## TASK C: D5 authority audit — D5-B fixed, D5-A structural limitation documented
Branch `d5-authority-audit`, commit 4703484.
**D5-B (exception-path verification) FIXED:**
- `_execute_stage` exceptions are now caught in execute() via try/except/else
- Mutation verification runs in ALL paths including exceptions
- The exