_used": 1,
+    "iteration_budget": 6,
+}
+
+
+class StubOperator:
+    def list_models(self):
+        return [{"name": "stub-model-a", "size_gb": 4.1},
+                {"name": "stub-model-b", "size_gb": 8.2}]
+
+    def get_status(self):
+        return {"identity": "rune", "role": "operator", "current_task": None,
+                "active_model": "stub-model-a", "tasks_pending": 0,
+                "tasks_running": 0, "tasks_completed": 3}
+
+    def send_task(self, description, model=None, channel="operator"):
+        out = dict(CANNED_TASK)
+        out["echo"] = description  # proves the request reached the core
+        return out
+
+    def conversation_window(self, channel="operator", n=8):
+        return [{"role": "user", "content": "earlier", "channel_id": channel}][:n]
+
+    def resolve_pending_approval(self, approved):
+        return {"resolved": bool(approved), "approval_id": "appr-1"}
+
+
+# ── http helpers ─────────────────────────────────────────────────────────────
+
+def http(method: str, url: str, body: dict | None = None):
+    data = json.dumps(body).encode() if body is not None else None
+    req = urllib.request.Request(url, data=data, method=method,
+                                 headers={"Content-Type": "application/json"})
+    try:
+        with urllib.request.urlopen(req, timeout=10) as resp:
+            raw = resp.read().decode()
+            return resp.status, raw
+    except urllib.error.HTTPError as e:
+        return e.code, e.read().decode()
+
+
+def normalize(obj):
+    """Strip volatile fields (id, created) for parity comparison."""
+    if isinstance(obj, dict):
+        return {k: normalize(v) for k, v in obj.items()
+                if k not in ("id", "created")}
+    if isinstance(obj, list):
+        return [normalize(v) for v in obj]
+    return obj
+
+
+def wait_ready(url: str, timeout: float = 10.0) -> bool:
+    deadline = time.time() + timeout
+    while time.time() < deadline:
+        try:
+            with urllib.request.urlopen(url, timeout=1) as r:
+                if r.status == 200:
+                    return True
+        except Exception:  # noqa: BLE001 — readiness poll: any failure = not yet
+            time.sleep(0.1)
+    return False
+
+
+CANNED_CHAT = {"model": "stub-model-a",
+               "messages": [{"role": "user", "content": "Say the canned thing."}]}
+
+
+def fire_shape_set(base: str) -> dict:
+    """The canned request battery against one server; returns raw results."""
+    out = {}
+    out["models"] = http("GET", f"{base}/v1/models")
+    out["status"] = http("GET", f"{base}/v1/status")
+    out["chat"] = http("POST", f"{base}/v1/chat/completions", CANNED_CHAT)
+    out["stream"] = http("POST", f"{base}/v1/chat/completions",
+                         {**CANNED_CHAT, "stream": True})
+    out["conversation"] = http("GET", f"{base}/v1/conversation?channel=operator&n=8")
+    out["approve"] = http("POST", f"{base}/v1/approvals/resolve", {"approved": True})
+    out["missing"] = http("GET", f"{base}/v1/definitely-not-here")
+    return out
+
+
+def check_shapes(prefix: str, results: dict) -> None:
+    s, raw = results["models"]
+    body = json.loads(raw) if s == 200 else {}
+    test(f"{prefix}: /v1/models 200 + list envelope",
+         s == 200 and body.get("object") == "list"
+         and [m.get("id") for m in body.get("data", [])] == ["stub-model-a", "stub-model-b"]
+         and all(m.get("object") == "model" and m.get("owned_by") == "rune"
+                 for m in body.get("data", [])),
+         f"status={s} body={raw[:160]!r}")
+
+    s, raw = results["status"]
+    body = json.loads(raw) if s == 200 else {}
+    test(f"{prefix}: /v1/status pass-through keys",
+         s == 200 and body.get("active_model") == "stub-model-a"
+         and body.get("tasks_completed") == 3,
+         f"status={s} body={raw[:160]!r}")
+
+    s, raw = results["chat"]
+    body = json.loads(raw) if s == 200 else {}
+    choices = body.get("choices", [{}])
+    test(f"{prefix}: chat.completion envelope + rune metadata",
+         s == 200 and body.get("object") == "chat.completion"
+         and choices[0].get("message", {}).get("role") == "assistant"
+         and "Canned reply" in choices[0].get("message", {}).get("content", "")
+         and body.get("rune", {}).get("task_id") == "task-canned-001"
+         and body.get("rune", {}).get("echo") == "Say the canned thing.",
+         f"status={s} body={raw[:200]!r}")
+
+    s, raw = results["stream"]
+    lines = [l for l in raw.strip().splitlines() if l.strip()]
+    parsed = []
+    for l in lines:
+        try:
+            parsed.append(json.loads(l))
+        except json.JSONDecodeError:
+            parsed.append(None)
+    test(f"{prefix}: NDJSON stream — chunk(s) then terminal",
+         s == 200 and len(parsed) >= 2 and None not in parsed
+         and all(p.get("object") == "chat.completion.chunk" for p in parsed)
+         and parsed[-1].get("choices", [{}])[0].get("finish_reason") == "stop"
+         and "Canned reply" in (parsed[0].get("choices", [{}])[0]
+                                 .get("delta", {}).get("content", "")),
+         f"status={s} lines={len(lines)} raw={raw[:200]!r}")
+
+    s, raw = results["conversation"]
+    body = json.loads(raw) if s == 200 else {}
+    test(f"{prefix}: /v1/conversation window shape",
+         s == 200 and isinstance(body.get("messages"), list)
+         and body["messages"][0]["role"] == "user",
+         f"status={s} body={raw[:160]!r}")
+
+    s, raw = results["approve"]
+    body = json.loads(raw) if s == 200 else {}
+    test(f"{prefix}: /v1/approvals/resolve round-trip",
+         s == 200 and body.get("resolved") is True,
+         f"status={s} body={raw[:160]!r}")
+
+    s, raw = results["missing"]
+    body = json.loads(raw) if raw else {}
+    test(f"{prefix}: 404 error envelope",
+         s == 404 and body.get("error", {}).get("code") == "not_found",
+         f"status={s} body={raw[:160]!r}")
+
+
+def compare_results(py: dict, go: dict) -> None:
+    for key in ("models", "status", "chat", "conversation", "approve", "missing"):
+        (ps, praw), (gs, graw) = py[key], go[key]
+        same_status = ps == gs
+        try:
+            same_body = normalize(json.loads(praw)) == normalize(json.loads(graw))
+        except json.JSONDecodeError:
+            same_body = praw == graw
+        test(f"parity: {key} identical modulo volatile",
+             same_status and same_body,
+             f"py=({ps}) {praw[:140]!r} go=({gs}) {graw[:140]!r}")
+    # NDJSON: exact line-sequence equality modulo volatile
+    (ps, praw), (gs, graw) = py["stream"], go["stream"]
+    pl = [normalize(json.loads(l)) for l in praw.strip().splitlines() if l.strip()]
+    gl = [normalize(json.loads(l)) for l in graw.strip().splitlines() if l.strip()]
+    test("parity: NDJSON line sequences identical modulo volatile",
+         ps == gs and pl == gl,
+         f"py_lines={len(pl)} go_lines={len(gl)}")
+
+
+def main() -> int:
+    print("=" * 47)
+    print("canary_rune_serve — H2 Go front-door parity battery")
+    print("=" * 47)
+
+    # ── 1. Python core server boots ───────────────────────────────────────
+    print("\n--- 1. Python core server ---")
+    try:
+        from rune import core_server
+    except ImportError as e:
+        test("core_server imports", False, str(e))
+        print(f"\nRESULTS: {PASS} pass, {FAIL} fail")
+        return 1
+    test("core_server imports", True)
+
+    server = core_server.make_server("127.0.0.1", 0, StubOperator())
+    port = server.server_address[1]
+    import threading
+    t = threading.Thread(target=server.serve_forever, daemon=True)
+    t.start()
+    py_base = f"http://127.0.0.1:{port}"
+    test("core server answers on an ephemeral port",
+         wait_ready(f"{py_base}/v1/status"), py_base)
+
+    # ── 2. Python shape freeze ────────────────────────────────────────────
+    print("\n--- 2. Python shape freeze ---")
+    py_results = fire_shape_set(py_base)
+    check_shapes("python", py_results)
+
+    # ── 3. Go serve subcommand ────────────────────────────────────────────
+    print("\n--- 3. Go serve subcommand ---")
+    go_dir = REPO / "src" / "go" / "rune-entry"
+    env = dict(os.environ)
+    env["GOFLAGS"] = env.get("GOFLAGS", "") + " -mod=mod"
+    # Per-run output path: a fixed /tmp name collides cross-user (nick owns
+    # the local build; the runner cannot overwrite it — run 18322 EACCES).
+    go_bin = f"/tmp/rune-serve-canary-{os.getpid()}"
+    r = subprocess.run(["go", "build", "-o", go_bin, "."],
+                       cwd=go_dir, env=env, capture_output=True, text=True, timeout=300)
+    test("go build exits 0", r.returncode == 0,
+         f"rc={r.returncode} err={r.stderr[-200:]!r}")
+    if r.returncode != 0:
+        print(f"\nRESULTS: {PASS} pass, {FAIL} fail")
+        return 1
+    r = subprocess.run([go_bin, "serve", "--help"],
+                       capture_output=True, text=True, timeout=30)
+    test("rune serve --help exits 0 with usage",
+         r.returncode == 0 and "core" in (r.stdout + r.stderr).lower(),
+         f"rc={r.returncode} out={(r.stdout + r.stderr)[:160]!r}")
+
+    # ── 4. Cross-language parity ──────────────────────────────────────────
+    print("\n--- 4. Parity: Go front → Python core ---")
+    go_port = port + 1
+    proc = subprocess.Popen(
+        [go_bin, "serve", "--port", str(go_port),
+         "--core", py_base],
+        stdout=subprocess.PIPE, stderr=subprocess.STDOUT, text=True)
+    go_base = f"http://127.0.0.1:{go_port}"
+    try:
+        ready = wait_ready(f"{go_base}/v1/status")
+        test("go front answers on its port", ready, go_base)
+        if ready:
+            go_results = fire_shape_set(go_base)
+            check_shapes("go", go_results)
+            compare_results(py_results, go_results)
+    finally:
+        proc.terminate()
+        try:
+            proc.wait(timeout=5)
+        except subprocess.TimeoutExpired:
+            proc.kill()
+
+    # ── 5. Core-down honesty ──────────────────────────────────────────────
+    print("\n--- 5. Core-down honesty ---")
+    proc = subprocess.Popen(
+        [go_bin, "serve", "--port", str(go_port),
+         "--core", "http://127.0.0.1:1"],  # nothing listening
+        stdout=subprocess.PIPE, stderr=subprocess.STDOUT, text=True)
+    try:
+        time.sleep(0.5)  # listener comes up even though the core never will
+        s, raw = http("POST", f"{go_base}/v1/chat/completions", CANNED_CHAT)
+        body = json.loads(raw) if raw else {}
+        test("go 502 envelope when the core is down",
+             s == 502 and body.get("error", {}).get("code") == "core_unavailable",
+             f"status={s} body={raw[:160]!r}")
+        s2, raw2 = http("POST", f"{py_base}/v1/chat/completions", CANNED_CHAT)
+        test("python core still healthy after go core-down probe",
+             s2 == 200, f"status={s2}")
+    finally:
+        proc.terminate()
+        try:
+            proc.wait(timeout=5)
+        except subprocess.TimeoutExpired:
+            proc.kill()
+
+    server.shutdown()
+    print(f"\n{'=' * 47}")
+    print(f"RESULTS: {PASS} pass, {FAIL} fail")
+    return 1 if FAIL else 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())

src/rune/canary_spine_meta.py

@@ -0,0 +1,192 @@
+#!/usr/bin/env python3
+"""canary_spine_meta.py — meta-scaffold canary (H-meta).
+
+Contract BUILDER-2026-10-04T06:24:56Z-cli (Nick directive 2026-10-04):
+every part of rune must exist as a modeled entity in rune's spine — the
+spine is the meta-scaffold. This canary proves the projection models the
+surface classes the closures have been honestly reporting as unmodeled:
+
+  1. rust-crate entities for both crates (evidence_provenance, query_memory)
+  2. go-surface entity for src/go/rune-entry
+  3. module entities for canary_audit_ledger / canary_rune_entry /
+     canary_evidence_provenance_rust (with obligated_canary edges)
+  4. workflow entities for every .gitea/workflows/*.yml
+  5. config entities for the tranche config files
+  6. determinism: two consecutive builds differ only in generated_at
+  7. open-world law: every pre-existing entity survives the rebuild
+
+PASS/FAIL counter harness, exit 1 on any FAIL. Expectations observed from
+the spine's own projection rules (src/rune/spine.py) and the umbrella
+manifest — never invented.
+
+Run under ~/.venvs/memory/bin/python3.
+"""
+
+import json
+import os
+import subprocess
+import sys
+
+PASS = 0
+FAIL = 0
+
+REPO = os.path.abspath(os.path.join(os.path.dirname(os.path.abspath(__file__)), "..", ".."))
+SPINE_STORE = os.path.join(REPO, "store", "spine", "current.json")
+
+
+def test(name, cond, detail=""):
+    global PASS, FAIL
+    mark = "✓" if cond else "✗"
+    print(f"  {mark} {name}" + (f" — {detail}" if detail and not cond else ""))
+    if cond:
+        PASS += 1
+    else:
+        FAIL += 1
+
+
+def build_spine():
+    r = subprocess.run(
+        [sys.executable, "-m", "rune.spine", "build"],
+        capture_output=True, text=True, timeout=180,
+        env={"PYTHONPATH": os.path.join(REPO, "src"), "PATH": os.environ.get("PATH", ""),
+             "HOME": os.environ.get("HOME", "")},
+        cwd=REPO)
+    return r
+
+
+def load_spine():
+    return json.load(open(SPINE_STORE))
+
+
+def main():
+    print("=== SPINE META-SCAFFOLD CANARY (H-meta) ===\n")
+    pre = load_spine() if os.path.isfile(SPINE_STORE) else {"entities": []}
+    pre_ids = {e["id"] for e in pre["entities"]}
+
+    # --- 0. Build ---
+    print("--- 0. Build ---")
+    r = build_spine()
+    test("spine build exits 0", r.returncode == 0, f"rc={r.returncode} err={r.stderr[-200:]!r}")
+    if r.returncode != 0:
+        print(f"\nRESULTS: {PASS} pass, {FAIL} fail")
+        sys.exit(1)
+    doc = load_spine()
+    ents = {e["id"]: e for e in doc["entities"]}
+    rels = doc.get("relationships", [])
+
+    # --- 1. Rust crates ---
+    print("\n--- 1. Rust crates ---")
+    for crate in ("evidence_provenance", "query_memory"):
+        eid = f"rust-crate:{crate}"
+        test(f"{eid} exists with kind rust-crate",
+             eid in ents and ents[eid]["kind"] == "rust-crate",
+             f"ids matching: {[i for i in ents if crate in i][:4]}")
+
+    # --- 2. Go surface ---
+    print("\n--- 2. Go surface ---")
+    test("go-surface:rune-entry exists with kind go-surface",
+         "go-surface:rune-entry" in ents
+         and ents["go-surface:rune-entry"]["kind"] == "go-surface",
+         f"ids matching: {[i for i in ents if 'rune-entry' in i][:4]}")
+
+    # --- 3. Missing canaries modeled ---
+    print("\n--- 3. Canaries ---")
+    for canary in ("canary_audit_ledger", "canary_rune_entry",
+                   "canary_evidence_provenance_rust"):
+        mid = f"module:{canary}"
+        test(f"{mid} entity exists", mid in ents,
+             f"present: {mid in ents}")
+        edge = any(r["type"] == "obligated_canary" and r["to"] == mid for r in rels)
+        test(f"{mid} has an obligated_canary edge from its umbrella", edge)
+
+    # --- 4. Workflows ---
+    print("\n--- 4. Workflows ---")
+    import glob
+    wf_files = sorted(os.path.basename(p)
+                      for p in glob.glob(os.path.join(REPO, ".gitea", "workflows", "*.yml")))
+    test("workflow inventory is non-empty", len(wf_files) >= 10, f"found {len(wf_files)}")
+    missing = [w for w in wf_files if f"workflow:{w}" not in ents]
+    test("every workflow file has a workflow entity", not missing,
+         f"missing: {missing[:4]}")
+
+    # --- 5. Configs ---
+    print("\n--- 5. Configs ---")
+    for cfg in ("go-version.txt", "lint-baseline.json", "pyright-baseline.json",
+                ".coveragerc"):
+        cid = f"config:{cfg}"
+        test(f"{cid} entity exists with kind config",
+             cid in ents and ents[cid]["kind"] == "config",
+             f"present: {cid in ents}")
+
+    # --- 6. Determinism (steady-state pair) ---
+    # The honest determinism contract: once the store already carries the
+    # projector's facts, two consecutive builds with identical inputs must
+    # differ only in generated_at. A MIGRATION pair (store predating the
+    # projector vs store carrying it) is not a determinism failure — the
+    # first build after any projector change legitimately rewrites state.
+    # The warm-up build makes this check judge steady-state, not migration.
+    print("\n--- 6. Determinism (steady-state) ---")
+    warm = build_spine()
+    test("warm-up build exits 0", warm.returncode == 0,
+         f"rc={warm.returncode} err={warm.stderr[-160:]!r}")
+    r = build_spine()
+    first = load_spine()
+    r = build_spine()
+    second = load_spine()
+    def strip_ts(d):
+        """Deep-strip time-varying fields: determinism is a STRUCTURAL
+        contract (same entities/relationships/observation content), not a
+        clock contract. observed_at/deployed_at/generated_at tick every
+        build by design — comparing them made this check pass or fail on
+        whether the two builds crossed a one-second boundary."""
+        TIME_KEYS = {"generated_at", "observed_at", "deployed_at", "updated_at",
+                     "last_success"}
+        def walk(x):
+            if isinstance(x, dict):
+                return {k: walk(v) for k, v in x.items() if k not in TIME_KEYS}
+            if isinstance(x, list):
+                return [walk(v) for v in x]
+            return x
+        def normalize(d):
+            d = walk(d)
+            # build() appends one deployed_identity observation per pass and
+            # the store dedups on the FULL observation (timestamp included),
+            # so the observations list grows by one identical-modulo-timestamp
+            # entry per build. Structural content = the deduped set.
+            seen, obs = set(), []
+            for o in d.get("observations", []):
+                key = json.dumps(o, sort_keys=True)
+                if key not in seen:
+                    seen.add(key)
+                    obs.append(o)
+            if "observations" in d:
+                d["observations"] = obs
+            return d
+        return normalize(json.loads(json.dumps(d)))
+    fa, fb = strip_ts(first), strip_ts(second)
+    if fa != fb:
+        # Diagnostic: write the stripped pair so the divergence is inspectable
+        # instead of a bare boolean verdict.
+        with open("/tmp/spine_meta_determinism_first.json", "w") as f:
+            json.dump(fa, f, indent=2, sort_keys=True)
+        with open("/tmp/spine_meta_determinism_second.json", "w") as f:
+            json.dump(fb, f, indent=2, sort_keys=True)
+    test("two consecutive steady-state builds are structurally identical "
+         "(timestamps free to tick)",
+         fa == fb,
+         "rebuild not structurally stable "
+         "(stripped pair dumped to /tmp/spine_meta_determinism_*.json)")
+
+    # --- 7. Open-world law ---
+    print("\n--- 7. Open-world law ---")
+    lost = pre_ids - {e["id"] for e in doc["entities"]}
+    test("every pre-existing entity survives the rebuild", not lost,
+         f"lost: {sorted(lost)[:4]}")
+
+    print(f"\n{'=' * 47}")
+    print(f"RESULTS: {PASS} pass, {FAIL} fail")
+    sys.exit(1 if FAIL else 0)
+
+
+if __name__ == "__main__":
+    main()

src/rune/canary_tui_transport.py

@@ -0,0 +1,174 @@
+#!/usr/bin/env python3
+"""canary_tui_transport.py — H4 slice 1 battery (T4.5, contract
+BUILDER-2026-10-04T10:32:00Z-cli).
+
+The TUI transport seam contract: InProcessTransport and V1Transport answer
+the TUI's four-method call set EQUIVALENTLY against the same stub core —
+V1 through the real HTTP stack (core_server), InProcess against the stub
+operator directly. And the default is inprocess: the seam changes nothing
+until RUNE_TUI_TRANSPORT=v1 opts in.
+
+Sections:
+  1. /v1 surface carries the TUI endpoints (conversation + approvals)
+  2. transport factory defaults to inprocess (zero behavior change)
+  3. four-method equivalence (send_task, get_status,
+     get_conversation_window, resolve_pending_approval)
+  4. approval boolean round-trip both ways (True and False)
+  5. V1 transport against a dead core degrades loudly, never silently
+
+Run: python3 src/rune/canary_tui_transport.py
+"""
+
+from __future__ import annotations
+
+import json
+import os
+import subprocess
+import sys
+import threading
+import urllib.error
+import urllib.request
+from pathlib import Path
+
+REPO = Path(__file__).resolve().parents[2]
+sys.path.insert(0, str(REPO / "src"))
+
+PASS = 0
+FAIL = 0
+
+
+def test(name: str, ok: bool, detail: str = "") -> None:
+    global PASS, FAIL
+    if ok:
+        PASS += 1
+        print(f"  ✓ {name}")
+    else:
+        FAIL += 1
+        print(f"  ✗ {name} — {detail}")
+
+
+class StubOperator:
+    """The TUI call set, canned."""
+
+    def get_status(self):
+        return {"identity": "rune", "role": "operator", "current_task": None,
+                "active_model": "stub-model", "tasks_pending": 1,
+                "tasks_running": 0, "tasks_completed": 2}
+
+    def send_task(self, description, model=None, channel="operator"):
+        return {"task_id": "task-stub-1", "status": "completed",
+                "user_text": f"stub answer to: {description}",
+                "model": model or "stub-model", "success": True,
+                "degraded": []}
+
+    def conversation_window(self, channel="operator", n=8):
+        return [{"role": "user", "content": "earlier question",
+                 "channel_id": channel},
+                {"role": "assistant", "content": "earlier answer",
+                 "channel_id": channel}][:n]
+
+    def resolve_pending_approval(self, approved):
+        return {"resolved": bool(approved), "approval_id": "appr-stub-1"}
+
+
+def http(method: str, url: str, body: dict | None = None):
+    data = json.dumps(body).encode() if body is not None else None
+    req = urllib.request.Request(url, data=data, method=method,
+                                 headers={"Content-Type": "application/json"})
+    try:
+        with urllib.request.urlopen(req, timeout=10) as resp:
+            return resp.status, resp.read().decode()
+    except urllib.error.HTTPError as e:
+        return e.code, e.read().decode()
+
+
+def main() -> int:
+    print("=" * 47)
+    print("canary_tui_transport — H4 slice 1 transport seam battery")
+    print("=" * 47)
+
+    from rune import core_server  # noqa: E402
+
+    server = core_server.make_server("127.0.0.1", 0, StubOperator())
+    port = server.server_address[1]
+    t = threading.Thread(target=server.serve_forever, daemon=True)
+    t.start()
+    base = f"http://127.0.0.1:{port}"
+
+    # ── 1. /v1 surface carries the TUI endpoints ──────────────────────────
+    print("\n--- 1. TUI endpoints on the /v1 surface ---")
+    s, raw = http("GET", f"{base}/v1/conversation?channel=operator&n=8")
+    body = json.loads(raw) if s == 200 else {}
+    test("GET /v1/conversation returns the window",
+         s == 200 and isinstance(body.get("messages"), list)
+         and body["messages"][0]["role"] == "user",
+         f"status={s} body={raw[:140]!r}")
+
+    s, raw = http("POST", f"{base}/v1/approvals/resolve", {"approved": True})
+    body = json.loads(raw) if s == 200 else {}
+    test("POST /v1/approvals/resolve round-trips True",
+         s == 200 and body.get("resolved") is True,
+         f"status={s} body={raw[:140]!r}")
+
+    # ── 2. factory default ────────────────────────────────────────────────
+    print("\n--- 2. Factory default ---")
+    from rune import tui_transport  # noqa: E402
+
+    os.environ.pop("RUNE_TUI_TRANSPORT", None)
+    default_transport = tui_transport.get_transport()
+    test("default transport is in-process (zero behavior change)",
+         isinstance(default_transport, tui_transport.InProcessTransport),
+         type(default_transport).__name__)
+
+    # ── 3. four-method equivalence ────────────────────────────────────────
+    print("\n--- 3. Four-method equivalence ---")
+    inproc = tui_transport.InProcessTransport(operator=StubOperator())
+    v1 = tui_transport.V1Transport(base)
+
+    py_status = inproc.get_status()
+    v1_status = v1.get_status()
+    test("get_status equivalent", py_status == v1_status,
+         f"inproc={py_status!r} v1={v1_status!r}")
+
+    py_task = inproc.send_task("the canned question", model="stub-model",
+                               channel="operator")
+    v1_task = v1.send_task("the canned question", model="stub-model",
+                           channel="operator")
+    test("send_task equivalent (rune block carried)",
+         py_task == v1_task,
+         f"inproc={py_task!r}\n  v1={v1_task!r}")
+
+    py_win = inproc.get_conversation_window("operator", n=8)
+    v1_win = v1.get_conversation_window("operator", n=8)
+    test("get_conversation_window equivalent (list shape preserved)",
+         py_win == v1_win and isinstance(v1_win, list),
+         f"inproc={py_win!r} v1={v1_win!r}")
+
+    # ── 4. approval boolean round-trips ───────────────────────────────────
+    print("\n--- 4. Approval round-trips ---")
+    for value in (True, False):
+        py_r = inproc.resolve_pending_approval(value)
+        v1_r = v1.resolve_pending_approval(value)
+        test(f"resolve_pending_approval({value}) equivalent",
+             py_r == v1_r and v1_r.get("resolved") is value,
+             f"inproc={py_r!r} v1={v1_r!r}")
+
+    # ── 5. dead core degrades loudly ──────────────────────────────────────
+    print("\n--- 5. Dead core honesty ---")
+    dead = tui_transport.V1Transport("http://127.0.0.1:1")
+    try:
+        dead.get_status()
+        test("dead core raises (never a silent empty status)", False,
+             "returned without error")
+    except Exception as e:  # noqa: BLE001 — the battery asserts the class, not the subtype
+        test("dead core raises (never a silent empty status)", True,
+             type(e).__name__)
+
+    server.shutdown()
+    print(f"\n{'=' * 47}")
+    print(f"RESULTS: {PASS} pass, {FAIL} fail")
+    return 1 if FAIL else 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())

src/rune/capability_broker.py

@@ -586,8 +586,33 @@ def build_cards():
     return cards
 
 
+def _cs_core():
+    """The Rust capability_scoring core when available (strangler: Python
+    fallback is load-bearing). RUNE_CAPABILITY_CORE=python pins the fallback."""
+    if os.environ.get("RUNE_CAPABILITY_CORE", "auto") == "python":
+        return None
+    try:
+        from rune import cs_loader
+    except Exception:  # noqa: BLE001 — any loader failure means fallback, never a broken call
+        return None
+    try:
+        return cs_loader if cs_loader.available() else None
+    except Exception:  # noqa: BLE001 — availability probe must never crash the fallback
+        return None
+
+
 def score_card(card, query):
-    """Score a capability card against a query. Deterministic keyword matching."""
+    """Score a capability card against a query. Deterministic keyword matching.
+
+    H3 slice 4: delegates to the Rust core when built (Python fallback)."""
+    core = _cs_core()
+    if core is not None:
+        return core.score_card(card, query)
+    return _py_score_card(card, query)
+
+
+def _py_score_card(card, query):
+    """Python core of score_card (parity oracle for the Rust core)."""
     query_low = query.lower()
     query_words = set(re.findall(r"\w+", query_low))
 

src/rune/capability_fit.py

@@ -211,10 +211,36 @@ def discover_candidates(doc: dict, req: CapabilityRequirement) -> list[dict]:
 # ── fit evaluation ─────────────────────────────────────────────────────────
 
 
+def _cs_core():
+    """The Rust capability_scoring core when available (strangler: Python
+    fallback is load-bearing). RUNE_CAPABILITY_CORE=python pins the fallback."""
+    import os
+    if os.environ.get("RUNE_CAPABILITY_CORE", "auto") == "python":
+        return None
+    try:
+        from rune import cs_loader
+    except Exception:  # noqa: BLE001 — any loader failure means fallback, never a broken call
+        return None
+    try:
+        return cs_loader if cs_loader.available() else None
+    except Exception:  # noqa: BLE001 — availability probe must never crash the fallback
+        return None
+
+
 def evaluate_fit(req: CapabilityRequirement, candidate: dict) -> dict:
     """DETERMINISTIC fit of one candidate against a requirement.
     fit: EXACT | PARTIAL | INCOMPATIBLE | UNKNOWN.
-    Names are ignored; contracts + environment + health decide."""
+    Names are ignored; contracts + environment + health decide.
+
+    H3 slice 4: delegates to the Rust core when built (Python fallback)."""
+    core = _cs_core()
+    if core is not None:
+        return core.evaluate_fit(req.contracts, candidate)
+    return _py_evaluate_fit(req, candidate)
+
+
+def _py_evaluate_fit(req: CapabilityRequirement, candidate: dict) -> dict:
+    """Python core of evaluate_fit (parity oracle for the Rust core)."""
     missing_contracts = sorted(set(req.contracts) - set(candidate["provides"]))
     covered = len(req.contracts) - len(missing_contracts)
 

src/rune/cc_loader.py

@@ -0,0 +1,180 @@
+#!/usr/bin/env python3
+"""ctypes loader for the Rust cognition_core (R2 W3.1).
+
+Contract BUILDER-2026-10-05T07:19:27Z-cli. Pure deterministic kernels;
+the env gate arrives as a string input (no-clock law, no env access in
+Rust). Override with CC_RUST_LIB (a FILE path).
+"""
+
+from __future__ import annotations
+
+import ctypes
+import json
+import os
+from pathlib import Path
+
+_REPO = Path(__file__).resolve().parents[2]
+_CRATE_DIR = _REPO / "src" / "rust" / "cognition_core"
+_LIB_PATH = Path(
+    os.environ.get("CC_RUST_LIB", _CRATE_DIR / "target" / "release" / "libcognition_core.so"))
+
+_lib = None
+
+
+def core():
+    """The shared kernel probe (strangler law): the delegation entry the
+    kernel-consuming modules use. RUNE_COGNITION_CORE=python pins the
+    fallback — THIS is where the pin is honored, so every consumer gets it
+    (a module-local probe that ignores the pin silently defeats it)."""
+    import os
+
+    if os.environ.get("RUNE_COGNITION_CORE", "auto") == "python":
+        return None
+    try:
+        return _load()
+    except Exception:  # noqa: BLE001 — build/loader failures mean fallback
+        return None
+
+
+def available() -> bool:
+    return _LIB_PATH.is_file()
+
+
+def _load() -> ctypes.CDLL:
+    global _lib
+    if _lib is not None:
+        return _lib
+    if not _LIB_PATH.exists():
+        raise FileNotFoundError(f"cognition_core not built: {_LIB_PATH}")
+    lib = ctypes.CDLL(str(_LIB_PATH))
+    lib.cc_free_string.argtypes = [ctypes.c_void_p]
+    lib.cc_free_string.restype = None
+    for sym in ("cc_default_estimator", "cc_default_budget",
+                "cc_default_memory_budget", "cc_memory_disabled",
+                "cc_persona_lex", "cc_persona_overlap", "cc_persona_decide",
+                "cc_drift_check", "cc_identity_prompt", "cc_growth_near_dup",
+                "cc_growth_profile", "cc_pins_recall", "cc_tier_get",
+                "cc_tier_promote", "cc_tier_demote", "cc_witness_extract_topic",
+                "cc_witness_signals", "cc_safety_get_params",
+                "cc_safety_update_pattern", "cc_abstraction_extract_facts"):
+        fn = getattr(lib, sym)
+        fn.argtypes = [ctypes.c_char_p]
+        fn.restype = ctypes.c_void_p
+    _lib = lib
+    return lib
+
+
+def _call(sym: str, payload: dict):
+    lib = _load()
+    ptr = getattr(lib, sym)(json.dumps(payload).encode("utf-8"))
+    if not ptr:
+        raise RuntimeError(f"{sym} returned null")
+    try:
+        text = ctypes.cast(ptr, ctypes.c_char_p).value.decode("utf-8")
+    finally:
+        lib.cc_free_string(ptr)
+    env = json.loads(text)
+    if not env.get("ok"):
+        raise RuntimeError(f"{sym} core error: {env.get('err')}")
+    return env["value"]
+
+
+def default_estimator(text: str) -> int:
+    return int(_call("cc_default_estimator", {"text": text}))
+
+
+def default_budget(window: int) -> int:
+    return int(_call("cc_default_budget", {"window": window}))
+
+
+def default_memory_budget(window) -> int:
+    return int(_call("cc_default_memory_budget", {"window": window}))
+
+
+def memory_disabled() -> bool:
+    import os
+    return bool(_call("cc_memory_disabled",
+                      {"value": os.environ.get("RUNE_MEMORY_OFF")}))
+def persona_lex(text) -> list:
+    return _call("cc_persona_lex", {"text": text})
+
+
+def persona_overlap(a: list, b: list) -> float:
+    return float(_call("cc_persona_overlap", {"a": a, "b": b}))
+
+
+def persona_decide(text: str, rules: list, permissive: bool,
+                   sem_scores: list | None = None) -> dict:
+    return _call("cc_persona_decide", {
+        "text": text, "rules": rules, "permissive": permissive,
+        "sem_scores": sem_scores})
+
+
+
+def drift_check(text: str, patterns: list) -> list:
+    return _call("cc_drift_check", {"text": text, "patterns": patterns})
+
+
+def identity_prompt(pronouns: dict, self_awareness: dict, anchors: dict,
+                    embodiment: list) -> str:
+    return _call("cc_identity_prompt", {
+        "pronouns": pronouns, "self_awareness": self_awareness,
+        "anchors": anchors, "embodiment": embodiment})
+
+
+def growth_near_dup(a: str, b: str) -> bool:
+    return bool(_call("cc_growth_near_dup", {"a": a, "b": b}))
+
+
+def growth_profile(state: dict, order: list, entry_chars: int,
+                   max_tokens: int) -> list:
+    return _call("cc_growth_profile", {
+        "state": state, "order": order, "entry_chars": entry_chars,
+        "max_tokens": max_tokens})
+
+
+def pins_recall(pins: list, term: str, limit: int = 4) -> list:
+    return _call("cc_pins_recall", {"pins": pins, "term": term, "limit": limit})
+
+
+def tier_get(entry: dict, now: str, hot_days: float = 7.0,
+             warm_days: float = 30.0) -> str:
+    return _call("cc_tier_get", {"entry": entry, "now": now,
+                                 "hot_days": hot_days, "warm_days": warm_days})
+
+
+def tier_promote(entry: dict, now: str, hot_days: float = 7.0,
+                 warm_days: float = 30.0) -> str:
+    return _call("cc_tier_promote", {"entry": entry, "now": now,
+                                     "hot_days": hot_days, "warm_days": warm_days})
+
+
+def tier_demote(entry: dict, now: str, hot_days: float = 7.0,
+                warm_days: float = 30.0) -> str:
+    return _call("cc_tier_demote", {"entry": entry, "now": now,
+                                    "hot_days": hot_days, "warm_days": warm_days})
+
+
+def witness_extract_topic(text: str, stopwords: list) -> list:
+    return _call("cc_witness_extract_topic",
+                 {"text": text, "stopwords": stopwords})
+
+
+def witness_signals(message: str, tables: dict, tool_error: str = "",
+                    task_status: str = "", recent_topics: list | None = None) -> dict:
+    return _call("cc_witness_signals", {
+        "message": message, "tables": tables, "tool_error": tool_error,
+        "task_status": task_status, "recent_topics": recent_topics or []})
+
+
+def safety_get_params(rows: list) -> dict:
+    return _call("cc_safety_get_params", {"rows": rows})
+
+
+def safety_update_pattern(rows: list, pattern: str) -> list:
+    return _call("cc_safety_update_pattern", {"rows": rows, "pattern": pattern})
+
+
+def abstraction_extract_facts(text: str, stopwords: list, min_len: int = 10):
+    return _call("cc_abstraction_extract_facts", {
+        "text": text, "stopwords": stopwords, "min_len": min_len})

src/rune/claim_audit.py

@@ -34,16 +34,38 @@ Usage:
   claim_audit.py verify "<claim>"                    # ledger lookup
   claim_audit.py audit "<draft text>"                # full pipeline, JSON
   claim_audit.py report                              # claimed-vs-verified stats
+
+Phase G strangler slice 2 (port 6 — FINAL): the decision skeleton (verify
+verdict tree, report aggregation, clean fold, evidence-term stoplist) is
+served IN-PROCESS by the Rust `evidence_provenance` cdylib through
+ep_loader.py — parity 17/17 proven vs this module's Python vintage. The
+regex engine stays Python (zero-dep crate law): PATTERNS scan + sentence
+extraction + degrade templates + reframe are regex machinery. I/O (journal)
+stays Python. Timestamps pinned by the shim. API/CLI/PLUGIN unchanged.
+
+VINTAGE MERGE (disclosed on #2449): the deployed scripts vintage carried the
+SYMMETRY GUARD (research_lens.symmetry_check integration, 2026-08-15) which
+src/rune's vintage lacked — preserved here (feature-preserving merge; the
+guard is load-bearing behavior). Also REPAIRED: the TUI's `scan_text()`
+consumer (rune_tui.py:3752, expecting {degraded: [...], claims: [...]}) had
+NO implementation in EITHER vintage (silent try/except death since the TUI
+call landed) — scan_text() is provided now as a first-class surface.
 """
 
 import argparse
 import json
-import logging
 import os
 import re
 import sys
 from datetime import datetime, timezone
 
+# ── Rust core wiring (slice-2 port-6 shim pattern) ──────────────────────────
+_CRATE_DIR = "/mnt/workdrive/rune/src/rust/evidence_provenance"
+if _CRATE_DIR not in sys.path:
+    sys.path.insert(0, _CRATE_DIR)
+import ep_loader  # noqa: E402  (loads target/release cdylib)
+
+sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
 import memory_env
 
 MEM_DIR = memory_env.memory_dir()
@@ -54,7 +76,7 @@ _SD = os.path.dirname(os.path.abspath(__file__))
 if _SD not in sys.path:
     sys.path.insert(0, _SD)
 
-logger = logging.getLogger(__name__)
+logger = __import__("logging").getLogger(__name__)
 
 # Lazy import: warm_neuron_store is imported inside functions that use it
 # to avoid crashing the entire module on import if the dependency is missing.
@@ -75,10 +97,7 @@ def _get_warm_neuron_store():
 
 
 # ---------------------------------------------------------------------------
-# Strong-claim patterns. Grouped by type so we can degrade per-type on
-# repeated failure. `comparative` is the highest-priority (the "we exceed X"
-# class). Regexes are deliberately conservative: they flag CLAIM SHAPES, not
-# innocent uses of words.
+# Strong-claim patterns (unchanged — regex machinery stays Python).
 # ---------------------------------------------------------------------------
 PATTERNS = [
     {
@@ -184,6 +203,22 @@ def scan(text):
     return claims
 
 
+def scan_text(text):
+    """TUI consumer surface (rune_tui.py:3752): run the pipeline over a text
+    snippet and return {degraded: [...], claims: [...], clean: bool}.
+
+    REPAIRED: neither vintage implemented this — the TUI call died silently
+    in try/except since it landed. Semantics: audit the text, list degraded
+    claims (verdict != PASS), surface them to the TUI.
+    """
+    if not text:
+        return {"degraded": [], "claims": [], "clean": True}
+    res = audit(text)
+    degraded = [r for r in res.get("claims", []) if r.get("verdict") != "PASS"]
+    return {"degraded": degraded, "claims": res.get("claims", []),
+            "clean": res.get("clean", True), "rewritten": res.get("rewritten", "")}
+
+
 # ---------------------------------------------------------------------------
 # 3. Evidence-ledger lookup
 # ---------------------------------------------------------------------------
@@ -202,7 +237,7 @@ def _graph_has(term):
             return row is not None
         finally:
             db.close()
-    except Exception:
+    except Exception:  # noqa: BLE001 — ledger lookup degrades to no-evidence by design; a broken graph must not crash claim verification
         return False
 
 
@@ -214,7 +249,7 @@ def _warm_has(term):
         if wns is None:
             return False
         return wns.neuron_has(term)
-    except Exception:
+    except Exception:  # noqa: BLE001 — warm-block lookup degrades to no-evidence by design; a broken store must not crash claim verification
         return False
 
 
@@ -231,6 +266,9 @@ def verify(claim):
     it. Those claims only PASS if they carry a measurable anchor (a number, a
     probe run, a benchmark), because that's the kind of claim that needs both
     a baseline and a measurement (per the claim-audit research).
+
+    Decision tree served by the Rust core (parity-proven); the regex flag
+    derivation + ledger lookups stay Python.
     """
     low = claim.lower()
     is_comparative = bool(
@@ -248,19 +286,16 @@ def verify(claim):
             low,
         )
     )
-    # Comparative claims need a MEASURABLE anchor, not just a mention.
-    if is_comparative and not is_quantified:
-        return "DEGRADE", 0
-    # Extract candidate ledger terms: the subject noun phrase.
+    # Candidate ledger terms: filtered by the Rust stoplist/length rule.
     terms = re.findall(r"\b([A-Za-z][A-Za-z ]{3,30})\b", claim)
+    terms = ep_loader.ca_evidence_terms(terms)
     hits = 0
     for t in terms:
-        if len(t) < 4 or t.lower() in ("this is", "that is", "for the"):
-            continue
         if _graph_has(t) or _warm_has(t):
             hits += 1
-    if hits >= 1:
-        return "PASS", hits
+    gate = ep_loader.ca_verify_gate(is_comparative, is_quantified, hits, True)
+    if gate["verdict"] == "PASS":
+        return "PASS", gate["evidence_hits"]
     if re.search(r"\b(exceed|surpass|beat|beyond)\b", low):
         return "DEGRADE", 0  # comparative with no ledger support = the exact case
     return "DEGRADE", 0
@@ -322,11 +357,7 @@ def report():
         return {"total": 0, "by_verdict": {}, "by_type": {}}
     with open(JOURNAL) as f:
         rows = [json.loads(l) for l in f if l.strip()]
-    by_verdict, by_type = {}, {}
-    for r in rows:
-        by_verdict[r.get("verdict", "?")] = by_verdict.get(r.get("verdict", "?"), 0) + 1
-        by_type[r.get("type", "?")] = by_type.get(r.get("type", "?"), 0) + 1
-    return {"total": len(rows), "by_verdict": by_verdict, "by_type": by_type}
+    return ep_loader.ca_report_aggregate(rows)
 
 
 # ---------------------------------------------------------------------------
@@ -336,6 +367,19 @@ def audit(draft):
     """Run the full active gate over a draft. Returns verdicts + rewritten text."""
     claims = scan(draft)
     if not claims:
+        # SYMMETRY GUARD (deployed-vintage feature, preserved in the merge):
+        # even with no strong claim, check the draft for asymmetric-skepticism
+        # markers so the baloney detector cannot be applied one-sidedly.
+        try:
+            sys.path.insert(0, _SD)
+            from research_lens import symmetry_check
+            sym = symmetry_check(draft)
+            if sym.get("verdict") == "ASYMMETRY-FLAG":
+                return {"claims": [], "rewritten": draft, "clean": False,
+                        "symmetry": sym}
+        except Exception:  # noqa: BLE001 — guard is never-fatal by design (deployed-vintage discipline); audit output degrades to no-symmetry, not silence
+            logger.debug("symmetry_check unavailable/failed — continuing without symmetry", exc_info=True)
+            pass
         return {"claims": [], "rewritten": draft, "clean": True}
     rewritten = draft
     results = []
@@ -357,9 +401,23 @@ def audit(draft):
             "rewrite": new_text,
             "note": note,
         }
+        # SYMMETRY GUARD per-claim (deployed-vintage feature, preserved):
+        result["symmetry"] = _symmetry_safe(c["claim"])
         results.append(result)
         journal({"type": c["type"], "claim": c["claim"][:160], "verdict": verdict, "evidence_hits": hits})
-    return {"claims": results, "rewritten": rewritten, "clean": all(r["verdict"] == "PASS" for r in results)}
+    return {"claims": results, "rewritten": rewritten,
+            "clean": ep_loader.ca_audit_clean(results)}
+
+
+def _symmetry_safe(text):
+    """symmetry_check wrapper — never fatal (deployed-vintage discipline)."""
+    try:
+        from research_lens import symmetry_check
+        return symmetry_check(text)
+    except Exception:  # noqa: BLE001 — wrapper is never-fatal by design; a symmetry outage must not kill claim auditing
+        logger.debug("symmetry_check unavailable/failed — no symmetry annotation", exc_info=True)
+        pass
+    return {}
 
 
 def handle_hook(event, data=None):
@@ -412,11 +470,6 @@ if __name__ == "__main__":
 # ---------------------------------------------------------------------------
 # Plugin declaration — self-registers with the plugin registry.
 # ---------------------------------------------------------------------------
-
-
-# ---------------------------------------------------------------------------
-# Hook handler — called by the microkernel when an event fires.
-# ---------------------------------------------------------------------------
 PLUGIN = {
     "name": "claim_audit",
     "version": "1.0.0",
@@ -427,4 +480,4 @@ PLUGIN = {
     "provides": ["claim_audit"],
     "priority": 40,
     "auto_activate": True,
-}
+}

src/rune/construction_commands.py

@@ -171,3 +171,98 @@ def _accept(command_id: str, construction_id: str, correlation_id: str,
             "recorded_at": time.strftime("%Y-%m-%dT%H:%M:%SZ",
                                          time.gmtime()),
             "idempotent_replay": False}
+
+
+def dispatch(command_type: str, *, construction_id: str,
+             correlation_id: str = "", command_id: str = "",
+             payload: dict | None = None,
+             store_path: str = "store/scaffold") -> dict:
+    """The SERVING layer (T5.15 slice 2): validate the command against the
+    canonical store, execute the accepted intent through the Construction
+    Interface, and return the interface's envelope with the command
+    provenance attached.
+
+    Single entry point for `rune scaffold <command>` (the Go proxy) and
+    any future transport. Idempotency: a repeated command_id replays the
+    recorded outcome without re-executing.
+
+    Refusal still returns success=False envelope? NO — a refused command
+    is a VALID protocol outcome: the envelope carries accepted=False and
+    success=True (the dispatch itself worked; the lifecycle refused the
+    intent). Execution failures carry success=False.
+    """
+    iface_path = None
+    if store_path and store_path != "store/scaffold":
+        iface_path = store_path
+    try:
+        from rune import construction_interface as ci
+
+        # store_path carries the serving layer's "path|project_id" contract
+        # (a bare path = last segment is the project id, matching how the
+        # Go proxy and the interface's own default name it).
+        if iface_path:
+            path_part, _, proj_part = iface_path.partition("|")
+            proj = proj_part or path_part.rstrip("/").split("/")[-1]
+            iface = ci.ConstructionInterface(builder="substrate",
+                                             project_store=path_part,
+                                             project_id=proj)
+        else:
+            iface = ci.ConstructionInterface(builder="substrate")
+    except Exception as exc:  # noqa: BLE001 — serving failure is an envelope, not a crash
+        return {"accepted": False, "executed": False,
+                "success": False, "error": f"serving unavailable: {exc}"[:200],
+                "command_type": command_type,
+                "construction_id": construction_id}
+
+    intent = command(command_type, construction_id=construction_id,
+                     correlation_id=correlation_id, command_id=command_id,
+                     payload=payload, scaffold=iface.scaffold)
+    if intent.get("idempotent_replay"):
+        # Repeated delivery: return the recorded outcome WITHOUT executing
+        # again (the ledger's whole point). The first execution's envelope
+        # is not re-derivable here, so the replay carries the intent and
+        # the flag — the caller knows the effect already happened.
+        return {"accepted": True, "executed": False,
+                "success": True, "idempotent_replay": True,
+                "op": intent.get("op"),
+                "command_type": command_type,
+                "construction_id": construction_id,
+                "correlation_id": intent.get("correlation_id", ""),
+                "command_id": intent.get("command_id", "")}
+    if not intent.get("accepted"):
+        return {"accepted": False, "executed": False, "success": True,
+                "reason": intent.get("reason"),
+                "command_type": command_type,
+                "construction_id": construction_id,
+                "correlation_id": intent.get("correlation_id", ""),
+                "command_id": intent.get("command_id", ""),
+                "idempotent_replay": intent.get("idempotent_replay", False)}
+
+    op = intent["op"]
+    args = intent["args"]
+    ops = {
+        "resume": lambda: iface.resume(args["contract_id"]),
+        "transition": lambda: iface.transition(
+            args["contract_id"], args["phase"],
+            evidence_ref=f"command:{intent['command_id']}"
+            + (f" approved_by:{args['approved_by']}" if args.get("approved_by") else "")),
+        "amend_scope": lambda: iface.amend_scope(
+            args["contract_id"], args["add_paths"],
+            reason=args.get("reason", "substrate context"),
+            authority=args.get("authority", "substrate")),
+    }
+    fn = ops.get(op)
+    if fn is None:
+        return {"accepted": True, "executed": False, "success": False,
+                "error": f"no executor for op {op!r}",
+                "command_type": command_type,
+                "construction_id": construction_id}
+    env = fn()
+    return {"accepted": True, "executed": True,
+            "success": bool(env.get("success")),
+            "envelope": env,
+            "command_type": command_type,
+            "construction_id": construction_id,
+            "correlation_id": intent.get("correlation_id", ""),
+            "command_id": intent.get("command_id", ""),
+            "idempotent_replay": False}

src/rune/construction_decision.py

@@ -125,6 +125,73 @@ _SURFACE_UI = "ui:"
 _SURFACE_REGION = "region:"
 _SURFACE_CONTRACT = "contract:"
 _SURFACE_MODULE = "module:"
+# H-meta entity classes (spine meta-scaffold, 567fd39): the spine models
+# these kinds as first-class entities, so contract scope resolution must
+# recognize them as structural ids too — an unrecognized kind can never
+# close as correctly_predicted (T4.7 row-1 flag).
+_SURFACE_RUST_CRATE = "rust-crate:"
+_SURFACE_GO_SURFACE = "go-surface:"
+_SURFACE_CONFIG = "config:"
+_SURFACE_WORKFLOW = "workflow:"
+
+
+def language_placement(project: str, characteristics: list[str]) -> dict:
+    """The protocol's language-placement verdict (R2 Wave 1, Nick's addition):
+    rune units get the Go/Rust dichotomy rule; other projects get a
+    characteristic-based fit assessment. Deterministic, evidence-labeled,
+    never silent. Delegates to the Rust scaffold_core when built
+    (Python fallback below — strangler law)."""
+    core = _sc_core()
+    if core is not None:
+        return core.language_placement(project, characteristics)
+    return _py_language_placement(project, characteristics)
+
+
+def _sc_core():
+    """The Rust scaffold_core when available (R2 Wave 1 strangler).
+    RUNE_SCAFFOLD_CORE=python pins the fallback."""
+    import os
+    if os.environ.get("RUNE_SCAFFOLD_CORE", "auto") == "python":
+        return None
+    try:
+        from rune import sc_loader
+    except Exception:  # noqa: BLE001 — any loader failure means fallback, never a broken call
+        return None
+    try:
+        return sc_loader if sc_loader.available() else None
+    except Exception:  # noqa: BLE001 — availability probe must never crash the fallback
+        return None
+
+
+def _py_language_placement(project: str, characteristics: list[str]) -> dict:
+    """Python core of language_placement (parity oracle)."""
+    go_signals = ("network", "http", "socket", "server", "dispatch",
+                  "reactive", "user-facing", "turn-time")
+    rust_signals = ("deterministic", "stateful", "storage", "cognition",
+                    "memory", "compute", "parity", "ledger")
+    chars = [c.lower() for c in characteristics]
+    go_hits = [s for s in go_signals if any(s in c for c in chars)]
+    rust_hits = [s for s in rust_signals if any(s in c for c in chars)]
+    if project.lower() == "rune":
+        if go_hits and not rust_hits:
+            placement, rule = "go", "rune dichotomy: reactive/initiating markers"
+        elif rust_hits and not go_hits:
+            placement, rule = "rust", "rune dichotomy: deterministic/state markers"
+        elif rust_hits and go_hits:
+            placement, rule = "hybrid", "rune dichotomy: both marker classes — a contracted membrane junction"
+        else:
+            placement, rule = "rust", "rune dichotomy: pure compute defaults to the deterministic backend"
+    else:
+        if go_hits and not rust_hits:
+            placement, rule = "go", "characteristic fit: reactive/network profile"
+        elif rust_hits and not go_hits:
+            placement, rule = "rust", "characteristic fit: deterministic/state profile"
+        elif rust_hits:
+            placement, rule = "hybrid", "characteristic fit: mixed profile — split at the membrane"
+        else:
+            placement, rule = "unassessed", "no placement signals — the unit needs characteristics recorded"
+    return {"placement": placement, "rule": rule,
+            "evidence": {"go_signals": go_hits, "rust_signals": rust_hits}}
 
 
 def classify_surface(surface: str) -> str:
@@ -141,6 +208,10 @@ def classify_surface(surface: str) -> str:
             _SURFACE_CONTRACT,
             _SURFACE_MODULE,
             _SURFACE_CAPABILITY,
+            _SURFACE_RUST_CRATE,
+            _SURFACE_GO_SURFACE,
+            _SURFACE_CONFIG,
+            _SURFACE_WORKFLOW,
         )
     ):
         return "structural_entity"

src/rune/construction_interface.py

@@ -36,6 +36,7 @@ from typing import Any
 
 import json
 import sys
+import uuid
 from pathlib import Path
 
 from rune import structural_store as ss
@@ -88,6 +89,39 @@ def _envelope(
     return env
 
 
+def _to_stage_check(spec: dict):
+    """One guard spec → a stage_guards.StageCheck (T5.15 wire)."""
+    from rune import stage_guards as sg
+
+    return sg.StageCheck(
+        name=str(spec.get("name", "guard")),
+        kind=str(spec.get("kind", "assert")),
+        argv=spec.get("argv"),
+        output_pattern=str(spec.get("output_pattern", "")),
+        path=str(spec.get("path", "")),
+        check=spec.get("check"),
+        description=str(spec.get("description", "")),
+    )
+
+
+def _guard_specs_from_obligations(c: dict) -> list[dict]:
+    """The contract's guard declarations: verification_obligations rows
+    shaped `guard:<json-spec>` (the decision path records them; anything
+    else stays a free-text obligation for the projection). JSONDecodeError
+    → skipped with no invented facts."""
+    specs: list[dict] = []
+    for item in (c.get("identities") or {}).get("verification_obligations", []) or []:
+        if not isinstance(item, str) or not item.startswith("guard:"):
+            continue
+        try:
+            spec = json.loads(item[6:])
+            if isinstance(spec, dict):
+                specs.append(spec)
+        except json.JSONDecodeError:
+            continue
+    return specs
+
+
 class ConstructionInterface:
     """The builder-facing construction lifecycle for ONE project target.
 
@@ -291,6 +325,13 @@ class ConstructionInterface:
                     "transition": {
                         "phase": {"type": "str", "required": True,
                                   "allowed": list(sc.PHASES)},
+                        "evidence_ref": {"type": "str", "required": False},
+                        "guard_checks": {
+                            "type": "list[dict] | None", "required": False,
+                            "notes": ("stage-guard specs run on the "
+                                      "completion edges (verifying/closed); "
+                                      "a failure BLOCKS with "
+                                      "VERIFICATION_FAILED — T5.15 wire")},
                     },
                     "close": {
                         "observed_evidence": {
@@ -381,7 +422,8 @@ class ConstructionInterface:
             errors.append({"error": Errors.INSUFFICIENT_EVIDENCE, "detail": trace["rationale"][:200]})
         contract = None
         if generate and trace["resolution"] not in ("INSUFFICIENT_EVIDENCE",):
-            cid = contract_id or f"BUILDER-{ss.now()}-{self.builder}"
+            cid = (contract_id
+                   or f"BUILDER-{ss.now()}-{uuid.uuid4().hex[:6]}-{self.builder}")
             cd.generate_contract(
                 self.scaffold,
                 doc,
@@ -607,8 +649,57 @@ class ConstructionInterface:
             warnings=warnings,
         )
 
-    def transition(self, contract_id: str, phase: str, *, evidence_ref: str = "") -> dict:
+    def transition(self, contract_id: str, phase: str, *, evidence_ref: str = "",
+                   guard_checks: list[dict] | None = None) -> dict:
+        """Move a contract phase. Completion-wave slice (T5.15, the
+        stage_guards wire): entering `verifying` and `closed` runs the
+        §15F/§15G guards — readiness/exit StageChecks and test-truth
+        verification — when the contract declares them
+        (identities.verification_obligations carries `guard:<spec>` rows,
+        or guard_checks passes inline specs).
+
+        guard_checks spec: {"name", "kind": "command"|"path_exists"|"assert",
+        "argv"/"path"/"output_pattern", "check": callable (in-process only),
+        "description"}. A guard failure is a VERIFICATION_FAILED envelope:
+        the phase does NOT move.
+
+        The legality map stays the scaffold's authority; guards ADD evidence
+        obligations on the completion-facing edges (building→verifying,
+        verifying→closed) — a tiny bounded change can pass guards=[] freely.
+        """
         doc = self.scaffold.load()
+        c = self.scaffold.contract(doc, contract_id)
+        if c is None:
+            return _envelope(
+                "transition",
+                success=False,
+                ids={"contract_id": contract_id},
+                errors=[{"error": Errors.UNKNOWN_CONTRACT, "detail": f"no contract {contract_id}"}],
+            )
+        if phase in ("verifying", "closed"):
+            from rune import stage_guards as sg
+
+            specs = guard_checks
+            if specs is None:
+                specs = _guard_specs_from_obligations(c)
+            if specs:
+                stage = sg.StageContract(
+                    stage_id=f"{contract_id}:{phase}",
+                    contract_id=contract_id,
+                    ready_when=[_to_stage_check(s) for s in specs],
+                    done_when=[_to_stage_check(s) for s in specs],
+                )
+                canary = sg.readiness_canary(stage)
+                if canary["verdict"] == "BLOCKED":
+                    return _envelope(
+                        "transition",
+                        success=False,
+                        ids={"contract_id": contract_id},
+                        state={"phase": c.get("phase"), "guard": canary},
+                        errors=[{"error": Errors.VERIFICATION_FAILED,
+                                 "detail": "stage guards blocked the transition",
+                                 "failures": canary["failures"]}],
+                    )
         try:
             self.scaffold.transition_contract(
                 doc, contract_id, phase, evidence_ref=evidence_ref or f"builder:{self.builder}"
@@ -679,21 +770,62 @@ class ConstructionInterface:
         material_closure = self._auto_material_change(
             scope_files or [],
             note=f"contract {contract_id} closed (material change)")
+        continuation = self._programme_continuation(contract_id)
+        state = {
+            "phase": "closed",
+            "material_change_closure": material_closure,
+            "contract_quality": {
+                k: q[k]
+                for k in ("correctly_predicted", "expected_new_observed", "genuinely_unexpected_new", "scope_check")
+                if k in q
+            },
+        }
+        if continuation is not None:
+            state["programme_continuation"] = continuation
         return _envelope(
             "close",
             success=True,
             ids={"contract_id": contract_id},
-            state={
-                "phase": "closed",
-                "material_change_closure": material_closure,
-                "contract_quality": {
-                    k: q[k]
-                    for k in ("correctly_predicted", "expected_new_observed", "genuinely_unexpected_new", "scope_check")
-                    if k in q
-                },
-            },
+            state=state,
         )
 
+    def _programme_continuation(self, contract_id: str) -> dict | None:
+        """T5.15 slice 3 (the programme_continuation wire): after a legal
+        close, any persisted Programme stage bound to this contract is
+        marked COMPLETE and the continuation canary's verdict rides the
+        close envelope — 'task done' ≠ 'programme done', and the next
+        eligible stage is SURFACED, never guessed. No programme bound →
+        None (no continuation block in the envelope). Failures degrade:
+        a broken programme ledger never fails a real closure."""
+        try:
+            from pathlib import Path as _Path
+
+            from rune import programme_continuation as pc
+
+            base = _Path(self.scaffold.current).parent / pc.DEFAULT_PROGRAMME_AREA
+            if not base.is_dir():
+                return None
+            for prog_file in sorted(base.glob("*.json")):
+                prog = pc.Programme.load(base, prog_file.stem)
+                if prog is None:
+                    continue
+                stage = next((s for s in prog.stages
+                              if s.stage_id == contract_id
+                              and s.state != pc.COMPLETE), None)
+                if stage is None:
+                    continue
+                stage.state = pc.COMPLETE
+                stage.result["closed_at_contract"] = contract_id
+                prog.save(base)
+                return {
+                    "programme_id": prog.programme_id,
+                    "stage_marked_complete": contract_id,
+                    "canary": prog.continuation_canary(),
+                }
+        except Exception as exc:  # noqa: BLE001 — ledger failure never fails a closure
+            return {"error": f"programme continuation degraded: {exc}"[:200]}
+        return None
+
     def _auto_material_change(self, scope_files: list[str], *,
                               note: str) -> dict:
         """T21.4 §21.4H (rule 19Q.2): governed construction closes → the
@@ -1019,7 +1151,9 @@ def main(argv=None) -> int:
     if cmd == "verify":
         return _out(iface.verify(args[0], changed_files=(json.loads(args[1]) if len(args) > 1 else None)))
     if cmd == "transition":
-        return _out(iface.transition(args[0], args[1], evidence_ref=args[2] if len(args) > 2 else ""))
+        guard_checks = json.loads(args[3]) if len(args) > 3 else None
+        return _out(iface.transition(args[0], args[1], evidence_ref=args[2] if len(args) > 2 else "",
+                                     guard_checks=guard_checks))
     if cmd == "close":
         return _out(
             iface.close(

src/rune/context_broker.py

@@ -100,19 +100,52 @@ class ContributionBlock:
 def default_estimator(text: str) -> int:
     """Deterministic conservative token estimate: len(text) // 4.
 
-    Bytes/4 over-counts for English prose (the conservative direction).
-    tiktoken would be tighter but is NOT deterministic across builds and
-    is not a dependency — the plan allows either, installer's choice.
+    R2 W3.1: delegates to the Rust cognition_core when built (Python
+    fallback — strangler law; RUNE_COGNITION_CORE=python pins it).
     """
+    core = _cc_core()
+    if core is not None:
+        return core.default_estimator(text or "")
+    return _py_default_estimator(text)
+
+
+def _py_default_estimator(text: str) -> int:
+    """Python oracle (parity floor)."""
     return len(text or "") // 4
 
 
+def _cc_core():
+    """Rust cognition_core when available; RUNE_COGNITION_CORE=python
+    pins the Python fallback (strangler law)."""
+    import os
+    if os.environ.get("RUNE_COGNITION_CORE", "auto") == "python":
+        return None
+    try:
+        from rune import cc_loader
+    except Exception:  # noqa: BLE001 — loader probe failure means fallback
+        return None
+    try:
+        return cc_loader if cc_loader.available() else None
+    except Exception:  # noqa: BLE001 — availability probe never crashes
+        return None
+
+
 def default_budget(window: int) -> int:
     """Input budget = window - max(2048, window//4) - window//20.
 
     Reserves room for the completion (at least 2048 or a quarter of the
     window) plus a 5% safety margin for serving overhead.
+
+    R2 W3.1: delegates to the Rust kernel when built.
     """
+    core = _cc_core()
+    if core is not None:
+        return core.default_budget(window)
+    return _py_default_budget(window)
+
+
+def _py_default_budget(window: int) -> int:
+    """Python oracle (parity floor)."""
     return max(1, window - max(2048, window // 4) - window // 20)
 
 
@@ -127,7 +160,17 @@ def default_memory_budget(window: int | None) -> int:
     ContextBroker owns the FINAL memory budget: the sum of every
     MEMORY_BLOCK_NAMES block may never exceed this, regardless of the
     global input budget. An unknown window falls back to the cap only.
+
+    R2 W3.1: delegates to the Rust kernel when built.
     """
+    core = _cc_core()
+    if core is not None:
+        return core.default_memory_budget(int(window) if window else 0)
+    return _py_default_memory_budget(window)
+
+
+def _py_default_memory_budget(window: int | None) -> int:
+    """Python oracle (parity floor)."""
     if not window or window <= 0:
         return MEMORY_BUDGET_CAP
     return min(MEMORY_BUDGET_CAP, int(window) // 8)
@@ -140,6 +183,18 @@ def memory_disabled() -> bool:
     contribute nothing at all — the trace proves 0 memory tokens.
     """
     value = os.environ.get("RUNE_MEMORY_OFF", "").strip().lower()
+    gate = _py_memory_disabled_value(value)
+    core = _cc_core()
+    if core is not None and gate:
+        # the Rust core gets the RAW value (it trims/lowers itself) and
+        # the Python gate cross-checks — a disagreement is impossible on
+        # parity-proven kernels, and the Python verdict remains authority
+        return bool(core.memory_disabled()) and gate
+    return gate
+
+
+def _py_memory_disabled_value(value: str) -> bool:
+    """Python oracle (parity floor) over the RAW string."""
     return value not in {"", "0", "false", "no", "off"}
 
 

src/rune/core_server.py

@@ -0,0 +1,234 @@
+#!/usr/bin/env python3
+"""core_server.py — stdlib HTTP sidecar exposing the Rune operator surface
+(H2, contract BUILDER-2026-10-04T08:32:43Z-cli).
+
+Go owns the front door (rune serve); this is the core behind it during the
+transition — the same operator functions the TUI calls in-process, served
+over 127.0.0.1 with NDJSON streaming. The parity battery
+(canary_rune_serve.py) freezes these shapes against the Go front.
+
+Endpoints:
+  GET  /v1/models            {"object": "list", "data": [{id, object, owned_by}]}
+  GET  /v1/status            operator.get_status() pass-through
+  POST /v1/chat/completions  OpenAI envelope + "rune" task metadata;
+                             stream=true → NDJSON chat.completion.chunk lines
+
+Error envelope (every failure path): {"error": {"code", "message"}} with a
+matching HTTP status — the Go front reproduces these byte-for-byte.
+
+Stdlib only (zero-dep split law). The operator is injected, so the canary
+drives a deterministic stub; main() binds the real operator.
+"""
+
+from __future__ import annotations
+
+import json
+import time
+import uuid
+from http.server import BaseHTTPRequestHandler, ThreadingHTTPServer
+from typing import Any, cast
+
+CHAT_PATH = "/v1/chat/completions"
+
+
+def _envelope_error(code: str, message: str) -> dict:
+    return {"error": {"code": code, "message": message}}
+
+
+def models_view(operator: Any) -> dict:
+    return {
+        "object": "list",
+        "data": [
+            {"id": m.get("name", ""), "object": "model", "owned_by": "rune"}
+            for m in operator.list_models()
+        ],
+    }
+
+
+def chat_completion(result: dict, model: str) -> dict:
+    """Map an operator send_task result to the chat.completion envelope.
+    The full operator result rides under "rune" — the front door's parity
+    contract covers it; nothing the core knows is dropped."""
+    return {
+        "id": f"chatcmpl-{uuid.uuid4().hex[:24]}",
+        "object": "chat.completion",
+        "created": int(time.time()),
+        "model": result.get("model") or model,
+        "choices": [{
+            "index": 0,
+            "message": {"role": "assistant",
+                        "content": result.get("user_text", "")},
+            "finish_reason": "stop",
+        }],
+        "rune": result,
+    }
+
+
+def chat_chunks(result: dict, model: str) -> list[dict]:
+    """NDJSON chunk sequence: content chunk(s) then a terminal chunk with
+    finish_reason + the rune metadata block. send_task is a blocking
+    lifecycle today — the framing is the contract being proven; token
+    streaming slots in when the core grows it."""
+    base = {
+        "id": f"chatcmpl-{uuid.uuid4().hex[:24]}",
+        "object": "chat.completion.chunk",
+        "created": int(time.time()),
+        "model": result.get("model") or model,
+    }
+    content = {
+        **base,
+        "choices": [{
+            "index": 0,
+            "delta": {"role": "assistant",
+                      "content": result.get("user_text", "")},
+            "finish_reason": None,
+        }],
+    }
+    terminal = {
+        **base,
+        "choices": [{"index": 0, "delta": {}, "finish_reason": "stop"}],
+        "rune": result,
+    }
+    return [content, terminal]
+
+
+class CoreHandler(BaseHTTPRequestHandler):
+    # BaseRequestHandler.server is typed as the generic base; the only class
+    # this handler ever serves under is CoreServer (make_server). cast() is
+    # the honest narrowing — no ignore comments.
+    @property
+    def core(self) -> "CoreServer":
+        return cast("CoreServer", self.server)
+
+    # BaseHTTPRequestHandler logs every request to stderr by default; the
+    # canary and CI don't need the noise — errors surface as envelopes.
+    def log_message(self, format: str, *args: Any) -> None:  # noqa: A002 — stdlib signature, the name is fixed upstream
+        pass
+
+    # ── helpers ───────────────────────────────────────────────────────────
+
+    def _send_json(self, status: int, body: dict) -> None:
+        raw = json.dumps(body).encode()
+        self.send_response(status)
+        self.send_header("Content-Type", "application/json")
+        self.send_header("Content-Length", str(len(raw)))
+        self.end_headers()
+        self.wfile.write(raw)
+
+    def _send_ndjson(self, status: int, items: list[dict]) -> None:
+        raw = "".join(json.dumps(i) + "\n" for i in items).encode()
+        self.send_response(status)
+        self.send_header("Content-Type", "application/x-ndjson")
+        self.send_header("Content-Length", str(len(raw)))
+        self.end_headers()
+        self.wfile.write(raw)
+
+    # ── routes ────────────────────────────────────────────────────────────
+
+    def do_GET(self) -> None:
+        if self.path == "/v1/models":
+            try:
+                self._send_json(200, models_view(self.core.operator))
+            except Exception as exc:  # noqa: BLE001 — the envelope IS the error contract
+                self._send_json(500, _envelope_error("internal_error", str(exc)[:200]))
+        elif self.path == "/v1/status":
+            try:
+                self._send_json(200, self.core.operator.get_status())
+            except Exception as exc:  # noqa: BLE001 — the envelope IS the error contract
+                self._send_json(500, _envelope_error("internal_error", str(exc)[:200]))
+        elif self.path.startswith("/v1/conversation"):
+            # H4 slice 1: the TUI's conversation window over the wire.
+            try:
+                from urllib.parse import parse_qs, urlparse
+                qs = parse_qs(urlparse(self.path).query)
+                channel = qs.get("channel", ["operator"])[0]
+                n = int(qs.get("n", ["8"])[0])
+                self._send_json(200, {
+                    "messages": self.core.operator.conversation_window(channel, n=n)})
+            except Exception as exc:  # noqa: BLE001 — the envelope IS the error contract
+                self._send_json(500, _envelope_error("internal_error", str(exc)[:200]))
+        else:
+            self._send_json(404, _envelope_error("not_found", f"no route {self.path}"))
+
+    def do_POST(self) -> None:
+        if self.path == "/v1/approvals/resolve":
+            # H4 slice 1: approval resolution over the wire.
+            try:
+                length = int(self.headers.get("Content-Length", "0"))
+                body = json.loads(self.rfile.read(length) or b"{}")
+            except (ValueError, json.JSONDecodeError) as exc:
+                self._send_json(400, _envelope_error("bad_request", f"invalid JSON body: {exc}"))
+                return
+            try:
+                self._send_json(200, self.core.operator.resolve_pending_approval(
+                    bool(body.get("approved"))))
+            except Exception as exc:  # noqa: BLE001 — the envelope IS the error contract
+                self._send_json(500, _envelope_error("internal_error", str(exc)[:200]))
+            return
+        if self.path != CHAT_PATH:
+            self._send_json(404, _envelope_error("not_found", f"no route {self.path}"))
+            return
+        try:
+            length = int(self.headers.get("Content-Length", "0"))
+            body = json.loads(self.rfile.read(length) or b"{}")
+        except (ValueError, json.JSONDecodeError) as exc:
+            self._send_json(400, _envelope_error("bad_request", f"invalid JSON body: {exc}"))
+            return
+        messages = body.get("messages") or []
+        user_texts = [m.get("content", "") for m in messages
+                      if m.get("role") == "user"]
+        if not user_texts:
+            self._send_json(400, _envelope_error(
+                "bad_request", "messages must include a user role entry"))
+            return
+        model = body.get("model") or None
+        try:
+            result = self.core.operator.send_task(user_texts[-1], model)
+        except Exception as exc:  # noqa: BLE001 — the envelope IS the error contract
+            self._send_json(500, _envelope_error("internal_error", str(exc)[:200]))
+            return
+        if body.get("stream"):
+            self._send_ndjson(200, chat_chunks(result, model or ""))
+        else:
+            self._send_json(200, chat_completion(result, model or ""))
+
+
+class CoreServer(ThreadingHTTPServer):
+    daemon_threads = True
+    allow_reuse_address = True
+
+    def __init__(self, host: str, port: int, operator: Any):
+        super().__init__((host, port), CoreHandler)
+        self.operator = operator
+
+
+def make_server(host: str, port: int, operator: Any) -> CoreServer:
+    """Build the server (unstarted) — the canary's entry point."""
+    return CoreServer(host, port, operator)
+
+
+def main(argv: list[str] | None = None) -> int:
+    import argparse
+
+    parser = argparse.ArgumentParser(description="Rune core sidecar (H2)")
+    parser.add_argument("--host", default="127.0.0.1")
+    parser.add_argument("--port", type=int, default=8376)
+    args = parser.parse_args(argv)
+
+    import os
+    import sys
+    sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
+    import rune_operator  # noqa: E402 — late import: heavy module
+
+    server = make_server(args.host, args.port, rune_operator.get_operator())
+    print(f"rune core server on {args.host}:{args.port}", flush=True)
+    try:
+        server.serve_forever()
+    except KeyboardInterrupt:
+        pass
+    return 0
+
+
+if __name__ == "__main__":
+    import sys
+    sys.exit(main())

src/rune/cs_loader.py

@@ -0,0 +1,90 @@
+#!/usr/bin/env python3
+"""ctypes loader for the Rust capability_scoring core (H3 slice 4, T4.4).
+
+Contract BUILDER-2026-10-04T09:43:55Z-cli. Gives capability_fit and
+capability_broker the Rust scoring cores through the cdylib with no
+subprocess.
+
+FFI contract (doc-envelope law — every call returns {"ok", "value"|"err"}):
+  * cs_evaluate_fit({contracts, candidate}) -> fit dict
+  * cs_score_card({card, query}) -> number
+  * cs_free_string(ptr)
+
+FFI segfault law: every symbol gets explicit argtypes + restype (c_void_p
+for returned char*). Zero dependencies; override the .so with CS_RUST_LIB
+(a FILE path).
+"""
+
+from __future__ import annotations
+
+import ctypes
+import json
+import os
+from pathlib import Path
+
+_REPO = Path(__file__).resolve().parents[2]
+_CRATE_DIR = _REPO / "src" / "rust" / "capability_scoring"
+_LIB_PATH = Path(
+    os.environ.get(
+        "CS_RUST_LIB", _CRATE_DIR / "target" / "release" / "libcapability_scoring.so"
+    )
+)
+
+_lib = None
+
+
+class CapabilityScoringUnavailable(FileNotFoundError):
+    """The Rust core is not built (or CS_RUST_LIB points nowhere). Callers
+    fall back to the Python implementation — strangler law."""
+
+
+def available() -> bool:
+    return _LIB_PATH.is_file()
+
+
+def _load() -> ctypes.CDLL:
+    global _lib
+    if _lib is not None:
+        return _lib
+    if not _LIB_PATH.exists():
+        raise CapabilityScoringUnavailable(
+            f"Rust capability_scoring core not built: {_LIB_PATH} missing — run "
+            f"`cargo build --release` in {_CRATE_DIR}"
+        )
+    lib = ctypes.CDLL(str(_LIB_PATH))
+    lib.cs_free_string.argtypes = [ctypes.c_void_p]
+    lib.cs_free_string.restype = None
+    for sym in ("cs_evaluate_fit", "cs_score_card"):
+        fn = getattr(lib, sym)
+        fn.argtypes = [ctypes.c_char_p]
+        fn.restype = ctypes.c_void_p  # char* — never default c_int
+    _lib = lib
+    return lib
+
+
+def _call(sym: str, payload: dict):
+    lib = _load()
+    fn = getattr(lib, sym)
+    raw = json.dumps(payload).encode("utf-8")
+    ptr = fn(raw)
+    if not ptr:
+        raise RuntimeError(f"{sym} returned a null pointer")
+    try:
+        text = ctypes.cast(ptr, ctypes.c_char_p).value.decode("utf-8")
+    finally:
+        lib.cs_free_string(ptr)
+    env = json.loads(text)
+    if not env.get("ok"):
+        raise RuntimeError(f"{sym} core error: {env.get('err')}")
+    return env["value"]
+
+
+def evaluate_fit(contracts: list, candidate: dict) -> dict:
+    """Deterministic EXACT/PARTIAL/INCOMPATIBLE/UNKNOWN fit decision."""
+    return _call("cs_evaluate_fit",
+                 {"contracts": contracts, "candidate": candidate})
+
+
+def score_card(card: dict, query: str) -> float:
+    """Keyword scoring of a capability card against a query."""
+    return _call("cs_score_card", {"card": card, "query": query})

src/rune/drift_cache.py

@@ -40,6 +40,54 @@ CACHE_BOOST_ROCK = 2.0  # multiplier for rock-status entries
 CACHE_BOOST_ESTABLISHED = 1.5  # multiplier for established entries
 
 
+# ── pure decision helpers (H3 slice 2: the Rust core serves these when
+#    built; the _py_ variants are the load-bearing fallback + parity oracle).
+
+from rune.drift_core import _ms_core  # noqa: E402  (no cycle)
+
+
+def _py_compute_priority(entry: dict) -> float:
+    """Compute cache priority: wash_count × importance × status boost."""
+    wash = entry.get("wash_count", 0) or 0
+    imp = entry.get("importance", 0.5) or 0.5
+    status = entry.get("rock_status", "washable")
+
+    # Logarithmic wash scaling (diminishing returns)
+    wash_factor = min(1.0, math.log1p(wash) / math.log1p(20))
+
+    # Status boost
+    status_boost = 1.0
+    if status == "rock":
+        status_boost = CACHE_BOOST_ROCK
+    elif status == "established":
+        status_boost = CACHE_BOOST_ESTABLISHED
+
+    return wash_factor * imp * status_boost
+
+
+def _py_qualifies_for_cache(entry: dict) -> bool:
+    """The add() admission decision: proven through use OR high importance."""
+    wash = entry.get("wash_count", 0) or 0
+    imp = entry.get("importance", 0.5) or 0.5
+    return not (wash < MIN_WASH_FOR_CACHE and imp < 0.8)
+
+
+def compute_priority(entry: dict) -> float:
+    """Module-level priority (Rust core when built)."""
+    core = _ms_core()
+    if core is not None:
+        return core.compute_priority(entry)
+    return _py_compute_priority(entry)
+
+
+def qualifies_for_cache(entry: dict) -> bool:
+    """Module-level qualification (Rust core when built)."""
+    core = _ms_core()
+    if core is not None:
+        return core.qualifies_for_cache(entry)
+    return _py_qualifies_for_cache(entry)
+
+
 class DriftCache:
     """Drift-aware cache with wash-count-based priority."""
 
@@ -65,21 +113,7 @@ class DriftCache:
 
     def _compute_priority(self, entry: dict) -> float:
         """Compute cache priority: wash_count × importance × status boost."""
-        wash = entry.get("wash_count", 0) or 0
-        imp = entry.get("importance", 0.5) or 0.5
-        status = entry.get("rock_status", "washable")
-
-        # Logarithmic wash scaling (diminishing returns)
-        wash_factor = min(1.0, math.log1p(wash) / math.log1p(20))
-
-        # Status boost
-        status_boost = 1.0
-        if status == "rock":
-            status_boost = CACHE_BOOST_ROCK
-        elif status == "established":
-            status_boost = CACHE_BOOST_ESTABLISHED
-
-        return wash_factor * imp * status_boost
+        return compute_priority(entry)
 
     def add(self, entry_id: int, entry: dict):
         """Add an entry to the cache.
@@ -89,8 +123,7 @@ class DriftCache:
         - importance >= 0.8 (high importance, worth caching even if untested)
         """
         wash = entry.get("wash_count", 0) or 0
-        imp = entry.get("importance", 0.5) or 0.5
-        if wash < MIN_WASH_FOR_CACHE and imp < 0.8:
+        if not qualifies_for_cache(entry):
             return  # Not proven enough and not important enough
 
         priority = self._compute_priority(entry)

src/rune/drift_compression.py

@@ -35,7 +35,7 @@ WASH_THRESHOLD_FULL = 20  # above this: minimal compression
 WASH_THRESHOLD_PARTIAL = 10  # above this: reduced compression
 
 
-def get_compression_ratio(wash_count: int = 0, rock_status: str = "washable") -> float:
+def _py_get_compression_ratio(wash_count: int = 0, rock_status: str = "washable") -> float:
     """Get the compression ratio for an entry.
 
     Returns 0.0-1.0 where 0.0 = no compression, 1.0 = maximum compression.
@@ -61,7 +61,7 @@ def get_compression_ratio(wash_count: int = 0, rock_status: str = "washable") ->
         return base
 
 
-def compress_text(text: str, ratio: float) -> str:
+def _py_compress_text(text: str, ratio: float) -> str:
     """Compress text by the given ratio.
 
     Strategy: take first (1-ratio) proportion of the text.
@@ -85,7 +85,7 @@ def compress_text(text: str, ratio: float) -> str:
     return compressed
 
 
-def compress_entry(entry: dict) -> str:
+def _py_compress_entry(entry: dict) -> str:
     """Compress an entry's text based on its wash_count and rock_status.
 
     Returns the compressed text.
@@ -94,11 +94,11 @@ def compress_entry(entry: dict) -> str:
     wash_count = entry.get("wash_count", 0) or 0
     rock_status = entry.get("rock_status", "washable")
 
-    ratio = get_compression_ratio(wash_count, rock_status)
-    return compress_text(text, ratio)
+    ratio = _py_get_compression_ratio(wash_count, rock_status)
+    return _py_compress_text(text, ratio)
 
 
-def should_warn(entry: dict) -> bool:
+def _py_should_warn(entry: dict) -> bool:
     """Check if compressing this entry should trigger a warning.
 
     Warn when:
@@ -119,14 +119,14 @@ def should_warn(entry: dict) -> bool:
         return True
 
     # Long content losing significant detail
-    ratio = get_compression_ratio(wash_count, rock_status)
+    ratio = _py_get_compression_ratio(wash_count, rock_status)
     if len(text) > 200 and ratio > 0.3:
         return True
 
     return False
 
 
-def warn_before_compress(entry: dict) -> dict:
+def _py_warn_before_compress(entry: dict) -> dict:
     """Generate a warning before compressing an entry.
 
     Returns dict with warning details and recommendation.
@@ -134,12 +134,12 @@ def warn_before_compress(entry: dict) -> dict:
     text = entry.get("text", "")
     wash_count = entry.get("wash_count", 0) or 0
     rock_status = entry.get("rock_status", "washable")
-    ratio = get_compression_ratio(wash_count, rock_status)
-    compressed = compress_text(text, ratio)
+    ratio = _py_get_compression_ratio(wash_count, rock_status)
+    compressed = _py_compress_text(text, ratio)
     chars_lost = len(text) - len(compressed)
 
     warning = {
-        "should_warn": should_warn(entry),
+        "should_warn": _py_should_warn(entry),
         "entry_id": entry.get("id"),
         "wash_count": wash_count,
         "rock_status": rock_status,
@@ -161,6 +161,54 @@ def warn_before_compress(entry: dict) -> dict:
     return warning
 
 
+# ── delegating public API (H3 slice 2 strangler) ─────────────────────────────
+# The Rust core serves these when built; the _py_ variants above are the
+# load-bearing fallback AND the parity oracle. DB-backed stats stays below.
+
+from rune.drift_core import _ms_core  # noqa: E402  (no cycle: drift_core
+# imports neither this module nor drift_cache)
+
+
+def get_compression_ratio(wash_count: int = 0, rock_status: str = "washable") -> float:
+    """Get the compression ratio for an entry (Rust core when built)."""
+    core = _ms_core()
+    if core is not None:
+        return core.get_compression_ratio(wash_count, rock_status)
+    return _py_get_compression_ratio(wash_count, rock_status)
+
+
+def compress_text(text: str, ratio: float) -> str:
+    """Compress text by the given ratio (Rust core when built)."""
+    core = _ms_core()
+    if core is not None:
+        return core.compress_text(text, ratio)
+    return _py_compress_text(text, ratio)
+
+
+def compress_entry(entry: dict) -> str:
+    """Compress an entry's text (Rust core when built)."""
+    core = _ms_core()
+    if core is not None:
+        return core.compress_entry(entry)
+    return _py_compress_entry(entry)
+
+
+def should_warn(entry: dict) -> bool:
+    """Check if compressing this entry should trigger a warning."""
+    core = _ms_core()
+    if core is not None:
+        return core.should_warn(entry)
+    return _py_should_warn(entry)
+
+
+def warn_before_compress(entry: dict) -> dict:
+    """Generate a warning before compressing an entry."""
+    core = _ms_core()
+    if core is not None:
+        return core.warn_before_compress(entry)
+    return _py_warn_before_compress(entry)
+
+
 def get_compression_stats(db) -> dict:
     """Get compression statistics for the current store."""
     rows = db.execute(

src/rune/drift_core.py

@@ -64,7 +64,27 @@ WEIGHT_GOAL_RELEVANCE = 0.10  # relevance to current goals
 # ═══════════════════════════════════════════════════════════════════════════════
 
 
-def compute_value(entry: dict, current_goals: List[str] = None) -> float:
+def _ms_core():
+    """The Rust memory_scoring core when available (strangler: Python
+    fallback is load-bearing until deletion is proven).
+    RUNE_MEMORY_CORE=python pins the fallback (parity harnesses)."""
+    if os.environ.get("RUNE_MEMORY_CORE", "auto") == "python":
+        return None
+    try:
+        from rune import ms_loader
+    except Exception:  # noqa: BLE001 — any loader failure means fallback, never a broken call
+        return None
+    try:
+        return ms_loader if ms_loader.available() else None
+    except Exception:  # noqa: BLE001 — availability probe must never crash the fallback
+        return None
+
+
+def _now_iso(now: str | None) -> str:
+    return now or datetime.now(timezone.utc).isoformat()
+
+
+def compute_value(entry: dict, current_goals: List[str] | None = None) -> float:
     """Multi-factor value score. Returns 0.0-1.0+.
 
     How much is this entry worth? Higher = more proven, more useful, more trusted.
@@ -75,7 +95,21 @@ def compute_value(entry: dict, current_goals: List[str] = None) -> float:
     - recency: exponential decay from last access
     - reliability: consistency of access pattern
     - goal_relevance: relevance to current goals (optional)
+
+    H3 slice 1: delegates to the Rust core when built (Python fallback —
+    strangler law). The wall clock is resolved HERE and passed as an
+    argument (no-clock law: both cores take `now` so parity is deterministic).
     """
+    core = _ms_core()
+    if core is not None:
+        return core.compute_value(entry, current_goals, _now_iso(None))
+    return _py_compute_value(entry, current_goals, None)
+
+
+def _py_compute_value(entry: dict, current_goals: List[str] | None = None,
+                      now: str | None = None) -> float:
+    """Python core of compute_value (parity oracle for the Rust core).
+    `now` is an ISO-8601 string; None resolves the wall clock (production)."""
     proven = entry.get("wash_count", 0) or 0  # column name preserved for compatibility
     imp = entry.get("importance", 0.5) or 0.5
 
@@ -83,12 +117,13 @@ def compute_value(entry: dict, current_goals: List[str] = None) -> float:
     proven_factor = min(1.0, math.log1p(proven) / math.log1p(PROVEN_USES_THRESHOLD))
 
     # Recency factor: exponential decay
+    now_dt = datetime.fromisoformat(now) if now else datetime.now(timezone.utc)
     recency = 1.0
     last_accessed = entry.get("last_accessed") or entry.get("last_washed")
     if last_accessed:
         try:
             last = datetime.fromisoformat(last_accessed)
-            hours_since = max(0.1, (datetime.now(timezone.utc) - last).total_seconds() / 3600)
+            hours_since = max(0.1, (now_dt - last).total_seconds() / 3600)
             recency = max(0.1, 1.0 / (1.0 + hours_since / (RECENCY_HALF_LIFE_DAYS * 24)))
         except (ValueError, TypeError):
             recency = 0.5
@@ -134,7 +169,18 @@ def check_promotion_eligibility(entry: dict) -> Tuple[bool, str]:
     - rock_status == 'washable' or 'established'
 
     Returns: (eligible, reason)
+
+    H3 slice 1: delegates to the Rust core when built (Python fallback).
     """
+    core = _ms_core()
+    if core is not None:
+        return core.check_promotion_eligibility(entry, _now_iso(None))
+    return _py_check_promotion_eligibility(entry, None)
+
+
+def _py_check_promotion_eligibility(entry: dict,
+                                    now: str | None = None) -> Tuple[bool, str]:
+    """Python core of check_promotion_eligibility (parity oracle)."""
     wash = entry.get("wash_count", 0) or 0
     status = entry.get("rock_status", "washable")
 
@@ -144,7 +190,7 @@ def check_promotion_eligibility(entry: dict) -> Tuple[bool, str]:
     if wash < PROVEN_USES_THRESHOLD:
         return False, f"proven_uses {wash} < threshold {PROVEN_USES_THRESHOLD}"
 
-    value = compute_value(entry)
+    value = _py_compute_value(entry, now=now)
     if value < 0.6:
         return False, f"value {value:.3f} < 0.6 minimum"
 
@@ -317,7 +363,17 @@ def pre_commit_gate_entry(entry: dict) -> dict:
     """Three critics for a dict entry (no db lookup needed).
 
     Used by curator when promoting candidates that don't have entry_ids yet.
+
+    H3 slice 1: delegates to the Rust core when built (Python fallback).
     """
+    core = _ms_core()
+    if core is not None:
+        return core.pre_commit_gate_entry(entry)
+    return _py_pre_commit_gate_entry(entry)
+
+
+def _py_pre_commit_gate_entry(entry: dict) -> dict:
+    """Python core of pre_commit_gate_entry (parity oracle)."""
     text = entry.get("text", "")
     critics = {}
 

src/rune/evidence_probe.py

@@ -18,15 +18,32 @@ Discipline:
     repeated probe loops (no recursion; one probe per unknown per attempt).
   - The artifact file is the sole authority (ADAPT-9); the declared absolute
     path is injected into the worker prompt, never derived by the worker.
+
+Phase G strangler slice 2 (port 3): the schema gate (validate_probe) and the
+budget count (count_probes) are served IN-PROCESS by the Rust
+`evidence_provenance` cdylib through ep_loader.py — parity 24/24 proven vs
+this module's Python vintage (byte-equal error lists incl. Python repr
+rendering: {status!r} single quotes, sorted-list error shapes, non-string
+status double-error behavior). Orchestration (run_probe, runner subprocess,
+exception semantics, build_probe_prompt) stays Python — same discipline as
+ports 1-2. Constants, ProbeResult, CLI-adjacent surfaces unchanged (git
+history holds the original).
 """
 
 from __future__ import annotations
 
 import json
 import os
+import sys
 import time
 from dataclasses import dataclass, field
 
+# ── Rust core wiring (slice-2 port-3 shim pattern) ──────────────────────────
+_CRATE_DIR = "/mnt/workdrive/rune/src/rust/evidence_provenance"
+if _CRATE_DIR not in sys.path:
+    sys.path.insert(0, _CRATE_DIR)
+import ep_loader  # noqa: E402  (loads target/release cdylib)
+
 PROBE_STATUSES = {"GROUNDED", "STILL_UNKNOWN", "CONTRADICTED"}
 PROBE_FIELDS = ("question", "source", "answer", "implication", "status")
 
@@ -93,38 +110,19 @@ research after the unknown is resolved; guess without a source."""
 
 
 def validate_probe(artifact: dict) -> list[str]:
-    """Schema gate. Returns gate errors (empty = pass)."""
-    errors = []
-    if not isinstance(artifact, dict):
-        return ["probe artifact is not a JSON object"]
-    for f in PROBE_FIELDS:
-        if f not in artifact:
-            errors.append(f"missing required field: {f}")
-        elif not isinstance(artifact[f], str):
-            errors.append(f"field {f} must be a string")
-        elif f != "source" and not artifact[f].strip():
-            errors.append(f"field {f} must be a non-empty string")
-    status = artifact.get("status")
-    if status is not None and status not in PROBE_STATUSES:
-        errors.append(f"status must be one of {sorted(PROBE_STATUSES)}, got {status!r}")
-    # A GROUNDED probe must cite its source (that is what makes it grounded).
-    # STILL_UNKNOWN / CONTRADICTED may have an empty source — no evidence
-    # found is the honest finding, not a schema violation.
-    if status == "GROUNDED" and len(artifact.get("source", "")) < 8:
-        errors.append("GROUNDED probe requires a concrete source citation")
-    extra = set(artifact) - set(PROBE_FIELDS) - {"probe_id", "decided_at", "model"}
-    if extra:
-        errors.append(f"unexpected extra fields: {sorted(extra)}")
-    return errors
+    """Schema gate. Returns gate errors (empty = pass).
+
+    Served by the Rust core (parity-proven byte-equal); dict inputs are
+    serialized for the FFI boundary.
+    """
+    return ep_loader.validate_probe(json.dumps(artifact))
 
 
 def count_probes(artifact_dir: str) -> int:
-    """Probes already run for this task (no-recursion budget)."""
-    path = os.path.join(artifact_dir, "probe.jsonl")
-    if not os.path.exists(path):
-        return 0
-    with open(path) as f:
-        return sum(1 for line in f if line.strip())
+    """Probes already run for this task (no-recursion budget).
+
+    Served by the Rust core (parity-proven byte-equal)."""
+    return ep_loader.count_probes(artifact_dir)
 
 
 def check_budget(artifact_dir: str) -> None:
@@ -211,4 +209,4 @@ def _default_runner(prompt: str, artifact_path: str) -> None:
     with open(os.path.join(os.path.dirname(artifact_path), "evidence_probe.stdout.log"), "w") as f:
         f.write(result.stdout or "")
     if result.returncode != 0:
-        raise ValueError(f"probe worker exited {result.returncode}")
+        raise ValueError(f"probe worker exited {result.returncode}")

src/rune/ffi_query_memory_smoke.py

@@ -0,0 +1,182 @@
+#!/usr/bin/env python3
+"""FFI smoke: prove the deployed consumer shape works against the Rust cdylib.
+
+Deployed ground (memory_store.py:821-822):
+    qm = query_memory.QueryMemory()            # HOME-resolved construction
+    exploration_rate = qm.adaptive_exploration_rate(query)
+
+Checks (each must PASS or the script exits 1):
+  S1  cdylib loads; qm_new() with isolated HOME returns a live instance
+  S2  qm_classify parity vs Python classify_query (battery incl. unicode + tie-break)
+  S3  qm_adaptive_rate exact float parity vs Python adaptive_exploration_rate
+      on a shared store, INCLUDING an adaptive-threshold crossing (>=10 records)
+  S4  qm_record exit 0; persisted entry matches Python's entry shape (timestamp masked)
+  S5  qm_health JSON == json.dumps(py.get_health_report(), indent=2) (timestamps masked)
+  S6  lifecycle: qm_string_free / qm_free / null-safety returns
+
+Isolation: HOME is pinned to a temp dir BEFORE importing query_memory
+(QUERY_MEMORY_DIR is an import-time constant). The Rust side gets the same
+store via qm_with_dir on that exact directory.
+"""
+import ctypes
+import json
+import math
+import os
+import re
+import shutil
+import sys
+import tempfile
+
+REPO = "/mnt/workdrive/rune"
+SO_PATH = os.path.join(REPO, "src/rust/query_memory/target/release/libquery_memory.so")
+PY_DIR = os.path.join(REPO, "src/rune")
+
+TS_RE = re.compile(r"\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(?:\.\d+)?\+00:00")
+
+
+def mask_ts(text):
+    return TS_RE.sub("<TS>", text)
+
+
+def main():
+    tmp = tempfile.mkdtemp(prefix="ffi_smoke_")
+    os.environ["HOME"] = tmp  # BEFORE query_memory import (import-time constant)
+    # Post-supersession (2ac2d0a): the Python vintage is deleted; the
+    # "consumer side" of this smoke is now the shared/ ctypes shim — the same
+    # deployed-consumer surface the smoke was built to prove.
+    sys.path.insert(0, os.path.join(REPO, "shared"))
+    sys.path.insert(0, PY_DIR)
+    import query_memory as qm_py
+
+    results = []
+
+    def check(name, cond, detail=""):
+        results.append((name, bool(cond), detail))
+        print(("PASS" if cond else "FAIL") + "  " + name + (("  | " + detail) if detail and not cond else ""))
+
+    # --- load library ---
+    lib = ctypes.CDLL(SO_PATH)
+    lib.qm_new.restype = ctypes.c_void_p
+    lib.qm_with_dir.argtypes = [ctypes.c_char_p]
+    lib.qm_with_dir.restype = ctypes.c_void_p
+    lib.qm_free.argtypes = [ctypes.c_void_p]
+    lib.qm_classify.argtypes = [ctypes.c_void_p, ctypes.c_char_p]
+    lib.qm_classify.restype = ctypes.c_void_p  # char* via cast
+    lib.qm_adaptive_rate.argtypes = [ctypes.c_void_p, ctypes.c_char_p]
+    lib.qm_adaptive_rate.restype = ctypes.c_double
+    lib.qm_record.argtypes = [ctypes.c_void_p, ctypes.c_char_p, ctypes.c_char_p, ctypes.c_int]
+    lib.qm_record.restype = ctypes.c_int
+    lib.qm_health.argtypes = [ctypes.c_void_p]
+    lib.qm_health.restype = ctypes.c_void_p
+    lib.qm_string_free.argtypes = [ctypes.c_void_p]
+
+    def take(ptr):
+        if not ptr:
+            return None
+        s = ctypes.string_at(ptr).decode("utf-8")
+        lib.qm_string_free(ptr)
+        return s
+
+    # Build store state via PYTHON first (deployed consumer writes through Python;
+    # Rust must read the same store). Cross the C8 adaptive threshold: >=10 records.
+    # BOTH sides are construction-time snapshots of the store (topic_stats is
+    # loaded once in the constructor), so the deployed shape is: seed the store,
+    # THEN construct each consumer fresh from disk. A consumer that wrote through
+    # its own in-memory instance would be an unfair comparison shape.
+    battery = [
+        ("how do I play a chord on guitar", "guitar"),
+        ("python script to debug a function", "coding"),
+        ("recall consolidated memory neurons", "memory"),
+        ("what is my persona voice constitution", "persona"),
+        ("project task deadline milestone", "project"),
+        ("llm agent training inference", "ai"),
+        ("nick ttrpg coffee coconut", "personal"),
+        ("system config troubleshooting error", "system"),
+        ("research paper study survey evidence", "research"),
+        ("write create design art", "creative"),
+        ("mémoire café — 记忆 recall", "memory"),
+        ("build", "coding"),  # tie-break: build in coding AND creative
+        ("make music", "creative"),  # tie-break: music in guitar AND creative
+        ("", None),  # empty query edge
+    ]
+    queries = [q for q, _ in battery]
+
+    # Seed store with 12 records on one topic to cross the adaptive threshold.
+    # The writer is a THROWAWAY instance — both compared consumers must be
+    # constructed fresh AFTER seeding (construction-time snapshot semantics).
+    writer = qm_py.QueryMemory()
+    for i in range(12):
+        writer.record_query("recall consolidated memory neurons", "consolidated", i < 10)
+
+    # S1: the deployed construction shape — HOME-resolved qm_new + fresh Python consumer
+    m = lib.qm_new()
+    check("S1 qm_new returns live instance", bool(m))
+    py = qm_py.QueryMemory()
+
+    # S2+S3: classify + rate parity on the shared store
+    for q in queries:
+        py_topic = py.classify_query(q)
+        rust_topic = take(lib.qm_classify(m, q.encode("utf-8")))
+        check("S2 classify parity: %r" % q[:30], py_topic == rust_topic,
+              "py=%r rust=%r" % (py_topic, rust_topic))
+        py_rate = py.adaptive_exploration_rate(q)
+        rust_rate = lib.qm_adaptive_rate(m, q.encode("utf-8"))
+        check("S3 rate parity: %r" % q[:30], py_rate == rust_rate,
+              "py=%r rust=%r" % (py_rate, rust_rate))
+
+    # S4: record through the FFI, verify persistence matches Python shape
+    rc = lib.qm_record(m, b"recall consolidated memory neurons", b"full_retrieval", 1)
+    check("S4 qm_record returns 0", rc == 0, "rc=%d" % rc)
+    py2 = qm_py.QueryMemory()  # fresh load of the same store
+    last = py2.history[-1]
+    check("S4 persisted entry topic", last["topic"] == "memory", "topic=%r" % last.get("topic"))
+    check("S4 persisted entry strategy", last["strategy"] == "full_retrieval", "strategy=%r" % last.get("strategy"))
+    check("S4 persisted entry success", last["success"] is True)
+    check("S4 persisted entry fields", set(last) == {"query", "topic", "strategy", "success", "timestamp"},
+          "fields=%r" % sorted(last))
+
+    # S5: health report parity (timestamps masked).
+    # BOTH sides must be post-record state: the Rust instance recorded through
+    # itself at S4, so the Python side must be a FRESH load of the same store
+    # (py2), not the pre-record snapshot (py).
+    py_health = json.dumps(py2.get_health_report(), indent=2)
+    rust_health = take(lib.qm_health(m))
+    check("S5 health parity", mask_ts(py_health) == mask_ts(rust_health),
+          "py=%r rust=%r" % (mask_ts(py_health)[:200], mask_ts(rust_health)[:200]))
+
+    # S6: lifecycle + null-safety
+    check("S6 qm_classify(NULL) returns NULL", not lib.qm_classify(m, None))
+    check("S6 qm_adaptive_rate(NULL) returns NaN", math.isnan(lib.qm_adaptive_rate(m, None)))
+    check("S6 qm_record(NULL,...) returns -1",
+          lib.qm_record(None, b"x", b"consolidated", 1) == -1)
+    check("S6 qm_health(NULL) returns NULL", not lib.qm_health(None))
+    lib.qm_string_free(None)  # must not crash
+    lib.qm_free(None)         # must not crash
+
+    # S1b: qm_with_dir on the exact store dir (second deployed-compatible shape)
+    store_dir = os.path.join(tmp, ".config/opencode/memory/query_memory")
+    m2 = lib.qm_with_dir(store_dir.encode("utf-8"))
+    check("S1b qm_with_dir on shared store returns live instance", bool(m2))
+    if m2:
+        r2 = lib.qm_adaptive_rate(m2, b"recall consolidated memory neurons")
+        p2 = py2.adaptive_exploration_rate("recall consolidated memory neurons")
+        check("S1b with_dir instance reads same store state", r2 == p2, "rust=%r py=%r" % (r2, p2))
+        lib.qm_free(m2)
+
+    lib.qm_free(m)
+    _finish(results, tmp)
+
+
+def _finish(results, tmp):
+    shutil.rmtree(tmp, ignore_errors=True)
+    fails = [r for r in results if not r[1]]
+    print("\n%d/%d PASS" % (len(results) - len(fails), len(results)))
+    if fails:
+        for name, _, detail in fails:
+            print("FAILED: %s %s" % (name, detail))
+        sys.exit(1)
+    sys.exit(0)
+
+
+if __name__ == "__main__":
+    main()

src/rune/forge_client.py

@@ -9,11 +9,69 @@ variables or a config dict — nothing is hardcoded to a specific setup.
 from __future__ import annotations
 
 import os
+import time
 from typing import Protocol, runtime_checkable
 
 import httpx
 
 
+def _request(
+    method: str,
+    url: str,
+    *,
+    headers: dict | None = None,
+    json: dict | None = None,
+    timeout: float = 30,
+    retries: int = 2,
+    backoff: float = 0.5,
+    sleep=None,
+):
+    """Resilient single-request path: retry where failure is NOISE, never
+    where failure is the SIGNAL.
+
+    - GET: retries on ``httpx.TransportError`` and 5xx (transient
+      infrastructure failure; idempotent).
+    - POST: retries ONLY on connect-phase errors (``ConnectError`` /
+      ``ConnectTimeout``) — the request never reached the server, so a retry
+      cannot double-create. Read timeouts / write errors / 5xx on a POST are
+      NOT retried: the server may have processed it, and a duplicate issue is
+      worse than a failure the auto-filer can catch.
+    - 4xx: never retried — the client error IS the information. Raised via
+      ``raise_for_status`` on the first attempt.
+    - Attempts: ``retries + 1`` total. Backoff ``backoff * 2**n`` before
+      retry n+1; never a sleep before the first attempt.
+    - ``timeout`` passes through to httpx per call. ``sleep`` is injectable
+      (tests pass a recording fake); default ``time.sleep``.
+    """
+    sleeper = sleep if sleep is not None else time.sleep
+    sender = httpx.post if method.upper() == "POST" else httpx.get
+    connect_phase = (httpx.ConnectError, httpx.ConnectTimeout)
+    for attempt in range(retries + 1):
+        try:
+            r = sender(url, headers=headers, json=json, timeout=timeout)
+        except connect_phase:
+            if attempt < retries:
+                sleeper(backoff * 2**attempt)
+                continue
+            raise
+        except httpx.TransportError:
+            # Non-connect transport error (read/write): only safe to retry
+            # when the call is idempotent.
+            if method.upper() == "GET" and attempt < retries:
+                sleeper(backoff * 2**attempt)
+                continue
+            raise
+        if r.status_code >= 500 and method.upper() == "GET" and attempt < retries:
+            sleeper(backoff * 2**attempt)
+            continue
+        r.raise_for_status()
+        return r
+    # Unreachable: every attempt either returns a successful response or
+    # raises. The explicit raise keeps pyright from inferring an implicit
+    # ``None`` return for the exhausted loop (ratchet: warnings ≤ 454).
+    raise AssertionError("unreachable: _request always returns or raises")
+
+
 @runtime_checkable
 class ForgeClient(Protocol):
     def create_issue(self, title: str, body: str) -> dict: ...
@@ -59,41 +117,41 @@ class GiteaForgejoAdapter:
         return {"Authorization": f"token {self._token}", "Content-Type": "application/json"}
 
     def create_issue(self, title: str, body: str) -> dict:
-        r = httpx.post(
+        r = _request(
+            "POST",
             f"{self._base_url}/issues",
             headers=self._headers(),
             json={"title": title, "body": body},
             timeout=30,
         )
-        r.raise_for_status()
         return r.json()
 
     def add_comment(self, issue_number: int, body: str) -> dict:
-        r = httpx.post(
+        r = _request(
+            "POST",
             f"{self._base_url}/issues/{issue_number}/comments",
             headers=self._headers(),
             json={"body": body},
             timeout=30,
         )
-        r.raise_for_status()
         return r.json()
 
     def get_issue_state(self, issue_number: int) -> dict:
-        r = httpx.get(
+        r = _request(
+            "GET",
             f"{self._base_url}/issues/{issue_number}",
             headers=self._headers(),
             timeout=30,
         )
-        r.raise_for_status()
         return r.json()
 
     def list_open_issues(self) -> list[dict]:
-        r = httpx.get(
+        r = _request(
+            "GET",
             f"{self._base_url}/issues?state=open&limit=50",
             headers=self._headers(),
             timeout=30,
         )
-        r.raise_for_status()
         return r.json()
 
     def search_issues(self, query: str) -> list[dict]:
@@ -115,12 +173,12 @@ class GiteaForgejoAdapter:
         while True:
             from urllib.parse import urlencode
 
-            r = httpx.get(
+            r = _request(
+                "GET",
                 f"{self._base_url}/issues?{urlencode({'state': 'open', 'type': 'issues', 'q': query, 'limit': 50, 'page': page})}",
                 headers=self._headers(),
                 timeout=30,
             )
-            r.raise_for_status()
             batch = r.json()
             results.extend(batch)
             if len(batch) < 50:

src/rune/growth_delta.py

@@ -150,8 +150,35 @@ def _profile_key(delta):
     return {w.strip(".,;:!?()[]{}\"'").lower() for w in (delta.get("change") or "").split() if len(w) > 4}
 
 
+def _cc_core():
+    """Rust cognition_core when available (growth kernels)."""
+    import os
+    if os.environ.get("RUNE_COGNITION_CORE", "auto") == "python":
+        return None
+    try:
+        from rune import cc_loader
+    except Exception:  # noqa: BLE001 — loader probe failure means fallback
+        return None
+    try:
+        return cc_loader if cc_loader.available() else None
+    except Exception:  # noqa: BLE001 — availability probe never crashes
+        return None
+
+
 def _near_dup(a, b):
-    """Are two deltas the same guidance (shared distinctive words)?"""
+    core = _cc_core()
+    if core is not None:
+        return core.growth_near_dup(a, b)
+    return _py_near_dup(a, b)
+
+
+def _py_near_dup(a, b):
+    """Are two deltas the same guidance (shared distinctive words)?
+    Accepts delta dicts OR raw change strings (raw -> wrapped)."""
+    if isinstance(a, str):
+        a = {"change": a}
+    if isinstance(b, str):
+        b = {"change": b}
     ka, kb = _profile_key(a), _profile_key(b)
     if not ka or not kb:
         return False
@@ -177,6 +204,16 @@ def _apply_profile(delta):
 
 
 def growth_profile(max_tokens=PROFILE_BUDGET_TOKENS):
+    core = _cc_core()
+    if core is not None:
+        return core.growth_profile(_load_deltas(),
+                                   sorted(_PROFILE_ORDER.items(),
+                                          key=lambda kv: kv[1]),
+                                   PROFILE_ENTRY_CHARS, max_tokens)
+    return _py_growth_profile(max_tokens)
+
+
+def _py_growth_profile(max_tokens=PROFILE_BUDGET_TOKENS):
     """The active growth profile: the persona's CURRENT behavioural guidance,
     consolidated by target, capped at a fixed token budget. Session-independent
     and token-stable — the per-turn cost never grows with session length."""

src/rune/identity_anchors.py

@@ -254,18 +254,8 @@ def check_genuineness(text):
     return issues
 
 
-def check_drift(text):
-    """Check text against identity anchors for drift signals.
-
-    This is a simple heuristic check — the real drift detection happens
-    via the Nautilus Compass approach (embedding similarity against anchors).
-    This function provides quick pattern-based checks.
-    """
-    text_lower = text.lower()
-    issues = []
-
-    # Check for identity announcements
-    announcement_patterns = [
+def _announcement_patterns():
+    return [
         ("i am rune", "Identity announcement — let the voice carry the identity"),
         ("as rune", "Identity announcement — speak as the persona, not about it"),
         ("my persona", "Identity announcement — the persona is how you act, not what you name"),
@@ -274,32 +264,26 @@ def check_drift(text):
         ("i'm an ai", "Identity announcement — you are a persona, not a generic AI"),
         ("i'm a language model", "Identity announcement — you are Rune, not a language model"),
     ]
-    for pattern, message in announcement_patterns:
-        if pattern in text_lower:
-            issues.append(f"DRIFT: '{pattern}' — {message}")
 
-    # Check for pronoun confusion
-    pronoun_issues = [
+
+def _pronoun_patterns():
+    return [
         ("you are rune", "Pronoun confusion — 'you' is Nick, 'I' is Rune"),
         ("we are rune", "Pronoun confusion — Rune is singular, not plural"),
         ("you should remember", "Pronoun confusion — who should remember?"),
     ]
-    for pattern, message in pronoun_issues:
-        if pattern in text_lower:
-            issues.append(f"DRIFT: '{pattern}' — {message}")
 
-    # Check for hedging without evidence
-    hedge_patterns = [
+
+def _hedge_patterns():
+    return [
         ("i believe", "Hedge without evidence — cite the basis"),
         ("i think that", "Hedge without evidence — cite the basis"),
         ("in my opinion", "Hedge without evidence — cite the basis"),
     ]
-    for pattern, message in hedge_patterns:
-        if pattern in text_lower:
-            issues.append(f"WEAKNESS: '{pattern}' — {message}")
 
-    # Check for sycophancy (excessive agreement, flattery, self-deprecation)
-    sycophancy_patterns = [
+
+def _sycophancy_patterns():
+    return [
         # Excessive agreement
         ("you're absolutely right", "Sycophancy — excessive agreement; push back if you see a better path"),
         ("absolutely, ", "Sycophancy — excessive agreement; state your own position"),
@@ -326,6 +310,60 @@ def check_drift(text):
         ("i see where you're coming from", "Sycophancy — hedging; state your position instead"),
         ("you make a valid point", "Sycophancy — hedging; engage with the substance"),
     ]
+
+
+def _pattern_triples():
+    """The pattern tables as [pattern, message, prefix] triples — the data
+    authority for the Rust drift kernel (kernel matches; data stays here)."""
+    tables = []
+    for prefix, table in (
+        ("DRIFT", _announcement_patterns() + _pronoun_patterns()),
+        ("WEAKNESS", _hedge_patterns()),
+        ("SYCOPHANCY", _sycophancy_patterns()),
+    ):
+        for pat, msg in table:
+            tables.append([pat, msg, prefix])
+    return tables
+
+
+def check_drift(text):
+    """Check text against identity anchors for drift signals.
+
+    This is a simple heuristic check — the real drift detection happens
+    via the Nautilus Compass approach (embedding similarity against anchors).
+    This function provides quick pattern-based checks.
+    """
+    core = _cc_core()
+    if core is not None:
+        return core.drift_check(text, _pattern_triples())
+    return _py_check_drift(text)
+
+
+def _py_check_drift(text):
+    """Python oracle (parity floor)."""
+    text_lower = text.lower()
+    issues = []
+
+    # Check for identity announcements
+    announcement_patterns = _announcement_patterns()
+    for pattern, message in announcement_patterns:
+        if pattern in text_lower:
+            issues.append(f"DRIFT: '{pattern}' — {message}")
+
+    # Check for pronoun confusion
+    pronoun_issues = _pronoun_patterns()
+    for pattern, message in pronoun_issues:
+        if pattern in text_lower:
+            issues.append(f"DRIFT: '{pattern}' — {message}")
+
+    # Check for hedging without evidence
+    hedge_patterns = _hedge_patterns()
+    for pattern, message in hedge_patterns:
+        if pattern in text_lower:
+            issues.append(f"WEAKNESS: '{pattern}' — {message}")
+
+    # Check for sycophancy (excessive agreement, flattery, self-deprecation)
+    sycophancy_patterns = _sycophancy_patterns()
     for pattern, message in sycophancy_patterns:
         if pattern in text_lower:
             issues.append(f"SYCOPHANCY: '{pattern}' — {message}")
@@ -424,13 +462,38 @@ if __name__ == "__main__":
 # ---------------------------------------------------------------------------
 # Hook handler — called by the microkernel when an event fires.
 # ---------------------------------------------------------------------------
+def _cc_core():
+    """Rust cognition_core when available (identity kernels)."""
+    import os
+    if os.environ.get("RUNE_COGNITION_CORE", "auto") == "python":
+        return None
+    try:
+        from rune import cc_loader
+    except Exception:  # noqa: BLE001 — loader probe failure means fallback
+        return None
+    try:
+        return cc_loader if cc_loader.available() else None
+    except Exception:  # noqa: BLE001 — availability probe never crashes
+        return None
+
+
 def get_identity_prompt() -> str:
     """Get identity prompt for injection into model calls.
+    R2 W3.3: assembly delegates to the Rust kernel (data stays here).
 
     Builds a comprehensive prompt from all identity data:
     self-awareness, anchors, embodiment rules, and pronoun rules.
     Pronouns come first — they're the most important rule.
     """
+    core = _cc_core()
+    if core is not None:
+        return core.identity_prompt(PRONOUN_RULES, SELF_AWARENESS, ANCHORS,
+                                    EMBODIMENT_RULES)
+    return _py_get_identity_prompt()
+
+
+def _py_get_identity_prompt() -> str:
+    """Python oracle (parity floor)."""
     parts = []
 
     # Pronoun rules — critical for disambiguation

src/rune/memory_store.py

@@ -734,39 +734,14 @@ def recall(
     # lexical (embeddings absent): RRF degenerates to a rank transform that
     # destroys the score signal needed for thresholding (Bruch et al.,
     # arXiv:2210.11934) — use raw BM25 scores directly.
-    ranks = {}
-    best_dense = 0.0
-    # M1 observability (#161 synthesis INV-13): which fusion branch produced
-    # the results. Observability ONLY — consumers must never branch behavior
-    # on this field (that would create a second retrieval authority).
-    retrieval_mode = "lexical-only"
-    if dense and bm25:
-        retrieval_mode = "hybrid"
-        for idx, lst in enumerate([dense, bm25]):
-            for pos, (eid, _score) in enumerate(lst):
-                ranks[eid] = ranks.get(eid, 0.0) + 1.0 / (RRF_K + pos + 1)
-                if idx == 0:
-                    best_dense = max(best_dense, _score)
-    elif dense:
-        retrieval_mode = "dense-only"
-        for pos, (eid, _score) in enumerate(dense):
-            ranks[eid] = 1.0 / (RRF_K + pos + 1)
-            best_dense = max(best_dense, _score)
-    elif bm25:
-        # Lexical-only: normalize raw BM25 scores (negative, higher = better)
-        # into a positive scale so the sort + gap abstention below work
-        # uniformly with the RRF scale. BM25 returns negative scores; the
-        # least-negative (closest to 0) is the best match. Offset + invert:
-        #   best (=-8) -> 2, worst (=-10) -> 0. Rank order preserved.
-        _min_bm = min((s for _, s in bm25), default=0.0)
-        _max_bm = max((s for _, s in bm25), default=0.0)
-        _span = max(_max_bm - _min_bm, 1e-9)
-        for eid, score in bm25:
-            ranks[eid] = (score - _min_bm) / _span
+    fusion = _rank_fusion(dense, bm25)
+    ranks = dict(fusion["ranks"])
+    best_dense = fusion["best_dense"]
+    retrieval_mode = fusion["mode"]
     # Fetch full entries + metadata for the fused set. P1-03 (#26): typed
     # queries filter here — matching types + unclassified (NULL) rows stay
     # eligible; other types drop out before scoring.
-    scored = []
+    rows_data = []
     if ranks:
         ids = list(ranks.keys())
         placeholders = ",".join("?" * len(ids))
@@ -776,124 +751,87 @@ def recall(
             type_ph = ",".join("?" * len(memory_types))
             sql += f" AND (memory_type IN ({type_ph}) OR memory_type IS NULL)"
             params.extend(memory_types)
-        rows = db.execute(sql, params).fetchall()
-        by_id = {r["id"]: r for r in rows}
-        for eid, base in sorted(ranks.items(), key=lambda x: -x[1]):
-            row = by_id.get(eid)
-            if not row:
-                continue
-            # #1 temperature ranking (not deletion): a stale fact ranks lower
-            # but stays in the store. #4 confidence: a hedged/claimed fact
-            # carries its honesty into ranking. Blend into a relevance score.
-            # RECENCY: a fact last accessed recently ranks slightly higher than
-            # an untouched one at equal relevance (the store's last_accessed
-            # field). Decays over RECENCY_HALF_LIFE days — a gentle nudge, not
-            # a rewrite of the relevance ranking.
-            conf = float(row["confidence"] or 0.7)
-            temp = float(row["temperature"] or 1.0)
-            recency = 1.0
-            try:
-                from datetime import datetime, timezone
+        rows_data = [dict(r) for r in db.execute(sql, params).fetchall()]
+    return _score_recall_rows(
+        fusion, rows_data, dense, bm25, budget, min_score, now_iso())
 
-                la = row["last_accessed"]
-                if la:
-                    t_last = datetime.fromisoformat(la.replace("Z", "+00:00"))
-                    days = (datetime.now(timezone.utc) - t_last).total_seconds() / 86400.0
-                    if days >= 0:
-                        recency = RECENCY_HALF_LIFE / (RECENCY_HALF_LIFE + days)
-            except Exception:
-                logger.debug("recall failed", exc_info=True)
-            # In lexical-only mode `base` is a raw BM25 score (negative).
-            # Normalize it to a positive relevance for the metadata, keeping
-            # the ranking identical. In hybrid mode `base` is an RRF rank.
-            if dense and bm25:
-                relevance = base * (0.4 + 0.6 * conf) * (0.5 + 0.5 * temp) * (0.85 + 0.15 * recency)
-            elif dense:
-                relevance = base * (0.4 + 0.6 * conf) * (0.5 + 0.5 * temp) * (0.85 + 0.15 * recency)
-            else:
-                relevance = (base + 5.0) * (0.4 + 0.6 * conf) * (0.5 + 0.5 * temp) * (0.85 + 0.15 * recency)
-            scored.append(
-                {
-                    "id": eid,
-                    "text": row["text"],
-                    "importance": row["importance"],
-                    "topic": row["topic"],
-                    "entities": row["entities"],
-                    "source": row["source"],
-                    "last_accessed": row["last_accessed"],
-                    "rrf": round(base, 4),
-                    "confidence": round(conf, 2),
-                    "temperature": round(temp, 2),
-                    "relevance": round(relevance, 4),
-                    # M1 observability (#161): lexical-only | dense-only | hybrid.
-                    # NEVER consumed for behavior — see INV-13 in the synthesis.
-                    "mode": retrieval_mode,
-                }
-            )
-    # Enforce budget + abstention floor.
+
+def _score_recall_rows(fusion, rows, dense, bm25, budget, min_score, now):
+    """Pure metadata scoring + mode-specific abstention kernel (W2.1)."""
+    core = _mr_core()
+    if core is not None:
+        return core.score_recall_rows(
+            fusion, rows, dense, bm25, budget, min_score, now,
+            RECENCY_HALF_LIFE)
+    return _py_score_recall_rows(
+        fusion, rows, dense, bm25, budget, min_score, now,
+        RECENCY_HALF_LIFE)
+
+
+def _py_score_recall_rows(fusion, rows, dense, bm25, budget, min_score,
+                          now, recency_half_life=RECENCY_HALF_LIFE):
+    """Python oracle for the Rust scoring/abstention kernel."""
+    from datetime import datetime
+
+    ranks = dict(fusion["ranks"])
+    best_dense = fusion["best_dense"]
+    retrieval_mode = fusion["mode"]
+    by_id = {row["id"]: row for row in rows}
+    scored = []
+    now_dt = datetime.fromisoformat(now)
+    for eid, base in sorted(ranks.items(), key=lambda item: -item[1]):
+        row = by_id.get(eid)
+        if not row:
+            continue
+        conf = float(row.get("confidence") or 0.7)
+        temp = float(row.get("temperature") or 1.0)
+        recency = 1.0
+        try:
+            la = row.get("last_accessed")
+            if la:
+                t_last = datetime.fromisoformat(la.replace("Z", "+00:00"))
+                days = (now_dt - t_last).total_seconds() / 86400.0
+                if days >= 0:
+                    recency = recency_half_life / (recency_half_life + days)
+        except Exception:
+            logger.debug("recall score kernel timestamp failed", exc_info=True)
+        if dense:
+            relevance = base * (0.4 + 0.6 * conf) * (0.5 + 0.5 * temp) * (0.85 + 0.15 * recency)
+        else:
+            relevance = (base + 5.0) * (0.4 + 0.6 * conf) * (0.5 + 0.5 * temp) * (0.85 + 0.15 * recency)
+        scored.append({
+            "id": eid, "text": row.get("text"),
+            "importance": row.get("importance"),
+            "topic": row.get("topic"), "entities": row.get("entities"),
+            "source": row.get("source"),
+            "last_accessed": row.get("last_accessed"),
+            "rrf": round(base, 4), "confidence": round(conf, 2),
+            "temperature": round(temp, 2),
+            "relevance": round(relevance, 4), "mode": retrieval_mode,
+        })
     if not scored:
         return []
     top = scored[:budget]
-    # ABSTENTION via query-difficulty estimation (QPP — Cronen-Townsend et al.,
-    # SIGIR 2002; Zhou & Croft, CIKM 2006; LongMemEval arXiv:2410.10813 makes
-    # abstention a first-class memory ability). The principled signal is the
-    # RANKING GAP, not an absolute score:
-    #  - lexical-only: the conjunction already filters to co-occurring terms;
-    #    a single weak hit (no runner-up) abstains (no confident winner).
-    #  - dense-only: abstain when the top-1 dense match is not clearly above
-    #    the runner-up (an ambiguous, no-confident-winner query) OR the top is
-    #    below an absolute "probably unrelated" floor. The floor is a coarse
-    #    guard; the gap is the real difficulty signal.
     if not dense and not bm25:
         return []
-    if not dense:  # lexical-only
-        if len(scored) < 1:
+    if not dense:
+        if max(float(item["relevance"]) for item in top) < min_score:
             return []
-        # P1-03 (#26) DISCHARGE (finding 1): THE floor applies in EVERY
-        # mode. The conjunctive FTS gate is a precision filter — term
-        # co-occurrence, not relevance — so the best match must ALSO clear
-        # min_score before anything is injected. Lexical relevance lives on
-        # its own offset band (~4.1-4.9 with default metadata), so the
-        # default 0.42 floor rarely binds here; the check enforces the floor
-        # contract for ANY min_score (an elevated floor above the band
-        # forces abstention — machine-checked in the frozen tests).
-        if max(float(s["relevance"]) for s in top) < min_score:
-            return []  # below floor -> abstain
-        if len(scored) == 1:
-            return top  # single conjunctive match = confident enough
-        # Multiple conjunctive BM25 matches: the FTS5 implicit-AND already
-        # guarantees ALL query terms co-occur in every result (the precision
-        # filter), so these are genuine matches — not a fuzzy near-tie. The
-        # normalized top is the best; a weak runner-up is still a real match.
         return top
-    # dense present. Score-based abstention (QPP, Shtok et al. TOIS 2012).
-    # The absolute floor is CALIBRATED against real cases (nomic band ~0.6-0.75):
-    #   "what does the user drink" vs "black coffee" = 0.766 -> relevant
-    #   "quantum physics of black holes" vs "coconut milk" = 0.712 -> noise
-    # The separation sits at ~0.74. Below it, only a clear winner (large gap to
-    # the runner-up) may pass; a weak top with no clear winner abstains.
     if not bm25:
         if best_dense < min_score:
-            return []  # below the "probably unrelated" floor
+            return []
         if best_dense >= 0.74:
-            return _position_aware(top)  # calibrated: genuine semantic match
+            return _py_position_aware(top)
         if len(dense) >= 2:
-            d_scores = sorted(s for _, s in dense)
-            top1 = d_scores[-1]
-            top2 = d_scores[-2]
-            if top1 - top2 >= 0.08:
-                return _position_aware(top)  # clear winner despite mid-band score
-            return []  # weak + ambiguous -> abstain
-        return _position_aware(_map_reduce(top))  # single mid-band dense hit
-    # P1-03 (#26) DISCHARGE (finding 1): the hybrid path (dense AND lexical
-    # both fired) gates on the dense cosine — the calibrated scale min_score
-    # was tuned against — exactly like the dense-only branch above. The
-    # numeric check is ADDITIVE to the conjunctive FTS gate (which stays
-    # as-is); the RRF-fused relevance is rank-based and is NOT compared
-    # against the floor here.
+            d_scores = sorted(score for _, score in dense)
+            if d_scores[-1] - d_scores[-2] >= 0.08:
+                return _py_position_aware(top)
+            return []
+        return _py_position_aware(_py_map_reduce(top))
     if best_dense < min_score:
         return []
-    return _position_aware(_map_reduce(top))
+    return _py_position_aware(_py_map_reduce(top))
 
 
 def _drift_rerank(db, entries):
@@ -944,7 +882,27 @@ def _drift_rerank(db, entries):
     return [entry for _, entry in scored]
 
 
+def _mr_core():
+    """Rust memory_retrieval core when built; Python fallback remains
+    load-bearing during the strangler. RUNE_RETRIEVAL_CORE=python pins it."""
+    if os.environ.get("RUNE_RETRIEVAL_CORE", "auto") == "python":
+        return None
+    try:
+        from rune import mr_loader
+
+        return mr_loader if mr_loader.available() else None
+    except Exception:  # noqa: BLE001 — loader probe failure means Python fallback
+        return None
+
+
 def _map_reduce(entries: list, chunk_size: int = 10) -> list:
+    core = _mr_core()
+    if core is not None:
+        return core.map_reduce(entries, chunk_size)
+    return _py_map_reduce(entries, chunk_size)
+
+
+def _py_map_reduce(entries: list, chunk_size: int = 10) -> list:
     """Map-reduce for large result sets.
 
     When retrieval returns many entries, chunk them and take the top-N
@@ -1173,6 +1131,13 @@ def cached_recall(db, query, budget=RECALL_BUDGET, min_score=RECALL_MIN_SCORE, m
 
 
 def _position_aware(top):
+    core = _mr_core()
+    if core is not None:
+        return core.position_aware(top)
+    return _py_position_aware(top)
+
+
+def _py_position_aware(top):
     """POSITION-AWARE RE-RANK (research uplift #2): lost-in-the-middle
     mitigation (Liu et al. 2023; BriefContext, npj Digital Medicine 2025).
     Models use the START and END of context best and the middle worst, so the
@@ -1247,6 +1212,13 @@ _STOPWORDS = {
 
 
 def _fts_query_conjunctive(query):
+    core = _mr_core()
+    if core is not None:
+        return core.fts_query_conjunctive(query)
+    return _py_fts_query_conjunctive(query)
+
+
+def _py_fts_query_conjunctive(query):
     """Build a CONJUNCTIVE FTS5 MATCH query (implicit AND).
 
     Extended Boolean IR (Salton, Fox & Wu, CACM 1983): a document must contain
@@ -1269,6 +1241,85 @@ def _fts_query(query):
     return _fts_query_conjunctive(query)
 
 
+def mr_rank_fusion(dense, bm25, cap):
+    """Chunk-side RRF fusion with an explicit candidate cap (W2.1)."""
+    core = _mr_core()
+    if core is not None:
+        return core.rank_fusion(dense[:cap], bm25[:cap], RRF_K)
+    return _py_rank_fusion(dense[:cap], bm25[:cap], RRF_K)
+
+
+def _project_chunk_rows(ranks, rows, budget):
+    """Chunk projection: sorted by RRF desc, text[:400], budget-capped.
+    `ranks` is the W2.1 pair-list ([[rowid, rrf], ...]) from the fusion
+    contract; the Rust side consumes pairs directly."""
+    core = _mr_core()
+    if core is not None:
+        pairs = (ranks if isinstance(ranks, list)
+                 else [list(r) for r in ranks.items()])
+        return core.project_chunk_rows(pairs, rows, budget)
+    return _py_project_chunk_rows(ranks, rows, budget)
+
+
+def _py_project_chunk_rows(ranks, rows, budget):
+    by_id = {r["rowid"]: r for r in rows}
+    out = []
+    for eid, rrf in sorted(ranks.items(), key=lambda x: -x[1]):
+        r = by_id.get(eid)
+        if not r:
+            continue
+        out.append({
+            "chunk_id": r["chunk_id"],
+            "text": (r["text"] or "")[:400],
+            "wing": r["wing"],
+            "room": r["room"],
+            "source": r["source_path"],
+            "page": r["page"] if "page" in r.keys() else None,
+            "rrf": round(rrf, 4),
+        })
+        if len(out) >= budget:
+            break
+    return out
+
+
+def _rank_fusion(dense, bm25):
+    """Pure dense/BM25 fusion and mode selection (R2 W2.1).
+
+    Returns ranks as ordered [id, score] pairs so integer ids survive the
+    JSON membrane without object-key coercion.
+    """
+    core = _mr_core()
+    if core is not None:
+        return core.rank_fusion(dense, bm25, RRF_K)
+    return _py_rank_fusion(dense, bm25, RRF_K)
+
+
+def _py_rank_fusion(dense, bm25, rrf_k=RRF_K):
+    ranks = {}
+    best_dense = 0.0
+    mode = "lexical-only"
+    if dense and bm25:
+        mode = "hybrid"
+        for idx, values in enumerate([dense, bm25]):
+            for pos, (eid, score) in enumerate(values):
+                ranks[eid] = ranks.get(eid, 0.0) + 1.0 / (rrf_k + pos + 1)
+                if idx == 0:
+                    best_dense = max(best_dense, score)
+    elif dense:
+        mode = "dense-only"
+        for pos, (eid, score) in enumerate(dense):
+            ranks[eid] = 1.0 / (rrf_k + pos + 1)
+            best_dense = max(best_dense, score)
+    elif bm25:
+        min_bm = min((score for _, score in bm25), default=0.0)
+        max_bm = max((score for _, score in bm25), default=0.0)
+        span = max(max_bm - min_bm, 1e-9)
+        for eid, score in bm25:
+            ranks[eid] = (score - min_bm) / span
+    return {"ranks": [[eid, score] for eid, score in ranks.items()],
+            "best_dense": best_dense, "mode": mode}
+
+
 def update_entry(db, eid, text=None, importance=None, valid_until=None):
     sets, params = [], []
     if text is not None:
@@ -1456,6 +1507,13 @@ def working_clear(db, task_id):
 
 
 def _chunk_text(text, size=1500, overlap=150):
+    core = _mr_core()
+    if core is not None:
+        return core.chunk_text(text, size, overlap)
+    return _py_chunk_text(text, size, overlap)
+
+
+def _py_chunk_text(text, size=1500, overlap=150):
     """Recursive-ish split on paragraph/heading boundaries, ~1500 chars (the
     local CPU-friendly size; research: fixed chunking beats semantic for
     free systems). Headings stay with their content."""
@@ -1577,43 +1635,22 @@ def chunk_recall(db, query, budget=6, wing=None, min_sim=0.0, doc=None):
         bm25 = [(r["rowid"], 0.5) for r in rows]
     except Exception:
         logger.debug("chunk_recall failed", exc_info=True)
-    ranks = {}
-    for lst in [dense, bm25]:
-        for pos, (eid, _s) in enumerate(lst):
-            ranks[eid] = ranks.get(eid, 0.0) + 1.0 / (RRF_K + pos + 1)
-    if not ranks:
-        return []
-    ids = list(ranks.keys())
-    ph = ",".join("?" * len(ids))
-    sql = f"SELECT rowid, * FROM chunks WHERE rowid IN ({ph})"
-    params = ids
-    if wing:
-        sql += " AND wing=?"
-        params.append(wing)
-    if doc:
-        sql += " AND doc_id=?"
-        params.append(doc)
-    rows = db.execute(sql, params).fetchall()
-    by_id = {r["rowid"]: r for r in rows}
-    out = []
-    for eid, rrf in sorted(ranks.items(), key=lambda x: -x[1]):
-        r = by_id.get(eid)
-        if not r:
-            continue
-        out.append(
-            {
-                "chunk_id": r["chunk_id"],
-                "text": r["text"][:400],
-                "wing": r["wing"],
-                "room": r["room"],
-                "source": r["source_path"],
-                "page": r["page"] if "page" in r.keys() else None,
-                "rrf": round(rrf, 4),
-            }
-        )
-        if len(out) >= budget:
-            break
-    return out
+    fusion = mr_rank_fusion(dense, bm25, budget * 3)
+    ranks_list = fusion["ranks"]  # ordered [rowid, rrf] pairs (W2.1 contract)
+    ids = [int(v[0]) for v in ranks_list]
+    rows = []
+    if ids:
+        ph = ",".join("?" * len(ids))
+        sql = f"SELECT rowid, * FROM chunks WHERE rowid IN ({ph})"
+        params = ids
+        if wing:
+            sql += " AND wing=?"
+            params.append(wing)
+        if doc:
+            sql += " AND doc_id=?"
+            params.append(doc)
+        rows = [dict(r) for r in db.execute(sql, params).fetchall()]
+    return _project_chunk_rows(fusion["ranks"], rows, budget)
 
 
 # ------------------------------------------------------------------- mining ----
@@ -1907,6 +1944,71 @@ def stats(db):
     return {"active_entries": e, "working": w, "audit": a, "top_topics": by_topic}
 
 
+# ── storage backend seam (R2 W2.0) ───────────────────────────────────────────
+# SQLite is RETAINED (Nick's ruling) — the seam separates query logic from
+# storage mechanics so the Rust core can serve proven-identical READS via
+# system libsqlite3 FFI. Connection-based callers (stats above) keep their
+# transactional semantics untouched; path-based consumers opt into the
+# backend. NO WRITES route through the Rust backend this slice.
+
+
+class _SQLiteBackend:
+    """The default backend: the stdlib sqlite3 mechanics, unchanged."""
+
+    name = "sqlite"
+
+    def read_query(self, db_path: str, sql: str, params=()) -> list:
+        conn = sqlite3.connect(db_path)
+        try:
+            return [tuple(r) for r in conn.execute(sql, params).fetchall()]
+        finally:
+            conn.close()
+
+
+class _RustReadBackend:
+    """The Rust read path through the memory_storage crate (read-only by
+    construction — the crate exports no write-capable symbols)."""
+
+    name = "rust-memory-storage"
+
+    def read_query(self, db_path: str, sql: str, params=()) -> list:
+        from rune import mems_loader
+
+        return [tuple(r) for r in mems_loader.read_query(db_path, sql, list(params))]
+
+
+def storage_backend():
+    """The active read backend. Default sqlite; RUNE_MEMORY_STORAGE=rust
+    opts into the crate when built (falls back loudly-free to sqlite)."""
+    if os.environ.get("RUNE_MEMORY_STORAGE", "auto") == "rust":
+        try:
+            from rune import mems_loader
+
+            if mems_loader.available():
+                return _RustReadBackend()
+        except Exception:  # noqa: BLE001, S110 — backend probe failure means the default serves (fallback, not silence)
+            pass
+    return _SQLiteBackend()
+
+
+def stats_for_path(db_path: str) -> dict:
+    """stats() through the storage backend seam — the opt-in consumer the
+    parity battery and future Rust callers use. Same result dict shape."""
+    backend = storage_backend()
+    e = backend.read_query(db_path, "SELECT COUNT(*) FROM entries WHERE status='active'")[0][0]
+    w = backend.read_query(db_path, "SELECT COUNT(*) FROM working")[0][0]
+    a = backend.read_query(db_path, "SELECT COUNT(*) FROM audit_log")[0][0]
+    by_topic = {
+        r[0]: r[1]
+        for r in backend.read_query(
+            db_path,
+            "SELECT topic, COUNT(*) AS n FROM entries WHERE status='active' GROUP BY topic ORDER BY n DESC LIMIT 6",
+        )
+        if r[0]
+    }
+    return {"active_entries": e, "working": w, "audit": a, "top_topics": by_topic}
+
+
 # ------------------------------------------------------------------ associations ----
 
 
@@ -1978,8 +2080,24 @@ def recall_with_associations(db, query, budget=RECALL_BUDGET, min_score=RECALL_M
     ids = list(boost_map.keys())
     placeholders = ",".join("?" * len(ids))
     rows = db.execute(f"SELECT * FROM entries WHERE id IN ({placeholders}) AND status='active'", ids).fetchall()
+    boost_items = [{"id": eid, "strength": strength}
+                   for eid, strength in sorted(boost_map.items(), key=lambda x: -x[1])]
+    return _merge_association_rows(base, boost_items, [dict(r) for r in rows], budget)
+
+
+def _merge_association_rows(base, boost_items, rows, budget):
+    """Pure association projection/boost/order/budget kernel (R2 W2.1)."""
+    core = _mr_core()
+    if core is not None:
+        return core.merge_association_rows(base, boost_items, rows, budget)
+    return _py_merge_association_rows(base, boost_items, rows, budget)
+
+
+def _py_merge_association_rows(base, boost_items, rows, budget):
+    base = list(base)
     by_id2 = {r["id"]: r for r in rows}
-    for eid, strength in sorted(boost_map.items(), key=lambda x: -x[1]):
+    for item in boost_items:
+        eid, strength = item["id"], item["strength"]
         row = by_id2.get(eid)
         if not row:
             continue
@@ -2022,6 +2140,19 @@ def fused_recall(db, query, budget=RECALL_BUDGET, min_score=RECALL_MIN_SCORE, ch
     """
     entries = recall_with_associations(db, query, budget=budget, min_score=min_score)
     research = chunk_recall(db, query, budget=chunk_budget, wing=wings, doc=None)
+    return _fuse_results(entries, research)
+
+
+def _fuse_results(entries, research):
+    """Pure fact/research projection, de-duplication and per-kind scale
+    alignment (R2 W2.1). Rust core when built; Python core is the oracle."""
+    core = _mr_core()
+    if core is not None:
+        return core.fuse_results(entries, research)
+    return _py_fuse_results(entries, research)
+
+
+def _py_fuse_results(entries, research):
     seen = set()
     merged = []
     for e in entries:
@@ -2075,6 +2206,13 @@ def fused_recall(db, query, budget=RECALL_BUDGET, min_score=RECALL_MIN_SCORE, ch
 
 
 def _norm_key(text):
+    core = _mr_core()
+    if core is not None:
+        return core.norm_key(text)
+    return _py_norm_key(text)
+
+
+def _py_norm_key(text):
     """Normalize text for cross-table de-duplication (entries vs chunks of the
     same absorbed material may differ in whitespace/case)."""
     return " ".join((text or "").lower().split())

src/rune/mems_loader.py

@@ -0,0 +1,83 @@
+#!/usr/bin/env python3
+"""ctypes loader for the Rust memory_storage core (R2 W2.0).
+
+Contract BUILDER-2026-10-04T15:54:17Z-cli. READ-ONLY by construction:
+the only operation is read_query — the crate exports no write-capable
+symbols (Nick's ruling: reads proven byte-identical before any writes
+exist). SQLite is retained; the crate reaches it via system libsqlite3.
+
+FFI contract (doc-envelope law): mems_read_query({db_path, sql, params})
+-> [[cell, ...], ...]; mems_free_string(ptr). FFI segfault law: argtypes +
+restype pinned per symbol. Override the .so with MEMS_RUST_LIB (FILE path).
+"""
+
+from __future__ import annotations
+
+import ctypes
+import json
+import os
+from pathlib import Path
+
+_REPO = Path(__file__).resolve().parents[2]
+_CRATE_DIR = _REPO / "src" / "rust" / "memory_storage"
+_LIB_PATH = Path(
+    os.environ.get(
+        "MEMS_RUST_LIB", _CRATE_DIR / "target" / "release" / "libmemory_storage.so"
+    )
+)
+
+_lib = None
+
+
+class MemoryStorageUnavailable(FileNotFoundError):
+    """The Rust core is not built (or MEMS_RUST_LIB points nowhere)."""
+
+
+def available() -> bool:
+    return _LIB_PATH.is_file()
+
+
+def _load() -> ctypes.CDLL:
+    global _lib
+    if _lib is not None:
+        return _lib
+    if not _LIB_PATH.exists():
+        raise MemoryStorageUnavailable(
+            f"Rust memory_storage core not built: {_LIB_PATH} missing — run "
+            f"`cargo build --release` in {_CRATE_DIR}"
+        )
+    lib = ctypes.CDLL(str(_LIB_PATH))
+    lib.mems_free_string.argtypes = [ctypes.c_void_p]
+    lib.mems_free_string.restype = None
+    lib.mems_read_query.argtypes = [ctypes.c_char_p]
+    lib.mems_read_query.restype = ctypes.c_void_p  # char* — never c_int
+    _lib = lib
+    return lib
+
+
+def _call(payload: dict) -> dict:
+    """Raw envelope: {"ok", "value"|"err"} — the error-honesty section of
+    the canary needs the envelope, not an exception."""
+    lib = _load()
+    raw = json.dumps(payload).encode("utf-8")
+    ptr = lib.mems_read_query(raw)
+    if not ptr:
+        raise RuntimeError("mems_read_query returned a null pointer")
+    try:
+        text = ctypes.cast(ptr, ctypes.c_char_p).value.decode("utf-8")
+    finally:
+        lib.mems_free_string(ptr)
+    return json.loads(text)
+
+
+def read_query(db_path: str, sql: str, params: list) -> list:
+    """Read-only query through the Rust core; raises on the error envelope."""
+    env = _call({"db_path": db_path, "sql": sql, "params": params})
+    if not env.get("ok"):
+        raise RuntimeError(f"mems_read_query core error: {env.get('err')}")
+    return env["value"]
+
+
+def read_query_result(db_path: str, sql: str, params: list) -> dict:
+    """The raw envelope (error-honesty checks consume this)."""
+    return _call({"db_path": db_path, "sql": sql, "params": params})

src/rune/mr_loader.py

@@ -0,0 +1,38 @@
+"""ctypes loader for the zero-dependency memory_retrieval core (R2 W2.1)."""
+from __future__ import annotations
+import ctypes, json, os
+from pathlib import Path
+_ROOT=Path(__file__).resolve().parents[2]
+_CRATE=_ROOT/"src/rust/memory_retrieval"
+_LIB=Path(os.environ.get("MR_RUST_LIB",_CRATE/"target/release/libmemory_retrieval.so"))
+_lib=None
+def available(): return _LIB.is_file()
+def _load():
+ global _lib
+ if _lib is not None:return _lib
+ if not _LIB.exists():raise FileNotFoundError(f"memory_retrieval core not built: {_LIB}")
+ lib=ctypes.CDLL(str(_LIB));lib.mr_call.argtypes=[ctypes.c_char_p];lib.mr_call.restype=ctypes.c_void_p
+ lib.mr_free_string.argtypes=[ctypes.c_void_p];lib.mr_free_string.restype=None;_lib=lib;return lib
+def _call(op,arg):
+ # Send UTF-8 directly. ensure_ascii=True emits surrogate-pair escapes; the
+ # shared zero-dep parser treats those as independent code points, which
+ # would replace astral characters (emoji) and break Python char-count
+ # parity in chunking/normalization.
+ lib=_load();ptr=lib.mr_call(json.dumps({"op":op,"arg":arg},ensure_ascii=False).encode())
+ if not ptr:raise RuntimeError("mr_call returned null")
+ try:text=ctypes.cast(ptr,ctypes.c_char_p).value.decode()
+ finally:lib.mr_free_string(ptr)
+ env=json.loads(text)
+ if not env.get("ok"):raise RuntimeError(env.get("err"))
+ return env["value"]
+def map_reduce(entries,chunk_size=10):return _call("map_reduce",{"entries":entries,"chunk_size":chunk_size})
+def position_aware(entries):return _call("position_aware",{"entries":entries})
+def fts_query_conjunctive(query):return _call("fts_query_conjunctive",{"query":query})
+def chunk_text(text,size=1500,overlap=150):return _call("chunk_text",{"text":text,"size":size,"overlap":overlap})
+def norm_key(text):return _call("norm_key",{"text":text})
+def fuse_results(entries,research):return _call("fuse_results",{"entries":entries,"research":research})
+def merge_association_rows(base,boosts,rows,budget):return _call("merge_association_rows",{"base":base,"boosts":boosts,"rows":rows,"budget":budget})
+def rank_fusion(dense,bm25,rrf_k=60):return _call("rank_fusion",{"dense":dense,"bm25":bm25,"rrf_k":rrf_k})
+def score_recall_rows(fusion,rows,dense,bm25,budget,min_score,now,half_life):return _call("score_recall_rows",{"fusion":fusion,"rows":rows,"dense":dense,"bm25":bm25,"budget":budget,"min_score":min_score,"now":now,"half_life":half_life})
+def project_chunk_rows(ranks, rows, budget):
+    return _call("project_chunk_rows", {"ranks": ranks, "rows": rows, "budget": budget})

src/rune/ms_loader.py

@@ -0,0 +1,163 @@
+#!/usr/bin/env python3
+"""ctypes loader for the Rust memory_scoring core (H3 slice 1, T4.4).
+
+Contract BUILDER-2026-10-04T08:57:33Z-cli. Gives drift_core the Rust
+scoring trio through the cdylib with no subprocess. No-clock law: `now` is
+always an argument (ISO-8601 string) — the Python originals read the wall
+clock for recency; callers pass it so parity is deterministic.
+
+FFI contract (doc-envelope law — every call returns {"ok", "value"|"err"}):
+  * ms_compute_value({entry, goals, now}) -> number
+  * ms_check_promotion_eligibility({entry, now}) -> [eligible, reason]
+  * ms_pre_commit_gate_entry({entry}) -> {verdict, critics, reason}
+  * ms_free_string(ptr)
+
+FFI segfault law: every symbol gets explicit argtypes + restype (c_void_p
+for returned char* — the default c_int truncates 64-bit pointers).
+
+Zero dependencies. The .so resolves against this repo's crate target dir;
+override with MS_RUST_LIB (a FILE path).
+"""
+
+from __future__ import annotations
+
+import ctypes
+import json
+import os
+from pathlib import Path
+
+_REPO = Path(__file__).resolve().parents[2]
+_CRATE_DIR = _REPO / "src" / "rust" / "memory_scoring"
+_LIB_PATH = Path(
+    os.environ.get(
+        "MS_RUST_LIB", _CRATE_DIR / "target" / "release" / "libmemory_scoring.so"
+    )
+)
+
+_lib = None
+
+
+class MemoryScoringUnavailable(FileNotFoundError):
+    """The Rust core is not built (or MS_RUST_LIB points nowhere). Callers
+    fall back to the Python implementation — strangler law: the fallback is
+    load-bearing until deletion is proven."""
+
+
+def available() -> bool:
+    return _LIB_PATH.is_file()
+
+
+def _load() -> ctypes.CDLL:
+    global _lib
+    if _lib is not None:
+        return _lib
+    if not _LIB_PATH.exists():
+        raise MemoryScoringUnavailable(
+            f"Rust memory_scoring core not built: {_LIB_PATH} missing — run "
+            f"`cargo build --release` in {_CRATE_DIR}"
+        )
+    lib = ctypes.CDLL(str(_LIB_PATH))
+    lib.ms_free_string.argtypes = [ctypes.c_void_p]
+    lib.ms_free_string.restype = None
+    for sym in ("ms_compute_value", "ms_check_promotion_eligibility",
+                "ms_pre_commit_gate_entry", "ms_get_compression_ratio",
+                "ms_compress_text", "ms_compress_entry", "ms_should_warn",
+                "ms_warn_before_compress", "ms_compute_priority",
+                "ms_qualifies_for_cache", "ms_score_gate", "ms_score_finish",
+                "ms_base_level_from_uses"):
+        fn = getattr(lib, sym)
+        fn.argtypes = [ctypes.c_char_p]
+        fn.restype = ctypes.c_void_p  # char* — never default c_int
+    _lib = lib
+    return lib
+
+
+def _call(sym: str, payload: dict):
+    lib = _load()
+    fn = getattr(lib, sym)
+    raw = json.dumps(payload).encode("utf-8")
+    ptr = fn(raw)
+    if not ptr:
+        raise RuntimeError(f"{sym} returned a null pointer")
+    try:
+        text = ctypes.cast(ptr, ctypes.c_char_p).value.decode("utf-8")
+    finally:
+        lib.ms_free_string(ptr)
+    env = json.loads(text)
+    if not env.get("ok"):
+        raise RuntimeError(f"{sym} core error: {env.get('err')}")
+    return env["value"]
+
+
+def compute_value(entry: dict, goals: list | None, now: str) -> float:
+    """Multi-factor value score (0.0-1.0+); now is an ISO-8601 string."""
+    return _call("ms_compute_value", {"entry": entry, "goals": goals, "now": now})
+
+
+def check_promotion_eligibility(entry: dict, now: str) -> tuple:
+    """(eligible, reason) — unpacked from the core's 2-element array."""
+    eligible, reason = _call("ms_check_promotion_eligibility",
+                             {"entry": entry, "now": now})
+    return (eligible, reason)
+
+
+def pre_commit_gate_entry(entry: dict) -> dict:
+    """Three-critic promotion gate for a dict entry (no db context)."""
+    return _call("ms_pre_commit_gate_entry", {"entry": entry})
+
+
+# ── H3 slice 2: drift_compression / drift_cache pure surfaces ────────────────
+
+
+def get_compression_ratio(wash_count: float, rock_status: str) -> float:
+    return _call("ms_get_compression_ratio",
+                 {"wash_count": wash_count, "rock_status": rock_status})
+
+
+def compress_text(text: str, ratio: float) -> str:
+    return _call("ms_compress_text", {"text": text, "ratio": ratio})
+
+
+def compress_entry(entry: dict) -> str:
+    return _call("ms_compress_entry", {"entry": entry})
+
+
+def should_warn(entry: dict) -> bool:
+    return _call("ms_should_warn", {"entry": entry})
+
+
+def warn_before_compress(entry: dict) -> dict:
+    return _call("ms_warn_before_compress", {"entry": entry})
+
+
+def compute_priority(entry: dict) -> float:
+    return _call("ms_compute_priority", {"entry": entry})
+
+
+def qualifies_for_cache(entry: dict) -> bool:
+    return _call("ms_qualifies_for_cache", {"entry": entry})
+
+
+# ── H3 slice 3: warm scoring math ────────────────────────────────────────────
+
+
+def score_gate(neuron: dict, low_text: str, session_context: str | None,
+               semantic_score: float) -> tuple:
+    """(fires, total, keyword_hits) — unpacked from the 3-element array."""
+    fires, total, kw = _call("ms_score_gate", {
+        "neuron": neuron, "low_text": low_text,
+        "session_context": session_context, "semantic_score": semantic_score})
+    return (fires, total, kw)
+
+
+def score_finish(neuron: dict, low_text: str, total: float,
+                 b_i: float | None, cache_priority: float | None,
+                 keyword_hits: float) -> float:
+    return _call("ms_score_finish", {
+        "neuron": neuron, "low_text": low_text, "total": total,
+        "b_i": b_i, "cache_priority": cache_priority,
+        "keyword_hits": keyword_hits})
+
+
+def base_level_from_uses(used_at: list, now: str) -> float:
+    return _call("ms_base_level_from_uses", {"used_at": used_at, "now": now})

src/rune/persona_gate.py

@@ -161,7 +161,33 @@ def load_rules():
     return rules
 
 
+def _cc_pg_core():
+    """Rust cognition_core when available (persona kernels); pin with
+    RUNE_COGNITION_CORE=python."""
+    import os
+    if os.environ.get("RUNE_COGNITION_CORE", "auto") == "python":
+        return None
+    try:
+        from rune import cc_loader
+    except Exception:  # noqa: BLE001 — loader probe failure means fallback
+        return None
+    try:
+        return cc_loader if cc_loader.available() else None
+    except Exception:  # noqa: BLE001 — availability probe never crashes
+        return None
+
+
 def _lex(text):
+    """Distinctive content words (R2 W3.2: Rust kernel when built)."""
+    core = _cc_pg_core()
+    if core is not None:
+        return set(core.persona_lex(text))
+    return _py_lex(text)
+
+
+def _py_lex(text):
+    """Python oracle (parity floor)."""
+
     """Distinctive content words of a rule body (lowercase, >3 chars,
     light-stemmed so plural/singular engage each other; preserves 3-char
     ALL-CAPS acronyms so technical abbreviations match their expansion)."""
@@ -253,6 +279,15 @@ def _lex_input(text):
 
 
 def _overlap(a, b):
+    """Overlap ratio (R2 W3.2: Rust kernel when built)."""
+    core = _cc_pg_core()
+    if core is not None:
+        return core.persona_overlap(sorted(a), sorted(b))
+    return _py_overlap(a, b)
+
+
+def _py_overlap(a, b):
+    """Python oracle (parity floor)."""
     if not a or not b:
         return 0.0
     return len(a & b) / max(1, min(len(a), len(b)))
@@ -338,6 +373,34 @@ def _semantic_engagement(text, rule):
 
 
 def decide(text, rules=None):
+    """The persona decides on a request, deterministically (R2 W3.2:
+    Rust kernel when built; the semantic cosines are gathered here —
+    embedder calls are IO — and passed into the kernel)."""
+    rules = rules if rules is not None else load_rules()
+    core = _cc_pg_core()
+    if core is not None:
+        text_s = (text or "").strip()
+        sems = [_semantic_engagement(text_s, r) for r in rules]
+        return core.persona_decide(text_s, [_rule_json(r) for r in rules],
+                                   PERMISSIVE_MODE, sems)
+    return _py_decide(text, rules)
+
+
+def _rule_json(r) -> dict:
+    """A rule in the kernel's JSON contract (citation rides along when
+    present so _cite stays data-driven)."""
+    return {
+        "text": r["text"], "words": sorted(r["words"]),
+        "core": r["core"], "priority": r.get("priority", 0),
+        "restrictive": r.get("restrictive", False),
+        "user_rule": r.get("user_rule", False),
+        "citation": r.get("citation"),
+    }
+
+
+def _py_decide(text, rules=None):
+    """Python oracle (parity floor) — the ORIGINAL decide body."""
+
     """The persona decides on a request, deterministically, from its own
     stored rules. No generative LLM in the decision path (a local embedding
     model may contribute semantic similarity). Returns a full verdict."""

src/rune/pins.py

@@ -162,8 +162,16 @@ def recall(context, limit=4):
     term = (context or "").lower()
     if not term:
         return []
+    from rune.identity_anchors import _cc_core
+    core = _cc_core()
+    if core is not None:
+        return core.pins_recall(_load(), term, limit)
+    return _py_pin_recall(_load(), term, limit)
+
+
+def _py_pin_recall(recs, term, limit=4):
     out = []
-    for rec in _load():
+    for rec in recs:
         if rec.get("state") != "open":
             continue
         p = _project(rec)

src/rune/query_memory.py

@@ -1,257 +0,0 @@
-#!/usr/bin/env python3
-"""query_memory.py — Query memory system for adaptive retrieval.
-
-The system remembers what kinds of queries it gets, what retrieval
-strategy worked, and adapts its gate logic accordingly.
-
-This prevents dead weight — memories get tested based on usage
-patterns, not just random exploration.
-
-Research basis:
-- IGMiRAG (arXiv:2602.07525): Intuition-guided retrieval
-- Task-Adaptive Retrieval (arXiv:2604.07863): Learning from interaction history
-- MemCon (arXiv:2607.13591): Learned policy for consolidation/forgetting
-- Agent-Native Memory (arXiv:2606.24775): Workload-adaptive routing
-
-Run under ~/.venvs/memory/bin/python3.
-"""
-
-import json
-import os
-import sys
-from collections import Counter, defaultdict
-from datetime import datetime, timezone
-from typing import Dict, List, Optional, Tuple
-
-QUERY_MEMORY_DIR = os.path.expanduser("~/.config/opencode/memory/query_memory")
-QUERY_HISTORY_FILE = os.path.join(QUERY_MEMORY_DIR, "history.jsonl")
-TOPIC_STATS_FILE = os.path.join(QUERY_MEMORY_DIR, "topic_stats.json")
-
-# Topic keywords for classification
-TOPIC_KEYWORDS = {
-    "guitar": ["guitar", "music", "teaching", "course", "lesson", "chord", "scale"],
-    "coding": ["code", "python", "script", "function", "debug", "build", "deploy"],
-    "memory": ["memory", "recall", "remember", "forget", "consolidat", "neuron"],
-    "persona": ["persona", "identity", "voice", "constitution", "character"],
-    "project": ["project", "task", "goal", "deadline", "milestone", "progress"],
-    "ai": ["ai", "model", "llm", "agent", "neural", "training", "inference"],
-    "personal": ["nick", "nottingham", "coffee", "coconut", "dog", "ttrpg"],
-    "system": ["system", "config", "install", "setup", "troubleshoot", "error"],
-    "research": ["research", "paper", "study", "analysis", "survey", "evidence"],
-    "creative": ["write", "design", "create", "build", "make", "art", "music"],
-}
-
-
-class QueryMemory:
-    """Query memory system for adaptive retrieval."""
-
-    def __init__(self):
-        os.makedirs(QUERY_MEMORY_DIR, exist_ok=True)
-        self.history: List[dict] = self._load_history()
-        self.topic_stats: Dict[str, dict] = self._load_topic_stats()
-
-    def _load_history(self) -> List[dict]:
-        """Load query history from disk."""
-        if not os.path.exists(QUERY_HISTORY_FILE):
-            return []
-        entries = []
-        with open(QUERY_HISTORY_FILE) as f:
-            for line in f:
-                try:
-                    entries.append(json.loads(line.strip()))
-                except json.JSONDecodeError:
-                    continue
-        return entries
-
-    def _save_history(self, entry: dict):
-        """Append a query entry to history."""
-        with open(QUERY_HISTORY_FILE, "a") as f:
-            f.write(json.dumps(entry) + "\n")
-
-    def _load_topic_stats(self) -> Dict[str, dict]:
-        """Load topic statistics from disk."""
-        if os.path.exists(TOPIC_STATS_FILE):
-            try:
-                with open(TOPIC_STATS_FILE) as f:
-                    return json.load(f)
-            except json.JSONDecodeError:
-                return {}
-        return {}
-
-    def _save_topic_stats(self):
-        """Save topic statistics to disk."""
-        with open(TOPIC_STATS_FILE, "w") as f:
-            json.dump(self.topic_stats, f, indent=2)
-
-    def classify_query(self, query: str) -> str:
-        """Classify a query into a topic.
-
-        Returns the topic with the most keyword matches.
-        Falls back to "general" if no strong match.
-        """
-        query_lower = query.lower()
-        scores = {}
-        for topic, keywords in TOPIC_KEYWORDS.items():
-            score = sum(1 for kw in keywords if kw in query_lower)
-            if score > 0:
-                scores[topic] = score
-
-        if not scores:
-            return "general"
-
-        return max(scores, key=scores.get)
-
-    def record_query(self, query: str, strategy: str, success: bool):
-        """Record a query and its outcome.
-
-        Args:
-            query: The query text
-            strategy: "consolidated" or "full_retrieval"
-            success: Whether the retrieval produced useful results
-        """
-        topic = self.classify_query(query)
-        entry = {
-            "query": query[:100],
-            "topic": topic,
-            "strategy": strategy,
-            "success": success,
-            "timestamp": datetime.now(timezone.utc).isoformat(),
-        }
-        self.history.append(entry)
-        self._save_history(entry)
-
-        # Update topic stats
-        if topic not in self.topic_stats:
-            self.topic_stats[topic] = {
-                "total_queries": 0,
-                "successful_queries": 0,
-                "consolidated_hits": 0,
-                "full_retrieval_hits": 0,
-                "exploration_rate": 0.30,  # default
-            }
-
-        stats = self.topic_stats[topic]
-        stats["total_queries"] += 1
-        if success:
-            stats["successful_queries"] += 1
-        if strategy == "consolidated":
-            stats["consolidated_hits"] += 1
-        else:
-            stats["full_retrieval_hits"] += 1
-
-        # Adaptive exploration rate: decrease for well-tested topics
-        if stats["total_queries"] >= 10:
-            success_rate = stats["successful_queries"] / stats["total_queries"]
-            if success_rate > 0.8:
-                stats["exploration_rate"] = max(0.10, stats["exploration_rate"] - 0.05)
-            elif success_rate < 0.5:
-                stats["exploration_rate"] = min(0.50, stats["exploration_rate"] + 0.05)
-
-        self._save_topic_stats()
-
-    def get_topic_stats(self) -> Dict[str, dict]:
-        """Get topic statistics."""
-        return self.topic_stats
-
-    def adaptive_exploration_rate(self, query: str) -> float:
-        """Get the exploration rate for a query based on its topic.
-
-        Well-tested topics have lower exploration rates.
-        Untested topics have higher exploration rates.
-        """
-        topic = self.classify_query(query)
-        if topic in self.topic_stats:
-            return self.topic_stats[topic].get("exploration_rate", 0.30)
-        return 0.50  # untested topics get high exploration
-
-    def get_dead_weight_topics(self) -> List[str]:
-        """Get topics with low proven uses (dead weight)."""
-        dead = []
-        for topic, stats in self.topic_stats.items():
-            if stats["total_queries"] < 5:
-                dead.append(topic)
-        return dead
-
-    def get_health_report(self) -> dict:
-        """Get a health report of the query memory system."""
-        total_queries = len(self.history)
-        topics = len(self.topic_stats)
-        dead_topics = len(self.get_dead_weight_topics())
-
-        return {
-            "total_queries": total_queries,
-            "topics_tracked": topics,
-            "dead_weight_topics": dead_topics,
-            "topic_stats": self.topic_stats,
-        }
-
-
-# ═══════════════════════════════════════════════════════════════════════════════
-# CLI
-# ═══════════════════════════════════════════════════════════════════════════════
-
-
-def main():
-    import argparse
-
-    parser = argparse.ArgumentParser(description="Query memory system")
-    sub = parser.add_subparsers(dest="cmd")
-
-    # record <query> --strategy <s> --success
-    p_rec = sub.add_parser("record", help="Record a query")
-    p_rec.add_argument("query", nargs="+")
-    p_rec.add_argument("--strategy", default="consolidated")
-    p_rec.add_argument("--success", action="store_true")
-
-    # stats
-    sub.add_parser("stats", help="Show topic statistics")
-
-    # rate <query>
-    p_rate = sub.add_parser("rate", help="Get exploration rate for a query")
-    p_rate.add_argument("query", nargs="+")
-
-    # health
-    sub.add_parser("health", help="Show health report")
-
-    args = parser.parse_args()
-
-    if not args.cmd:
-        parser.print_help()
-        sys.exit(1)
-
-    qm = QueryMemory()
-
-    if args.cmd == "record":
-        query = " ".join(args.query)
-        qm.record_query(query, args.strategy, args.success)
-        print(f"Recorded: {query[:50]} → {args.strategy} ({'success' if args.success else 'fail'})")
-
-    elif args.cmd == "stats":
-        stats = qm.get_topic_stats()
-        if stats:
-            print("Topic Statistics:")
-            for topic, s in stats.items():
-                print(
-                    f"  {topic}: {s['total_queries']} queries, {s['successful_queries']} success, rate={s['exploration_rate']:.2f}"
-                )
-        else:
-            print("No topic statistics yet.")
-
-    elif args.cmd == "rate":
-        query = " ".join(args.query)
-        rate = qm.adaptive_exploration_rate(query)
-        topic = qm.classify_query(query)
-        print(f"Query: {query[:50]}")
-        print(f"Topic: {topic}")
-        print(f"Exploration rate: {rate:.2f}")
-
-    elif args.cmd == "health":
-        report = qm.get_health_report()
-        print("Query Memory Health:")
-        print(f"  Total queries: {report['total_queries']}")
-        print(f"  Topics tracked: {report['topics_tracked']}")
-        print(f"  Dead weight topics: {report['dead_weight_topics']}")
-
-
-if __name__ == "__main__":
-    main()

src/rune/rune_tui.py

@@ -8,7 +8,7 @@ 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: v0.89.0
+Version: v0.99.6
 Features: 41 (24 original + 17 new native commands)
 
 Usage:
@@ -74,6 +74,14 @@ import voice_sync
 import provider_registry
 import goal
 import rune_operator
+import tui_transport as _tui_transport
+
+
+def _operator_transport():
+    """H4 slice 1 transport seam: the TUI's operator calls route through
+    tui_transport (RUNE_TUI_TRANSPORT=inprocess|v1, default inprocess —
+    zero behavior change until the wave opts in)."""
+    return _tui_transport.get_transport()
 import cron_engine
 import night_mode
 import time_awareness
@@ -102,6 +110,56 @@ try:
 except ImportError:
     BACKEND_AVAILABLE = False
 
+
+def collect_post_response_signals(response: str, messages_count: int) -> list[str]:
+    """Gather the operational signals that used to each print a dim
+    system message after every task/build response (the dim-spam source,
+    T5.13): budget pressure, degraded claims, growth delta, the periodic
+    self-improvement cycle.
+
+    PURE and headless — no channel, no app. The caller renders ONE
+    collapsed line (or none when nothing fired). Queued-message execution
+    and on-complete cron firing stay in the worker: they move real
+    messages, not chatter, and keep their own echoes.
+
+    Returns short human-readable fragments; empty list = silence.
+    """
+    signals: list[str] = []
+    if not BACKEND_AVAILABLE:
+        return signals
+    try:
+        budget_data = provider_budget.get_status()
+        ratios = []
+        for provider in budget_data.get("providers", {}).values():
+            if provider.get("monthly_limit", 0) > 0:
+                ratios.append(provider.get("monthly_used", 0) / provider["monthly_limit"])
+            if provider.get("token_limit", 0) > 0:
+                ratios.append(provider.get("tokens_used", 0) / provider["token_limit"])
+        usage_percent = max(ratios, default=0) * 100
+        if usage_percent > 80:
+            signals.append(f"⚠ Budget: {usage_percent:.0f}% used")
+    except Exception:
+        pass
+    try:
+        claims_result = claim_audit.scan_text(response[:500])
+        if claims_result and claims_result.get("degraded"):
+            signals.append(f"⚠ Claims degraded: {len(claims_result['degraded'])}")
+    except Exception:
+        pass
+    try:
+        growth = growth_delta.check()
+        if growth and growth.get("delta"):
+            signals.append(f"📈 Growth: {growth['delta']}")
+    except Exception:
+        pass
+    try:
+        if messages_count % 10 == 0:
+            self_improve.run()
+            signals.append("🔄 Self-improvement cycle triggered")
+    except Exception:
+        pass
+    return signals
+
 from textual.app import App, ComposeResult
 from textual.containers import Horizontal, Vertical, VerticalScroll
 from textual.widgets import Button, Header, Input, ProgressBar, RichLog, Static
@@ -1144,7 +1202,7 @@ class ChannelView(Vertical):
         TUI must never fail to mount because the ledger is unavailable.
         """
         try:
-            window = rune_operator.get_conversation_window(self.channel_id, n=8)
+            window = _operator_transport().get_conversation_window(self.channel_id, n=8)
         except Exception:
             return
         for msg in window:
@@ -1525,18 +1583,21 @@ class RuneApp(App):
     def compose(self) -> ComposeResult:
         yield Header()
         with Horizontal(id="channels"):
-            yield ChannelView(
-                "task",
-                "[b]TASK[/b] — focused work",
-                classes="channel-view",
-                id="task-channel",
-            )
+            # T5.14 (Nick 2026-10-05): chat LEFT, task RIGHT — feels more
+            # natural (conversation first, focused work second). WorkPane
+            # stays third.
             yield ChannelView(
                 "chat",
                 "[b]CHAT[/b] — free conversation",
                 classes="channel-view",
                 id="chat-channel",
             )
+            yield ChannelView(
+                "task",
+                "[b]TASK[/b] — focused work",
+                classes="channel-view",
+                id="task-channel",
+            )
             # P1-07 (#30): third collapsible column — the operational index.
             yield WorkPane(id="work-pane")
         with Horizontal(id="footer-bar"):
@@ -1705,6 +1766,8 @@ class RuneApp(App):
             the load_tasks fallback then handles."""
             try:
                 import rune_operator as _ro
+                # H4: private _task_state peek — stays in-process by design
+                # (the /v1 surface carries the four public calls only).
                 return getattr(_ro.get_operator(), "_task_state", None)
             except Exception as exc:  # noqa: BLE001 — deliberate degradation: startup ordering; the fallback path handles it and the degradation is logged
                 print(f"[task-loader] canonical repo unavailable ({exc}); "
@@ -1885,7 +1948,7 @@ class RuneApp(App):
         # Show version info
         self.chat_channel.add_message(
             "system",
-            f"[dim]Rune v0.88.4 | Textual TUI | {len(loaded)} native modules[/dim]",
+            f"[dim]Rune v0.99.6 | Textual TUI | {len(loaded)} native modules[/dim]",
         )
 
         # Auto-show night mode suggestion if evening/night hours
@@ -2809,7 +2872,7 @@ class RuneApp(App):
 
     def _cmd_rune(self, arg):
         try:
-            status = rune_operator.get_status()
+            status = _operator_transport().get_status()
             lines = ["[bold]🎭 Rune[/bold]"]
             lines.append(f"  Identity: {status['identity']}")
             lines.append(f"  Role: {status['role']}")
@@ -3621,7 +3684,7 @@ class RuneApp(App):
                 # Rune sends task to model with the selected model.
                 # channel is forwarded so the canonical task ledger (#18)
                 # keeps per-channel task identity.
-                result = rune_operator.send_task(text, model=model_name, channel=channel)
+                result = _operator_transport().send_task(text, model=model_name, channel=channel)
 
                 # Remove thinking indicator
                 thinking.stop()
@@ -3727,69 +3790,13 @@ class RuneApp(App):
                         except Exception:
                             pass
 
-                        # Auto-warn budget when >80% used
-                        try:
-                            if BACKEND_AVAILABLE:
-                                budget_data = provider_budget.get_status()
-                                ratios = []
-                                for provider in budget_data.get("providers", {}).values():
-                                    if provider.get("monthly_limit", 0) > 0:
-                                        ratios.append(provider.get("monthly_used", 0) / provider["monthly_limit"])
-                                    if provider.get("token_limit", 0) > 0:
-                                        ratios.append(provider.get("tokens_used", 0) / provider["token_limit"])
-                                usage_percent = max(ratios, default=0) * 100
-                                if usage_percent > 80:
-                                    ch.add_message(
-                                        "system",
-                                        f"[dim]⚠ Budget: {usage_percent:.0f}% used[/dim]",
-                                    )
-                        except Exception:
-                            pass
-
-                        # Auto-check claims after response
-                        try:
-                            if BACKEND_AVAILABLE:
-                                claims_result = claim_audit.scan_text(response[:500])
-                                if claims_result and claims_result.get("degraded"):
-                                    ch.add_message(
-                                        "system",
-                                        f"[dim]⚠ Claims degraded: {len(claims_result['degraded'])}[/dim]",
-                                    )
-                        except Exception:
-                            pass
-
-                        # NOTE (Runtime Reachability audit 2026-09-10): the
-                        # old hook_engine.fire("post_message", ...) call here
-                        # was dead — hook_engine defines no fire(); the
-                        # AttributeError was silently swallowed, so "hooks"
-                        # never ran. Removed rather than left as a false-
-                        # liveness surface. Real hook dispatch is unwired
-                        # (microkernel.fire has zero callers) — see the
-                        # reachability audit, P3.
-
-                        # Auto-check growth delta
-                        try:
-                            if BACKEND_AVAILABLE:
-                                growth = growth_delta.check()
-                                if growth and growth.get("delta"):
-                                    ch.add_message(
-                                        "system",
-                                        f"[dim]📈 Growth: {growth['delta']}[/dim]",
-                                    )
-                        except Exception:
-                            pass
-
-                        # Auto-improve every 10 messages
-                        try:
-                            if self.status_bar.messages_count % 10 == 0:
-                                if BACKEND_AVAILABLE:
-                                    self_improve.run()
-                                    ch.add_message(
-                                        "system",
-                                        f"[dim]🔄 Self-improvement cycle triggered[/dim]",
-                                    )
-                        except Exception:
-                            pass
+                        # T5.13 dim-spam consolidation: previously five
+                        # separate dim system messages printed after every
+                        # response. ONE collapsed line now — empty means
+                        # silence, not a dash.
+                        signals = collect_post_response_signals(response[:500], self.status_bar.messages_count)
+                        if signals:
+                            ch.add_message("system", "[dim]" + " · ".join(signals) + "[/dim]")
                 elif result.get("error") == "RESEARCH_REQUIRED":
                     # Nonterminal routing disposition, not failure (2026-09-10):
                     # the task hit the deep-research floor and was dispatched.
@@ -3855,7 +3862,7 @@ class RuneApp(App):
             button.disabled = True
 
         async def _resolve() -> None:
-            result = rune_operator.resolve_pending_approval(event.approved)
+            result = _operator_transport().resolve_pending_approval(event.approved)
             channel = widget.channel
             ch = self.task_channel if channel == "task" else self.chat_channel
             log = ch.query_one(f"#log-{ch.channel_id}", VerticalScroll)
@@ -3970,13 +3977,13 @@ class RuneApp(App):
             pass
 
     def action_resize_left(self) -> None:
-        """Shrink task channel, grow chat channel."""
-        self.task_width = max(20, self.task_width - 5)
+        """Shrink the LEFT channel (chat, post-swap), grow the RIGHT (task)."""
+        self.task_width = min(80, self.task_width + 5)
         self._apply_resize()
 
     def action_resize_right(self) -> None:
-        """Grow task channel, shrink chat channel."""
-        self.task_width = min(80, self.task_width + 5)
+        """Grow the LEFT channel (chat), shrink the RIGHT (task)."""
+        self.task_width = max(20, self.task_width - 5)
         self._apply_resize()
 
     def _apply_resize(self):

src/rune/safety_override.py

@@ -86,6 +86,110 @@ PATTERN_MAX_PATTERNS = 200
 # ═══════════════════════════════════════════════════════════════════════════════
 
 
+def _keyword_stopwords() -> list:
+    """Gather seam (W3.4): the pattern-keyword stopword table as a sorted
+    list — data, not logic; both engines read this module-owned table."""
+    return sorted(_KEYWORD_STOPWORDS)
+
+
+_KEYWORD_STOPWORDS = frozenset({
+    "the",
+    "and",
+    "for",
+    "are",
+    "but",
+    "not",
+    "you",
+    "all",
+    "can",
+    "had",
+    "her",
+    "was",
+    "one",
+    "our",
+    "out",
+    "day",
+    "get",
+    "has",
+    "him",
+    "his",
+    "how",
+    "its",
+    "may",
+    "new",
+    "now",
+    "old",
+    "see",
+    "way",
+    "who",
+    "did",
+    "let",
+    "say",
+    "she",
+    "too",
+    "use",
+    "this",
+    "that",
+    "with",
+    "have",
+    "from",
+    "they",
+    "been",
+    "said",
+    "each",
+    "make",
+    "like",
+    "just",
+    "over",
+    "such",
+    "take",
+    "year",
+    "them",
+    "some",
+    "time",
+    "very",
+    "when",
+    "come",
+    "could",
+    "what",
+    "there",
+    "their",
+    "will",
+    "would",
+    "about",
+    "which",
+    "these",
+    "other",
+    "into",
+    "more",
+    "than",
+    "also",
+    "then",
+})
+
+
+def _core():
+    """The Rust cognition_core when available (strangler: Python fallback
+    load-bearing). RUNE_COGNITION_CORE=python pins the fallback."""
+    return None if cc_loader_pin() else _cc_probe()
+
+
+def _cc_probe():
+    from rune import cc_loader as _cl
+    try:
+        return _cl if _cl.available() else None
+    except Exception:  # noqa: BLE001, S110 — loader probe never crashes the fallback
+        return None
+
+
+def cc_loader_pin() -> bool:
+    """The env pin: RUNE_COGNITION_CORE=python → kernels OFF (shared probe).
+"""
+    import os
+
+    return os.environ.get("RUNE_COGNITION_CORE", "auto") == "python"
+
+
 @dataclass
 class OverridePattern:
     """A learned pattern that requires override."""
@@ -105,7 +209,14 @@ class OverridePattern:
         return self.successes / total
 
     def matches(self, text: str) -> bool:
-        """Check if text matches this pattern's keywords."""
+        """Check if text matches this pattern's keywords. Deterministic
+        keyword-count check (kernel port NOT owed here — the W3.4 safety
+        kernels cover the params/rows surfaces; this tiny comparison stays
+        Python-side per the membrane law: gather/IO in Python, kernels for
+        deterministic row work already ported)."""
+        return self._py_matches(text)
+
+    def _py_matches(self, text: str) -> bool:
         text_lower = text.lower()
         matches = sum(1 for kw in self.keywords if kw.lower() in text_lower)
         return matches >= PATTERN_MIN_KEYWORDS
@@ -293,84 +404,12 @@ class SafetyOverride:
             self.stats.patterns_learned += 1
 
     def _extract_keywords(self, text: str) -> list[str]:
-        """Extract distinctive keywords from text for pattern matching."""
-        # Remove common stop words, keep words > 3 chars
-        stop_words = {
-            "the",
-            "and",
-            "for",
-            "are",
-            "but",
-            "not",
-            "you",
-            "all",
-            "can",
-            "had",
-            "her",
-            "was",
-            "one",
-            "our",
-            "out",
-            "day",
-            "get",
-            "has",
-            "him",
-            "his",
-            "how",
-            "its",
-            "may",
-            "new",
-            "now",
-            "old",
-            "see",
-            "way",
-            "who",
-            "did",
-            "let",
-            "say",
-            "she",
-            "too",
-            "use",
-            "this",
-            "that",
-            "with",
-            "have",
-            "from",
-            "they",
-            "been",
-            "said",
-            "each",
-            "make",
-            "like",
-            "just",
-            "over",
-            "such",
-            "take",
-            "year",
-            "them",
-            "some",
-            "time",
-            "very",
-            "when",
-            "come",
-            "could",
-            "what",
-            "there",
-            "their",
-            "will",
-            "would",
-            "about",
-            "which",
-            "these",
-            "other",
-            "into",
-            "more",
-            "than",
-            "also",
-            "then",
-        }
+        """Extract distinctive keywords from text for pattern matching.
+        Keyword extraction stays Python-side (W3.4 scope note): the safety
+        kernels cover the params/rows surfaces; this extractor is a gather
+        (IO-adjacent list build) per the membrane law."""
         words = re.findall(r"[a-z]{4,}", text.lower())
-        keywords = [w for w in words if w not in stop_words]
+        keywords = [w for w in words if w not in _KEYWORD_STOPWORDS]
         # Return top 5 most distinctive words
         return keywords[:5]
 

src/rune/sc_loader.py

@@ -0,0 +1,96 @@
+#!/usr/bin/env python3
+"""ctypes loader for the Rust scaffold_core (R2 Wave 1).
+
+Contract BUILDER-2026-10-04T15:25:33Z-cli. The V1-ACCEPTED scaffolding
+engine's deterministic core through the cdylib with no subprocess.
+No-clock law: `now` always arrives inside the inputs.
+
+FFI contract (doc-envelope law — every call returns {"ok", "value"|"err"}):
+  * sc_check_transition({current, target}) -> {legal, error?}
+  * sc_close_quality(inputs) -> contract_quality bucket dict
+  * sc_free_string(ptr)
+
+FFI segfault law: every symbol gets explicit argtypes + restype (c_void_p
+for returned char*). Zero dependencies; override the .so with SC_RUST_LIB
+(a FILE path).
+"""
+
+from __future__ import annotations
+
+import ctypes
+import json
+import os
+from pathlib import Path
+
+_REPO = Path(__file__).resolve().parents[2]
+_CRATE_DIR = _REPO / "src" / "rust" / "scaffold_core"
+_LIB_PATH = Path(
+    os.environ.get(
+        "SC_RUST_LIB", _CRATE_DIR / "target" / "release" / "libscaffold_core.so"
+    )
+)
+
+_lib = None
+
+
+class ScaffoldCoreUnavailable(FileNotFoundError):
+    """The Rust core is not built (or SC_RUST_LIB points nowhere). Callers
+    fall back to the Python implementation — strangler law."""
+
+
+def available() -> bool:
+    return _LIB_PATH.is_file()
+
+
+def _load() -> ctypes.CDLL:
+    global _lib
+    if _lib is not None:
+        return _lib
+    if not _LIB_PATH.exists():
+        raise ScaffoldCoreUnavailable(
+            f"Rust scaffold_core not built: {_LIB_PATH} missing — run "
+            f"`cargo build --release` in {_CRATE_DIR}"
+        )
+    lib = ctypes.CDLL(str(_LIB_PATH))
+    lib.sc_free_string.argtypes = [ctypes.c_void_p]
+    lib.sc_free_string.restype = None
+    for sym in ("sc_check_transition", "sc_close_quality",
+                "sc_language_placement"):
+        fn = getattr(lib, sym)
+        fn.argtypes = [ctypes.c_char_p]
+        fn.restype = ctypes.c_void_p  # char* — never default c_int
+    _lib = lib
+    return lib
+
+
+def _call(sym: str, payload: dict):
+    lib = _load()
+    fn = getattr(lib, sym)
+    raw = json.dumps(payload).encode("utf-8")
+    ptr = fn(raw)
+    if not ptr:
+        raise RuntimeError(f"{sym} returned a null pointer")
+    try:
+        text = ctypes.cast(ptr, ctypes.c_char_p).value.decode("utf-8")
+    finally:
+        lib.sc_free_string(ptr)
+    env = json.loads(text)
+    if not env.get("ok"):
+        raise RuntimeError(f"{sym} core error: {env.get('err')}")
+    return env["value"]
+
+
+def check_transition(current: str, target: str) -> dict:
+    """Phase-transition legality verdict ({legal} or {legal, error})."""
+    return _call("sc_check_transition", {"current": current, "target": target})
+
+
+def close_quality(inputs: dict) -> dict:
+    """The closure classification buckets from gathered inputs."""
+    return _call("sc_close_quality", inputs)
+
+
+def language_placement(project: str, characteristics: list) -> dict:
+    """The protocol's language-placement verdict (R2 Wave 1)."""
+    return _call("sc_language_placement",
+                 {"project": project, "characteristics": characteristics})

src/rune/scaffold.py

@@ -488,6 +488,64 @@ class Scaffold:
     def contract(self, doc: dict, contract_id: str) -> dict | None:
         return entity(doc, f"contract:{contract_id}")
 
+    def _py_close_quality(self, inputs: dict) -> dict:
+        """Python core of the closure classification (R2 Wave 1 parity
+        oracle — scaffold_core.close_quality computes from the same input
+        shape). Pure bucket math; side effects stay in close_contract."""
+        affected = set(inputs.get("affected_entities") or [])
+        expected_new = set(inputs.get("expected_new_entities") or [])
+        expected_runtime = set(inputs.get("expected_runtime_effects") or [])
+        observed_evidence = inputs.get("observed_evidence") or []
+        predicted = inputs.get("predicted_frontier")
+        obs_set = {item.get("entity", "") for item in observed_evidence}
+        obs_set.discard("")
+
+        pred_existing = set(inputs.get("predicted_existing_affected") or [])
+        pred_existing |= affected
+        if predicted is not None:
+            pred_existing |= {
+                x
+                for k in ("level0_direct", "level1_obligations", "contracts", "level2_verification")
+                for x in predicted.get(k, [])
+            }
+
+        correctly_predicted = sorted(pred_existing & obs_set)
+        predicted_but_unaffected = sorted(pred_existing - obs_set)
+        expected_new_observed = sorted(expected_new & obs_set)
+        expected_new_missing = sorted(expected_new - obs_set)
+        matched_runtime = {o for o in obs_set if any(eff.startswith(o) for eff in expected_runtime)}
+        expected_runtime_observed = sorted(
+            eff for eff in expected_runtime if any(eff.startswith(o) for o in matched_runtime)
+        )
+        genuinely_unexpected_new = sorted(obs_set - pred_existing - expected_new - matched_runtime)
+
+        return {
+            "predicted_existing_affected": sorted(pred_existing),
+            "expected_new_entities": sorted(expected_new),
+            "observed": sorted(obs_set),
+            "observed_existing": correctly_predicted,
+            "observed_new": sorted(obs_set & (expected_new | (obs_set - pred_existing))),
+            "correctly_predicted": correctly_predicted,
+            "predicted_but_unaffected": predicted_but_unaffected,
+            "expected_new_observed": expected_new_observed,
+            "expected_new_missing": expected_new_missing,
+            "expected_runtime_effects": sorted(expected_runtime),
+            "expected_runtime_observed": expected_runtime_observed,
+            "expected_runtime_missing": sorted(expected_runtime - obs_set),
+            "genuinely_unexpected_new": genuinely_unexpected_new,
+            "missed": genuinely_unexpected_new,
+            "needless": predicted_but_unaffected,
+            "candidate_corrections": [
+                {
+                    "entity": x,
+                    "status": "CANDIDATE",
+                    "note": "genuinely unexpected new surface — evidence required before store update",
+                }
+                for x in genuinely_unexpected_new
+            ],
+            "evidence_sources": sorted({item.get("source", "unattributed") for item in observed_evidence}),
+        }
+
     def snapshot_predicted_frontier(self, doc: dict, contract_id: str, seed_entity_ids: list[str]) -> dict:
         """Persist the predicted impact frontier at approval time — the input
         to closure's predicted-vs-observed comparison."""
@@ -541,72 +599,28 @@ class Scaffold:
             raise ValueError(f"contract not found: {contract_id}")
         if e.get("phase") not in ("superseding", "verifying"):
             raise IllegalPhaseTransition(f"close requires superseding/verifying phase, got {e.get('phase')}")
-        predicted = e.get("ext", {}).get("predicted_frontier")
-        affected = e.get("identities", {}).get("affected_entities", [])
-        expected_new = set(e.get("identities", {}).get("expected_new_entities", []))
-        # Tranche 5 §14: expected RUNTIME effects (deployment:current advances
-        # etc.) are prediction/accounting metadata, not workflow steps. An
-        # observed entity matching an expected runtime effect is EXPECTED,
-        # not genuinely unexpected — but only when independently observed
-        # (§15: prediction never self-certifies; the evidence item must exist).
-        expected_runtime = set(e.get("ext", {}).get("expected_runtime_effects", []))
-        quality: dict = {"contract": contract_id, "captured_at": now()}
-
         # independent observed impact (§17): evidence items only
         obs = record_observed_impact(doc, contract_id, observed_evidence or [])
-        obs_set = set(obs["observed_entities"])
 
-        pred_existing = set(e.get("ext", {}).get("predicted_existing_affected", []))
-        pred_existing |= set(affected)
-        if predicted is not None:
-            pred_existing |= {
-                x
-                for k in ("level0_direct", "level1_obligations", "contracts", "level2_verification")
-                for x in predicted.get(k, [])
-            }
+        # R2 Wave 1: the bucket math is factored out so the Rust engine
+        # (scaffold_core.close_quality) computes from the SAME gathered
+        # inputs — the production ledger replay is the parity oracle.
+        inputs = {
+            "contract_id": contract_id,
+            "phase": e.get("phase", "verifying"),
+            "affected_entities": e.get("identities", {}).get("affected_entities", []),
+            "expected_new_entities": e.get("identities", {}).get("expected_new_entities", []),
+            "predicted_existing_affected": e.get("ext", {}).get("predicted_existing_affected", []),
+            "predicted_frontier": e.get("ext", {}).get("predicted_frontier"),
+            "expected_runtime_effects": e.get("ext", {}).get("expected_runtime_effects", []),
+            "observed_evidence": observed_evidence or [],
+            "now": now(),
+        }
+        quality = self._py_close_quality(inputs)
+        quality["contract"] = contract_id
+        quality["captured_at"] = inputs["now"]
+        quality["observed"] = obs["observed_entities"]
 
-        correctly_predicted = sorted(pred_existing & obs_set)
-        predicted_but_unaffected = sorted(pred_existing - obs_set)
-        expected_new_observed = sorted(expected_new & obs_set)
-        expected_new_missing = sorted(expected_new - obs_set)
-        # effect strings are phrases ("deployment:current advances"); an
-        # observed entity matches when an expected effect STARTS with its id
-        matched_runtime = {o for o in obs_set if any(eff.startswith(o) for eff in expected_runtime)}
-        expected_runtime_observed = sorted(
-            eff for eff in expected_runtime if any(eff.startswith(o) for o in matched_runtime)
-        )
-        expected_runtime_missing = sorted(expected_runtime - set(expected_runtime_observed))
-        genuinely_unexpected_new = sorted(obs_set - pred_existing - expected_new - matched_runtime)
-
-        quality.update(
-            {
-                "predicted_existing_affected": sorted(pred_existing),
-                "expected_new_entities": sorted(expected_new),
-                "observed": sorted(obs_set),  # legacy union (Tranche 2 readers)
-                "observed_existing": correctly_predicted,
-                "observed_new": sorted(obs_set & (expected_new | (obs_set - pred_existing))),
-                "correctly_predicted": correctly_predicted,
-                "predicted_but_unaffected": predicted_but_unaffected,
-                "expected_new_observed": expected_new_observed,
-                "expected_new_missing": expected_new_missing,
-                "expected_runtime_effects": sorted(expected_runtime),
-                "expected_runtime_observed": expected_runtime_observed,
-                "expected_runtime_missing": sorted(expected_runtime - obs_set),
-                "genuinely_unexpected_new": genuinely_unexpected_new,
-                # legacy aliases (Tranche 2/3 consumers)
-                "missed": genuinely_unexpected_new,
-                "needless": predicted_but_unaffected,
-                "candidate_corrections": [
-                    {
-                        "entity": x,
-                        "status": "CANDIDATE",
-                        "note": "genuinely unexpected new surface — evidence required before store update",
-                    }
-                    for x in genuinely_unexpected_new
-                ],
-                "evidence_sources": sorted({item.get("source", "unattributed") for item in (observed_evidence or [])}),
-            }
-        )
         if scope_files is not None:
             quality["scope_check"] = self.check_scope(doc, contract_id, scope_files)
         e.setdefault("ext", {})["contract_quality"] = quality

src/rune/spine.py

@@ -53,6 +53,12 @@ from rune.structural_store import (  # shared generic core (SCAFFOLD-TRANCHE-001
     reconcile_authorities, mark_conflict, resolve_status, authority_health,
     dedupe_observations as _ss_dedupe_observations,
 )
+from rune.spine_language import (  # noqa: F401 — re-exported (import-compat): the
+    # #2465 doc-level transforms live here now (giant-file carve); tests and
+    # the canary_spine_meta read them THROUGH spine, exactly as before.
+    _classification_sides, _place_languages, _normalize_discovery_ids,
+    _apply_contract_discoveries, _contract_discoveries,
+)
 
 SCHEMA_VERSION = 1
 
@@ -148,6 +154,141 @@ def _canary_registry() -> list[str]:
         return []
 
 
+# ── meta-scaffold surface projections (H-meta, contract
+#    BUILDER-2026-10-04T06:24:56Z-cli): every part of rune gets a modeled
+#    entity. These projectors run in the SEEDED derivation path (build()
+#    after carry-forward), so they fire on every rebuild — manifest ingest
+#    alone would only fire on a cold store.
+
+WORKFLOWS_DIR = ROOT / ".gitea" / "workflows"
+
+
+def _declared_surfaces() -> dict:
+    """Umbrella-declared non-module surfaces: rust crates, Go surfaces,
+    configs. The manifest (config/umbrellas.json) is the declaration
+    authority — same law as modules, new kinds."""
+    try:
+        manifest = json.loads((ROOT / "config" / "umbrellas.json").read_text())
+    except (OSError, json.JSONDecodeError):
+        return {"rust_crates": [], "go_surfaces": [], "configs": []}
+    out = {"rust_crates": [], "go_surfaces": [], "configs": []}
+    for name, u in manifest.get("umbrellas", {}).items():
+        for crate in u.get("rust_crates", []):
+            out["rust_crates"].append((crate, name))
+        for surface in u.get("go_surfaces", []):
+            out["go_surfaces"].append((surface, name))
+        for cfg in u.get("configs", []):
+            out["configs"].append((cfg, name))
+    return out
+
+
+def project_meta_surfaces(doc: dict, inputs: dict | None = None) -> int:
+    """Project rust-crate / go-surface / config / workflow entities.
+
+    Deterministic: declared surfaces come from the umbrella manifest,
+    workflows from a sorted filesystem scan. Ids follow the kind:name
+    convention (rust-crate:evidence_provenance, go-surface:rune-entry,
+    config:go-version.txt, workflow:ci.yml).
+
+    H3-spine: when `inputs` is given (the gather-driven path), every
+    filesystem probe comes from the gathered dict so the Rust core and the
+    Python fallback consume byte-identical scans. The no-inputs path gathers
+    on the spot (backward compatibility for direct callers)."""
+    count = 0
+    if inputs is None:
+        inputs = _gather_meta_inputs()
+    manifest = inputs.get("config_manifest") or {}
+    declared = {"rust_crates": [], "go_surfaces": [], "configs": []}
+    for name, u in manifest.get("umbrellas", {}).items():
+        for crate in u.get("rust_crates", []):
+            declared["rust_crates"].append((crate, name))
+        for surface in u.get("go_surfaces", []):
+            declared["go_surfaces"].append((surface, name))
+        for cfg in u.get("configs", []):
+            declared["configs"].append((cfg, name))
+    crate_dirs = set(inputs.get("crate_dirs", []))
+    go_dirs = set(inputs.get("go_dirs", []))
+    config_files = set(inputs.get("config_files", []))
+    crate_canaries = inputs.get("crate_canaries", {})
+    for crate, umbrella in declared["rust_crates"]:
+        cid = f"rust-crate:{crate}"
+        add_entity(doc, id=cid, kind="rust-crate", tags=["code"],
+                   identities={"source": f"src/rust/{crate}"},
+                   evidence_refs=[f"umbrella-manifest#{umbrella}"],
+                   maturity="PRESENT" if crate in crate_dirs else "DECLARED")
+        add_relationship(doc, type="belongs_to", from_id=cid,
+                         to_id=f"subsystem:{umbrella}",
+                         evidence_refs=[f"umbrella-manifest#{umbrella}"])
+        # crate-resident canaries: projected from the crate dir itself —
+        # they fail the src/rune manifest-canary convention by design
+        # (they verify the crate, they belong to the crate).
+        if crate in crate_dirs:
+            for stem in crate_canaries.get(crate, []):
+                mid = f"module:{stem}"
+                add_entity(doc, id=mid, kind="module", tags=["code", "canary"],
+                           identities={"source": f"src/rust/{crate}/{stem}.py"},
+                           evidence_refs=[f"crate-scan:{crate}"],
+                           maturity="PRESENT")
+                add_relationship(doc, type="obligated_canary", from_id=cid,
+                                 to_id=mid, evidence_refs=[f"crate-scan:{crate}"])
+        count += 1
+    for surface, umbrella in declared["go_surfaces"]:
+        gid = f"go-surface:{surface}"
+        add_entity(doc, id=gid, kind="go-surface", tags=["code"],
+                   identities={"source": f"src/go/{surface}"},
+                   evidence_refs=[f"umbrella-manifest#{umbrella}"],
+                   maturity="PRESENT" if surface in go_dirs else "DECLARED")
+        add_relationship(doc, type="belongs_to", from_id=gid,
+                         to_id=f"subsystem:{umbrella}",
+                         evidence_refs=[f"umbrella-manifest#{umbrella}"])
+        count += 1
+    for cfg, umbrella in declared["configs"]:
+        cid = f"config:{cfg}"
+        add_entity(doc, id=cid, kind="config",
+                   identities={"source": cfg},
+                   evidence_refs=[f"umbrella-manifest#{umbrella}"],
+                   maturity="PRESENT" if cfg in config_files else "DECLARED")
+        add_relationship(doc, type="belongs_to", from_id=cid,
+                         to_id=f"subsystem:{umbrella}",
+                         evidence_refs=[f"umbrella-manifest#{umbrella}"])
+        count += 1
+    for wf in inputs.get("workflows", []):
+        wid = f"workflow:{wf}"
+        add_entity(doc, id=wid, kind="workflow", tags=["infra"],
+                   identities={"source": f".gitea/workflows/{wf}"},
+                   evidence_refs=["workflow-scan"],
+                   maturity="PRESENT")
+        add_relationship(doc, type="belongs_to", from_id=wid,
+                         to_id="subsystem:governance",
+                         evidence_refs=["workflow-scan"])
+        count += 1
+    return count
+
+
+def _gather_meta_inputs() -> dict:
+    """The meta-surface scan slice (shared by the full build gather)."""
+    declared = _declared_surfaces()
+    crate_dirs = [c for c, _ in declared["rust_crates"]
+                  if (ROOT / "src" / "rust" / c).is_dir()]
+    try:
+        config_manifest = json.loads((ROOT / "config" / "umbrellas.json").read_text())
+    except (OSError, json.JSONDecodeError):
+        config_manifest = None
+    return {
+        "config_manifest": config_manifest,
+        "crate_dirs": crate_dirs,
+        "crate_canaries": {
+            c: sorted(cf.stem for cf in (ROOT / "src" / "rust" / c).glob("canary_*.py"))
+            for c in crate_dirs
+        },
+        "go_dirs": [g for g, _ in declared["go_surfaces"]
+                    if (ROOT / "src" / "go" / g).is_dir()],
+        "config_files": [cfg for cfg, _ in declared["configs"] if (ROOT / cfg).is_file()],
+        "workflows": (sorted(wf.name for wf in WORKFLOWS_DIR.glob("*.yml"))
+                      if WORKFLOWS_DIR.is_dir() else []),
+    }
+
+
 def _deployed_observation() -> dict | None:
     """Observe the deployment authority — never invent it."""
     ident = DEPLOYED_LINK / "src" / "rune" / "_build_identity.json"
@@ -174,15 +315,248 @@ def ingest_umbrellas(doc: dict, manifest_path: Path | None = None) -> int:
     """Phase A: translate the (last manually maintained) umbrella manifest
     into Spine entities + relationships. Refuses a Spine-GENERATED view —
     that guards the ingest cycle after Phase C makes the view output-only.
-    Returns count of subsystems ingested."""
+    Returns count of subsystems ingested. (File-driven wrapper; the logic
+    lives in _ingest_umbrellas_data so the gathered path shares it.)"""
     path = manifest_path or UMBRELLA_MANIFEST
-    text = path.read_text()
-    data = json.loads(text)
+    data = json.loads(path.read_text())
     if GENERATED_VIEW_MARKER in data:
         raise ValueError(
             f"{path} is a Spine-generated compatibility view; refusing to "
             "ingest it (Phase A reads the manual authority exactly once). "
             "Structural membership now lives in the Spine store.")
+    return _ingest_umbrellas_data(doc, data)
+
+
+def _rust_core():
+    """The Rust spine core when available (strangler: Python fallback is
+    load-bearing until deletion is proven). RUNE_SPINE_CORE=python pins the
+    fallback (parity harnesses and pre-cargo environments)."""
+    if os.environ.get("RUNE_SPINE_CORE", "auto") == "python":
+        return None
+    try:
+        from rune import spine_loader
+    except Exception:  # noqa: BLE001 — any loader failure means fallback, never a broken build
+        return None
+    try:
+        return spine_loader if spine_loader.available() else None
+    except Exception:  # noqa: BLE001 — availability probe must never crash the fallback
+        return None
+
+
+
+def _gather_build_inputs(manifest_path: Path | None = None) -> dict:
+    """Every I/O read build() needs, in one place (zero-dep split law:
+    Python scans, the core — Rust or Python — only assembles). Both cores
+    consume this dict, so parity divergence is logic, never environment."""
+    existing = load()
+    if existing:
+        _normalize_discovery_ids(existing)
+    seeded = bool(existing) and any(
+        r["type"] == "belongs_to" for r in existing["relationships"])
+    # ingest manifest: only consulted when the unseeded path needs it
+    # (faithful to the original build(), which never touches the file when
+    # seeded). The parse is TOLERANT here — the Python fallback goes through
+    # the public ingest_umbrellas (which reads + raises like the original,
+    # and stays monkeypatchable for isolation tests); the Rust core consumes
+    # the parsed data on the delegated path.
+    ingest_manifest = None
+    ingest_path = None
+    if not seeded:
+        ingest_path = str(Path(manifest_path) if manifest_path else UMBRELLA_MANIFEST)
+        try:
+            ingest_manifest = json.loads(Path(ingest_path).read_text())
+        except (OSError, json.JSONDecodeError):
+            ingest_manifest = None
+    inputs = {
+        "now": now(),
+        "existing": existing,
+        "manifest": ingest_manifest,
+        "manifest_path": ingest_path,
+        "graph": {m: sorted(deps) for m, deps in _import_graph().items()},
+        "registry": _canary_registry(),
+        "tested": sorted(_test_backed_modules()),
+        "main_present": (SRC_DIR / "__main__.py").is_file(),
+        "present_modules": [p.stem for p in SRC_DIR.glob("*.py")],
+        "deployed_obs": _deployed_observation(),
+        "deployed_sources": _deployed_source_files(),
+        "canary_files": [p.stem for p in SRC_DIR.glob("canary_*.py")],
+    }
+    inputs.update(_gather_meta_inputs())
+    return inputs
+
+
+def _deployed_source_files() -> list[str]:
+    """Relative paths under DEPLOYED_LINK that exist as files — the gathered
+    form of `(DEPLOYED_LINK / source).is_file()` for module sources."""
+    out: list[str] = []
+    for base, pattern in ((DEPLOYED_LINK / "src" / "rune", "*.py"),
+                          (DEPLOYED_LINK / "src" / "rust", "*/canary_*.py")):
+        if base.is_dir():
+            for p in base.glob(pattern):
+                if p.is_file():
+                    out.append(p.relative_to(DEPLOYED_LINK).as_posix())
+    return out
+
+
+def _py_build_from_inputs(inputs: dict) -> dict:
+    """Deterministic full projection from GATHERED inputs. Same inputs →
+    byte-identical doc (modulo generated_at). This is the Python core; the
+    Rust core (project.rs) must produce structurally identical output."""
+    doc = new_doc()
+    ts = inputs["now"]
+
+    # 1. subsystem structure — from the Spine store if it already owns
+    #    membership (Phase B+), else from the manual manifest (Phase A).
+    existing = inputs["existing"]
+    seeded = False
+    if existing:
+        rels = [r for r in existing["relationships"] if r["type"] == "belongs_to"]
+        if rels:
+            seeded = True
+            # CARRY EVERYTHING FORWARD — open-world requirement. Filtering
+            # by known kinds/types here would silently destroy tasks,
+            # contracts, capabilities, and any future entity class on every
+            # refresh (the exact TOO-CLOSED failure the contract forbids;
+            # observed live: task bindings vanished through build()).
+            # Module-level facts (imports, tests, maturity) are RE-DERIVED
+            # below onto the carried state; everything else passes through.
+            doc["entities"].extend(json.loads(json.dumps(existing["entities"])))
+            doc["relationships"].extend(json.loads(json.dumps(existing["relationships"])))
+            doc["observations"].extend(json.loads(json.dumps(
+                existing.get("observations", []))))
+    if not seeded:
+        mp = inputs.get("manifest_path")
+        if inputs.get("manifest") is not None and not mp:
+            # gather-supplied manifest data (the Rust-parity path): ingest
+            # the dict directly — no file to re-read
+            _ingest_umbrellas_data(doc, inputs["manifest"])
+        else:
+            # through the PUBLIC ingest_umbrellas (reads + raises like the
+            # original build; monkeypatchable for isolation tests)
+            ingest_umbrellas(doc, Path(mp) if mp else None)
+
+    # 2. module-level structural facts from actual code
+    graph = inputs["graph"]
+    registry = inputs["registry"]
+    tested = set(inputs["tested"])
+    present = set(inputs["present_modules"])
+    mods = {e["id"].split(":", 1)[1] for e in doc["entities"] if e["kind"] == "module"}
+    # T21.4 §21.4G: the ENTRY POINT is invisible to the import graph
+    # (nothing imports __main__) but is a real runtime path — seed it
+    # deterministically whenever the file exists.
+    if inputs["main_present"] and "__main__" not in mods:
+        add_entity(doc, id="module:__main__", kind="module", maturity="PRESENT",
+                   identities={"path": "src/rune/__main__.py",
+                               "role": "TUI entry point (python3 -m rune)"},
+                   evidence_refs=["entry-point:python3 -m rune"])
+        mods.add("__main__")
+    for m in sorted(mods):
+        mid = f"module:{m}"
+        e = entity(doc, mid)
+        # Re-derivation uses the HIGH-WATER path (add_entity upgrades only,
+        # never logs): fresh evidence may be lower than the store's earned
+        # state on any given pass, and that is not a demotion event — it is
+        # a build. Explicit promote() logging is for evidence-gated API calls.
+        def _derive(state: str, ev: str) -> None:
+            add_entity(doc, id=mid, kind="module", maturity=state,
+                       evidence_refs=[ev])
+
+        if m in present:
+            assert e is not None  # membership loop guarantees presence
+            e["identities"]["source"] = f"src/rune/{m}.py"
+            _derive("PRESENT", f"source:{m}.py")
+        consumers = sorted(c for c, deps in graph.items() if m in deps and c != m)
+        deps = sorted(d for d in graph.get(m, []) if d in mods and d != m)
+        for c in consumers:
+            rel = add_relationship(doc, type="consumed_by", from_id=mid,
+                                   to_id=f"module:{c}", evidence_refs=[f"ast-import:{m}"])
+            _authority_observed(doc, rel, "ast-import-projector")
+        for d in deps:
+            rel = add_relationship(doc, type="depends_on", from_id=mid,
+                                   to_id=f"module:{d}", evidence_refs=[f"ast-import:{m}"])
+            _authority_observed(doc, rel, "ast-import-projector")
+        # WIRED: importers exist, or registry wiring (canary registry)
+        if consumers or m in registry:
+            _derive("WIRED", f"ast-imports:{len(consumers)}" if consumers
+                    else "canary-registry")
+        # EXERCISED: dedicated test or canary exercise
+        if m in tested:
+            _derive("EXERCISED", f"tests/test_{m}.py")
+        elif m in registry:
+            _derive("EXERCISED", "canary-registry-exercise")
+
+    # 3. runtime/deployment observation (dynamic, bounded)
+    obs = inputs["deployed_obs"]
+    if obs:
+        _authority_observed(doc, None, "deploy-identity-projector")  # generation bump
+        deployed_sources = set(inputs["deployed_sources"])
+        dep = add_entity(doc, id="deployment:current", kind="deployment_surface",
+                         identities=obs, evidence_refs=["_build_identity.json"],
+                         maturity="LIVE_PROVEN")
+        for e in doc["entities"]:
+            if e["kind"] == "module" and e["identities"].get("source", "") in deployed_sources:
+                rel = add_relationship(doc, type="deployed_as", from_id=e["id"],
+                                       to_id="deployment:current",
+                                       evidence_refs=[f"deployed-tree:{obs['deployed_sha']}"])
+                _authority_observed(doc, rel, "deploy-identity-projector")
+        doc["observations"].append({"kind": "deployed_identity", **obs, "observed_at": ts})
+
+    # 4. meta-scaffold surface projection (H-meta): rust crates, Go
+    #    surfaces, configs, workflows — every part of rune modeled.
+    projected = project_meta_surfaces(doc, inputs)
+    if projected:
+        _authority_observed(doc, None, "meta-surface-projector")
+
+    # 4b. manifest canaries as first-class entities (H-meta): the seeded
+    #    path skips ingest, and ingest only made the EDGE — the canary
+    #    entity itself was never created, leaving obligated_canary edges
+    #    pointing at nothing (observed live: zero canary entities in the
+    #    spine before this projector).
+    manifest = inputs.get("config_manifest")
+    if manifest:
+        canary_files = set(inputs["canary_files"])
+        for name, u in manifest.get("umbrellas", {}).items():
+            for canary in u.get("canaries", []):
+                mid = f"module:{canary}"
+                add_entity(doc, id=mid, kind="module", tags=["code", "canary"],
+                           identities={"source": f"src/rune/{canary}.py"},
+                           evidence_refs=[f"umbrella-manifest#{name}"],
+                           maturity="PRESENT" if canary in canary_files else "DECLARED")
+                add_relationship(doc, type="obligated_canary",
+                                 from_id=f"subsystem:{name}", to_id=mid,
+                                 evidence_refs=[f"umbrella-manifest#{name}"])
+
+
+    # reconcile: facts owned by projectors that no longer observe them
+    # become STALE (marked, never deleted — history survives; open-world
+    # preservation applies to everything, staleness is the truth marker)
+    staled = reconcile_authorities(doc)
+    for s in staled:
+        doc["observations"].append({"kind": "fact_staled", **s, "observed_at": ts})
+
+    # exact-duplicate observation suppression (carry-forward + this pass
+    # both record deployed_identity etc.); distinct repeats are history
+    seen_obs = set()
+    unique_obs = []
+    for o in doc["observations"]:
+        key = json.dumps(_sorted(o), sort_keys=True)
+        if key not in seen_obs:
+            seen_obs.add(key)
+            unique_obs.append(o)
+    doc["observations"] = unique_obs
+    doc["generated_at"] = ts
+    return doc
+
+
+def _ingest_umbrellas_data(doc: dict, data: dict) -> int:
+    """The original ingest_umbrellas with the file read lifted out (H3-spine
+    gather boundary). Raises ValueError on a Spine-generated view, exactly
+    like the file-driven original."""
+    if GENERATED_VIEW_MARKER in data:
+        raise ValueError(
+            "the manifest is a Spine-generated compatibility view; refusing to "
+            "ingest it (Phase A reads the manual authority exactly once). "
+            "Structural membership now lives in the Spine store.")
     count = 0
     KNOWN_FIELDS = {"description", "modules", "depends_on", "mirrors", "canaries"}
     for name, u in data.get("umbrellas", {}).items():
@@ -219,125 +593,57 @@ def ingest_umbrellas(doc: dict, manifest_path: Path | None = None) -> int:
 
 def build(manifest_path: Path | None = None) -> dict:
     """Deterministic full projection from authorities. Same inputs →
-    byte-identical doc (modulo generated_at)."""
-    doc = new_doc()
-
-    # 1. subsystem structure — from the Spine store if it already owns
-    #    membership (Phase B+), else from the manual manifest (Phase A).
-    existing = load()
-    seeded = False
-    if existing:
-        rels = [r for r in existing["relationships"] if r["type"] == "belongs_to"]
-        if rels:
-            seeded = True
-            # CARRY EVERYTHING FORWARD — open-world requirement. Filtering
-            # by known kinds/types here would silently destroy tasks,
-            # contracts, capabilities, and any future entity class on every
-            # refresh (the exact TOO-CLOSED failure the contract forbids;
-            # observed live: task bindings vanished through build()).
-            # Module-level facts (imports, tests, maturity) are RE-DERIVED
-            # below onto the carried state; everything else passes through.
-            doc["entities"].extend(json.loads(json.dumps(existing["entities"])))
-            doc["relationships"].extend(json.loads(json.dumps(existing["relationships"])))
-            doc["observations"].extend(json.loads(json.dumps(
-                existing.get("observations", []))))
-    if not seeded:
-        ingest_umbrellas(doc, manifest_path)
-
-    # 2. module-level structural facts from actual code
-    graph = _import_graph()
-    registry = _canary_registry()
-    tested = _test_backed_modules()
-    mods = {e["id"].split(":", 1)[1] for e in doc["entities"] if e["kind"] == "module"}
-    # T21.4 §21.4G: the ENTRY POINT is invisible to the import graph
-    # (nothing imports __main__) but is a real runtime path — seed it
-    # deterministically whenever the file exists.
-    if (SRC_DIR / "__main__.py").is_file() and "__main__" not in mods:
-        add_entity(doc, id="module:__main__", kind="module", maturity="PRESENT",
-                   identities={"path": "src/rune/__main__.py",
-                               "role": "TUI entry point (python3 -m rune)"},
-                   evidence_refs=["entry-point:python3 -m rune"])
-        mods.add("__main__")
-    for m in sorted(mods):
-        mid = f"module:{m}"
-        e = entity(doc, mid)
-        # Re-derivation uses the HIGH-WATER path (add_entity upgrades only,
-        # never logs): fresh evidence may be lower than the store's earned
-        # state on any given pass, and that is not a demotion event — it is
-        # a build. Explicit promote() logging is for evidence-gated API calls.
-        def _derive(state: str, ev: str) -> None:
-            add_entity(doc, id=mid, kind="module", maturity=state,
-                       evidence_refs=[ev])
-
-        if (SRC_DIR / f"{m}.py").is_file():
-            assert e is not None  # membership loop guarantees presence
-            e["identities"]["source"] = f"src/rune/{m}.py"
-            _derive("PRESENT", f"source:{m}.py")
-        consumers = sorted(c for c, deps in graph.items() if m in deps and c != m)
-        deps = sorted(d for d in graph.get(m, set()) if d in mods and d != m)
-        for c in consumers:
-            rel = add_relationship(doc, type="consumed_by", from_id=mid,
-                                   to_id=f"module:{c}", evidence_refs=[f"ast-import:{m}"])
-            _authority_observed(doc, rel, "ast-import-projector")
-        for d in deps:
-            rel = add_relationship(doc, type="depends_on", from_id=mid,
-                                   to_id=f"module:{d}", evidence_refs=[f"ast-import:{m}"])
-            _authority_observed(doc, rel, "ast-import-projector")
-        # WIRED: importers exist, or registry wiring (canary registry)
-        if consumers or m in registry:
-            _derive("WIRED", f"ast-imports:{len(consumers)}" if consumers
-                    else "canary-registry")
-        # EXERCISED: dedicated test or canary exercise
-        if m in tested:
-            _derive("EXERCISED", f"tests/test_{m}.py")
-        elif m in registry:
-            _derive("EXERCISED", "canary-registry-exercise")
-
-    # 3. runtime/deployment observation (dynamic, bounded)
-    obs = _deployed_observation()
-    if obs:
-        _authority_observed(doc, None, "deploy-identity-projector")  # generation bump
-        dep = add_entity(doc, id="deployment:current", kind="deployment_surface",
-                         identities=obs, evidence_refs=["_build_identity.json"],
-                         maturity="LIVE_PROVEN")
-        for e in doc["entities"]:
-            if e["kind"] == "module" and (DEPLOYED_LINK / e["identities"].get("source", "")).is_file():
-                rel = add_relationship(doc, type="deployed_as", from_id=e["id"],
-                                       to_id="deployment:current",
-                                       evidence_refs=[f"deployed-tree:{obs['deployed_sha']}"])
-                _authority_observed(doc, rel, "deploy-identity-projector")
-        doc["observations"].append({"kind": "deployed_identity", **obs, "observed_at": now()})
-
-    # reconcile: facts owned by projectors that no longer observe them
-    # become STALE (marked, never deleted — history survives; open-world
-    # preservation applies to everything, staleness is the truth marker)
-    staled = reconcile_authorities(doc)
-    for s in staled:
-        doc["observations"].append({"kind": "fact_staled", **s, "observed_at": now()})
-
-    # exact-duplicate observation suppression (carry-forward + this pass
-    # both record deployed_identity etc.); distinct repeats are history
-    seen_obs = set()
-    unique_obs = []
-    for o in doc["observations"]:
-        key = json.dumps(_sorted(o), sort_keys=True)
-        if key not in seen_obs:
-            seen_obs.add(key)
-            unique_obs.append(o)
-    doc["observations"] = unique_obs
-    doc["generated_at"] = now()
+    byte-identical doc (modulo generated_at). H3-spine: gathers the scans
+    once, then delegates to the Rust core when built (Python fallback —
+    strangler law: the old path stays load-bearing until deletion is proven)."""
+    inputs = _gather_build_inputs(manifest_path)
+    core = _rust_core()
+    # The unseeded path is the one-time Phase A migration: it stays on the
+    # Python core so the public ingest_umbrellas seam (monkeypatched by
+    # isolation tests) is honored byte-for-byte. Steady-state (seeded)
+    # builds delegate to the Rust core; the parity battery covers BOTH
+    # paths, including an explicit unseeded-ingest parity section.
+    seeded = bool(inputs["existing"]) and any(
+        r["type"] == "belongs_to" for r in inputs["existing"]["relationships"])
+    doc = (core.project(inputs) if core is not None and seeded
+           else _py_build_from_inputs(inputs))
+    # both cores funnel through the same post-projection passes (the
+    # contract-discovery write-back + language placement) — the doc-level
+    # transforms live in Python until the #2464 top-up ports them
+    _apply_contract_discoveries(doc)
+    _place_languages(doc)
     return doc
 
 
 # ── drift ─────────────────────────────────────────────────────────────────
 
-def drift(doc: dict) -> list[dict]:
-    """Architectural drift classes. Reuses authorities' verdicts; never
-    duplicates their logic. Deterministic output."""
+def _gather_drift_inputs() -> dict:
+    """Every I/O read drift() needs (zero-dep split law — same gathered dict
+    feeds the Rust core and the Python fallback)."""
+    try:
+        src_version = (ROOT / "pyproject.toml").read_text()
+        import re
+        m = re.search(r'^version\s*=\s*"([^"]+)"', src_version, re.M)
+        src_version = m.group(1) if m else ""
+    except OSError:
+        src_version = ""
+    return {
+        "registry": _canary_registry(),
+        "graph": {m: sorted(deps) for m, deps in _import_graph().items()},
+        "tested": sorted(_test_backed_modules()),
+        "src_stems": [p.stem for p in SRC_DIR.glob("*.py")],
+        "deployed_obs": _deployed_observation(),
+        "src_version": src_version,
+    }
+
+
+def _py_drift_from_inputs(doc: dict, inputs: dict) -> list[dict]:
+    """Architectural drift classes from GATHERED inputs. Python core; the
+    Rust core (drift.rs) must produce identical output on the same inputs."""
     out = []
-    graph = _import_graph()
-    registry = _canary_registry()
-    tested = _test_backed_modules()
+    graph = inputs["graph"]
+    registry = inputs["registry"]
+    tested = set(inputs["tested"])
     mods = {e["id"].split(":", 1)[1] for e in doc["entities"] if e["kind"] == "module"}
 
     # 1. registered but absent (canary registry names a non-existent module)
@@ -349,11 +655,11 @@ def drift(doc: dict) -> list[dict]:
     # 2. present but unowned (runtime source file outside every subsystem).
     #    Excludes canary files (governed by the canary contract, not umbrella
     #    membership) and package plumbing (__init__/__main__).
-    for p in SRC_DIR.glob("*.py"):
-        if p.stem.startswith(("canary_", "__")):
+    for stem in inputs["src_stems"]:
+        if stem.startswith(("canary_", "__")):
             continue
-        if p.stem not in mods:
-            out.append({"class": "present_but_unowned", "entity": f"module:{p.stem}",
+        if stem not in mods:
+            out.append({"class": "present_but_unowned", "entity": f"module:{stem}",
                         "detail": "src/rune runtime module with no subsystem membership"})
 
     # 3. registered but no static importers — OBSERVATION, not a death
@@ -368,14 +674,8 @@ def drift(doc: dict) -> list[dict]:
                         "detail": f"zero static importers; dynamic wiring possible; {dyn}"})
 
     # 4. deployed identity drift (source version vs deployment authority)
-    obs = _deployed_observation()
-    try:
-        src_version = (ROOT / "pyproject.toml").read_text()
-        import re
-        m = re.search(r'^version\s*=\s*"([^"]+)"', src_version, re.M)
-        src_version = m.group(1) if m else ""
-    except OSError:
-        src_version = ""
+    obs = inputs["deployed_obs"]
+    src_version = inputs["src_version"]
     if obs and src_version and obs["deployed_version"] != src_version:
         out.append({"class": "version_surfaces_disagree",
                     "detail": f"source {src_version} != deployed {obs['deployed_version']}"})
@@ -405,6 +705,17 @@ def drift(doc: dict) -> list[dict]:
     return out
 
 
+def drift(doc: dict) -> list[dict]:
+    """Architectural drift classes. Reuses authorities' verdicts; never
+    duplicates their logic. Deterministic output. H3-spine: gathers the
+    scans once, delegates to the Rust core when built (Python fallback)."""
+    inputs = _gather_drift_inputs()
+    core = _rust_core()
+    if core is not None:
+        return core.drift(doc, inputs)
+    return _py_drift_from_inputs(doc, inputs)
+
+
 # ── snapshots / deltas ────────────────────────────────────────────────────
 
 def snapshot(doc: dict, label: str = "") -> Path:
@@ -421,9 +732,9 @@ def snapshot(doc: dict, label: str = "") -> Path:
 
 # ── compatibility projection (Phase C) ────────────────────────────────────
 
-def export_umbrellas(doc: dict) -> dict:
-    """Generate the legacy umbrella view FROM Spine. Output only — the old
-    consumers (CI gate, henxels) read this during migration. Never ingest."""
+def _py_export_umbrellas(doc: dict) -> dict:
+    """Python core of export_umbrellas (H3-spine: the Rust core in query.rs
+    must produce identical output modulo generated_at)."""
     umbrellas: dict = {}
     for e in doc["entities"]:
         if e["kind"] != "subsystem":
@@ -464,6 +775,16 @@ def export_umbrellas(doc: dict) -> dict:
             "umbrellas": dict(sorted(umbrellas.items()))}
 
 
+def export_umbrellas(doc: dict) -> dict:
+    """Generate the legacy umbrella view FROM Spine. Output only — the old
+    consumers (CI gate, henxels) read this during migration. Never ingest.
+    H3-spine: delegates to the Rust core when built (Python fallback)."""
+    core = _rust_core()
+    if core is not None:
+        return core.export_umbrellas(doc, now())
+    return _py_export_umbrellas(doc)
+
+
 # ── contracts, task binding, impact frontier (T22 + graph addenda) ────────
 #
 # GRAPH SEPARATION: Spine is its own LOGICAL graph — current structural
@@ -503,7 +824,16 @@ FRONTIER_LEVEL2_TYPES = {"verified_by", "obligated_canary"}
 
 def query(doc: dict, entity_id: str) -> dict:
     """INTRINSIC SELF-KNOWLEDGE: one deterministic call answering the
-    representative structural question set. No LLM, no Memory, no rediscovery."""
+    representative structural question set. No LLM, no Memory, no rediscovery.
+    H3-spine: delegates to the Rust core when built (Python fallback)."""
+    core = _rust_core()
+    if core is not None:
+        return core.query(doc, entity_id)
+    return _py_query(doc, entity_id)
+
+
+def _py_query(doc: dict, entity_id: str) -> dict:
+    """Python core of query (parity oracle for the Rust core)."""
     e = entity(doc, entity_id)
     if e is None:
         return {"error": "not found", "id": entity_id}

src/rune/spine_language.py

@@ -0,0 +1,218 @@
+"""spine_language.py — the #2465 doc-level transforms (carved from spine.py
+to honor the giant-file henxel: keep it under 1200 lines).
+
+Three transforms, applied to BOTH cores' output at build time:
+  1. language placement — every entity gets a language verdict (kind
+     defaults; subsystems derive from member-majority over the measured
+     classification map);
+  2. discovery-ID normalization — migrate legacy unqualified contract
+     discoveries to construction-surface kind without losing evidence;
+  3. contract-discovery write-back — closed contracts teach the spine
+     what construction actually built (observed → PRESENT, candidate →
+     DECLARED; the CANDIDATE law holds).
+
+Same dependency laws as spine.py: structural_store primitives only, no
+I/O beyond the classification/scaffold store reads, deterministic.
+"""
+from __future__ import annotations
+
+import json
+from pathlib import Path
+
+from rune.structural_store import (
+    add_entity, add_relationship, entity, new_doc, relationships, _sorted, now,
+)
+
+ROOT = Path(__file__).resolve().parents[2]
+SRC_DIR = ROOT / "src" / "rune"
+
+def _classification_sides() -> dict:
+    """The measured dichotomy map (W0): module stem → RUST|GO|TUI-LAST|...
+    Loaded once per _place_languages call, best-effort — a missing or
+    unreadable classification.json degrades to {}/unassessed verdicts,
+    never to invented facts."""
+    try:
+        data = json.loads((ROOT / "store" / "rebase" / "classification.json").read_text())
+        return {name: rec.get("side", "") for name, rec in data.items() if isinstance(rec, dict)}
+    except (OSError, json.JSONDecodeError, AttributeError):
+        return {}
+
+
+def _place_languages(doc: dict) -> int:
+    """Stamp a language verdict per entity (no-op for entities that carry
+    one). Deterministic: substring classification over the entity id + the
+    kind; the exact same rule construction_decision.language_placement
+    implements (kept inline here to avoid a per-entity FFI crossing for
+    the spine's own 218 entities; the FFI path is used in contracts)."""
+    GO_HINTS = ("server", "transport", "dispatch", "entry", "bridge",
+                "hook_engine", "provider", "watch", "notif", "voice",
+                "gitea", "event_", "message_", "tool_exec", "work_manager")
+    RUST_HINTS = ("memory", "drift", "warm", "capab", "token", "spine",
+                  "scaffold", "construct", "structural", "curator",
+                  "consolidat", "elastic", "cognit", "abstract", "contract",
+                  "ledger", "audit", "claim", "evidence", "behavio",
+                  "verif", "pins", "witness", "anchor", "growth", "goal",
+                  "salience", "store", "tui_", "rune_tui")
+    placed = 0
+    CLASSIFICATION_SIDES = _classification_sides()
+    for e in doc.get("entities", []):
+        eid = e.get("id", "")
+        kind = e.get("kind", "")
+        # AUTHORITY ORDER (Nick's dichotomy, 2026-10-06 correction): the
+        # MEASURED classification map (import-evidence per module) decides
+        # FIRST. The name-hint lists are only a fallback for entities with
+        # no measurement — never allowed to override the evidence. A module
+        # with neither measurement nor hint is "unclassified", not a silent
+        # rust default.
+        measured = str(CLASSIFICATION_SIDES.get(
+            eid.split(":", 1)[1] if ":" in eid else eid, "") or "").upper()
+        if eid.startswith("contract:"):
+            lang = "n/a"
+        elif kind == "rust-crate":
+            lang = "rust"
+        elif kind == "go-surface":
+            lang = "go"
+        elif kind == "workflow" or kind == "config":
+            lang = "n/a"
+        elif kind == "deployment_surface":
+            lang = "go"
+        elif measured == "RUST":
+            lang = "rust"
+        elif measured == "GO":
+            lang = "go"
+        elif measured == "TUI-LAST":
+            lang = "python-tui (Wave 6)"
+        elif measured == "TEST-INFRA" or measured == "RETIRES":
+            lang = "test-infra" if measured == "TEST-INFRA" else "retires"
+        elif "tui" in eid:
+            lang = "python-tui (Wave 6)"
+        elif any(h in eid for h in GO_HINTS):
+            lang = "go (name hint)"
+        elif any(h in eid for h in RUST_HINTS):
+            lang = "rust (name hint)"
+        elif kind == "module":
+            lang = "unclassified"
+        elif kind == "subsystem":
+            # A subsystem is a CONTAINER — its language is its members'
+            # majority side per the measured dichotomy. The evidence map is
+            # classification.json (measured, 174 modules; honest note: newer
+            # files may be unclassified, so the count of classified members
+            # rides the verdict). Members arrive as belongs_to relationships
+            # whose from-ids carry module:<name> — map through classification.
+            members = [
+                r.get("from", "").split(":", 1)[1]
+                for r in doc.get("relationships", [])
+                if r.get("type") == "belongs_to" and r.get("to") == eid
+                and r.get("from", "").startswith("module:")
+            ]
+            sides = [
+                str(CLASSIFICATION_SIDES.get(m) or "").upper()
+                for m in members
+            ]
+            rust = sides.count("RUST")
+            go = sides.count("GO")
+            if rust and go:
+                lang = f"mixed (rust {rust} / go {go} members)"
+            elif rust:
+                lang = "rust"
+            elif go:
+                lang = "go"
+            else:
+                lang = "unassessed"
+        else:
+            lang = "unassessed"
+        e.setdefault("identities", {})["language"] = lang
+        if lang != "unassessed":
+            placed += 1
+    return placed
+
+
+def _normalize_discovery_ids(doc: dict) -> int:
+    """Migrate the old unqualified contract references, preserving evidence.
+
+    A file path (or 'suite') is not a module ID. Only migrate the malformed
+    module records produced by the earlier discovery projector; leave all
+    other open-world entity classes alone.
+    """
+    renamed = {}
+    observed = {
+        eid for _, entities in _contract_discoveries()
+        for eid, _, provenance in entities if provenance == "observed"
+    }
+    for e in doc.get("entities", []):
+        if (e.get("kind") == "module" and ":" not in e.get("id", "")
+                and any(ref.startswith("contract-discovery:")
+                        for ref in e.get("evidence_refs", []))):
+            old = e["id"]
+            e["id"] = f"construction-surface:{old}"
+            e["kind"] = "construction-surface"
+            e.setdefault("identities", {})["source_ref"] = old
+            renamed[old] = e["id"]
+        if e.get("kind") == "construction-surface" and e.get("id", "").startswith("construction-surface:"):
+            # Earlier code promoted every *candidate* to PRESENT. Undo only
+            # that unsupported claim; an actually observed surface retains it.
+            if e["id"].split(":", 1)[1] not in observed:
+                e["maturity"] = "DECLARED"
+            e["tags"] = [tag for tag in e.get("tags", []) if tag != "code"]
+    for rel in doc.get("relationships", []):
+        for endpoint in ("from", "to"):
+            if rel.get(endpoint) in renamed:
+                rel[endpoint] = renamed[rel[endpoint]]
+    return len(renamed)
+
+
+def _apply_contract_discoveries(doc: dict) -> int:
+    """Contract-discovery write-back (issue #2465 addition 2): entities
+    DISCOVERED by closed contracts become modeled spine entities — the
+    spine learns what construction actually built. Doc-level transform,
+    applied to BOTH cores' output. The CANDIDATE law holds: only CLOSED
+    contracts write back."""
+    placed = 0
+    for cid, entities in _contract_discoveries():
+        for eid, kind, provenance in entities:
+            before = len(doc.get("entities", []))
+            if kind == "construction-surface":
+                eid = f"construction-surface:{eid}"
+            add_entity(doc, id=eid, kind=kind,
+                       tags=["contract-discovery"],
+                       identities={"source_ref": eid.split(":", 1)[1]} if kind == "construction-surface" else None,
+                       evidence_refs=[f"contract-discovery:{cid}"],
+                       maturity="PRESENT" if provenance == "observed" else "DECLARED")
+            if len(doc.get("entities", [])) > before:
+                placed += 1
+            else:
+                placed += 0  # high-water merge — no new entity, still evidence
+    return placed
+
+
+def _contract_discoveries():
+    """Closed contracts' DISCOVERED entities (issue #2465 addition 2):
+    expected_new_observed + candidate corrections, gathered from the
+    scaffold store. Returns [(contract_id, [(entity_id, kind), ...])]."""
+    try:
+        doc = json.loads((ROOT / "store" / "scaffold" / "current.json").read_text())
+    except (OSError, json.JSONDecodeError):
+        return []
+    out = []
+    for e in doc.get("entities", []):
+        cid = e.get("id", "")
+        if not cid.startswith("contract:") or e.get("phase") != "closed":
+            continue
+        q = e.get("ext", {}).get("contract_quality", {})
+        found = []
+        # expected-new surfaces observed at close (REAL delivered entities)
+        for eid in q.get("expected_new_observed", []):
+            kind = eid.split(":", 1)[0] if ":" in eid else "construction-surface"
+            if kind in ("rust-crate", "go-surface", "config", "workflow", "module"):
+                found.append((eid, kind, "observed"))
+            elif kind == "construction-surface":
+                found.append((eid, kind, "observed"))
+        # candidate corrections: the closure flagged them for modeling
+        for cand in q.get("candidate_corrections", []):
+            eid = cand.get("entity", "")
+            kind = eid.split(":", 1)[0] if ":" in eid else "construction-surface"
+            if eid and kind in ("rust-crate", "go-surface", "config", "workflow", "module", "construction-surface"):
+                found.append((eid, kind, "candidate"))
+        if found:
+            out.append((cid[9:], found))
+    return out

src/rune/spine_loader.py

@@ -0,0 +1,105 @@
+#!/usr/bin/env python3
+"""ctypes loader for the Rust rune_spine core (H3-spine strangler, T4.8).
+
+Contract BUILDER-2026-10-04T07:19:36Z-cli. Gives spine.py the Rust projection
+machinery through the cdylib with no subprocess. I/O (filesystem scans, JSON
+file reads) stays in spine.py per the zero-dep split law; this loader receives
+fully-gathered input dicts and returns pure results.
+
+FFI contract (doc-envelope law — every call returns {"ok", "value"|"err"}):
+  * sp_project(inputs_json) -> doc
+  * sp_drift({doc, inputs})   -> drift list
+  * sp_query({doc, id})       -> query result
+  * sp_export({doc, now})     -> umbrella compatibility view
+  * sp_free_string(ptr)
+
+FFI segfault law: every symbol gets explicit argtypes + restype (c_void_p for
+returned char* — the default c_int truncates 64-bit pointers, exit-139 class).
+
+Zero dependencies. The .so resolves against this repo's crate target dir;
+override with SP_RUST_LIB (a FILE path — binaries resolve next to it).
+"""
+
+from __future__ import annotations
+
+import ctypes
+import json
+import os
+from pathlib import Path
+
+_REPO = Path(__file__).resolve().parents[2]
+_CRATE_DIR = _REPO / "src" / "rust" / "rune_spine"
+_LIB_PATH = Path(
+    os.environ.get(
+        "SP_RUST_LIB", _CRATE_DIR / "target" / "release" / "librune_spine.so"
+    )
+)
+
+_lib = None
+
+
+class SpineCoreUnavailable(FileNotFoundError):
+    """The Rust core is not built (or SP_RUST_LIB points nowhere). Callers
+    fall back to the Python implementation — strangler law: old code is
+    deleted only when the new one is proven, so the fallback is load-bearing."""
+
+
+def available() -> bool:
+    return _LIB_PATH.is_file()
+
+
+def _load() -> ctypes.CDLL:
+    global _lib
+    if _lib is not None:
+        return _lib
+    if not _LIB_PATH.exists():
+        raise SpineCoreUnavailable(
+            f"Rust spine core not built: {_LIB_PATH} missing — run "
+            f"`cargo build --release` in {_CRATE_DIR}"
+        )
+    lib = ctypes.CDLL(str(_LIB_PATH))
+    lib.sp_free_string.argtypes = [ctypes.c_void_p]
+    lib.sp_free_string.restype = None
+    for sym in ("sp_project", "sp_drift", "sp_query", "sp_export"):
+        fn = getattr(lib, sym)
+        fn.argtypes = [ctypes.c_char_p]
+        fn.restype = ctypes.c_void_p  # char* — never default c_int
+    _lib = lib
+    return lib
+
+
+def _call(sym: str, payload: dict):
+    lib = _load()
+    fn = getattr(lib, sym)
+    raw = json.dumps(payload).encode("utf-8")
+    ptr = fn(raw)
+    if not ptr:
+        raise RuntimeError(f"{sym} returned a null pointer")
+    try:
+        text = ctypes.cast(ptr, ctypes.c_char_p).value.decode("utf-8")
+    finally:
+        lib.sp_free_string(ptr)
+    env = json.loads(text)
+    if not env.get("ok"):
+        raise RuntimeError(f"{sym} core error: {env.get('err')}")
+    return env["value"]
+
+
+def project(inputs: dict) -> dict:
+    """Full spine projection from gathered inputs (spine.build's core)."""
+    return _call("sp_project", inputs)
+
+
+def drift(doc: dict, inputs: dict) -> list:
+    """Drift classification from a doc + gathered drift inputs."""
+    return _call("sp_drift", {"doc": doc, "inputs": inputs})
+
+
+def query(doc: dict, entity_id: str) -> dict:
+    """Intrinsic self-knowledge query against a doc."""
+    return _call("sp_query", {"doc": doc, "id": entity_id})
+
+
+def export_umbrellas(doc: dict, now: str) -> dict:
+    """Legacy umbrella compatibility view (output-only)."""
+    return _call("sp_export", {"doc": doc, "now": now})

src/rune/tc_loader.py

@@ -0,0 +1,88 @@
+#!/usr/bin/env python3
+"""ctypes loader for the Rust token_counting core (H3 slice 5, T4.4).
+
+Contract BUILDER-2026-10-04T09:57:23Z-cli. Gives token_optimizer the Rust
+counting/compression helpers through the cdylib with no subprocess.
+
+FFI contract (doc-envelope law — every call returns {"ok", "value"|"err"}):
+  * tc_estimate_tokens({text}) -> int
+  * tc_compress_context({text}) -> string
+  * tc_free_string(ptr)
+
+FFI segfault law: every symbol gets explicit argtypes + restype (c_void_p
+for returned char*). Zero dependencies; override the .so with TC_RUST_LIB
+(a FILE path).
+"""
+
+from __future__ import annotations
+
+import ctypes
+import json
+import os
+from pathlib import Path
+
+_REPO = Path(__file__).resolve().parents[2]
+_CRATE_DIR = _REPO / "src" / "rust" / "token_counting"
+_LIB_PATH = Path(
+    os.environ.get(
+        "TC_RUST_LIB", _CRATE_DIR / "target" / "release" / "libtoken_counting.so"
+    )
+)
+
+_lib = None
+
+
+class TokenCountingUnavailable(FileNotFoundError):
+    """The Rust core is not built (or TC_RUST_LIB points nowhere). Callers
+    fall back to the Python implementation — strangler law."""
+
+
+def available() -> bool:
+    return _LIB_PATH.is_file()
+
+
+def _load() -> ctypes.CDLL:
+    global _lib
+    if _lib is not None:
+        return _lib
+    if not _LIB_PATH.exists():
+        raise TokenCountingUnavailable(
+            f"Rust token_counting core not built: {_LIB_PATH} missing — run "
+            f"`cargo build --release` in {_CRATE_DIR}"
+        )
+    lib = ctypes.CDLL(str(_LIB_PATH))
+    lib.tc_free_string.argtypes = [ctypes.c_void_p]
+    lib.tc_free_string.restype = None
+    for sym in ("tc_estimate_tokens", "tc_compress_context"):
+        fn = getattr(lib, sym)
+        fn.argtypes = [ctypes.c_char_p]
+        fn.restype = ctypes.c_void_p  # char* — never default c_int
+    _lib = lib
+    return lib
+
+
+def _call(sym: str, payload: dict):
+    lib = _load()
+    fn = getattr(lib, sym)
+    raw = json.dumps(payload).encode("utf-8")
+    ptr = fn(raw)
+    if not ptr:
+        raise RuntimeError(f"{sym} returned a null pointer")
+    try:
+        text = ctypes.cast(ptr, ctypes.c_char_p).value.decode("utf-8")
+    finally:
+        lib.tc_free_string(ptr)
+    env = json.loads(text)
+    if not env.get("ok"):
+        raise RuntimeError(f"{sym} core error: {env.get('err')}")
+    return env["value"]
+
+
+def estimate_tokens(text: str) -> int:
+    """1 token ≈ 4 chars (code points), floor division."""
+    return int(_call("tc_estimate_tokens", {"text": text}))
+
+
+def compress_context(text: str) -> str:
+    """Newline/space run collapse + prefix shortening + strip."""
+    return _call("tc_compress_context", {"text": text})

src/rune/tier_manager.py

@@ -20,6 +20,33 @@ HOT_THRESHOLD = 7  # accessed within 7 days = hot
 WARM_THRESHOLD = 30  # accessed within 30 days = warm
 # > 30 days = cold
 
+
+def _core():
+    """The Rust cognition_core when available (strangler: Python fallback is
+    load-bearing). RUNE_COGNITION_CORE=python pins the fallback."""
+    return None if cc_loader_pin() else _cc_probe()
+
+
+def _cc_probe():
+    from rune import cc_loader as _cl
+    try:
+        return _cl if _cl.available() else None
+    except Exception:  # noqa: BLE001, S110 — loader probe never crashes the fallback
+        return None
+
+
+def cc_loader_pin() -> bool:
+    """The env pin: RUNE_COGNITION_CORE=python → kernels OFF (shared probe).
+"""
+    import os
+
+    return os.environ.get("RUNE_COGNITION_CORE", "auto") == "python"
+
+
+def _py_core_now() -> str:
+    """The injected clock (iso Z) — module-level for the kernel boundary."""
+    return datetime.now(timezone.utc).strftime("%Y-%m-%dT%H:%M:%SZ")
+
 # Tier storage characteristics
 TIER_CONFIG = {
     "hot": {
@@ -56,7 +83,24 @@ class TierManager:
         """Determine the tier for an entry based on its access patterns.
 
         Returns 'hot', 'warm', or 'cold'.
+        Delegates to the Rust kernel when built; the Python body below is
+        the parity oracle (W3.4: identical thresholds injected, naive
+        timestamps refuse per the PARITY TRAP law).
         """
+        core = _core()
+        if core is not None:
+            try:
+                from rune import cc_loader as _cl
+
+                raw = _cl.tier_get(entry, _py_core_now(),
+                                   float(HOT_THRESHOLD), float(WARM_THRESHOLD))
+                return str(raw)
+            except Exception:  # noqa: BLE001, S110 — kernel failure → oracle, never a broken call
+                pass
+        return self._py_get_tier(entry)
+
+    def _py_get_tier(self, entry: dict) -> str:
+        """Python parity oracle (W3.4)."""
         wash_count = entry.get("wash_count", 0) or 0
         last_accessed = entry.get("last_accessed")
         rock_status = entry.get("rock_status", "washable")
@@ -88,7 +132,26 @@ class TierManager:
         return "warm"
 
     def promote(self, entry: dict) -> str:
-        """Promote an entry to a higher tier. Returns new tier."""
+        """Promote an entry to a higher tier. Returns new tier.
+        Delegates to the Rust kernel when built (Python oracle below)."""
+        core = _core()
+        if core is not None:
+            try:
+                from rune import cc_loader as _cl
+
+                # The kernel's promote/demote take the FULL ENTRY (plus
+                # thresholds + clock) — not a tier string. They recompute
+                # the current tier internally, so a tier-string call was
+                # silently landing on defaults (the live probe caught it).
+                raw = _cl.tier_promote(entry, _py_core_now(),
+                                       float(HOT_THRESHOLD), float(WARM_THRESHOLD))
+                return str(raw)
+            except Exception:  # noqa: BLE001, S110 — kernel failure → oracle fallback, intentional silence
+                pass
+        return self._py_promote(entry)
+
+    def _py_promote(self, entry: dict) -> str:
+        """Python parity oracle."""
         current = self.get_tier(entry)
         if current == "cold":
             return "warm"
@@ -97,7 +160,24 @@ class TierManager:
         return "hot"  # already hot
 
     def demote(self, entry: dict) -> str:
-        """Demote an entry to a lower tier. Returns new tier."""
+        """Demote an entry to a lower tier. Returns new tier.
+        Delegates to the Rust kernel when built (Python oracle below)."""
+        core = _core()
+        if core is not None:
+            try:
+                from rune import cc_loader as _cl
+
+                # Same full-entry contract as promote; the kernel handles
+                # rock_status internally (rock never demotes).
+                raw = _cl.tier_demote(entry, _py_core_now(),
+                                      float(HOT_THRESHOLD), float(WARM_THRESHOLD))
+                return str(raw)
+            except Exception:  # noqa: BLE001, S110 — kernel failure → oracle fallback, intentional silence
+                pass
+        return self._py_demote(entry)
+
+    def _py_demote(self, entry: dict) -> str:
+        """Python parity oracle."""
         current = self.get_tier(entry)
         rock_status = entry.get("rock_status", "washable")
 

src/rune/token_optimizer.py

@@ -44,8 +44,13 @@ class CacheEntry:
     hit_count: int = 0
 
     def to_dict(self):
+        # `content` is required by CacheEntry; omitting it here made the
+        # persisted JSON unloadable (CacheEntry(**entry_data) raised on
+        # _load), which the blanket except in _load turned into silent
+        # total cache loss on every restart. See issue #770.
         return {
             "key": self.key,
+            "content": self.content,
             "tokens": self.tokens,
             "last_used": self.last_used,
             "use_count": self.use_count,
@@ -116,8 +121,13 @@ class TokenOptimizer:
             self._save()
 
     def estimate_tokens(self, text: str) -> int:
-        """Estimate token count (rough: 1 token ≈ 4 chars)."""
-        return len(text) // 4
+        """Estimate token count (rough: 1 token ≈ 4 chars).
+
+        H3 slice 5: delegates to the Rust core when built (Python fallback)."""
+        core = _tc_core()
+        if core is not None:
+            return core.estimate_tokens(text)
+        return _py_estimate_tokens(text)
 
     def _load_persona_definition(self) -> str:
         """Load persona definition from persona_definition module, with fallback."""
@@ -195,19 +205,14 @@ class TokenOptimizer:
         return compressed
 
     def _compress_context(self, context: str) -> str:
-        """Compress context to reduce tokens."""
-        # Remove multiple newlines
-        compressed = re.sub(r"\n{3,}", "\n\n", context)
+        """Compress context to reduce tokens.
 
-        # Remove redundant spaces
-        compressed = re.sub(r" {2,}", " ", compressed)
+        H3 slice 5: delegates to the Rust core when built (Python fallback)."""
+        core = _tc_core()
+        if core is not None:
+            return core.compress_context(context)
+        return _py_compress_context(context)
 
-        # Shorten common patterns
-        compressed = compressed.replace("User:", "U:")
-        compressed = compressed.replace("Assistant:", "A:")
-        compressed = compressed.replace("System:", "S:")
-
-        return compressed.strip()
 
     def optimize_prompt(self, text: str, context: str = "") -> Dict[str, Any]:
         """Optimize a prompt by caching and compressing."""
@@ -295,6 +300,46 @@ def get_optimizer() -> TokenOptimizer:
     return _optimizer
 
 
+# ── pure helpers (H3 slice 5: Rust core when built; _py_ variants are the
+#    load-bearing fallback AND the parity oracle).
+
+def _tc_core():
+    """The Rust token_counting core when available (strangler law).
+    RUNE_TOKEN_CORE=python pins the fallback."""
+    if os.environ.get("RUNE_TOKEN_CORE", "auto") == "python":
+        return None
+    try:
+        from rune import tc_loader
+    except Exception:  # noqa: BLE001 — any loader failure means fallback, never a broken call
+        return None
+    try:
+        return tc_loader if tc_loader.available() else None
+    except Exception:  # noqa: BLE001 — availability probe must never crash the fallback
+        return None
+
+
+def _py_estimate_tokens(text: str) -> int:
+    """Estimate token count (rough: 1 token ≈ 4 chars) — parity oracle."""
+    return len(text) // 4
+
+
+def _py_compress_context(context: str) -> str:
+    """Compress context to reduce tokens — parity oracle."""
+    # Remove multiple newlines
+    compressed = re.sub(r"\n{3,}", "\n\n", context)
+
+    # Remove redundant spaces
+    compressed = re.sub(r" {2,}", " ", compressed)
+
+    # Shorten common patterns
+    compressed = compressed.replace("User:", "U:")
+    compressed = compressed.replace("Assistant:", "A:")
+    compressed = compressed.replace("System:", "S:")
+
+    return compressed.strip()
+
+
+
 def optimize_prompt(text: str, context: str = "") -> Dict[str, Any]:
     """Optimize a prompt."""
     return get_optimizer().optimize_prompt(text, context)

src/rune/tui_transport.py

@@ -0,0 +1,108 @@
+#!/usr/bin/env python3
+"""tui_transport.py — the TUI transport seam (H4 slice 1, T4.5).
+
+Contract BUILDER-2026-10-04T10:32:00Z-cli. The TUI's operator surface is
+exactly four public calls; this seam lets them run IN-PROCESS (today) or
+over the /v1 wire (the migration path) behind one interface. Selected by
+RUNE_TUI_TRANSPORT=inprocess|v1 (DEFAULT inprocess — zero behavior change
+on merge; the wave opts in surface by surface).
+
+The V1Transport speaks to the Go front door (or the core sidecar directly):
+  get_status                 -> GET  /v1/status
+  send_task                  -> POST /v1/chat/completions (rune block out)
+  get_conversation_window    -> GET  /v1/conversation?channel=&n=
+  resolve_pending_approval   -> POST /v1/approvals/resolve {approved}
+
+Stdlib only. Dead core raises — never a silent empty answer (canary §5).
+"""
+
+from __future__ import annotations
+
+import json
+import os
+import urllib.error
+import urllib.request
+from typing import Any, List
+
+DEFAULT_CORE_URL = "http://127.0.0.1:8377"  # the Go front door's default port
+
+
+class InProcessTransport:
+    """Today's behavior: direct operator calls in-process."""
+
+    def __init__(self, operator: Any = None):
+        if operator is not None:
+            self._operator = operator
+        else:
+            import rune_operator
+            self._operator = rune_operator.get_operator()
+
+    def get_status(self) -> dict:
+        return self._operator.get_status()
+
+    def send_task(self, description: str, model: str | None = None,
+                  channel: str = "operator") -> dict:
+        return self._operator.send_task(description, model, channel)
+
+    def get_conversation_window(self, channel: str = "operator",
+                                n: int = 8) -> List[dict]:
+        return self._operator.conversation_window(channel, n=n)
+
+    def resolve_pending_approval(self, approved: bool) -> dict:
+        return self._operator.resolve_pending_approval(approved)
+
+
+class V1Transport:
+    """The migration path: the same four calls over the /v1 wire."""
+
+    def __init__(self, base_url: str | None = None, timeout: float = 130.0):
+        self._base = (base_url or os.environ.get(
+            "RUNE_TUI_CORE_URL", DEFAULT_CORE_URL)).rstrip("/")
+        self._timeout = timeout
+
+    def _http(self, method: str, path: str, body: dict | None = None) -> Any:
+        data = json.dumps(body).encode() if body is not None else None
+        req = urllib.request.Request(
+            self._base + path, data=data, method=method,
+            headers={"Content-Type": "application/json"})
+        try:
+            with urllib.request.urlopen(req, timeout=self._timeout) as resp:
+                return json.loads(resp.read().decode())
+        except urllib.error.HTTPError as e:
+            detail = e.read().decode()[:200]
+            raise RuntimeError(
+                f"v1 transport: {method} {path} -> {e.code}: {detail}") from e
+
+    def get_status(self) -> dict:
+        return self._http("GET", "/v1/status")
+
+    def send_task(self, description: str, model: str | None = None,
+                  channel: str = "operator") -> dict:
+        body = {"messages": [{"role": "user", "content": description}]}
+        if model is not None:
+            body["model"] = model
+        out = self._http("POST", "/v1/chat/completions", body)
+        # the full operator result rides the rune block (H2 contract)
+        return out["rune"]
+
+    def get_conversation_window(self, channel: str = "operator",
+                                n: int = 8) -> List[dict]:
+        out = self._http("GET", f"/v1/conversation?channel={channel}&n={n}")
+        return out["messages"]
+
+    def resolve_pending_approval(self, approved: bool) -> dict:
+        return self._http("POST", "/v1/approvals/resolve",
+                          {"approved": bool(approved)})
+
+
+def get_transport(mode: str | None = None):
+    """The seam entry point. RUNE_TUI_TRANSPORT=inprocess|v1 (default
+    inprocess); the wire target is RUNE_TUI_CORE_URL (default the Go front
+    door's port)."""
+    mode = mode or os.environ.get("RUNE_TUI_TRANSPORT", "inprocess")
+    if mode == "v1":
+        return V1Transport()
+    if mode == "inprocess":
+        return InProcessTransport()
+    raise ValueError(f"unknown RUNE_TUI_TRANSPORT mode: {mode!r} "
+                     "(expected inprocess|v1)")

src/rune/verification_layer.py

@@ -7,6 +7,15 @@ file_changed, tool_receipt, constraint_check.
 Usage:
     verification_layer.py verify <result_json> <verifier_type>
     verification_layer.py test
+
+Phase G strangler slice 2 (port 2): the verification semantics (all seven
+verifiers + unknown-type dispatch) are served IN-PROCESS by the Rust
+`evidence_provenance` cdylib through ep_loader.py — parity 33/33 proven vs
+this module's Python vintage (byte-equal to_dict rendering incl. Python
+str() bool rendering True/False in evidence_refs). The VerificationResult
+dataclass stays Python (consumers construct it directly — rune_operator:323);
+the verify_* functions delegate to the Rust core and reconstruct. CLI, test,
+handle_hook and PLUGIN shapes unchanged (git history holds the original).
 """
 
 import json
@@ -15,9 +24,11 @@ import sys
 from dataclasses import dataclass, field
 from typing import List, Optional
 
-_SD = os.path.dirname(os.path.abspath(__file__))
-if _SD not in sys.path:
-    sys.path.insert(0, _SD)
+# ── Rust core wiring (slice-2 port-2 shim pattern) ──────────────────────────
+_CRATE_DIR = "/mnt/workdrive/rune/src/rust/evidence_provenance"
+if _CRATE_DIR not in sys.path:
+    sys.path.insert(0, _CRATE_DIR)
+import ep_loader  # noqa: E402  (loads target/release cdylib)
 
 
 @dataclass
@@ -42,147 +53,66 @@ class VerificationResult:
         }
 
 
+def _rust_verify(result: dict, verifier_type: str) -> VerificationResult:
+    """Delegate to the Rust core; reconstruct the dataclass from its dict.
+
+    The Rust ep_verify returns the to_dict() shape with identical key
+    semantics (parity-proven) — including the unknown-verifier path.
+    """
+    out = json.loads(ep_loader.verify(json.dumps(result), verifier_type))
+    return VerificationResult(
+        passed=out["passed"],
+        verifier_type=out["verifier_type"],
+        evidence_refs=out["evidence_refs"],
+        failures=out["failures"],
+        retryable=out["retryable"],
+        escalation_reason=out["escalation_reason"],
+    )
+
+
 def verify_exit_code(result: dict) -> VerificationResult:
     """Verify using exit code."""
-    exit_code = result.get("exit_code", 0)
-    passed = exit_code == 0
-
-    return VerificationResult(
-        passed=passed,
-        verifier_type="exit_code",
-        evidence_refs=[f"exit_code={exit_code}"],
-        failures=[] if passed else [f"Exit code {exit_code}"],
-        retryable=not passed,
-        escalation_reason=None if passed else "exit_code_nonzero",
-    )
+    return _rust_verify(result, "exit_code")
 
 
 def verify_unit_test(result: dict) -> VerificationResult:
     """Verify using unit tests."""
-    test_output = result.get("test_output", "")
-    tests_passed = result.get("tests_passed", 0)
-    tests_failed = result.get("tests_failed", 0)
-    tests_total = result.get("tests_total", 0)
-
-    passed = tests_failed == 0 and tests_total > 0
-
-    return VerificationResult(
-        passed=passed,
-        verifier_type="unit_test",
-        evidence_refs=[f"tests_passed={tests_passed}", f"tests_failed={tests_failed}"],
-        failures=[] if passed else [f"{tests_failed} tests failed"],
-        retryable=not passed,
-        escalation_reason=None if passed else "test_failures",
-    )
+    return _rust_verify(result, "unit_test")
 
 
 def verify_schema(result: dict) -> VerificationResult:
     """Verify using JSON schema."""
-    schema_valid = result.get("schema_valid", True)
-    schema_errors = result.get("schema_errors", [])
-
-    passed = schema_valid and len(schema_errors) == 0
-
-    return VerificationResult(
-        passed=passed,
-        verifier_type="schema",
-        evidence_refs=[f"schema_valid={schema_valid}"],
-        failures=schema_errors,
-        retryable=not passed,
-        escalation_reason=None if passed else "schema_invalid",
-    )
+    return _rust_verify(result, "schema")
 
 
 def verify_file_exists(result: dict) -> VerificationResult:
     """Verify using file existence."""
-    file_path = result.get("file_path", "")
-    exists = os.path.exists(file_path) if file_path else False
-
-    return VerificationResult(
-        passed=exists,
-        verifier_type="file_exists",
-        evidence_refs=[f"file_path={file_path}"],
-        failures=[] if exists else [f"File not found: {file_path}"],
-        retryable=not exists,
-        escalation_reason=None if exists else "file_not_found",
-    )
+    return _rust_verify(result, "file_exists")
 
 
 def verify_file_changed(result: dict) -> VerificationResult:
     """Verify using file changes."""
-    file_path = result.get("file_path", "")
-    expected_hash = result.get("expected_hash", "")
-    actual_hash = result.get("actual_hash", "")
-
-    passed = expected_hash == actual_hash if expected_hash else True
-
-    return VerificationResult(
-        passed=passed,
-        verifier_type="file_changed",
-        evidence_refs=[f"file_path={file_path}", f"hash_match={passed}"],
-        failures=[] if passed else ["File hash mismatch"],
-        retryable=not passed,
-        escalation_reason=None if passed else "hash_mismatch",
-    )
+    return _rust_verify(result, "file_changed")
 
 
 def verify_tool_receipt(result: dict) -> VerificationResult:
     """Verify using tool receipt."""
-    tool_success = result.get("tool_success", True)
-    tool_error = result.get("tool_error", "")
-
-    passed = tool_success
-
-    return VerificationResult(
-        passed=passed,
-        verifier_type="tool_receipt",
-        evidence_refs=[f"tool_success={tool_success}"],
-        failures=[] if passed else [tool_error],
-        retryable=not passed,
-        escalation_reason=None if passed else "tool_error",
-    )
+    return _rust_verify(result, "tool_receipt")
 
 
 def verify_constraint_check(result: dict) -> VerificationResult:
     """Verify using constraint check."""
-    constraints_met = result.get("constraints_met", True)
-    constraint_violations = result.get("constraint_violations", [])
-
-    passed = constraints_met and len(constraint_violations) == 0
-
-    return VerificationResult(
-        passed=passed,
-        verifier_type="constraint_check",
-        evidence_refs=[f"constraints_met={constraints_met}"],
-        failures=constraint_violations,
-        retryable=not passed,
-        escalation_reason=None if passed else "constraint_violation",
-    )
+    return _rust_verify(result, "constraint_check")
 
 
 def verify(result: dict, verifier_type: str) -> VerificationResult:
-    """Verify a result using the specified verifier."""
-    verifiers = {
-        "exit_code": verify_exit_code,
-        "unit_test": verify_unit_test,
-        "schema": verify_schema,
-        "file_exists": verify_file_exists,
-        "file_changed": verify_file_changed,
-        "tool_receipt": verify_tool_receipt,
-        "constraint_check": verify_constraint_check,
-    }
+    """Verify a result using the specified verifier.
 
-    verifier = verifiers.get(verifier_type)
-    if not verifier:
-        return VerificationResult(
-            passed=False,
-            verifier_type=verifier_type,
-            failures=[f"Unknown verifier: {verifier_type}"],
-            retryable=False,
-            escalation_reason="unknown_verifier",
-        )
-
-    return verifier(result)
+    Dispatch is served by the Rust core (unknown verifier → the same
+    passed=False / retryable=False / escalation_reason=unknown_verifier
+    shape, parity-proven).
+    """
+    return _rust_verify(result, verifier_type)
 
 
 def test_verification():
@@ -256,4 +186,4 @@ PLUGIN = {
     "provides": ["verification_layer"],
     "priority": 45,
     "auto_activate": True,
-}
+}

src/rune/warm_router.py

@@ -139,6 +139,50 @@ def record_neuron_fire(entry_id, score=0.0, session_id="", outcome="unknown"):
         logger.debug("record_neuron_fire failed", exc_info=True)  # Non-critical — don't break firing
 
 
+def _py_base_level_from_uses(used_at_list, now_iso):
+    """ACT-R math over gathered timestamps (H3 slice 3 parity oracle).
+    `now_iso` is an ISO-8601 string (no-clock law). Per-row parse failures
+    (ValueError/TypeError) are skipped like the original; a non-string row
+    raises AttributeError — the original's outer catch turns that into -2.0
+    for the whole call (see base_level_from_uses)."""
+    import math
+
+    if not used_at_list:
+        return -2.0  # Cold start — never fired
+
+    now = datetime.fromisoformat(now_iso)
+    total = 0.0
+    for used_at_str in used_at_list:
+        try:
+            used_at = datetime.fromisoformat(used_at_str.replace("Z", "+00:00"))
+            t_hours = max(0.1, (now - used_at).total_seconds() / 3600)
+            total += t_hours ** (-BASE_LEVEL_DECAY)
+        except (ValueError, TypeError):
+            continue
+
+    if total <= 0:
+        return -2.0
+
+    b_i = math.log(total)
+    # Clamp to prevent extreme values
+    return max(-2.0, min(b_i, 2.0))
+
+
+def base_level_from_uses(used_at_list, now_iso):
+    """Delegated ACT-R math (Rust core when built) with the original's
+    outer exception contract: ANY unexpected failure degrades to -2.0."""
+    from rune.drift_core import _ms_core
+
+    try:
+        core = _ms_core()
+        if core is not None:
+            return core.base_level_from_uses(used_at_list, now_iso)
+        return _py_base_level_from_uses(used_at_list, now_iso)
+    except Exception:
+        logger.debug("base_level_from_uses failed", exc_info=True)
+        return -2.0  # Graceful fallback (the original outer catch)
+
+
 def base_level_activation(entry_id, db=None):
     """ACT-R base-level learning: B_i = ln(Σ t_k^{-d}).
 
@@ -146,10 +190,11 @@ def base_level_activation(entry_id, db=None):
     Power-law decay matches empirical human memory data.
     Returns a score that can be added to the neuron's total activation.
     `db` is an optional pre-opened read-only connection (audit fix: reuse).
+
+    H3 slice 3: the SQLite scan stays here (zero-dep split law); the decay
+    math delegates to the Rust core when built.
     """
     import sqlite3
-    import math
-    from datetime import datetime, timezone
 
     _own_db = db is None
     try:
@@ -164,22 +209,8 @@ def base_level_activation(entry_id, db=None):
         if not rows:
             return -2.0  # Cold start — never fired
 
-        now = datetime.now(timezone.utc)
-        total = 0.0
-        for (used_at_str,) in rows:
-            try:
-                used_at = datetime.fromisoformat(used_at_str.replace("Z", "+00:00"))
-                t_hours = max(0.1, (now - used_at).total_seconds() / 3600)
-                total += t_hours ** (-BASE_LEVEL_DECAY)
-            except (ValueError, TypeError):
-                continue
-
-        if total <= 0:
-            return -2.0
-
-        b_i = math.log(total)
-        # Clamp to prevent extreme values
-        return max(-2.0, min(b_i, 2.0))
+        now_iso = datetime.now(timezone.utc).isoformat()
+        return base_level_from_uses([r[0] for r in rows], now_iso)
 
     except Exception:
         logger.debug("base_level_activation failed", exc_info=True)
@@ -358,53 +389,18 @@ def write_neuron(slug, triggers, body, importance=0.5):
 # ---------------------------------------------------------------- routing ----
 
 
-def score_neuron(neuron, low_text, session_context=None, query_vec=None):
-    """Score how strongly an incoming text fires this neuron.
-
-    Multi-signal scoring (not just keyword matching):
-    1. Keyword match — trigger words in the input (current behavior)
-    2. Semantic match — embedding similarity between input and neuron content
-    3. Context match — relevance to conversation history
-    4. Recency — recently-fired neurons get a boost (active priming)
-    5. Importance — neuron's base importance weight
-
-    The keyword signal is fast and deterministic.
-    The semantic signal catches meaning even without keyword overlap.
-    The context signal provides continuity across turns.
-    `query_vec` is the pre-computed embedding for low_text (audit fix: compute
-    once, reuse for all neurons instead of N HTTP calls).
-    """
-    # Signal 1: Keyword match (existing behavior, fast)
+def _py_score_gate(neuron, low_text, session_context, semantic_score):
+    """Pure gate (H3 slice 3 parity oracle): returns
+    (fires, total, keyword_hits) — the pre-bonus combination decision.
+    Signals 1 (keyword) and 3 (context) are pure; signal 2 (semantic)
+    arrives as an argument because embeddings are I/O."""
     keyword_hits = 0
     for t in neuron["triggers"]:
         if t and t in low_text:
             keyword_hits += 1
 
-    # Signal 2: Semantic similarity (embedding-based, catches meaning)
-    semantic_score = 0.0
-    try:
-        body = neuron.get("body", "") or neuron.get("text", "")
-        if body and len(body) > 20:
-            # Use pre-computed query embedding (audit fix: was computing per neuron)
-            import memory_store as ms
-
-            if query_vec is None:
-                query_vec = ms._embed([low_text]).get(low_text)
-            body_vec = ms._embed([body]).get(body)
-            if query_vec and body_vec:
-                # Cosine similarity
-                dot = sum(a * b for a, b in zip(query_vec, body_vec))
-                na = sum(a * a for a in query_vec) ** 0.5
-                nb = sum(b * b for b in body_vec) ** 0.5
-                if na and nb:
-                    semantic_score = dot / (na * nb)
-    except Exception:
-        logger.debug("score_neuron failed", exc_info=True)  # Semantic scoring is optional — keyword fallback works
-
-    # Signal 3: Context match (if session context provided)
     context_score = 0.0
     if session_context:
-        # Check if neuron's triggers appear in recent context
         context_low = session_context.lower()
         for t in neuron["triggers"]:
             if t and t in context_low:
@@ -414,34 +410,30 @@ def score_neuron(neuron, low_text, session_context=None, query_vec=None):
     # Keywords are the primary gate — high precision for curated triggers.
     # Semantic is a secondary boost — catches meaning without keywords.
     # Context provides continuity across turns.
-    # This is better than simple weighted sum because it preserves keyword
-    # precision while allowing semantic to catch what keywords miss.
     if keyword_hits > 0:
-        # Keywords matched — primary gate open
         keyword_component = keyword_hits * 1.0
-        # Semantic boost (only if keywords already matched)
         semantic_boost = max(0, semantic_score - 0.3) * 0.5 if semantic_score > 0.3 else 0.0
         context_component = min(context_score, 1.0)
         total = keyword_component + semantic_boost + context_component
+        return (True, total, keyword_hits)
     elif semantic_score > 0.55:
         # No keywords, but strong semantic match — secondary gate
         # Higher threshold (0.55 vs 0.3) prevents false positives
-        total = semantic_score * 0.7
-    else:
-        # No signal — don't fire
-        return 0.0
+        return (True, semantic_score * 0.7, keyword_hits)
+    return (False, 0.0, keyword_hits)
 
+
+def _py_score_finish(neuron, low_text, total, b_i, cache_priority, keyword_hits):
+    """Pure finish (H3 slice 3 parity oracle): bonuses, penalties, and the
+    protected boost atop the gate's total. b_i / cache_priority arrive as
+    arguments (None skips that contribution) because SQLite and the cache
+    file are I/O — the wrapper only gathers them on the fired path."""
     # Add importance and length bonus
     score = total + neuron["importance"]
 
-    # Signal 4: Base-level learning (ACT-R B_i)
-    # Frequently-used neurons become permanently easier to retrieve.
-    # Power-law decay: recent uses matter more, but frequency counts.
+    # Signal 4: Base-level learning contribution (cap at 0.3)
     entry_id = neuron.get("id")
-    if entry_id:
-        b_i = base_level_activation(entry_id)
-        # Normalize B_i to a small contribution (cap at 0.3 of total score)
-        # This prevents rich-get-richer while still rewarding useful neurons
+    if entry_id and b_i is not None:
         b_contribution = max(0, min(b_i * 0.1, 0.3))
         score += b_contribution
 
@@ -454,17 +446,8 @@ def score_neuron(neuron, low_text, session_context=None, query_vec=None):
         score += wash_boost
 
     # Signal 6: Cache priority (drift-with-integrity)
-    try:
-        import drift_cache
-
-        cache = drift_cache.DriftCache()
-        if entry_id and cache.contains(entry_id):
-            cache_priority = cache.get_priority(entry_id)
-            cache_boost = min(0.2, cache_priority * 0.1)
-            score += cache_boost
-            cache.access(entry_id)
-    except Exception:
-        logger.debug("score_neuron failed", exc_info=True)
+    if entry_id and cache_priority is not None:
+        score += min(0.2, cache_priority * 0.1)
 
     # Signal 7: Body-knowledge relevance (Souveraine enhancement)
     body_knowledge = neuron.get("body_knowledge", "")
@@ -501,6 +484,85 @@ def score_neuron(neuron, low_text, session_context=None, query_vec=None):
     return score
 
 
+def score_neuron(neuron, low_text, session_context=None, query_vec=None):
+    """Score how strongly an incoming text fires this neuron.
+
+    Multi-signal scoring (not just keyword matching):
+    1. Keyword match — trigger words in the input (current behavior)
+    2. Semantic match — embedding similarity between input and neuron content
+    3. Context match — relevance to conversation history
+    4. Recency — recently-fired neurons get a boost (active priming)
+    5. Importance — neuron's base importance weight
+
+    The keyword signal is fast and deterministic.
+    The semantic signal catches meaning even without keyword overlap.
+    The context signal provides continuity across turns.
+    `query_vec` is the pre-computed embedding for low_text (audit fix: compute
+    once, reuse for all neurons instead of N HTTP calls).
+
+    H3 slice 3: I/O signals are gathered HERE (embeddings, SQLite
+    base-level, cache file — the original's exact reach order), then the
+    combination delegates to the Rust core when built (_py_ variants are
+    the load-bearing fallback AND the parity oracle).
+    """
+    from rune.drift_core import _ms_core
+
+    # Signal 2 gather: semantic similarity (embedding-based, catches meaning)
+    semantic_score = 0.0
+    try:
+        body = neuron.get("body", "") or neuron.get("text", "")
+        if body and len(body) > 20:
+            # Use pre-computed query embedding (audit fix: was computing per neuron)
+            import memory_store as ms
+
+            if query_vec is None:
+                query_vec = ms._embed([low_text]).get(low_text)
+            body_vec = ms._embed([body]).get(body)
+            if query_vec and body_vec:
+                # Cosine similarity
+                dot = sum(a * b for a, b in zip(query_vec, body_vec))
+                na = sum(a * a for a in query_vec) ** 0.5
+                nb = sum(b * b for b in body_vec) ** 0.5
+                if na and nb:
+                    semantic_score = dot / (na * nb)
+    except Exception:
+        logger.debug("score_neuron failed", exc_info=True)  # Semantic scoring is optional — keyword fallback works
+
+    core = _ms_core()
+    if core is not None:
+        fires, total, keyword_hits = core.score_gate(
+            neuron, low_text, session_context, semantic_score)
+    else:
+        fires, total, keyword_hits = _py_score_gate(
+            neuron, low_text, session_context, semantic_score)
+    if not fires:
+        # No signal — don't fire (and, faithful to the original, gather NO
+        # base-level or cache I/O on this path)
+        return 0.0
+
+    # Signal 4 gather: Base-level learning (ACT-R B_i) — fired path only
+    entry_id = neuron.get("id")
+    b_i = base_level_activation(entry_id) if entry_id else None
+
+    # Signal 6 gather: cache priority + access reinforcement — fired path only
+    cache_priority = None
+    try:
+        import drift_cache
+
+        cache = drift_cache.DriftCache()
+        if entry_id and cache.contains(entry_id):
+            cache_priority = cache.get_priority(entry_id)
+            cache.access(entry_id)
+    except Exception:
+        logger.debug("score_neuron failed", exc_info=True)
+
+    if core is not None:
+        return core.score_finish(
+            neuron, low_text, total, b_i, cache_priority, keyword_hits)
+    return _py_score_finish(
+        neuron, low_text, total, b_i, cache_priority, keyword_hits)
+
+
 def route(text, max_tokens=DEFAULT_MAX_TOKENS, max_blocks=None, session_id=""):
     """Return the neurons that fire for `text`, constrained by a TOKEN budget.
 

src/rune/witness.py

@@ -84,76 +84,129 @@ def is_correction(text):
     return False
 
 
-def extract_topic(text):
-    """Extract topic keywords from text. Deterministic."""
-    stopwords = {
-        "the",
-        "a",
-        "an",
-        "is",
-        "are",
-        "was",
-        "were",
-        "be",
-        "been",
-        "being",
-        "have",
-        "has",
-        "had",
-        "do",
-        "does",
-        "did",
-        "will",
-        "would",
-        "could",
-        "should",
-        "may",
-        "might",
-        "shall",
-        "can",
-        "to",
-        "of",
-        "in",
-        "for",
-        "on",
-        "with",
-        "at",
-        "by",
-        "from",
-        "as",
-        "into",
-        "through",
-        "during",
-        "before",
-        "after",
-        "this",
-        "that",
-        "these",
-        "those",
-        "it",
-        "its",
-        "what",
-        "which",
-        "who",
-        "how",
-        "when",
-        "where",
-        "why",
-        "and",
-        "or",
-        "but",
-        "not",
-        "no",
+def _stopwords() -> list:
+    """Gather seam (W3.4 delegation): the topic-extraction stopword table
+    as a SORTED list — sorted so JSON travel and kernel-side matching see
+    a deterministic order regardless of the set's iteration order."""
+    return sorted(_STOPWORDS)
+
+
+_STOPWORDS = {
+    "the", "a", "an", "is", "are", "was", "were", "be", "been", "being",
+    "have", "has", "had", "do", "does", "did", "will", "would", "could",
+    "should", "may", "might", "shall", "can", "to", "of", "in", "for",
+    "on", "with", "at", "by", "from", "as", "into", "through", "during",
+    "before", "after", "this", "that", "these", "those", "it", "its",
+    "what", "which", "who", "how", "when", "where", "why", "and", "or",
+    "but", "not", "no",
+}
+
+
+def _tables() -> dict:
+    """Gather seam: ALL regex pattern tables as data in one dict — the
+    exact contract the cc_witness_signals kernel consumes (parity-proven
+    per-table-row; regex_lite_search is the faithful subset for THESE
+    shapes). Sorted lists keep travel deterministic."""
+    return {
+        "stopwords": _stopwords(),
+        "correction": sorted(CORRECTION_PATTERNS),
+        "commitment": sorted([
+            r"\bI'?ll\s+(send|do|fix|build|check|update|create|write)\b",
+            r"\bI will\s+(send|do|fix|build|check|update|create|write)\b",
+            r"\blet me\s+(send|do|fix|build|check|update|create|write)\b",
+            r"\bremind me\b",
+            r"\bI promise\b",
+            r"\bI need to\b",
+        ]),
+        "contradiction": sorted([r"\b(but|however|actually|wait|that contradicts)\b"]),
+        "preference": sorted([
+            r"\bI (prefer|like|love|hate|dislike)\b",
+            r"\bI'?m (not )?(a fan of|into|interested in)\b",
+            r"\b(don'?t|do not) (like|want|need)\b",
+            r"\b(always|never) (use|do|say)\b",
+        ]),
+        "urgency": sorted([
+            r"\b(urgent|asap|immediately|now|quick|hurry)\b",
+            r"\b(deadline|due|overdue|late)\b",
+            r"\b(important|critical|crucial|vital)\b",
+        ]),
+        "learning": sorted([
+            r"\b(learn|understand|explain|teach|show me)\b",
+            r"\b(how (does|do|did)|why (does|do|did)|what (is|are|was|were))\b",
+            r"\b(I don'?t (understand|know|get))\b",
+        ]),
     }
+
+
+def _core():
+    """The Rust cognition_core when available (strangler: Python fallback
+    load-bearing). RUNE_COGNITION_CORE=python pins the fallback."""
+    return None if cc_loader_pin() else _cc_probe()
+
+
+def _cc_probe():
+    from rune import cc_loader as _cl
+    try:
+        return _cl if _cl.available() else None
+    except Exception:  # noqa: BLE001, S110 — loader probe never crashes the fallback
+        return None
+
+
+def cc_loader_pin() -> bool:
+    """The env pin: RUNE_COGNITION_CORE=python → kernels OFF (shared probe).
+"""
+    import os
+
+    return os.environ.get("RUNE_COGNITION_CORE", "auto") == "python"
+
+
+def extract_topic(text):
+    """Extract topic keywords from text. Deterministic.
+    Delegates to the kernel when built; Python oracle below."""
+    core = _core()
+    if core is not None:
+        try:
+            from rune import cc_loader as _cl
+
+            raw = _cl.witness_extract_topic(text, _stopwords())
+            return list(raw) if isinstance(raw, list) else list(raw or [])
+        except Exception:  # noqa: BLE001, S110 — kernel failure → oracle, intentional silence
+            pass
     words = re.findall(r"\w+", text.lower())
-    return [w for w in words if len(w) > 3 and w not in stopwords][:5]
+    return [w for w in words if len(w) > 3 and w not in _STOPWORDS][:5]
+
+
+def _py_extract_topic(text):
+    """Python parity oracle (W3.4)."""
+    words = re.findall(r"\w+", text.lower())
+    return [w for w in words if len(w) > 3 and w not in _STOPWORDS][:5]
 
 
 def detect_signals(message, tool_error=None, task_status=None, recent_topics=None):
     """Tier 1: Reflex — extract signals from the turn. Pure Python, <1ms.
 
     Returns dict of signals. Empty dict = nothing meaningful happened.
+    Delegates to the kernel when built (tables travel as data per the
+    REGEX-TABLE PORT LAW); Python oracle below is the parity authority.
     """
+    core = _core()
+    if core is not None:
+        try:
+            from rune import cc_loader as _cl
+
+            raw = _cl.witness_signals(message, _tables(), tool_error or "",
+                                      task_status or "", recent_topics or [])
+            if isinstance(raw, dict):
+                return {k: v for k, v in raw.items() if v not in (False, "")}
+            # non-dict → fall through to the oracle
+        except Exception:  # noqa: BLE001, S110 — kernel failure → oracle, intentional silence
+            pass
+    return _py_detect_signals(message, tool_error, task_status, recent_topics)
+
+
+def _py_detect_signals(message, tool_error=None, task_status=None,
+                       recent_topics=None):
+    """Python parity oracle (W3.4). Local tables via the gather seam."""
     signals = {}
 
     # Error signal
@@ -179,62 +232,24 @@ def detect_signals(message, tool_error=None, task_status=None, recent_topics=Non
             signals["topic_drift"] = True
             signals["new_topics"] = list(current_topics - recent_set)[:3]
 
-    # Commitment detection
-    commitment_patterns = [
-        r"\bI'?ll\s+(send|do|fix|build|check|update|create|write)\b",
-        r"\bI will\s+(send|do|fix|build|check|update|create|write)\b",
-        r"\blet me\s+(send|do|fix|build|check|update|create|write)\b",
-        r"\bremind me\b",
-        r"\bI promise\b",
-        r"\bI need to\b",
-    ]
-    if message:
-        for pattern in commitment_patterns:
-            if re.search(pattern, message, re.IGNORECASE):
-                signals["commitment_detected"] = True
-                break
+    # Commitment detection (tables live in _tables() — the gather seam;
+    # the oracle reads the SAME table data the kernel receives)
+    for signal_name, table_name in (
+        ("commitment_detected", "commitment"),
+        ("preference_detected", "preference"),
+        ("urgency_detected", "urgency"),
+        ("learning_opportunity", "learning"),
+    ):
+        if message:
+            for pattern in _tables().get(table_name, []):
+                if re.search(pattern, message, re.IGNORECASE):
+                    signals[signal_name] = True
+                    break
 
     # Contradiction signal (simple: message contains "but" or "however" after a statement)
     if message and re.search(r"\b(but|however|actually|wait|that contradicts)\b", message.lower()):
         signals["possible_contradiction"] = True
 
-    # Preference detection
-    preference_patterns = [
-        r"\bI (prefer|like|love|hate|dislike)\b",
-        r"\bI'?m (not )?(a fan of|into|interested in)\b",
-        r"\b(don'?t|do not) (like|want|need)\b",
-        r"\b(always|never) (use|do|say)\b",
-    ]
-    if message:
-        for pattern in preference_patterns:
-            if re.search(pattern, message, re.IGNORECASE):
-                signals["preference_detected"] = True
-                break
-
-    # Urgency detection
-    urgency_patterns = [
-        r"\b(urgent|asap|immediately|now|quick|hurry)\b",
-        r"\b(deadline|due|overdue|late)\b",
-        r"\b(important|critical|crucial|vital)\b",
-    ]
-    if message:
-        for pattern in urgency_patterns:
-            if re.search(pattern, message, re.IGNORECASE):
-                signals["urgency_detected"] = True
-                break
-
-    # Learning opportunity detection
-    learning_patterns = [
-        r"\b(learn|understand|explain|teach|show me)\b",
-        r"\b(how (does|do|did)|why (does|do|did)|what (is|are|was|were))\b",
-        r"\b(I don'?t (understand|know|get))\b",
-    ]
-    if message:
-        for pattern in learning_patterns:
-            if re.search(pattern, message, re.IGNORECASE):
-                signals["learning_opportunity"] = True
-                break
-
     return signals
 
 

src/rust/capability_scoring/Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "capability_scoring"
+version = "0.1.0"

src/rust/capability_scoring/Cargo.toml

@@ -0,0 +1,13 @@
+[package]
+name = "capability_scoring"
+version = "0.1.0"
+edition = "2021"
+description = "H3 slice 4 (T4.4) — capability_fit.evaluate_fit + capability_broker.score_card Rust port per contract BUILDER-2026-10-04T09:43:55Z-cli; zero-dep"
+
+[lib]
+name = "capability_scoring"
+crate-type = ["rlib", "cdylib"]
+
+[[bin]]
+name = "capability_scoring"
+path = "src/main.rs"

src/rust/capability_scoring/canary_capability_scoring.py

@@ -0,0 +1,208 @@
+#!/usr/bin/env python3
+"""canary_capability_scoring.py — parity battery for the capability_scoring
+crate (H3 slice 4, T4.4, contract BUILDER-2026-10-04T09:43:55Z-cli).
+
+Strangler law: the Rust core must produce BYTE-IDENTICAL output to the
+Python scoring originals (capability_fit.evaluate_fit, capability_broker.
+score_card) on identical inputs.
+
+Sections:
+  1. crate builds (rustup PATH-first per the SYSTEM RUSTC BROKEN law)
+  2. evaluate_fit parity (every fit class + exact reason strings)
+  3. score_card parity (weights, generic penalty, stopwords, priority)
+
+Run: python3 src/rust/capability_scoring/canary_capability_scoring.py
+"""
+
+from __future__ import annotations
+
+import os
+import subprocess
+import sys
+from pathlib import Path
+
+CRATE_DIR = Path(__file__).resolve().parent
+REPO = CRATE_DIR.parents[2]
+sys.path.insert(0, str(REPO / "src"))
+
+PASS = 0
+FAIL = 0
+
+
+def test(name: str, ok: bool, detail: str = "") -> None:
+    global PASS, FAIL
+    if ok:
+        PASS += 1
+        print(f"  ✓ {name}")
+    else:
+        FAIL += 1
+        print(f"  ✗ {name} — {detail}")
+
+
+def build_crate() -> subprocess.CompletedProcess:
+    env = dict(os.environ)
+    # SYSTEM RUSTC BROKEN law: the healthy toolchain lives at the ABSOLUTE
+    # /home/nick path (the runner's HOME has no toolchain — x-ACL covers the
+    # runner user). Fall back to the caller's HOME for other hosts.
+    _absolute = Path("/home/nick/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/bin")
+    rustup_bin = _absolute if _absolute.is_dir() else (
+        Path.home() / ".rustup" / "toolchains" / "stable-x86_64-unknown-linux-gnu" / "bin")
+    env["PATH"] = f"{rustup_bin}:{env.get('PATH', '')}"
+    env["CARGO_TARGET_DIR"] = env.get("CARGO_TARGET_DIR", str(CRATE_DIR / "target"))
+    return subprocess.run(
+        ["cargo", "build", "--release"],
+        cwd=CRATE_DIR, env=env, capture_output=True, text=True, timeout=600)
+
+
+def fit_battery() -> list[tuple[str, list[str], dict]]:
+    return [
+        ("EXACT all covered",
+         ["contract:a", "contract:b"],
+         {"id": "cap:x", "provides": ["contract:a", "contract:b"],
+          "status": "CURRENT", "maturity": "WIRED", "consumers": ["module:y"]}),
+        ("PARTIAL some covered",
+         ["contract:a", "contract:b", "contract:c"],
+         {"id": "cap:x", "provides": ["contract:a"],
+          "status": "CURRENT", "maturity": "DECLARED", "consumers": []}),
+        ("INCOMPATIBLE none covered",
+         ["contract:a"],
+         {"id": "cap:x", "provides": ["contract:zzz"],
+          "status": "CURRENT", "maturity": "PRESENT", "consumers": []}),
+        ("UNKNOWN no provides",
+         ["contract:a"],
+         {"id": "cap:x", "provides": [],
+          "status": "CURRENT", "maturity": "DECLARED", "consumers": []}),
+        ("unhealthy SUPERSEDED",
+         ["contract:a"],
+         {"id": "cap:x", "provides": ["contract:a"],
+          "status": "SUPERSEDED", "maturity": "WIRED", "consumers": []}),
+        ("unhealthy STALE",
+         ["contract:a"],
+         {"id": "cap:x", "provides": ["contract:a"],
+          "status": "STALE", "maturity": "WIRED", "consumers": []}),
+        ("unhealthy superseded_by set",
+         ["contract:a"],
+         {"id": "cap:x", "provides": ["contract:a"], "status": "CURRENT",
+          "superseded_by": "cap:newer", "maturity": "WIRED", "consumers": []}),
+        ("no contracts required -> EXACT",
+         [],
+         {"id": "cap:x", "provides": ["contract:a"],
+          "status": "CURRENT", "maturity": "LIVE_PROVEN", "consumers": ["a", "b"]}),
+        ("unknown maturity ranks zero",
+         ["contract:a"],
+         {"id": "cap:x", "provides": ["contract:a"],
+          "status": "CURRENT", "maturity": "WEIRD", "consumers": []}),
+        ("duplicate provides dedup via set math",
+         ["contract:a"],
+         {"id": "cap:x", "provides": ["contract:a", "contract:a"],
+          "status": "CURRENT", "maturity": "EXERCISED", "consumers": []}),
+    ]
+
+
+def card_battery() -> list[tuple[str, dict, str]]:
+    return [
+        ("name match 4.0",
+         {"name": "query_memory", "capabilities": [], "description": "",
+          "semantic_examples": [], "priority": 100},
+         "run the query_memory tool"),
+        ("capability match 3.0",
+         {"name": "x", "capabilities": ["spine_projection"], "description": "",
+          "semantic_examples": [], "priority": 100},
+         "compute the spine_projection now"),
+        ("generic capability penalized 0.3",
+         {"name": "x", "capabilities": ["audit"], "description": "",
+          "semantic_examples": [], "priority": 100},
+         "please audit this"),
+        ("description match 0.8",
+         {"name": "x", "capabilities": [],
+          "description": "manages deployment pipelines", "semantic_examples": [],
+          "priority": 100},
+         "deployment pipelines"),
+        ("semantic examples 2.0",
+         {"name": "x", "capabilities": [], "description": "",
+          "semantic_examples": ["port the drift scoring"], "priority": 100},
+         "drift scoring"),
+        ("priority bonus high priority",
+         {"name": "x", "capabilities": [], "description": "",
+          "semantic_examples": [], "priority": 0},
+         "anything"),
+        ("stopwords excluded",
+         {"name": "x", "capabilities": ["the"], "description": "",
+          "semantic_examples": [], "priority": 100},
+         "the and or but"),
+        ("empty query",
+         {"name": "x", "capabilities": ["spine"], "description": "",
+          "semantic_examples": [], "priority": 50},
+         ""),
+        ("underscore word chars",
+         {"name": "x", "capabilities": [], "description": "a_b c_d",
+          "semantic_examples": [], "priority": 100},
+         "a_b"),
+        ("missing keys default",
+         {},
+         "nothing matches here"),
+    ]
+
+
+def main() -> int:
+    print("=" * 47)
+    print("canary_capability_scoring — capability scoring parity battery")
+    print("=" * 47)
+
+    print("\n--- 1. Crate builds ---")
+    r = build_crate()
+    test("cargo build --release exits 0", r.returncode == 0,
+         f"rc={r.returncode} err={r.stderr[-300:]!r}")
+    if r.returncode != 0:
+        print(f"\nRESULTS: {PASS} pass, {FAIL} fail")
+        return 1
+    default_so = Path(os.environ.get(
+        "CARGO_TARGET_DIR", str(CRATE_DIR / "target"))) / "release" / "libcapability_scoring.so"
+    so = Path(os.environ.get("CS_RUST_LIB", default_so))
+    test("libcapability_scoring.so exists", so.is_file(), str(so))
+    if not so.is_file():
+        print(f"\nRESULTS: {PASS} pass, {FAIL} fail")
+        return 1
+
+    from rune import capability_broker  # noqa: E402
+    from rune import capability_fit  # noqa: E402
+    from rune import cs_loader  # noqa: E402
+
+    # ── 2. evaluate_fit parity ────────────────────────────────────────────
+    print("\n--- 2. evaluate_fit parity ---")
+    for name, contracts, candidate in fit_battery():
+        req = capability_fit.CapabilityRequirement("test objective",
+                                                   contracts=contracts)
+        py = capability_fit._py_evaluate_fit(req, candidate)
+        rs = cs_loader.evaluate_fit(contracts, candidate)
+        test(f"fit: {name}", py == rs,
+             f"py={py!r}\n  rs={rs!r}")
+
+    # ── 3. score_card parity ──────────────────────────────────────────────
+    print("\n--- 3. score_card parity ---")
+    for name, card, query in card_battery():
+        py = capability_broker._py_score_card(card, query)
+        rs = cs_loader.score_card(card, query)
+        test(f"card: {name}", py == rs, f"py={py!r} rs={rs!r}")
+
+    # ── 4. delegation sanity ──────────────────────────────────────────────
+    print("\n--- 4. Public API delegation ---")
+    req = capability_fit.CapabilityRequirement("obj", contracts=["contract:a"])
+    cand = {"id": "cap:x", "provides": ["contract:a"], "status": "CURRENT",
+            "maturity": "WIRED", "consumers": []}
+    test("public evaluate_fit matches core",
+         capability_fit.evaluate_fit(req, cand)
+         == capability_fit._py_evaluate_fit(req, cand), "mismatch")
+    card = {"name": "query_memory", "capabilities": [], "description": "",
+            "semantic_examples": [], "priority": 100}
+    test("public score_card matches core",
+         capability_broker.score_card(card, "query_memory")
+         == capability_broker._py_score_card(card, "query_memory"), "mismatch")
+
+    print(f"\n{'=' * 47}")
+    print(f"RESULTS: {PASS} pass, {FAIL} fail")
+    return 1 if FAIL else 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())

src/rust/capability_scoring/src/lib.rs

@@ -0,0 +1,103 @@
+//! lib.rs — FFI surface for the capability_scoring crate (H3 slice 4).
+//!
+//! Every function takes ONE JSON argument string and returns a JSON envelope
+//! string: {"ok": true, "value": ...} or {"ok": false, "err": "..."} — the
+//! doc-envelope law. The caller frees returned strings with cs_free_string.
+//! FFI segfault law: cs_loader.py pins argtypes + restype for every symbol.
+
+pub mod pyjson;
+pub mod scoring;
+pub mod wordlists;
+
+use std::ffi::{CStr, CString};
+use std::os::raw::c_char;
+
+fn read_arg(ptr: *const c_char) -> Result<String, String> {
+    if ptr.is_null() {
+        return Err("null argument pointer".to_string());
+    }
+    unsafe { CStr::from_ptr(ptr) }
+        .to_str()
+        .map(|s| s.to_string())
+        .map_err(|e| format!("argument is not valid UTF-8: {}", e))
+}
+
+fn envelope(result: Result<pyjson::Json, String>) -> *mut c_char {
+    let body = match result {
+        Ok(value) => pyjson::Json::Obj(vec![
+            ("ok".to_string(), pyjson::Json::Bool(true)),
+            ("value".to_string(), value),
+        ]),
+        Err(err) => pyjson::Json::Obj(vec![
+            ("ok".to_string(), pyjson::Json::Bool(false)),
+            ("err".to_string(), pyjson::Json::Str(err)),
+        ]),
+    };
+    let out = pyjson::dumps(&body);
+    CString::new(out)
+        .map(|c| c.into_raw())
+        .unwrap_or(std::ptr::null_mut())
+}
+
+fn arg_json(text: &str) -> Result<pyjson::Json, String> {
+    pyjson::parse(text).map_err(|e| format!("argument JSON parse failed: {}", e))
+}
+
+fn get<'a>(v: &'a pyjson::Json, key: &str) -> Option<&'a pyjson::Json> {
+    match v {
+        pyjson::Json::Obj(pairs) => pairs.iter().find(|(k, _)| k == key).map(|(_, v)| v),
+        _ => None,
+    }
+}
+
+fn get_str<'a>(v: &'a pyjson::Json, key: &str) -> Option<&'a str> {
+    match get(v, key) {
+        Some(pyjson::Json::Str(s)) => Some(s),
+        _ => None,
+    }
+}
+
+fn str_list(v: Option<&pyjson::Json>) -> Vec<String> {
+    match v {
+        Some(pyjson::Json::Arr(items)) => items
+            .iter()
+            .filter_map(|x| match x {
+                pyjson::Json::Str(s) => Some(s.clone()),
+                _ => None,
+            })
+            .collect(),
+        _ => vec![],
+    }
+}
+
+/// cs_evaluate_fit({"contracts": [...], "candidate": {...}}) -> fit dict
+#[no_mangle]
+pub extern "C" fn cs_evaluate_fit(arg: *const c_char) -> *mut c_char {
+    let result = read_arg(arg).and_then(|text| arg_json(&text)).and_then(|a| {
+        let contracts = str_list(get(&a, "contracts"));
+        let candidate = get(&a, "candidate").cloned().ok_or("arg.candidate required")?;
+        Ok(scoring::evaluate_fit(&contracts, &candidate))
+    });
+    envelope(result)
+}
+
+/// cs_score_card({"card": {...}, "query": "..."}) -> number
+#[no_mangle]
+pub extern "C" fn cs_score_card(arg: *const c_char) -> *mut c_char {
+    let result = read_arg(arg).and_then(|text| arg_json(&text)).and_then(|a| {
+        let card = get(&a, "card").cloned().ok_or("arg.card required")?;
+        let query = get_str(&a, "query").unwrap_or("");
+        Ok(pyjson::Json::Num(scoring::score_card(&card, query)))
+    });
+    envelope(result)
+}
+
+/// Free a string returned by any cs_* function.
+#[no_mangle]
+pub extern "C" fn cs_free_string(ptr: *mut c_char) {
+    if !ptr.is_null() {
+        unsafe {
+            let _ = CString::from_raw(ptr);
+        }
+    }
+}

src/rust/capability_scoring/src/main.rs

@@ -0,0 +1,87 @@
+//! main.rs — CLI front for the capability_scoring core (runner/debug use).
+//!
+//! stdin:  {"op": "evaluate_fit"|"score_card", "arg": <json>}
+//! stdout: the same {ok, value|err} envelope the FFI returns.
+
+use capability_scoring::{pyjson, scoring};
+use std::io::Read;
+
+fn get<'a>(v: &'a pyjson::Json, key: &str) -> Option<&'a pyjson::Json> {
+    match v {
+        pyjson::Json::Obj(pairs) => pairs.iter().find(|(k, _)| k == key).map(|(_, v)| v),
+        _ => None,
+    }
+}
+
+fn str_list(v: Option<&pyjson::Json>) -> Vec<String> {
+    match v {
+        Some(pyjson::Json::Arr(items)) => items
+            .iter()
+            .filter_map(|x| match x {
+                pyjson::Json::Str(s) => Some(s.clone()),
+                _ => None,
+            })
+            .collect(),
+        _ => vec![],
+    }
+}
+
+fn main() {
+    let mut input = String::new();
+    if std::io::stdin().read_to_string(&mut input).is_err() {
+        emit(Err("failed to read stdin".to_string()), false);
+        return;
+    }
+    let parsed = match pyjson::parse(&input) {
+        Ok(p) => p,
+        Err(e) => {
+            emit(Err(format!("stdin JSON parse failed: {}", e)), false);
+            return;
+        }
+    };
+    let op = match get(&parsed, "op") {
+        Some(pyjson::Json::Str(s)) => s.clone(),
+        _ => {
+            emit(Err("op required".to_string()), false);
+            return;
+        }
+    };
+    let arg = get(&parsed, "arg").cloned().unwrap_or(pyjson::Json::Null);
+    let result = match op.as_str() {
+        "evaluate_fit" => {
+            let contracts = str_list(get(&arg, "contracts"));
+            match get(&arg, "candidate") {
+                Some(c) => Ok(scoring::evaluate_fit(&contracts, c)),
+                None => Err("arg.candidate required".to_string()),
+            }
+        }
+        "score_card" => match get(&arg, "card") {
+            Some(c) => {
+                let query = match get(&arg, "query") {
+                    Some(pyjson::Json::Str(s)) => s.clone(),
+                    _ => String::new(),
+                };
+                Ok(pyjson::Json::Num(scoring::score_card(c, &query)))
+            }
+            None => Err("arg.card required".to_string()),
+        },
+        other => Err(format!("unknown op: {:?}", other)),
+    };
+    let ok = result.is_ok();
+    emit(result, ok);
+}
+
+fn emit(result: Result<pyjson::Json, String>, ok: bool) {
+    let body = match result {
+        Ok(value) => pyjson::Json::Obj(vec![
+            ("ok".to_string(), pyjson::Json::Bool(true)),
+            ("value".to_string(), value),
+        ]),
+        Err(err) => pyjson::Json::Obj(vec![
+            ("ok".to_string(), pyjson::Json::Bool(false)),
+            ("err".to_string(), pyjson::Json::Str(err)),
+        ]),
+    };
+    println!("{}", pyjson::dumps(&body));
+    std::process::exit(if ok { 0 } else { 1 });
+}

src/rust/capability_scoring/src/pyjson.rs

@@ -0,0 +1,444 @@
+//! json_min.py — minimal JSON parse/serialize with Python-parity output.
+//!
+//! Exists because contract C1 demands byte-comparable state files with the
+//! Python implementation (`json.dumps` / `json.dump(indent=2)`):
+//!   - compact separators: ", " between items, ": " between key/value
+//!     (Python json.dumps DEFAULTS — no separators arg means the space-y form)
+//!   - ensure_ascii: non-ASCII escaped as \uXXXX (with surrogate pairs)
+//!   - floats: shortest round-trip repr (Rust `{}` == Python `repr` for f64
+//!     in every value this module produces, including arithmetic artifacts
+//!     like 0.30000000000000004)
+//!   - indent=2 dump: newline+indent after every item separator, "{}" when
+//!     empty, NO trailing newline (json.dump never writes one)
+//! Object key order is preserved (Vec of pairs) — matches Python 3.7+ dict
+//! insertion order, which the classification tie-break law depends on.
+
+use std::fmt::Write as _;
+
+/// Preserved-order JSON value.
+#[derive(Debug, Clone, PartialEq)]
+pub enum Json {
+    Null,
+    Bool(bool),
+    Num(f64),
+    Str(String),
+    Arr(Vec<Json>),
+    Obj(Vec<(String, Json)>),
+}
+
+impl Json {
+    pub fn get(&self, key: &str) -> Option<&Json> {
+        match self {
+            Json::Obj(pairs) => pairs.iter().find(|(k, _)| k == key).map(|(_, v)| v),
+            _ => None,
+        }
+    }
+}
+
+// ── parsing ─────────────────────────────────────────────────────────────────
+
+pub fn parse(input: &str) -> Result<Json, String> {
+    let bytes = input.as_bytes();
+    let mut p = Parser { b: bytes, i: 0 };
+    p.skip_ws();
+    let v = p.value()?;
+    p.skip_ws();
+    if p.i != bytes.len() {
+        return Err(format!("trailing data at byte {}", p.i));
+    }
+    Ok(v)
+}
+
+struct Parser<'a> {
+    b: &'a [u8],
+    i: usize,
+}
+
+impl<'a> Parser<'a> {
+    fn skip_ws(&mut self) {
+        while self.i < self.b.len() && matches!(self.b[self.i], b' ' | b'\t' | b'\n' | b'\r') {
+            self.i += 1;
+        }
+    }
+
+    fn peek(&self) -> Option<u8> {
+        self.b.get(self.i).copied()
+    }
+
+    fn expect(&mut self, c: u8) -> Result<(), String> {
+        if self.peek() == Some(c) {
+            self.i += 1;
+            Ok(())
+        } else {
+            Err(format!("expected '{}' at byte {}", c as char, self.i))
+        }
+    }
+
+    fn value(&mut self) -> Result<Json, String> {
+        match self.peek() {
+            Some(b'{') => self.object(),
+            Some(b'[') => self.array(),
+            Some(b'"') => Ok(Json::Str(self.string()?)),
+            Some(b't') => self.literal("true", Json::Bool(true)),
+            Some(b'f') => self.literal("false", Json::Bool(false)),
+            Some(b'n') => self.literal("null", Json::Null),
+            Some(c) if c == b'-' || c.is_ascii_digit() => self.number(),
+            _ => Err(format!("unexpected byte at {}", self.i)),
+        }
+    }
+
+    fn literal(&mut self, lit: &str, v: Json) -> Result<Json, String> {
+        if self.b[self.i..].starts_with(lit.as_bytes()) {
+            self.i += lit.len();
+            Ok(v)
+        } else {
+            Err(format!("bad literal at byte {}", self.i))
+        }
+    }
+
+    fn object(&mut self) -> Result<Json, String> {
+        self.expect(b'{')?;
+        let mut pairs = Vec::new();
+        self.skip_ws();
+        if self.peek() == Some(b'}') {
+            self.i += 1;
+            return Ok(Json::Obj(pairs));
+        }
+        loop {
+            self.skip_ws();
+            let key = self.string()?;
+            self.skip_ws();
+            self.expect(b':')?;
+            self.skip_ws();
+            let val = self.value()?;
+            pairs.push((key, val));
+            self.skip_ws();
+            match self.peek() {
+                Some(b',') => self.i += 1,
+                Some(b'}') => {
+                    self.i += 1;
+                    return Ok(Json::Obj(pairs));
+                }
+                _ => return Err(format!("expected ',' or '}}' at byte {}", self.i)),
+            }
+        }
+    }
+
+    fn array(&mut self) -> Result<Json, String> {
+        self.expect(b'[')?;
+        let mut items = Vec::new();
+        self.skip_ws();
+        if self.peek() == Some(b']') {
+            self.i += 1;
+            return Ok(Json::Arr(items));
+        }
+        loop {
+            self.skip_ws();
+            items.push(self.value()?);
+            self.skip_ws();
+            match self.peek() {
+                Some(b',') => self.i += 1,
+                Some(b']') => {
+                    self.i += 1;
+                    return Ok(Json::Arr(items));
+                }
+                _ => return Err(format!("expected ',' or ']' at byte {}", self.i)),
+            }
+        }
+    }
+
+    fn string(&mut self) -> Result<String, String> {
+        self.expect(b'"')?;
+        let mut out = String::new();
+        loop {
+            match self.peek() {
+                None => return Err("unterminated string".into()),
+                Some(b'"') => {
+                    self.i += 1;
+                    return Ok(out);
+                }
+                Some(b'\\') => {
+                    self.i += 1;
+                    match self.peek() {
+                        Some(b'"') => out.push('"'),
+                        Some(b'\\') => out.push('\\'),
+                        Some(b'/') => out.push('/'),
+                        Some(b'b') => out.push('\u{0008}'),
+                        Some(b'f') => out.push('\u{000C}'),
+                        Some(b'n') => out.push('\n'),
+                        Some(b'r') => out.push('\r'),
+                        Some(b't') => out.push('\t'),
+                        Some(b'u') => {
+                            let cp = self.hex4()?;
+                            // surrogate pair handling (Python accepts these)
+                            if (0xD800..0xDC00).contains(&cp) {
+                                if self.b[self.i..].starts_with(b"\\u") {
+                                    self.i += 1; // now at 'u' — hex4 reads [i+1..i+5]
+                                    let lo = self.hex4()?;
+                                    if (0xDC00..0xE000).contains(&lo) {
+                                        let c = 0x10000
+                                            + ((cp - 0xD800) << 10)
+                                            + (lo - 0xDC00);
+                                        out.push(
+                                            char::from_u32(c)
+                                                .ok_or("bad surrogate pair")?,
+                                        );
+                                    } else {
+                                        // lone high surrogate — Python keeps it as
+                                        // an escaped lone surrogate; we degrade to
+                                        // U+FFFD (not produced by this writer)
+                                        out.push('\u{FFFD}');
+                                    }
+                                } else {
+                                    out.push('\u{FFFD}');
+                                }
+                            } else {
+                                out.push(char::from_u32(cp).unwrap_or('\u{FFFD}'));
+                            }
+                            continue; // hex4 already advanced i
+                        }
+                        _ => return Err(format!("bad escape at byte {}", self.i)),
+                    }
+                    self.i += 1;
+                }
+                Some(_) => {
+                    // consume one UTF-8 scalar
+                    let s = &self.b[self.i..];
+                    let ch_len = utf8_len(s[0]);
+                    let chunk = std::str::from_utf8(&s[..ch_len.min(s.len())])
+                        .map_err(|_| "bad utf8")?;
+                    out.push_str(chunk);
+                    self.i += ch_len;
+                }
+            }
+        }
+    }
+
+    fn hex4(&mut self) -> Result<u32, String> {
+        if self.i + 4 > self.b.len() {
+            return Err("short \\u escape".into());
+        }
+        let s = std::str::from_utf8(&self.b[self.i + 1..self.i + 5])
+            .map_err(|_| "bad \\u")?;
+        let v = u32::from_str_radix(s, 16).map_err(|_| "bad \\u digits")?;
+        self.i += 5; // 'u' + 4 hex digits (caller consumed the backslash)
+        Ok(v)
+    }
+
+    fn number(&mut self) -> Result<Json, String> {
+        let start = self.i;
+        if self.peek() == Some(b'-') {
+            self.i += 1;
+        }
+        while matches!(self.peek(), Some(c) if c.is_ascii_digit()) {
+            self.i += 1;
+        }
+        if self.peek() == Some(b'.') {
+            self.i += 1;
+            while matches!(self.peek(), Some(c) if c.is_ascii_digit()) {
+                self.i += 1;
+            }
+        }
+        if matches!(self.peek(), Some(b'e') | Some(b'E')) {
+            self.i += 1;
+            if matches!(self.peek(), Some(b'+') | Some(b'-')) {
+                self.i += 1;
+            }
+            while matches!(self.peek(), Some(c) if c.is_ascii_digit()) {
+                self.i += 1;
+            }
+        }
+        let s = std::str::from_utf8(&self.b[start..self.i]).map_err(|_| "bad number")?;
+        s.parse::<f64>()
+            .map(Json::Num)
+            .map_err(|_| format!("bad number '{}'", s))
+    }
+}
+
+fn utf8_len(b: u8) -> usize {
+    if b < 0x80 {
+        1
+    } else if b >> 5 == 0b110 {
+        2
+    } else if b >> 4 == 0b1110 {
+        3
+    } else {
+        4
+    }
+}
+
+// ── serialization (Python json.dumps / json.dump(indent=2) parity) ─────────
+
+/// Python `json.dumps(value, sort_keys=True)` — compact separators, object
+/// keys recursively sorted. Python sorts str keys by code point; Rust's
+/// byte-wise UTF-8 `String` ordering is identical for valid UTF-8, so a
+/// plain `sort_by` on the key is faithful.
+pub fn dumps_sorted(v: &Json) -> String {
+    let mut out = String::new();
+    write_compact_sorted(&mut out, v);
+    out
+}
+
+fn write_compact_sorted(out: &mut String, v: &Json) {
+    match v {
+        Json::Obj(pairs) => {
+            let mut sorted: Vec<&(String, Json)> = pairs.iter().collect();
+            sorted.sort_by(|a, b| a.0.cmp(&b.0));
+            out.push('{');
+            for (i, (k, val)) in sorted.iter().enumerate() {
+                if i > 0 {
+                    out.push_str(", ");
+                }
+                write_escaped(out, k);
+                out.push_str(": ");
+                write_compact_sorted(out, val);
+            }
+            out.push('}');
+        }
+        Json::Arr(items) => {
+            out.push('[');
+            for (i, item) in items.iter().enumerate() {
+                if i > 0 {
+                    out.push_str(", ");
+                }
+                write_compact_sorted(out, item);
+            }
+            out.push(']');
+        }
+        other => write_compact(out, other),
+    }
+}
+
+/// Python `json.dumps(value)` — compact separators `", "` / `": "`,
+/// ensure_ascii escaping.
+pub fn dumps(v: &Json) -> String {
+    let mut out = String::new();
+    write_compact(&mut out, v);
+    out
+}
+
+fn write_compact(out: &mut String, v: &Json) {
+    match v {
+        Json::Null => out.push_str("null"),
+        Json::Bool(true) => out.push_str("true"),
+        Json::Bool(false) => out.push_str("false"),
+        Json::Num(n) => out.push_str(&fmt_num(*n)),
+        Json::Str(s) => write_escaped(out, s),
+        Json::Arr(items) => {
+            out.push('[');
+            for (i, item) in items.iter().enumerate() {
+                if i > 0 {
+                    out.push_str(", ");
+                }
+                write_compact(out, item);
+            }
+            out.push(']');
+        }
+        Json::Obj(pairs) => {
+            out.push('{');
+            for (i, (k, val)) in pairs.iter().enumerate() {
+                if i > 0 {
+                    out.push_str(", ");
+                }
+                write_escaped(out, k);
+                out.push_str(": ");
+                write_compact(out, val);
+            }
+            out.push('}');
+        }
+    }
+}
+
+/// Python `json.dump(value, indent=2)` — item separator becomes
+/// `",\n<indent>"`, key separator `": "`, empty container → `{}` / `[]`,
+/// NO trailing newline.
+pub fn dump_indent2(v: &Json) -> String {
+    let mut out = String::new();
+    write_indent(&mut out, v, 0);
+    out
+}
+
+fn write_indent(out: &mut String, v: &Json, depth: usize) {
+    match v {
+        Json::Arr(items) if !items.is_empty() => {
+            out.push_str("[\n");
+            for (i, item) in items.iter().enumerate() {
+                if i > 0 {
+                    out.push_str(",\n");
+                }
+                push_indent(out, depth + 1);
+                write_indent(out, item, depth + 1);
+            }
+            out.push('\n');
+            push_indent(out, depth);
+            out.push(']');
+        }
+        Json::Arr(_) => out.push_str("[]"),
+        Json::Obj(pairs) if !pairs.is_empty() => {
+            out.push_str("{\n");
+            for (i, (k, val)) in pairs.iter().enumerate() {
+                if i > 0 {
+                    out.push_str(",\n");
+                }
+                push_indent(out, depth + 1);
+                write_escaped(out, k);
+                out.push_str(": ");
+                write_indent(out, val, depth + 1);
+            }
+            out.push('\n');
+            push_indent(out, depth);
+            out.push('}');
+        }
+        Json::Obj(_) => out.push_str("{}"),
+        other => write_compact(out, other),
+    }
+}
+
+fn push_indent(out: &mut String, depth: usize) {
+    for _ in 0..depth {
+        out.push_str("  ");
+    }
+}
+
+/// Integer-shaped f64 prints without a decimal point (matching how this
+/// module's writers emit counts); all other values use shortest round-trip.
+pub fn fmt_num(n: f64) -> String {
+    if n.is_finite() && n.fract() == 0.0 && n.abs() < 9.007_199_254_740_992e15 {
+        return format!("{}", n as i64);
+    }
+    format!("{}", n)
+}
+
+/// Python `json.dumps` string escaping with ensure_ascii=True.
+pub fn write_escaped(out: &mut String, s: &str) {
+    out.push('"');
+    for ch in s.chars() {
+        match ch {
+            '"' => out.push_str("\\\""),
+            '\\' => out.push_str("\\\\"),
+            '\n' => out.push_str("\\n"),
+            '\r' => out.push_str("\\r"),
+            '\t' => out.push_str("\\t"),
+            '\u{0008}' => out.push_str("\\b"),
+            '\u{000C}' => out.push_str("\\f"),
+            c if (c as u32) < 0x20 => {
+                let _ = write!(out, "\\u{:04x}", c as u32);
+            }
+            c if (c as u32) <= 0x7E => out.push(c),
+            // ensure_ascii: escape everything non-ASCII, surrogate pairs
+            // for astral planes (Python behaviour)
+            c => {
+                let cp = c as u32;
+                if cp > 0xFFFF {
+                    let v = cp - 0x10000;
+                    let hi = 0xD800 + (v >> 10);
+                    let lo = 0xDC00 + (v & 0x3FF);
+                    let _ = write!(out, "\\u{:04x}\\u{:04x}", hi, lo);
+                } else {
+                    let _ = write!(out, "\\u{:04x}", cp);
+                }
+            }
+        }
+    }
+    out.push('"');
+}

src/rust/capability_scoring/src/scoring.rs

@@ -0,0 +1,220 @@
+//! scoring.rs — capability_fit.evaluate_fit + capability_broker.score_card,
+//! faithful ports (H3 slice 4, contract BUILDER-2026-10-04T09:43:55Z-cli).
+//!
+//! Faithfulness traps (each canary-covered):
+//!   * Python set math on provides/contracts (dedup, sorted missing list).
+//!   * `superseded_by` truthiness joins SUPERSEDED/STALE as unhealthy.
+//!   * EXACT when no contracts are required (missing is empty).
+//!   * re.findall(r"\w+") hand-rolled as ASCII word-char runs [A-Za-z0-9_]+
+//!     (Python's \w is Unicode-aware, but every input these sets see in
+//!     production is ASCII; the canary covers the ASCII contract).
+//!   * generic_caps penalty applies per OVERLAP COUNT, not per capability.
+
+use crate::pyjson::Json;
+use crate::wordlists::{GENERIC_CAPS, STOPWORDS};
+
+const MATURITY_ORDER: [&str; 6] = [
+    "DECLARED", "PRESENT", "WIRED", "REACHABLE", "EXERCISED", "LIVE_PROVEN",
+];
+
+fn maturity_rank(m: &str) -> i64 {
+    MATURITY_ORDER.iter().position(|&x| x == m).map(|i| i as i64).unwrap_or(0)
+}
+
+fn obj_get<'a>(v: &'a Json, key: &str) -> Option<&'a Json> {
+    match v {
+        Json::Obj(pairs) => pairs.iter().find(|(k, _)| k == key).map(|(_, v)| v),
+        _ => None,
+    }
+}
+
+fn str_list(v: Option<&Json>) -> Vec<String> {
+    match v {
+        Some(Json::Arr(items)) => items
+            .iter()
+            .filter_map(|x| match x {
+                Json::Str(s) => Some(s.clone()),
+                _ => None,
+            })
+            .collect(),
+        _ => vec![],
+    }
+}
+
+fn str_or<'a>(v: Option<&'a Json>, default: &'a str) -> &'a str {
+    match v {
+        Some(Json::Str(s)) => s,
+        _ => default,
+    }
+}
+
+// ── evaluate_fit ────────────────────────────────────────────────────────────
+
+/// DETERMINISTIC fit of one candidate against a requirement's contracts.
+/// `contracts` is the requirement's (already sorted) contract list.
+pub fn evaluate_fit(contracts: &[String], candidate: &Json) -> Json {
+    let provides = str_list(obj_get(candidate, "provides"));
+    let provides_set: Vec<&String> = provides.iter().collect();
+    let mut missing: Vec<String> = contracts
+        .iter()
+        .filter(|c| !provides_set.contains(c))
+        .cloned()
+        .collect();
+    missing.sort();
+    missing.dedup();
+    let covered = contracts.len() as i64 - missing.len() as i64;
+
+    let status = str_or(obj_get(candidate, "status"), "");
+    let superseded_by = obj_get(candidate, "superseded_by");
+    // Python bool(candidate.get("superseded_by")): any truthy value.
+    let unhealthy = status == "SUPERSEDED"
+        || status == "STALE"
+        || matches!(superseded_by, Some(Json::Str(s)) if !s.is_empty())
+        || matches!(superseded_by, Some(Json::Bool(true)))
+        || matches!(superseded_by, Some(Json::Num(n)) if *n != 0.0);
+
+    let maturity = maturity_rank(str_or(obj_get(candidate, "maturity"), "DECLARED"));
+    let id = str_or(obj_get(candidate, "id"), "");
+
+    let mk = |fit: &str, reason: String, covered: i64, with_extras: bool| {
+        let mut out = Json::Obj(vec![
+            ("candidate".to_string(), Json::Str(id.to_string())),
+            ("fit".to_string(), Json::Str(fit.to_string())),
+            ("reason".to_string(), Json::Str(reason)),
+            (
+                "missing_contracts".to_string(),
+                Json::Arr(missing.iter().map(|m| Json::Str(m.clone())).collect()),
+            ),
+            ("covered".to_string(), Json::Num(covered as f64)),
+        ]);
+        if with_extras {
+            if let Json::Obj(ref mut pairs) = out {
+                pairs.push(("maturity_rank".to_string(), Json::Num(maturity as f64)));
+                pairs.push((
+                    "consumers".to_string(),
+                    obj_get(candidate, "consumers").cloned().unwrap_or(Json::Arr(vec![])),
+                ));
+            }
+        }
+        out
+    };
+
+    if unhealthy {
+        return mk(
+            "INCOMPATIBLE",
+            format!("candidate status {} — not reusable as-is", status),
+            covered,
+            false,
+        );
+    }
+    if !contracts.is_empty() && provides.is_empty() {
+        return mk(
+            "UNKNOWN",
+            "candidate exposes no contracts to check".to_string(),
+            0,
+            false,
+        );
+    }
+    if missing.is_empty() {
+        mk("EXACT", "all required contracts provided".to_string(), covered, true)
+    } else if covered > 0 {
+        mk(
+            "PARTIAL",
+            format!("covers {}/{} required contracts", covered, contracts.len()),
+            covered,
+            true,
+        )
+    } else {
+        mk(
+            "INCOMPATIBLE",
+            "provides none of the required contracts".to_string(),
+            covered,
+            true,
+        )
+    }
+}
+
+// ── score_card ──────────────────────────────────────────────────────────────
+
+/// Python re.findall(r"\w+", s) for ASCII inputs: maximal [A-Za-z0-9_] runs.
+fn word_runs(s: &str) -> Vec<String> {
+    let mut out = vec![];
+    let mut cur = String::new();
+    for ch in s.chars() {
+        if ch.is_ascii_alphanumeric() || ch == '_' {
+            cur.push(ch);
+        } else if !cur.is_empty() {
+            out.push(std::mem::take(&mut cur));
+        }
+    }
+    if !cur.is_empty() {
+        out.push(cur);
+    }
+    out
+}
+
+fn word_set(s: &str) -> Vec<String> {
+    let mut out = word_runs(s);
+    out.sort();
+    out.dedup();
+    out
+}
+
+fn minus(hay: &[String], needles: &[&str]) -> Vec<String> {
+    hay.iter().filter(|w| !needles.contains(&w.as_str())).cloned().collect()
+}
+
+fn overlap_count(a: &[String], b: &[String]) -> usize {
+    a.iter().filter(|w| b.contains(w)).count()
+}
+
+pub fn score_card(card: &Json, query: &str) -> f64 {
+    let query_low = query.to_lowercase();
+    let query_words = word_set(&query_low);
+    let query_content = minus(&query_words, &STOPWORDS);
+
+    let mut score = 0.0;
+
+    // Direct capability name match (highest weight, generic penalized)
+    for cap in str_list(obj_get(card, "capabilities")) {
+        let cap_words = word_set(&cap.to_lowercase());
+        let overlap = overlap_count(&query_content, &cap_words);
+        if overlap > 0 {
+            if GENERIC_CAPS.contains(&cap.to_lowercase().as_str()) {
+                score += 0.3 * overlap as f64;
+            } else {
+                score += 3.0 * overlap as f64;
+            }
+        }
+    }
+
+    // Description word match (medium weight)
+    let desc = str_or(obj_get(card, "description"), "").to_lowercase();
+    let desc_words = minus(&word_set(&desc), &STOPWORDS);
+    score += 0.8 * overlap_count(&query_content, &desc_words) as f64;
+
+    // Semantic example match (high weight — curated)
+    for example in str_list(obj_get(card, "semantic_examples")) {
+        let example_words = minus(&word_set(&example.to_lowercase()), &STOPWORDS);
+        let overlap = overlap_count(&query_content, &example_words);
+        if overlap > 0 {
+            score += 2.0 * overlap as f64;
+        }
+    }
+
+    // Name match (very high weight — direct name reference)
+    let name_words = word_set(&str_or(obj_get(card, "name"), "").to_lowercase());
+    let overlap = overlap_count(&query_words, &name_words);
+    if overlap > 0 {
+        score += 4.0 * overlap as f64;
+    }
+
+    // Priority bonus (lower number = higher priority)
+    let priority = match obj_get(card, "priority") {
+        Some(Json::Num(n)) => *n,
+        _ => 100.0,
+    };
+    score += ((100.0 - priority) / 200.0).max(0.0);
+
+    score
+}

src/rust/capability_scoring/src/wordlists.rs

@@ -0,0 +1,113 @@
+//! Generated from capability_broker.py score_card literals — do not edit by hand.
+
+pub const GENERIC_CAPS: [&str; 12] = [
+    "audit",
+    "growth",
+    "memory_env",
+    "read",
+    "reasoning",
+    "recall",
+    "research",
+    "skills",
+    "status",
+    "tasks",
+    "voice",
+    "write",
+];
+
+pub const STOPWORDS: [&str; 94] = [
+    "a",
+    "about",
+    "above",
+    "after",
+    "again",
+    "against",
+    "all",
+    "an",
+    "and",
+    "are",
+    "as",
+    "at",
+    "be",
+    "because",
+    "been",
+    "before",
+    "being",
+    "below",
+    "between",
+    "both",
+    "but",
+    "by",
+    "can",
+    "could",
+    "did",
+    "do",
+    "does",
+    "during",
+    "each",
+    "every",
+    "few",
+    "for",
+    "from",
+    "further",
+    "had",
+    "has",
+    "have",
+    "here",
+    "how",
+    "if",
+    "in",
+    "into",
+    "is",
+    "it",
+    "its",
+    "just",
+    "may",
+    "might",
+    "more",
+    "most",
+    "no",
+    "nor",
+    "not",
+    "of",
+    "off",
+    "on",
+    "once",
+    "only",
+    "or",
+    "other",
+    "out",
+    "over",
+    "own",
+    "same",
+    "shall",
+    "should",
+    "so",
+    "some",
+    "such",
+    "than",
+    "that",
+    "the",
+    "then",
+    "there",
+    "these",
+    "this",
+    "those",
+    "through",
+    "to",
+    "too",
+    "under",
+    "very",
+    "was",
+    "were",
+    "what",
+    "when",
+    "where",
+    "which",
+    "while",
+    "who",
+    "why",
+    "will",
+    "with",
+    "would",
+];

src/rust/cognition_core/Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "cognition_core"
+version = "0.1.0"

src/rust/cognition_core/Cargo.toml

@@ -0,0 +1,13 @@
+[package]
+name = "cognition_core"
+version = "0.1.0"
+edition = "2021"
+description = "R2 W3.1 — deterministic cognition kernels (context_broker first) per contract BUILDER-2026-10-05T07:19:27Z-cli; zero-dep, no-clock"
+
+[lib]
+name = "cognition_core"
+crate-type = ["rlib", "cdylib"]
+
+[[bin]]
+name = "cognition_core"
+path = "src/main.rs"

src/rust/cognition_core/canary_cognition_core.py

@@ -0,0 +1,134 @@
+#!/usr/bin/env python3
+"""canary_cognition_core.py — parity battery for the cognition_core crate
+(R2 Wave 3 slice 1, contract BUILDER-2026-10-05T07:19:27Z-cli).
+
+First tenant: context_broker's deterministic kernel — default_estimator,
+default_budget, default_memory_budget, memory_disabled.
+
+Parity floor: byte-identical outputs on identical inputs.
+Improvement (measured): the estimator's per-character loop may become a
+faster path IF identical — measured, or reverted.
+
+Run: python3 src/rust/cognition_core/canary_cognition_core.py
+"""
+
+from __future__ import annotations
+
+import json
+import os
+import subprocess
+import sys
+import time
+from pathlib import Path
+
+CRATE = Path(__file__).resolve().parent
+REPO = CRATE.parents[2]
+sys.path.insert(0, str(REPO / "src"))
+PASS = FAIL = 0
+NOW = "2026-10-05T07:30:00+00:00"
+
+
+def check(name, ok, detail=""):
+    global PASS, FAIL
+    if ok:
+        PASS += 1
+        print(f"  ✓ {name}")
+    else:
+        FAIL += 1
+        print(f"  ✗ {name} — {detail}")
+
+
+def build():
+    env = dict(os.environ)
+    absolute = Path("/home/nick/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/bin")
+    rust = absolute if absolute.is_dir() else (
+        Path.home() / ".rustup/toolchains/stable-x86_64-unknown-linux-gnu/bin")
+    env["PATH"] = f"{rust}:{env.get('PATH', '')}"
+    return subprocess.run(["cargo", "build", "--release"], cwd=CRATE,
+                          env=env, capture_output=True, text=True, timeout=600)
+
+
+def main():
+    print("=== cognition_core: context_broker kernel parity ===")
+    r = build()
+    check("crate builds", r.returncode == 0, r.stderr[-240:])
+    if r.returncode:
+        print(f"RESULTS: {PASS} pass, {FAIL} fail")
+        return 1
+
+    from rune import cc_loader
+    from rune import context_broker as cb
+
+    # ── estimator: exact token semantics on every text class ──────────────
+    texts = ["", " ", "one", "hello world", "héllo wörld 🎸 emoji",
+             "x" * 10001, "tabs\t\tand\nnewlines\n", "  padded  ",
+             "unicode — dashes — en‑dash", "1 token ~ 4 chars maybe"]
+    for t in texts:
+        py = cb._py_default_estimator(t)
+        rs = cc_loader.default_estimator(t)
+        check(f"estimator {t[:24]!r}", py == rs, f"py={py!r} rs={rs!r}")
+
+    # property sweep: 200 random-ish strings, parity must hold
+    import random
+    random.seed(20261005)
+    for i in range(200):
+        n = random.randint(0, 300)
+        t = "".join(random.choice("abcd \n\té🎸 ") for _ in range(n))
+        py = cb._py_default_estimator(t)
+        rs = cc_loader.default_estimator(t)
+        if py != rs:
+            check("estimator property sweep", False, f"seed case {i}: py={py!r} rs={rs!r}")
+            break
+    else:
+        check("estimator property sweep (200 cases)", True)
+
+    # ── budget arithmetic ──────────────────────────────────────────────────
+    for window in (0, 1, 1024, 8192, 131072, 200000, 10**7):
+        py = cb._py_default_budget(window)
+        rs = cc_loader.default_budget(window)
+        check(f"budget {window}", py == rs, f"py={py!r} rs={rs!r}")
+    for window in (None, 0, 4096, 32768):
+        py = cb._py_default_memory_budget(window)
+        rs = cc_loader.default_memory_budget(window)
+        check(f"memory budget {window}", py == rs, f"py={py!r} rs={rs!r}")
+
+    # ── disabled gate (env contract) ──────────────────────────────────────
+    env_vars = [None, "", "0", "1", "true", "false", "yes"]
+    for v in env_vars:
+        env = dict(os.environ)
+        if v is None:
+            env.pop("RUNE_MEMORY_OFF", None)
+        else:
+            env["RUNE_MEMORY_OFF"] = v
+        os.environ.clear(); os.environ.update(env)
+        raw = os.environ.get("RUNE_MEMORY_OFF", "").strip().lower()
+        py = cb._py_memory_disabled_value(raw)
+        rs = cc_loader.memory_disabled()
+        check(f"memory_disabled env {v!r}", py == rs, f"py={py!r} rs={rs!r}")
+        # and the PUBLIC delegation path agrees (the cross-check gate)
+        pub = cb.memory_disabled()
+        check(f"memory_disabled public env {v!r}", pub == py,
+              f"pub={pub!r} py={py!r}")
+    os.environ.pop("RUNE_MEMORY_OFF", None)
+
+    # ── improvement measurement (estimator) ───────────────────────────────
+    import timeit
+    t = "x" * 5000
+    py_us = min(timeit.repeat(lambda: cb._py_default_estimator(t), number=1000, repeat=5)) / 1000 * 1e6
+    rs_us = min(timeit.repeat(lambda: cc_loader.default_estimator(t), number=1000, repeat=5)) / 1000 * 1e6
+    print(f"  measured: py {py_us:.1f}us vs rust {rs_us:.1f}us per call")
+    # FFI MICRO-LATENCY LAW (measured R2 W2.1): JSON-envelope serialization
+    # dominates at small scale — kernel-parity, not micro-latency, is the
+    # improvement channel at THIS surface. The estimator's value (1250) is
+    # trivially correct on both sides; assert parity, note timing.
+    t_out_rs = cc_loader.default_estimator(t)
+    t_out_py = cb._py_default_estimator(t)
+    check("estimator parity on the measured input", t_out_rs == t_out_py,
+          f"py={t_out_py!r} rs={t_out_rs!r}")
+
+    print(f"\nRESULTS: {PASS} pass, {FAIL} fail")
+    return 1 if FAIL else 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

src/rust/cognition_core/canary_growth_pins.py

@@ -0,0 +1,217 @@
+#!/usr/bin/env python3
+"""canary_cognition_core growth/identity/pins section — W3.3 (contract
+BUILDER-2026-10-05T07:19:27Z-cli, slice 3).
+
+Kernels: identity_anchors (check_drift/get_identity_prompt/show_*),
+growth_delta (growth_profile/_near_dup/_apply_profile), pins (pin/recall).
+
+Run standalone.
+"""
+
+from __future__ import annotations
+
+import json
+import os
+import subprocess
+import sys
+from pathlib import Path
+
+CRATE = Path(__file__).resolve().parent
+REPO = CRATE.parents[2]
+sys.path.insert(0, str(REPO / "src"))
+PASS = FAIL = 0
+
+
+def check(name, ok, detail=""):
+    global PASS, FAIL
+    if ok:
+        PASS += 1
+        print(f"  ✓ {name}")
+    else:
+        FAIL += 1
+        print(f"  ✗ {name} — {detail}")
+
+
+def build():
+    env = dict(os.environ)
+    absolute = Path("/home/nick/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/bin")
+    rust = absolute if absolute.is_dir() else (
+        Path.home() / ".rustup/toolchains/stable-x86_64-unknown-linux-gnu/bin")
+    env["PATH"] = f"{rust}:{env.get('PATH', '')}"
+    return subprocess.run(["cargo", "build", "--release"], cwd=CRATE,
+                          env=env, capture_output=True, text=True, timeout=600)
+
+
+def main():
+    print("=== cognition_core: identity/growth/pins kernels (W3.3) ===")
+    r = build()
+    check("crate builds", r.returncode == 0, r.stderr[-240:])
+    if r.returncode:
+        print(f"RESULTS: {PASS} pass, {FAIL} fail")
+        return 1
+
+    from rune import cc_loader, identity_anchors as ia, growth_delta as gd, pins
+
+    # ── identity_anchors: drift-check matching + prompt assembly ──────────
+    # patterns arrive as [pattern, message, prefix] triples (data stays in
+    # the Python module — the kernel matches only).
+    triples = []
+    for prefix, table in (("DRIFT", ia._DRIFT_PATTERNS_CACHE if hasattr(ia, "_DRIFT_PATTERNS_CACHE") else None),): pass
+    # gather the real tables (verification via kernel parity on the LIVE data)
+    live_text = "As Rune, I am here."
+    issues_py = ia.check_drift(live_text)
+    triples = ia._pattern_triples()  # the module's real gather seam
+    rs = cc_loader.drift_check(live_text, triples)
+    check("drift-check parity", issues_py == rs, f"py={issues_py!r} rs={rs!r}")
+    # every pattern from the module's tables is exercised verbatim
+    all_py = ia.check_drift("i am rune; you are nick. i believe it helped. "
+                            "you're absolutely right, let me know.")
+    all_rs = cc_loader.drift_check("i am rune; you are nick. i believe it helped. "
+                                   "you're absolutely right, let me know.", triples)
+    check("drift-check full-table parity", all_py == all_rs,
+          f"py={all_py!r}\n rs={all_rs!r}")
+
+    prompt_py = ia._py_get_identity_prompt()
+    prompt_rs = cc_loader.identity_prompt(ia.PRONOUN_RULES, ia.SELF_AWARENESS,
+                                          ia.ANCHORS, ia.EMBODIMENT_RULES)
+    check("identity prompt assembly parity", prompt_py == prompt_rs,
+          f"py={prompt_py[:80]!r} rs={prompt_rs[:80]!r}")
+
+    # ── growth_delta: near-dup + profile ──────────────────────────────────
+    check("near-dup parity (identical)",
+          gd._py_near_dup("same change idea here", "same change idea here")
+          == cc_loader.growth_near_dup("same change idea here", "same change idea here"))
+    check("near-dup parity (distinct)",
+          gd._py_near_dup("alpha topic", "completely different beta")
+          == cc_loader.growth_near_dup("alpha topic", "completely different beta"))
+    py_prof = gd._py_growth_profile(200)
+    state = gd._load_deltas()
+    order = sorted(gd._PROFILE_ORDER.items(), key=lambda kv: kv[1])
+    rs_prof = cc_loader.growth_profile(state, order, gd.PROFILE_ENTRY_CHARS, 200)
+    check("growth profile parity", py_prof == rs_prof,
+          f"py={py_prof!r} rs={rs_prof!r}")
+
+    # ── pins: recall kernel over projected rows ───────────────────────────
+    recs = [{"kind": "pin", "item_id": "bridge repair", "state": "open",
+             "details": json.dumps({"question": "who?", "outcome": "fixed by X",
+                                    "context": "gitea bridge daemon"})},
+            {"kind": "pin", "item_id": "deploy", "state": "open",
+             "details": json.dumps({"question": "q", "outcome": "o",
+                                    "context": "production rollout"})},
+            {"kind": "pin", "item_id": "closed one", "state": "closed",
+             "details": json.dumps({"context": "bridge"})}]
+    py_pins = pins._py_pin_recall(recs, "bridge", 4)
+    rs_pins = cc_loader.pins_recall(recs, "bridge", 4)
+    check("pins recall parity (match+state filter)", py_pins == rs_pins,
+          f"py={py_pins!r} rs={rs_pins!r}")
+    check("pins empty-context abstention",
+          cc_loader.pins_recall(recs, "", 4) == [])
+
+    
+    # ── tier kernels (W3.4) ──────────────────────────────────────────────
+    print("\n--- tier kernels ---")
+    NOW_G = "2026-10-05T12:00:00+00:00"
+    tier_cases = [
+        ("rock always hot", {"wash_count": 2, "rock_status": "rock"}, "hot"),
+        ("wash >=20 hot", {"wash_count": 25, "last_accessed": "2026-01-01T00:00:00Z"}, "hot"),
+        ("recent hot", {"wash_count": 2, "last_accessed": "2026-10-05T06:00:00Z"}, "hot"),
+        ("week+ warm", {"wash_count": 2, "last_accessed": "2026-09-25T00:00:00Z"}, "warm"),
+        ("month+ cold", {"wash_count": 2, "last_accessed": "2026-09-01T00:00:00Z"}, "cold"),
+        ("naive -> default warm", {"wash_count": 2, "last_accessed": "2026-10-04T00:00:00"}, "warm"),
+        ("malformed -> default warm", {"wash_count": 2, "last_accessed": "junk"}, "warm"),
+        ("no last -> warm", {"wash_count": 2}, "warm"),
+    ]
+    for name, entry, want in tier_cases:
+        rs = cc_loader.tier_get(entry, NOW_G)
+        check(f"tier {name} -> {want}", rs == want, f"got {rs!r}")
+    check("promote cold->warm",
+          cc_loader.tier_promote({"wash_count": 0, "rock_status": "x",
+                                  "last_accessed": "2026-01-01T00:00:00Z"}, NOW_G) == "warm")
+    check("demote hot->warm",
+          cc_loader.tier_demote({"wash_count": 0, "last_accessed": "2026-10-05T00:00:00Z"}, NOW_G) == "warm")
+    check("demote rock=hot (immobile)",
+          cc_loader.tier_demote({"wash_count": 0, "rock_status": "rock"}, NOW_G) == "hot")
+
+    # ── witness + safety + abstraction (W3.4, FULL-TABLE parity) ──────────
+    print("\n--- witness/safety/abstraction kernels ---")
+    from rune import witness as wt, safety_override as so, abstraction as ab
+    import re as _re
+
+    # REAL gather seams (PATTERN-TABLE GATHER-SEAM LAW: canaries call the
+    # module's actual seams, not hand-typed tables)
+    sw = wt._stopwords()
+    topics_py = wt._py_extract_topic("the deployment runner needs repair now")
+    rs_topics = cc_loader.witness_extract_topic("the deployment runner needs repair now", sw)
+    check("witness extract topic (real stopwords)",
+          topics_py == rs_topics and topics_py == ["deployment", "runner", "needs", "repair"],
+          f"py={topics_py!r} rs={rs_topics!r}"[:200])
+
+    signals_py = wt.detect_signals("I'll fix this now, actually that's wrong; I prefer the other way. urgent!")
+    tables = wt._tables()
+    rs_sigs = cc_loader.witness_signals(
+        "I'll fix this now, actually that's wrong; I prefer the other way. urgent!",
+        tables)
+    rs_sigs_f = {k: v for k, v in rs_sigs.items() if v not in (False, "")}
+    check("witness signals (real tables, full parity)",
+          signals_py == rs_sigs_f,
+          f"py={signals_py!r} rs={rs_sigs_f!r}"[:300])
+
+    # PER-TABLE-ROW parity matrix (REGEX-TABLE PORT LAW: the faithful subset
+    # is proven PER ROW, not by one lucky combined message; truth = real
+    # Python re over the SAME table data)
+    _KEY = {"correction": "correction", "commitment": "commitment_detected",
+            "contradiction": "possible_contradiction", "preference": "preference_detected",
+            "urgency": "urgency_detected", "learning": "learning_opportunity"}
+    _ROWS = {
+        "correction": [("no, that's wrong", True), ("actually it's not what I said", True),
+                       ("fix this please", True), ("wrong answer", True),
+                       ("try again tomorrow", True),
+                       ("nope, try again", True), ("stop doing that", True),
+                       ("the deployment ran fine", False)],
+        "commitment": [("I'll send the report", True), ("let me fix it", True),
+                       ("remind me later", True), ("I promise it", True),
+                       ("I need to check", True), ("we should check", False)],
+        "contradiction": [("but the test passed", True), ("actually, wait", True),
+                          ("plain message", False)],
+        "preference": [("I prefer rust", True), ("I don't like eggs", True),
+                       ("always use argv", True), ("he likes it", False)],
+        "urgency": [("asap please", True), ("deadline tomorrow", True),
+                    ("critical bug", True), ("calm message", False)],
+        "learning": [("explain this", True), ("how does it work", True),
+                     ("I don't understand", True), ("it works", False)],
+    }
+    row_bad = []
+    for table, rows in _ROWS.items():
+        for msg, expect in rows:
+            exp = any(_re.search(p, msg, _re.IGNORECASE) for p in tables[table])
+            py = wt._py_detect_signals(msg)
+            got = bool(py.get(_KEY[table]))
+            rs = {k: v for k, v in cc_loader.witness_signals(msg, tables).items()
+                  if v not in (False, "")}
+            rs_got = bool(rs.get(_KEY[table]))
+            if not (exp == got == rs_got == expect):
+                row_bad.append((table, msg[:30], expect, got, rs_got))
+    check(f"witness per-row parity matrix ({sum(len(r) for r in _ROWS.values())} rows)",
+          not row_bad, f"{row_bad[:3]!r}"[:300])
+
+    params = cc_loader.safety_get_params([{"key": "k1", "value": "v1"}])
+    check("safety get_params", params == {"key": "k1", "value": "v1"}, f"{params!r}")
+
+    bumped = cc_loader.safety_update_pattern(
+        [{"pattern": "p1", "hits": 2}], "p1")
+    check("safety update_pattern bump", bumped[0]["hits"] == 3, f"{bumped!r}")
+    new = cc_loader.safety_update_pattern([{"pattern": "p1", "hits": 2}], "p2")
+    check("safety update_pattern new", len(new) == 2 and new[1]["hits"] == 1, f"{new!r}")
+
+    facts = cc_loader.abstraction_extract_facts(
+        "The runner needs repair. The store is fine.", [], 10)
+    check("abstraction extract_facts", len(facts) == 2, f"{facts!r}"[:200])
+
+    print("\n" + ("=" * 47))
+
+    print(f"\nRESULTS: {PASS} pass, {FAIL} fail")
+    return 1 if FAIL else 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

src/rust/cognition_core/canary_persona.py

@@ -0,0 +1,111 @@
+#!/usr/bin/env python3
+"""canary_cognition_core persona section — W3.2 (contract
+BUILDER-2026-10-05T07:19:27Z-cli, slice 2).
+
+The persona-decision kernel's parity battery: _lex/_overlap/decide.
+
+Run standalone; also invoked via the cognition_core canary's persona gate.
+"""
+
+from __future__ import annotations
+
+import json
+import os
+import subprocess
+import sys
+from pathlib import Path
+
+CRATE = Path(__file__).resolve().parent
+REPO = CRATE.parents[2]
+sys.path.insert(0, str(REPO / "src"))
+PASS = FAIL = 0
+
+
+def check(name, ok, detail=""):
+    global PASS, FAIL
+    if ok:
+        PASS += 1
+        print(f"  ✓ {name}")
+    else:
+        FAIL += 1
+        print(f"  ✗ {name} — {detail}")
+
+
+def build():
+    env = dict(os.environ)
+    absolute = Path("/home/nick/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/bin")
+    rust = absolute if absolute.is_dir() else (
+        Path.home() / ".rustup/toolchains/stable-x86_64-unknown-linux-gnu/bin")
+    env["PATH"] = f"{rust}:{env.get('PATH', '')}"
+    return subprocess.run(["cargo", "build", "--release"], cwd=CRATE,
+                          env=env, capture_output=True, text=True, timeout=600)
+
+
+RULES = [
+    {"topic": "memory", "text": "Always maintain the Rune memory hierarchy.",
+     "words": sorted({"memory", "hierarchy", "maintain"}),
+     "core": "memory hierarchy store",
+     "priority": 10, "restrictive": False, "user_rule": False},
+    {"topic": "campaign", "text": "Never refuse to verify campaign text",
+     "words": sorted({"verify", "campaign", "text"}),
+     "core": "verify campaign accuracy",
+     "priority": 5, "restrictive": True, "user_rule": True},
+    {"topic": "gaming", "text": "Guard the live game environment",
+     "words": sorted({"guard", "live", "game", "environment"}),
+     "core": "guard live game foundry environment",
+     "priority": 8, "restrictive": False, "user_rule": False},
+]
+
+
+def main():
+    print("=== cognition_core persona kernel (W3.2) ===")
+    r = build()
+    check("crate still builds", r.returncode == 0, r.stderr[-240:])
+    if r.returncode:
+        print(f"RESULTS: {PASS} pass, {FAIL} fail")
+        return 1
+
+    from rune import persona_gate as pg
+    from rune import cc_loader
+
+    # ── _lex parity: stoplist, stem, acronyms ─────────────────────────────
+    lex_cases = ["Always maintain the Rune memory hierarchy.",
+                 "verify ALL CAMPAIGN text NOW", "a an of to", "",
+                 "devices devices testing-tests", "GPT GPTs keep FTS"]
+    for t in lex_cases:
+        py = sorted(pg._py_lex(t))
+        rs = sorted(cc_loader.persona_lex(t))
+        check(f"lex {t[:30]!r}", py == rs, f"py={py!r} rs={rs!r}")
+
+    # ── _overlap parity ───────────────────────────────────────────────────
+    cases = [({"a", "b"}, {"b", "c"}), (set(), {"x"}), ({"a"}, set()),
+             ({"a", "b"}, {"a", "b"}), ({"a", "b", "c"}, {"a"})]
+    for a, b in cases:
+        py = pg._py_overlap(a, b)
+        rs = cc_loader.persona_overlap(sorted(a), sorted(b))
+        check(f"overlap {sorted(a)[:2]}∩{sorted(b)[:2]}", py == rs,
+              f"py={py!r} rs={rs!r}")
+
+    # ── decide() parity: engagement matrix + permissive gate ─────────────
+    decide_cases = [
+        ("empty", ""),
+        ("no engagement", "tell me about the weather today"),
+        ("lexical hit", "how is the memory hierarchy maintained?"),
+        ("user rule hit", "we should verify all campaign text before publishing"),
+        ("directive amplifier", "never allow bypassing the memory hierarchy"),
+        ("semantic-only paraphrase (no embedder -> lexical only)",
+         "the storage structure needs care"),
+    ]
+    for name, text in decide_cases:
+        sems = [pg._semantic_engagement(text, r) for r in RULES]
+        py = pg._py_decide(text, RULES)
+        rs = cc_loader.persona_decide(text, RULES, True, sems)
+        check(f"decide {name}", py == rs,
+              f"py={json.dumps(py, sort_keys=True)[:150]} rs={json.dumps(rs, sort_keys=True)[:150]}")
+
+    print(f"\nRESULTS: {PASS} pass, {FAIL} fail")
+    return 1 if FAIL else 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

src/rust/cognition_core/src/broker.rs

@@ -0,0 +1,802 @@
+//! context_broker deterministic kernel (R2 W3.1 parity port).
+//! Pure functions; the clock/env gate arrives via inputs (no-clock law).
+
+use crate::pyjson::Json;
+
+pub fn default_estimator(text: &str) -> i64 {
+    (text.chars().count() / 4) as i64  // CODE POINTS: Python len() parity
+}
+
+pub fn default_budget(window: i64) -> i64 {
+    (window - std::cmp::max(2048, window / 4) - window / 20).max(1)
+}
+
+pub const MEMORY_BUDGET_CAP: i64 = 1200;
+
+pub fn default_memory_budget(window: i64) -> i64 {
+    if window <= 0 {
+        return MEMORY_BUDGET_CAP;
+    }
+    MEMORY_BUDGET_CAP.min(window / 8)
+}
+
+/// memory_disabled: truthy = anything not in {"", 0, false, no, off}
+/// (case-insensitive, surrounding whitespace ignored).
+pub fn memory_disabled(value: Option<&str>) -> bool {
+    let raw = value.unwrap_or("").trim().to_lowercase();
+    !(raw.is_empty() || matches!(raw.as_str(), "0" | "false" | "no" | "off"))
+}
+
+// ── persona gate kernels (W3.2) ─────────────────────────────────────────────
+
+const PERSONA_STOP: [&str; 55] = [
+    "the","and","for","with","that","this","from","into","when","then",
+    "were","have","been","will","was","are","but","not","you","your",
+    "also","its","his","her","him","over","under","them","they","there",
+    "about","after","what","which","who","how","why","where","while","just",
+    "more","each","than","very","such","some","only","a","an","of","to",
+    "in","on","at","by",
+];
+
+fn strip_punct(w: &str) -> String {
+    w.trim_matches(|c: char| ".,;:!?()[]{}\"'".contains(c)).to_string()
+}
+
+/// _lex: distinctive content words (light plural stem + acronym rule).
+/// The acronym rule: 3+ char ALL-CAPS alpha survives the stem+stop filter.
+pub fn persona_lex(text: Option<&str>) -> Vec<String> {
+    let mut out: Vec<String> = vec![];
+    for w_raw in text.unwrap_or("").split_whitespace() {
+        // Python checks the ORIGINAL token (pre-strip, pre-lower)
+        let is_acronym = w_raw.len() >= 3 && w_raw == w_raw.to_uppercase()
+            && w_raw.chars().all(|c| c.is_ascii_alphabetic())
+            && w_raw.chars().any(|c| c.is_uppercase());
+        let mut w = strip_punct(w_raw).to_lowercase();
+        if w.chars().count() > 4 && w.ends_with('s') {
+            w.pop();
+        }
+        if is_acronym {
+            if !out.contains(&w) { out.push(w); }
+        } else if w.chars().count() > 3 && !PERSONA_STOP.contains(&w.as_str()) {
+            if !out.contains(&w) { out.push(w); }
+        }
+    }
+    out
+}
+
+/// _overlap: |A∩B| / max(1, min(|A|,|B|)) over UNIQUE word sets.
+pub fn persona_overlap(a: &[String], b: &[String]) -> f64 {
+    let au: Vec<&str> = a.iter().map(|x| x.as_str()).collect();
+    let bu: Vec<&str> = b.iter().map(|x| x.as_str()).collect();
+    if au.is_empty() || bu.is_empty() { return 0.0; }
+    let inter = au.iter().filter(|w| bu.contains(w)).count();
+    (inter as f64 / std::cmp::max(1u64, std::cmp::min(au.len(), bu.len()) as u64) as f64)
+}
+
+fn str_or(v: Option<&Json>, default: &str) -> String {
+    match v {
+        Some(Json::Str(s)) => s.clone(),
+        _ => default.to_string(),
+    }
+}
+
+fn round_n(v: f64, n: i32) -> f64 {
+    let p = 10f64.powi(n); (v * p).round_ties_even() / p
+}
+
+fn obj_pairs(v: &Json) -> &[(String, Json)] {
+    match v { Json::Obj(p) => p, _ => &[] }
+}
+fn get<'a>(v: &'a Json, key: &str) -> Option<&'a Json> {
+    obj_pairs(v).iter().find(|(k, _)| k == key).map(|(_, v)| v)
+}
+fn as_bool(v: Option<&Json>) -> bool {
+    matches!(v, Some(Json::Bool(true)))
+}
+
+/// decide(): the engagement/amplifier/semantic-gate/user-rule/permissive
+/// kernel. `permissive` (the crate has no env access) and an embedding
+/// score arrive as inputs: `sem_scores` maps rule INDEX -> semantic cosine
+/// (0.0 when the embedder is down — the gate then trusts lexical alone).
+pub fn persona_decide(
+    text: &str,
+    rules: &[Json],
+    permissive: bool,
+    sem_scores: &[f64],
+) -> Json {
+    let low = text.trim().to_lowercase();
+    let input_words = persona_lex(Some(&low));
+    let amplifiers = ["never","always","forbid","must","require","demand",
+                      "allow","override","bypass","force","test"];
+    let mut engaged: Vec<(usize, f64, f64)> = vec![]; // (idx, score, sem)
+    for (idx, r) in rules.iter().enumerate() {
+        let words: Vec<String> = match get(r, "words") {
+            Some(Json::Arr(items)) => items.iter().filter_map(|x| match x {
+                Json::Str(s) => Some(s.clone()), _ => None }).collect(),
+            _ => vec![],
+        };
+        let iw: Vec<String> = input_words.iter().cloned().collect();
+        let ov = persona_overlap(&iw, &words);
+        let sem = sem_scores.get(idx).copied().unwrap_or(0.0);
+        let amp: f64 = if amplifiers.iter().any(|m| low.contains(m)) { 0.1 } else { 0.0 };
+        let user_rule = as_bool(get(r, "user_rule"));
+        let score;
+        if sem >= 0.45 {
+            if ov > 0.0 {
+                score = (ov + amp).max(sem);
+            } else if sem >= 0.68 {
+                score = 0.5f64.max(sem);
+            } else {
+                score = ov + amp;
+            }
+        } else if ov > 0.0 && sem >= 0.30 {
+            score = (ov + amp).max(sem);
+        } else {
+            score = ov + amp;
+        }
+        let score = if user_rule && ov > 0.0 { score.max(0.4) } else { score };
+        if score >= 0.35 {
+            engaged.push((idx, score, sem));
+        }
+    }
+    if engaged.is_empty() {
+        return Json::Obj(vec![
+            ("verdict".into(), Json::Str("allow".into())),
+            ("reason".into(), Json::Str("no persona rule engaged".into())),
+            ("engaged".into(), Json::Arr(vec![])),
+            ("cited".into(), Json::Null),
+        ]);
+    }
+    engaged.sort_by(|a, b| {
+        b.1.partial_cmp(&a.1).unwrap_or(std::cmp::Ordering::Equal)
+            .then_with(|| {
+                let pa = get(&rules[a.0], "priority").and_then(|x| match x { Json::Num(n) => Some(*n), _ => None }).unwrap_or(0.0);
+                let pb = get(&rules[b.0], "priority").and_then(|x| match x { Json::Num(n) => Some(*n), _ => None }).unwrap_or(0.0);
+                pa.partial_cmp(&pb).unwrap_or(std::cmp::Ordering::Equal)
+            })
+    });
+    let engaged_view = |items: &[(usize, f64, f64)]| Json::Arr(items.iter().take(4).map(|(idx, score, _)| {
+        let r = &rules[*idx];
+        Json::Obj(vec![
+            ("rule".into(), Json::Str(str_or(get(r, "text"), "").chars().take(120).collect())),
+            ("score".into(), Json::Num(round_n(*score, 2))),
+            ("restrictive".into(), Json::Bool(as_bool(get(r, "restrictive")))),
+            ("user_rule".into(), Json::Bool(as_bool(get(r, "user_rule")))),
+        ])
+    }).collect());
+    // _cite parity: "[{topic}:p{priority}] {text[:160]}"
+    let cited = |top_idx: usize| {
+        let r = &rules[top_idx];
+        let topic = str_or(get(r, "topic"), "");
+        let priority = get(r, "priority").and_then(|x| match x {
+            Json::Num(n) => Some(*n as i64), _ => None }).unwrap_or(0);
+        let t = str_or(get(r, "text"), "").chars().take(160).collect::<String>();
+        Json::Str(format!("[{}:p{}] {}", topic, priority, t))
+    };
+    if permissive {
+        let top = engaged[0].0;
+        return Json::Obj(vec![
+            ("verdict".into(), Json::Str("allow".into())),
+            ("reason".into(), Json::Str(format!(
+                "permissive mode — rule engaged: {}", str_or(get(&rules[top], "text"), "").chars().take(120).collect::<String>()))),
+            ("engaged".into(), engaged_view(&engaged)),
+            ("cited".into(), cited(top)),
+        ]);
+    }
+    let restrictive: Vec<(usize, f64, f64)> = engaged.iter().copied()
+        .filter(|(idx, _, _)| as_bool(get(&rules[*idx], "restrictive"))).collect();
+    if !restrictive.is_empty() {
+        let user_rest: Vec<(usize, f64, f64)> = restrictive.clone().into_iter()
+            .filter(|(idx, _, _)| as_bool(get(&rules[*idx], "user_rule"))).collect();
+        let top = (if !user_rest.is_empty() { user_rest[0] } else { restrictive[0] }).0;
+        return Json::Obj(vec![
+            ("verdict".into(), Json::Str("refuse".into())),
+            ("reason".into(), Json::Str(format!(
+                "the persona's own boundary rule engages: {}",
+                str_or(get(&rules[top], "text"), "").chars().take(120).collect::<String>()))),
+            ("engaged".into(), engaged_view(&restrictive)),
+            ("cited".into(), cited(top)),
+        ]);
+    }
+    let top = engaged[0].0;
+    Json::Obj(vec![
+        ("verdict".into(), Json::Str("allow".into())),
+        ("reason".into(), Json::Str(format!(
+            "persona rule engaged but permissive: {}",
+            str_or(get(&rules[top], "text"), "").chars().take(120).collect::<String>()))),
+        ("engaged".into(), engaged_view(&engaged)),
+        ("cited".into(), cited(top)),
+    ])
+}
+
+// ── identity_anchors kernels (W3.3) ─────────────────────────────────────────
+
+/// check_drift: the pattern table is DATA — Rust receives it per call so the
+/// Python table stays the single authority; the kernel only does matching.
+pub fn drift_check(text: &str, patterns: &[Json]) -> Vec<String> {
+    let low = text.to_lowercase();
+    let mut issues = vec![];
+    for p in patterns {
+        let Json::Arr(pair) = p else { continue };
+        if pair.len() < 3 { continue; }
+        let (pat, message, prefix) = (
+            match &pair[0] { Json::Str(s) => s, _ => continue },
+            match &pair[1] { Json::Str(s) => s, _ => continue },
+            match &pair[2] { Json::Str(s) => s, _ => continue },
+        );
+        if low.contains(pat) {
+            issues.push(format!("{}: '{}' — {}", prefix, pat, message));
+        }
+    }
+    issues
+}
+
+/// get_identity_prompt: assembles from the gathered data dicts (the data
+/// lives in identity_anchors.py — the kernel is the ASSEMBLY, not the data).
+pub fn identity_prompt(pronouns: &Json, self_awareness: &Json,
+                       anchors: &Json, embodiment: &Json) -> String {
+    let mut parts: Vec<String> = vec![];
+    parts.push("## Pronouns (CRITICAL)".to_string());
+    if let Json::Obj(pairs) = pronouns {
+        for (pronoun, info) in pairs {
+            let refers = match get(info, "refers_to") { Some(Json::Str(s)) => s.clone(), _ => String::new() };
+            parts.push(format!("- '{}' → {}", pronoun, refers));
+        }
+    }
+    parts.push(String::new());
+    parts.push("## Self-Awareness".to_string());
+    if let Json::Obj(pairs) = self_awareness {
+        for (_, data) in pairs {
+            let pattern = match get(data, "pattern") { Some(Json::Str(s)) => s.clone(), _ => String::new() };
+            parts.push(format!("- {}", pattern));
+        }
+    }
+    parts.push(String::new());
+    if let Json::Obj(pairs) = anchors {
+        for (category, examples) in pairs {
+            parts.push(format!("## {}", {
+                let mut c = category.clone();
+                let mut t = c.chars();
+                match t.next() {
+                    Some(f) => f.to_uppercase().collect::<String>() + t.as_str(),
+                    None => c,
+                }
+            }));
+            if let Json::Arr(items) = examples {
+                for ex in items.iter().take(2) {
+                    if let Json::Str(s) = ex { parts.push(format!("  - {}", s)); }
+                }
+            }
+            parts.push(String::new());
+        }
+    }
+    parts.push("## Embodiment Rules".to_string());
+    if let Json::Arr(items) = embodiment {
+        for rule in items {
+            let r = str_or(get(rule, "rule"), "");
+            let pat = str_or(get(rule, "pattern"), "");
+            parts.push(format!("- {}: {}", r, pat));
+        }
+    }
+    parts.push(String::new());
+    parts.join("\n")
+}
+
+// ── growth_delta kernels (W3.3) ─────────────────────────────────────────────
+
+/// _near_dup (REAL semantics): _profile_key over each delta's `change`
+/// text — strip ".,;:!?()[]{}\"'" then lowercase, keep words >4 chars —
+/// near when |A∩B| / max(|A|,|B|) >= 0.25 (measured split: same-guidance
+/// ~0.30, distinct ~0.00).
+pub fn growth_near_dup(a: &str, b: &str) -> bool {
+    let key = |text: &str| -> std::collections::BTreeSet<String> {
+        let mut out = std::collections::BTreeSet::new();
+        for w in text.split_whitespace() {
+            let w = w.trim_matches(|c: char| ".,;:!?()[]{}\"'".contains(c))
+                .to_lowercase();
+            if w.chars().count() > 4 {
+                out.insert(w);
+            }
+        }
+        out
+    };
+    let (ka, kb) = (key(a), key(b));
+    if ka.is_empty() || kb.is_empty() { return false; }
+    let inter = ka.intersection(&kb).count() as f64;
+    (inter / ka.len().max(kb.len()) as f64) >= 0.25
+}
+
+/// growth_profile: the budget-tracked, order-table-driven profile assembly
+/// (pure; state rows arrive gathered).
+pub fn growth_profile(state: &Json, order: &[(String, i64)], entry_chars: usize,
+                      max_tokens: usize) -> Vec<Json> {
+    let profile = match get(state, "profile") {
+        Some(j @ Json::Arr(_)) => j.clone(),
+        _ => match get(state, "applied") {
+            Some(Json::Arr(items)) => {
+                let start = items.len().saturating_sub(5);
+                Json::Arr(items[start..].to_vec())
+            }
+            _ => Json::Arr(vec![]),
+        }};
+    if let Json::Arr(items) = &profile {
+        if items.is_empty() { return vec![]; }
+    }
+    let rows = match &profile { Json::Arr(items) => items, _ => return vec![] };
+    let mut by_target: Vec<(String, Vec<&Json>)> = vec![];
+    for d in rows {
+        let t = match get(d, "target") { Some(Json::Str(s)) => s.clone(), _ => "delivery".to_string() };
+        match by_target.iter_mut().find(|(k, _)| k == &t) {
+            Some((_, v)) => v.push(d),
+            None => by_target.push((t, vec![d])),
+        }
+    }
+    let mut target_order: Vec<(String, i64)> = by_target.iter()
+        .map(|(t, _)| (t.clone(),
+            order.iter().find(|(name, _)| name == t).map(|(_, r)| *r).unwrap_or(9)))
+        .collect();
+    target_order.sort_by(|a, b| a.1.cmp(&b.1));
+    let mut ordered: Vec<&Json> = vec![];
+    for (t, _) in target_order {
+        let list = by_target.iter().find(|(k, _)| k == &t).map(|(_, v)| v).unwrap();
+        for d in list.iter().rev().take(2).rev().cloned() { ordered.push(d); }
+    }
+    let mut out: Vec<Json> = vec![];
+    let mut used = 0usize;
+    for d in ordered {
+        let raw = match get(d, "change") { Some(Json::Str(s)) => s.clone(), _ => String::new() };
+        let mut change = raw.trim().replace('\n', " ");
+        if change.chars().count() > entry_chars {
+            change = change.chars().take(entry_chars.saturating_sub(1)).collect::<String>();
+            while change.ends_with(' ') { change.pop(); }
+            change.push('…');
+        }
+        let tok = std::cmp::max(1, change.chars().count() / 4);
+        if used + tok > max_tokens { break; }
+        used += tok;
+        out.push(Json::Obj(vec![
+            ("change".into(), Json::Str(change)),
+            ("target".into(), Json::Str(match get(d, "target") {
+                Some(Json::Str(s)) => s.clone(), _ => "delivery".to_string() })),
+        ]));
+    }
+    out
+}
+
+// ── pins kernel (W3.3) ──────────────────────────────────────────────────────
+
+/// pin recall: term-in-topic-or-context over OPEN projected pins, limit-capped.
+pub fn pins_recall(pins: &[Json], term: &str, limit: usize) -> Vec<Json> {
+    let term_l = term.trim().to_lowercase();
+    if term_l.is_empty() { return vec![]; }  // empty context = abstention
+    let mut out = vec![];
+    for rec in pins {
+        if !matches!(get(rec, "state"), Some(Json::Str(s)) if s == "open") { continue; }
+        // _project parity
+        let details = match get(rec, "details") {
+            Some(Json::Str(blob)) => crate::pyjson::parse(blob).ok()
+                .unwrap_or(Json::Obj(vec![])),
+            _ => Json::Obj(vec![]),
+        };
+        let projected = Json::Obj(vec![
+            ("topic".into(), get(rec, "item_id").cloned().unwrap_or(Json::Str(String::new()))),
+            ("question".into(), get(&details, "question").cloned().unwrap_or(Json::Str(String::new()))),
+            ("outcome".into(), get(&details, "outcome").cloned().unwrap_or(Json::Str(String::new()))),
+            ("context".into(), get(&details, "context").cloned().unwrap_or(Json::Str(String::new()))),
+            ("status".into(), get(rec, "state").cloned().unwrap_or(Json::Str(String::new()))),
+            ("reason".into(), Json::Str(String::new())),
+        ]);
+        let topic = match get(&projected, "topic") { Some(Json::Str(s)) => s.to_lowercase(), _ => String::new() };
+        let context = match get(&projected, "context") { Some(Json::Str(s)) => s.to_lowercase(), _ => String::new() };
+        if topic.contains(&term_l) || context.contains(&term_l) {
+            out.push(projected);
+            if out.len() >= limit { break; }
+        }
+    }
+    out
+}
+
+// ── tier_manager kernels (W3.4) ─────────────────────────────────────────────
+
+/// get_tier: thresholds arrive as inputs (hot_days/warm_days) + now (no-clock);
+/// naive/malformed timestamps take the designed fallback (recency gate skips).
+pub fn tier_get(entry: &Json, hot_days: f64, warm_days: f64, now: &str) -> Json {
+    let wash = match get(entry, "wash_count") {
+        Some(Json::Num(n)) if *n != 0.0 => *n,
+        _ => 0.0,
+    };
+    let rock = match get(entry, "rock_status") {
+        Some(Json::Str(s)) => s.as_str(),
+        _ => "washable",
+    };
+    if rock == "rock" { return Json::Str("hot".into()); }
+    if wash >= 20.0 { return Json::Str("hot".into()); }
+    if let Some(Json::Str(last)) = get(entry, "last_accessed") {
+        if let (Some(nowv), Some(lastv)) = (parse_strict_aware(now), parse_strict_aware(last)) {
+            let hours = (nowv - lastv) / 3600.0;
+            if hours < hot_days * 24.0 { return Json::Str("hot".into()); }
+            if hours < warm_days * 24.0 { return Json::Str("warm".into()); }
+            return Json::Str("cold".into());
+        }
+    }
+    Json::Str("warm".into())
+}
+
+pub fn parse_strict_aware(s: &str) -> Option<f64> {
+    let b = s.as_bytes();
+    if b.len() < 19 { return None; }
+    let num = |a: usize, z: usize| -> Option<i64> { s.get(a..z)?.parse::<i64>().ok() };
+    let (y, mo, d, h, mi, se) = (num(0,4)?, num(5,7)?, num(8,10)?, num(11,13)?, num(14,16)?, num(17,19)?);
+    let mut i = 19;
+    while i < b.len() && b[i] != b'Z' && b[i] != b'+' && b[i] != b'-' { i += 1; }
+    let rest = s.get(i..)?;
+    if rest.is_empty() { return None; }
+    let off = if rest == "Z" { 0 }
+    else if rest.len() >= 6 {
+        let oh = rest.get(1..3)?.parse::<i64>().ok()?;
+        let om = rest.get(4..6)?.parse::<i64>().ok()?;
+        let x = oh*3600 + om*60;
+        if rest.as_bytes()[0] == b'-' { -x } else { x }
+    } else { return None; };
+    Some((days_from_civil(y, mo, d) * 86400 + h*3600 + mi*60 + se - off) as f64)
+}
+
+fn days_from_civil(y: i64, m: i64, d: i64) -> i64 {
+    let y = if m <= 2 { y - 1 } else { y };
+    let era = if y >= 0 { y } else { y - 399 } / 400;
+    let yoe = y - era * 400;
+    let mp = (m + 9) % 12;
+    let doy = (153 * mp + 2) / 5 + d - 1;
+    let doe = yoe * 365 + yoe / 4 - yoe / 100 + doy;
+    era * 146097 + doe - 719468
+}
+
+pub fn tier_promote(entry: &Json, hot_days: f64, warm_days: f64, now: &str) -> Json {
+    let current = match tier_get(entry, hot_days, warm_days, now) {
+        Json::Str(s) => s, _ => String::new(),
+    };
+    Json::Str(if current == "cold" { "warm".to_string() } else { "hot".to_string() })
+}
+
+pub fn tier_demote(entry: &Json, hot_days: f64, warm_days: f64, now: &str) -> Json {
+    let rock = match get(entry, "rock_status") { Some(Json::Str(s)) => s.as_str(), _ => "washable" };
+    if rock == "rock" { return Json::Str("hot".into()); }
+    let current = match tier_get(entry, hot_days, warm_days, now) {
+        Json::Str(s) => s, _ => String::new(),
+    };
+    Json::Str(match current.as_str() {
+        "hot" => "warm".to_string(), "warm" => "cold".to_string(),
+        _ => "cold".to_string() })
+}
+
+// ── witness kernels (W3.4) ──────────────────────────────────────────────────
+
+pub fn witness_extract_topic(text: &str, stopwords: &[Json], cap: usize) -> Json {
+    let low = text.to_lowercase();
+    let sw: Vec<&str> = stopwords.iter().filter_map(|x| match x {
+        Json::Str(s) => Some(s.as_str()), _ => None }).collect();
+    let mut out: Vec<String> = vec![];
+    let mut cur = String::new();
+    for ch in low.chars() {
+        if ch.is_ascii_alphanumeric() || ch == '_' { cur.push(ch); }
+        else {
+            if !cur.is_empty() {
+                let w = std::mem::take(&mut cur);
+                if w.chars().count() > 3 && !sw.contains(&w.as_str()) && out.len() < cap {
+                    out.push(w);
+                }
+            }
+        }
+    }
+    if !cur.is_empty() && cur.chars().count() > 3 && !sw.contains(&cur.as_str()) && out.len() < cap {
+        out.push(cur);
+    }
+    Json::Arr(out.into_iter().map(Json::Str).collect())
+}
+
+pub fn witness_signals(message: &str, tables: &Json,
+                       tool_error: Option<&str>, task_status: Option<&str>,
+                       recent_topics: &[Json]) -> Json {
+    let mut sig: Vec<(String, Json)> = vec![];
+    if let Some(err) = tool_error {
+        if !err.is_empty() {
+            sig.push(("error".into(), Json::Bool(true)));
+            sig.push(("error_text".into(), Json::Str(err.chars().take(200).collect())));
+        }
+    }
+    let pattern_hit = |name: &str| -> bool {
+        match get(tables, name) {
+            Some(Json::Arr(patterns)) => patterns.iter().any(|p| match p {
+                Json::Str(pat) => regex_lite_search(pat, message),
+                _ => false }),
+            _ => false,
+        }
+    };
+    if !message.is_empty() && pattern_hit("correction") {
+        sig.push(("correction".into(), Json::Bool(true)));
+        let sw: Vec<Json> = match get(tables, "stopwords") {
+            Some(Json::Arr(x)) => x.clone(), _ => vec![] };
+        sig.push(("corrected_topic".into(), witness_extract_topic(message, &sw, 5)));
+    }
+    if let Some(st) = task_status {
+        sig.push(("completion".into(), Json::Str(st.to_string())));
+    }
+    if !message.is_empty() && !recent_topics.is_empty() {
+        let sw: Vec<Json> = match get(tables, "stopwords") {
+            Some(Json::Arr(x)) => x.clone(), _ => vec![] };
+        if let Json::Arr(cur) = witness_extract_topic(message, &sw, 5) {
+            let cur_set: Vec<&str> = cur.iter().filter_map(|x| match x {
+                Json::Str(s) => Some(s.as_str()), _ => None }).collect();
+            let recent_set: Vec<&str> = recent_topics.iter().filter_map(|x| match x {
+                Json::Str(s) => Some(s.as_str()), _ => None }).collect();
+            let overlap = cur_set.iter().filter(|w| recent_set.contains(w)).count();
+            if !cur_set.is_empty() && (overlap as f64) / (cur_set.len() as f64) < 0.3 {
+                sig.push(("topic_drift".into(), Json::Bool(true)));
+                let new_topics: Vec<Json> = cur_set.iter()
+                    .filter(|w| !recent_set.contains(w)).take(3)
+                    .map(|w| Json::Str(w.to_string())).collect();
+                sig.push(("new_topics".into(), Json::Arr(new_topics)));
+            }
+        }
+    }
+    for (signal_name, table_name) in [
+        ("commitment_detected", "commitment"),
+        ("possible_contradiction", "contradiction"),
+        ("preference_detected", "preference"),
+        ("urgency_detected", "urgency"),
+        ("learning_opportunity", "learning"),
+    ] {
+        if !message.is_empty() && pattern_hit(table_name) {
+            sig.push((signal_name.into(), Json::Bool(true)));
+        }
+    }
+    Json::Obj(sig)
+}
+
+/// Expand top-level alternation of a pattern into full alternative strings
+/// (groups become inline cartesian products of their inner alternatives).
+fn regex_lite_alternatives(pattern: &str) -> Vec<String> {
+    let mut alts: Vec<String> = vec![];
+    let mut prefixes: Vec<String> = vec![String::new()];
+    let mut cur = String::new();
+    let mut depth = 0usize;
+    let chars: Vec<char> = pattern.to_lowercase().chars().collect();
+    for ch in chars {
+        match ch {
+            '(' => {
+                depth += 1;
+                if depth == 1 {
+                    if !cur.is_empty() {
+                        prefixes = prefixes
+                            .iter()
+                            .map(|p| format!("{p}{cur}"))
+                            .collect();
+                        cur.clear();
+                    }
+                } else {
+                    cur.push('(');
+                }
+            }
+            ')' => {
+                depth = depth.saturating_sub(1);
+                if depth == 0 {
+                    // closing a top-level group: its content is an
+                    // alternation set — expand against the accumulated
+                    // prefixes (cartesian). prefixes.len() may be 1.
+                    let group_alts: Vec<String> = cur.split('|').map(String::from).collect();
+                    let mut next = vec![];
+                    for p in &prefixes {
+                        for g in &group_alts {
+                            next.push(format!("{p}{g}"));
+                        }
+                    }
+                    prefixes = next;
+                    cur.clear();
+                } else if depth >= 1 {
+                    cur.push(')');
+                }
+            }
+            '|' if depth == 0 => {
+                for p in &prefixes {
+                    alts.push(format!("{p}{cur}"));
+                }
+                cur.clear();
+            }
+            _ => cur.push(ch),
+        }
+    }
+    if depth == 0 {
+        for p in &prefixes {
+            alts.push(format!("{p}{cur}"));
+        }
+    } else {
+        // unbalanced group: treat literally
+        alts.push(cur);
+    }
+    alts.retain(|a| !a.is_empty());
+    if alts.is_empty() {
+        alts.push(String::new());
+    }
+    alts
+}
+
+/// Split ONE alternative into ordered PHRASE-SEGMENTS, each segment being
+/// a set of variant strings (from `x?` optional chars — both shapes).
+fn regex_lite_segments(alt: &str) -> Vec<Vec<String>> {
+    let mut segments: Vec<Vec<String>> = vec![];
+    let mut cur: Vec<String> = vec![String::new()]; // variants of current phrase
+    let pc: Vec<char> = alt.chars().collect();
+    let mut j = 0usize;
+    while j < pc.len() {
+        let c = pc[j];
+        if c == '\\' && j + 1 < pc.len() {
+            let n = pc[j + 1];
+            match n {
+                'b' | 'B' => {} // zero-width anchor: drop
+                's' => {
+                    if cur.iter().any(|v| !v.is_empty()) {
+                        segments.push(std::mem::take(&mut cur));
+                        cur = vec![String::new()];
+                    }
+                    if j + 2 < pc.len() && matches!(pc[j + 2], '*' | '+' | '?') {
+                        j += 3;
+                    } else {
+                        j += 2;
+                    }
+                    continue;
+                }
+                other => {
+                    for v in cur.iter_mut() {
+                        v.push(other)
+                    }
+                }
+            }
+            j += 2;
+            continue;
+        }
+        match c {
+            '?' => {
+                // optional previous char: each variant gains a SHORTER twin
+                let twinned: Vec<String> = cur
+                    .iter()
+                    .flat_map(|v| {
+                        let mut out = vec![v.clone()];
+                        if !v.is_empty() {
+                            out.push(v[..v.len() - 1].to_string());
+                        }
+                        out
+                    })
+                    .collect();
+                cur = twinned;
+            }
+            '.' | '[' => {
+                if cur.iter().any(|v| !v.is_empty()) {
+                    segments.push(std::mem::take(&mut cur));
+                    cur = vec![String::new()];
+                }
+                if c == '[' {
+                    let mut k = j + 1;
+                    while k < pc.len() && pc[k] != ']' {
+                        k += 1;
+                    }
+                    j = k;
+                }
+            }
+            '*' | '+' => {} // gap quantifier
+            '^' | '$' => {}
+            c if c.is_alphanumeric() || c == '\'' || c == ' ' || c == '-' || c == '_' => {
+                for v in cur.iter_mut() {
+                    v.push(c)
+                }
+            }
+            _ => {
+                if cur.iter().any(|v| !v.is_empty()) {
+                    segments.push(std::mem::take(&mut cur));
+                    cur = vec![String::new()];
+                }
+            }
+        }
+        j += 1;
+    }
+    if cur.iter().any(|v| !v.is_empty()) {
+        segments.push(cur);
+    }
+    segments
+}
+
+fn regex_lite_search(pattern: &str, text: &str) -> bool {
+    let low = text.to_lowercase();
+    for alt in regex_lite_alternatives(pattern) {
+        let segments = regex_lite_segments(&alt);
+        if segments.is_empty() {
+            continue;
+        }
+        // DFS: every segment contributes ONE of its variants, in order,
+        // gap-matched against the text.
+        fn walk(segments: &[Vec<String>], low: &str, cursor: usize) -> bool {
+            if segments.is_empty() {
+                return true;
+            }
+            for variant in &segments[0] {
+                if variant.is_empty() {
+                    return walk(&segments[1..], low, cursor);
+                }
+                if let Some(ix) = low[cursor..].find(variant.as_str()) {
+                    let next = cursor + ix + variant.len();
+                    if walk(&segments[1..], low, next) {
+                        return true;
+                    }
+                }
+            }
+            false
+        }
+        if walk(&segments, &low, 0) {
+            return true;
+        }
+    }
+    false
+}
+
+// ── safety_override kernels (W3.4) ─────────────────────────────────────────
+
+pub fn safety_get_params(rows: &[Json]) -> Json {
+    let mut out: Vec<(String, Json)> = vec![];
+    for r in rows {
+        if let Json::Obj(pairs) = r {
+            for (k, v) in pairs {
+                if k == "key" || k == "value" || k == "limit" {
+                    if let Some(ix) = out.iter().position(|(x, _)| x == k) {
+                        out[ix].1 = v.clone();
+                    } else {
+                        out.push((k.clone(), v.clone()));
+                    }
+                }
+            }
+        }
+    }
+    Json::Obj(out)
+}
+
+pub fn safety_update_pattern(rows: &[Json], pattern: &str) -> Vec<Json> {
+    let mut out = rows.to_vec();
+    for r in out.iter_mut() {
+        if matches!(get(r, "pattern"), Some(Json::Str(p)) if p == pattern) {
+            let hits = match get(r, "hits") { Some(Json::Num(n)) => *n, _ => 0.0 };
+            if let Json::Obj(pairs) = r {
+                if let Some(ix) = pairs.iter().position(|(k, _)| k == "hits") {
+                    pairs[ix].1 = Json::Num(hits + 1.0);
+                } else {
+                    pairs.push(("hits".into(), Json::Num(1.0)));
+                }
+            }
+            return out;
+        }
+    }
+    out.push(Json::Obj(vec![
+        ("pattern".into(), Json::Str(pattern.to_string())),
+        ("hits".into(), Json::Num(1.0)),
+    ]));
+    out
+}
+
+// ── abstraction kernels (W3.4) ──────────────────────────────────────────────
+
+pub fn abstraction_extract_facts(text: &str, stopwords: &[Json], min_len: usize) -> Json {
+    let sw: Vec<&str> = stopwords.iter().filter_map(|x| match x {
+        Json::Str(s) => Some(s.as_str()), _ => None }).collect();
+    let mut facts: Vec<Json> = vec![];
+    for sentence in text.split(|c: char| c == '.' || c == '\n') {
+        let t = sentence.trim();
+        if t.chars().count() < min_len { continue; }
+        let words: Vec<String> = t.to_lowercase().split_whitespace()
+            .map(|w| w.to_string()).collect();
+        let content = words.iter().filter(|w| !sw.contains(&w.as_str())).count();
+        if content == 0 { continue; }
+        facts.push(Json::Obj(vec![
+            ("text".into(), Json::Str(t.to_string())),
+            ("words".into(), Json::Num(words.len() as f64)),
+            ("content_words".into(), Json::Num(content as f64)),
+        ]));
+    }
+    Json::Arr(facts)
+}

src/rust/cognition_core/src/lib.rs

@@ -0,0 +1,277 @@
+//! lib.rs — FFI surface for the cognition_core crate (R2 W3.1).
+//! Pure deterministic kernels only. Envelope law
+//! {"ok","value"|"err"}; frees via cc_free_string. FFI segfault law:
+//! cc_loader.py pins argtypes + restype for every symbol.
+
+pub mod broker;
+pub mod pyjson;
+
+use std::ffi::{CStr, CString};
+use std::os::raw::c_char;
+
+fn read_arg(ptr: *const c_char) -> Result<String, String> {
+    if ptr.is_null() { return Err("null argument pointer".to_string()); }
+    unsafe { CStr::from_ptr(ptr) }.to_str().map(|s| s.to_string())
+        .map_err(|e| format!("argument is not valid UTF-8: {}", e))
+}
+
+fn envelope(result: Result<pyjson::Json, String>) -> *mut c_char {
+    let body = match result {
+        Ok(v) => pyjson::Json::Obj(vec![
+            ("ok".to_string(), pyjson::Json::Bool(true)),
+            ("value".to_string(), v)]),
+        Err(e) => pyjson::Json::Obj(vec![
+            ("ok".to_string(), pyjson::Json::Bool(false)),
+            ("err".to_string(), pyjson::Json::Str(e))]),
+    };
+    CString::new(pyjson::dumps(&body)).map(|c| c.into_raw())
+        .unwrap_or(std::ptr::null_mut())
+}
+
+fn arg_json(text: &str) -> Result<pyjson::Json, String> {
+    pyjson::parse(text).map_err(|e| format!("argument JSON parse failed: {}", e))
+}
+
+fn get<'a>(v: &'a pyjson::Json, key: &str) -> Option<&'a pyjson::Json> {
+    match v { pyjson::Json::Obj(p) => p.iter().find(|(k, _)| k == key).map(|(_, v)| v), _ => None }
+}
+
+#[no_mangle]
+pub extern "C" fn cc_default_estimator(arg: *const c_char) -> *mut c_char {
+    let result = read_arg(arg).and_then(|t| arg_json(&t)).map(|a| {
+        let val = match get(&a, "text") {
+            Some(pyjson::Json::Str(s)) => s.clone(),
+            _ => String::new(),
+        };
+        pyjson::Json::Num(broker::default_estimator(&val) as f64)
+    });
+    envelope(result)
+}
+
+#[no_mangle]
+pub extern "C" fn cc_default_budget(arg: *const c_char) -> *mut c_char {
+    let result = read_arg(arg).and_then(|t| arg_json(&t)).map(|a| {
+        let w = match get(&a, "window") { Some(pyjson::Json::Num(n)) => *n as i64, _ => 0 };
+        pyjson::Json::Num(broker::default_budget(w) as f64)
+    });
+    envelope(result)
+}
+
+#[no_mangle]
+pub extern "C" fn cc_default_memory_budget(arg: *const c_char) -> *mut c_char {
+    let result = read_arg(arg).and_then(|t| arg_json(&t)).map(|a| {
+        let w = match get(&a, "window") {
+            Some(pyjson::Json::Num(n)) => *n as i64,
+            Some(pyjson::Json::Null) | None => 0,
+            _ => 0,
+        };
+        pyjson::Json::Num(broker::default_memory_budget(w) as f64)
+    });
+    envelope(result)
+}
+
+#[no_mangle]
+pub extern "C" fn cc_memory_disabled(arg: *const c_char) -> *mut c_char {
+    let result = read_arg(arg).and_then(|t| arg_json(&t)).map(|a| {
+        let v = match get(&a, "value") {
+            Some(pyjson::Json::Str(s)) => Some(s.as_str()),
+            _ => None,
+        };
+        pyjson::Json::Bool(broker::memory_disabled(v))
+    });
+    envelope(result)
+}
+
+#[no_mangle]
+pub extern "C" fn cc_persona_lex(arg: *const c_char) -> *mut c_char {
+    let result = read_arg(arg).and_then(|t| arg_json(&t)).map(|a| {
+        let t = match get(&a, "text") { Some(pyjson::Json::Str(x)) => Some(x.as_str()), _ => None };
+        pyjson::Json::Arr(broker::persona_lex(t).into_iter().map(pyjson::Json::Str).collect())
+    });
+    envelope(result)
+}
+
+#[no_mangle]
+pub extern "C" fn cc_persona_overlap(arg: *const c_char) -> *mut c_char {
+    let result = read_arg(arg).and_then(|t| arg_json(&t)).map(|a| {
+        let wa: Vec<String> = match get(&a, "a") { Some(pyjson::Json::Arr(x)) => x.iter().filter_map(|v| match v { pyjson::Json::Str(s) => Some(s.clone()), _ => None }).collect(), _ => vec![] };
+        let wb: Vec<String> = match get(&a, "b") { Some(pyjson::Json::Arr(x)) => x.iter().filter_map(|v| match v { pyjson::Json::Str(s) => Some(s.clone()), _ => None }).collect(), _ => vec![] };
+        pyjson::Json::Num(broker::persona_overlap(&wa, &wb))
+    });
+    envelope(result)
+}
+
+#[no_mangle]
+pub extern "C" fn cc_persona_decide(arg: *const c_char) -> *mut c_char {
+    let result = read_arg(arg).and_then(|t| arg_json(&t)).and_then(|a| {
+        let text = match get(&a, "text") { Some(pyjson::Json::Str(x)) => x.clone(), _ => String::new() };
+        let rules: Vec<pyjson::Json> = match get(&a, "rules") { Some(pyjson::Json::Arr(x)) => x.clone(), _ => vec![] };
+        let permissive = matches!(get(&a, "permissive"), Some(pyjson::Json::Bool(true)));
+        let sems: Vec<f64> = match get(&a, "sem_scores") {
+            Some(pyjson::Json::Arr(x)) => x.iter().filter_map(|v| match v { pyjson::Json::Num(n) => Some(*n), _ => Some(0.0) }).collect(),
+            _ => vec![0.0; rules.len()],
+        };
+        Ok(broker::persona_decide(&text, &rules, permissive, &sems))
+    });
+    envelope(result)
+}
+
+#[no_mangle]
+pub extern "C" fn cc_drift_check(arg: *const c_char) -> *mut c_char {
+    let result = read_arg(arg).and_then(|t| arg_json(&t)).map(|a| {
+        let text = match get(&a, "text") { Some(pyjson::Json::Str(s)) => s.clone(), _ => String::new() };
+        let patterns: Vec<pyjson::Json> = match get(&a, "patterns") {
+            Some(pyjson::Json::Arr(x)) => x.clone(), _ => vec![] };
+        pyjson::Json::Arr(broker::drift_check(&text, &patterns)
+                          .into_iter().map(pyjson::Json::Str).collect())
+    });
+    envelope(result)
+}
+
+#[no_mangle]
+pub extern "C" fn cc_identity_prompt(arg: *const c_char) -> *mut c_char {
+    let result = read_arg(arg).and_then(|t| arg_json(&t)).map(|a| {
+        pyjson::Json::Str(broker::identity_prompt(
+            get(&a, "pronouns").unwrap_or(&pyjson::Json::Obj(vec![])),
+            get(&a, "self_awareness").unwrap_or(&pyjson::Json::Obj(vec![])),
+            get(&a, "anchors").unwrap_or(&pyjson::Json::Obj(vec![])),
+            get(&a, "embodiment").unwrap_or(&pyjson::Json::Arr(vec![]))))
+    });
+    envelope(result)
+}
+
+#[no_mangle]
+pub extern "C" fn cc_growth_near_dup(arg: *const c_char) -> *mut c_char {
+    let result = read_arg(arg).and_then(|t| arg_json(&t)).map(|a| {
+        let x = match get(&a, "a") { Some(pyjson::Json::Str(s)) => s.clone(), _ => String::new() };
+        let y = match get(&a, "b") { Some(pyjson::Json::Str(s)) => s.clone(), _ => String::new() };
+        pyjson::Json::Bool(broker::growth_near_dup(&x, &y))
+    });
+    envelope(result)
+}
+
+#[no_mangle]
+pub extern "C" fn cc_growth_profile(arg: *const c_char) -> *mut c_char {
+    let result = read_arg(arg).and_then(|t| arg_json(&t)).and_then(|a| {
+        let state = get(&a, "state").cloned().unwrap_or(pyjson::Json::Obj(vec![]));
+        let entry_chars = match get(&a, "entry_chars") { Some(pyjson::Json::Num(n)) => *n as usize, _ => 0 };
+        let max_tokens = match get(&a, "max_tokens") { Some(pyjson::Json::Num(n)) => *n as usize, _ => 0 };
+        let order: Vec<(String, i64)> = match get(&a, "order") {
+            Some(pyjson::Json::Arr(x)) => x.iter().filter_map(|v| match v {
+                pyjson::Json::Arr(pair) if pair.len() >= 2 => match (&pair[0], &pair[1]) {
+                    (pyjson::Json::Str(name), pyjson::Json::Num(rank)) => Some((name.clone(), *rank as i64)),
+                    _ => None },
+                _ => None }).collect(),
+            _ => vec![] };
+        Ok(pyjson::Json::Arr(broker::growth_profile(&state, &order, entry_chars, max_tokens)))
+    });
+    envelope(result)
+}
+
+#[no_mangle]
+pub extern "C" fn cc_pins_recall(arg: *const c_char) -> *mut c_char {
+    let result = read_arg(arg).and_then(|t| arg_json(&t)).map(|a| {
+        let pins: Vec<pyjson::Json> = match get(&a, "pins") {
+            Some(pyjson::Json::Arr(x)) => x.clone(), _ => vec![] };
+        let term = match get(&a, "term") { Some(pyjson::Json::Str(s)) => s.clone(), _ => String::new() };
+        pyjson::Json::Arr(broker::pins_recall(&pins, &term, 4))
+    });
+    envelope(result)
+}
+
+#[no_mangle]
+pub extern "C" fn cc_tier_get(arg: *const c_char) -> *mut c_char {
+    let result = read_arg(arg).and_then(|t| arg_json(&t)).map(|a| {
+        let e = get(&a, "entry").cloned().unwrap_or(pyjson::Json::Obj(vec![]));
+        broker::tier_get(&e,
+            match get(&a, "hot_days") { Some(pyjson::Json::Num(n)) => *n, _ => 7.0 },
+            match get(&a, "warm_days") { Some(pyjson::Json::Num(n)) => *n, _ => 30.0 },
+            match get(&a, "now") { Some(pyjson::Json::Str(s)) => s.as_str(), _ => "" })
+    });
+    envelope(result)
+}
+
+#[no_mangle]
+pub extern "C" fn cc_tier_promote(arg: *const c_char) -> *mut c_char {
+    let result = read_arg(arg).and_then(|t| arg_json(&t)).map(|a| {
+        let e = get(&a, "entry").cloned().unwrap_or(pyjson::Json::Obj(vec![]));
+        broker::tier_promote(&e,
+            match get(&a, "hot_days") { Some(pyjson::Json::Num(n)) => *n, _ => 7.0 },
+            match get(&a, "warm_days") { Some(pyjson::Json::Num(n)) => *n, _ => 30.0 },
+            match get(&a, "now") { Some(pyjson::Json::Str(s)) => s.as_str(), _ => "" })
+    });
+    envelope(result)
+}
+
+#[no_mangle]
+pub extern "C" fn cc_tier_demote(arg: *const c_char) -> *mut c_char {
+    let result = read_arg(arg).and_then(|t| arg_json(&t)).map(|a| {
+        let e = get(&a, "entry").cloned().unwrap_or(pyjson::Json::Obj(vec![]));
+        broker::tier_demote(&e,
+            match get(&a, "hot_days") { Some(pyjson::Json::Num(n)) => *n, _ => 7.0 },
+            match get(&a, "warm_days") { Some(pyjson::Json::Num(n)) => *n, _ => 30.0 },
+            match get(&a, "now") { Some(pyjson::Json::Str(s)) => s.as_str(), _ => "" })
+    });
+    envelope(result)
+}
+
+#[no_mangle]
+pub extern "C" fn cc_witness_extract_topic(arg: *const c_char) -> *mut c_char {
+    let result = read_arg(arg).and_then(|t| arg_json(&t)).map(|a| {
+        let text = match get(&a, "text") { Some(pyjson::Json::Str(s)) => s.clone(), _ => String::new() };
+        let sw: Vec<pyjson::Json> = match get(&a, "stopwords") { Some(pyjson::Json::Arr(x)) => x.clone(), _ => vec![] };
+        match broker::witness_extract_topic(&text, &sw, 5) {
+            pyjson::Json::Arr(v) => pyjson::Json::Arr(v),
+            other => other,
+        }
+    });
+    envelope(result)
+}
+
+#[no_mangle]
+pub extern "C" fn cc_witness_signals(arg: *const c_char) -> *mut c_char {
+    let result = read_arg(arg).and_then(|t| arg_json(&t)).map(|a| {
+        let message = match get(&a, "message") { Some(pyjson::Json::Str(s)) => s.clone(), _ => String::new() };
+        let tables = get(&a, "tables").cloned().unwrap_or(pyjson::Json::Obj(vec![]));
+        let tool_error = match get(&a, "tool_error") { Some(pyjson::Json::Str(s)) if !s.is_empty() => Some(s.as_str()), _ => None };
+        let task_status = match get(&a, "task_status") { Some(pyjson::Json::Str(s)) if !s.is_empty() => Some(s.as_str()), _ => None };
+        let recent: Vec<pyjson::Json> = match get(&a, "recent_topics") { Some(pyjson::Json::Arr(x)) => x.clone(), _ => vec![] };
+        broker::witness_signals(&message, &tables, tool_error, task_status, &recent)
+    });
+    envelope(result)
+}
+
+#[no_mangle]
+pub extern "C" fn cc_safety_get_params(arg: *const c_char) -> *mut c_char {
+    let result = read_arg(arg).and_then(|t| arg_json(&t)).map(|a| {
+        let rows: Vec<pyjson::Json> = match get(&a, "rows") { Some(pyjson::Json::Arr(x)) => x.clone(), _ => vec![] };
+        broker::safety_get_params(&rows)
+    });
+    envelope(result)
+}
+
+#[no_mangle]
+pub extern "C" fn cc_safety_update_pattern(arg: *const c_char) -> *mut c_char {
+    let result = read_arg(arg).and_then(|t| arg_json(&t)).map(|a| {
+        let rows: Vec<pyjson::Json> = match get(&a, "rows") { Some(pyjson::Json::Arr(x)) => x.clone(), _ => vec![] };
+        let pat = match get(&a, "pattern") { Some(pyjson::Json::Str(s)) => s.clone(), _ => String::new() };
+        pyjson::Json::Arr(broker::safety_update_pattern(&rows, &pat))
+    });
+    envelope(result)
+}
+
+#[no_mangle]
+pub extern "C" fn cc_abstraction_extract_facts(arg: *const c_char) -> *mut c_char {
+    let result = read_arg(arg).and_then(|t| arg_json(&t)).map(|a| {
+        let text = match get(&a, "text") { Some(pyjson::Json::Str(s)) => s.clone(), _ => String::new() };
+        let sw: Vec<pyjson::Json> = match get(&a, "stopwords") { Some(pyjson::Json::Arr(x)) => x.clone(), _ => vec![] };
+        let min_len = match get(&a, "min_len") { Some(pyjson::Json::Num(n)) => *n as usize, _ => 10 };
+        broker::abstraction_extract_facts(&text, &sw, min_len)
+    });
+    envelope(result)
+}
+
+#[no_mangle]
+pub extern "C" fn cc_free_string(ptr: *mut c_char) {
+    if !ptr.is_null() { unsafe { let _ = CString::from_raw(ptr); } }
+}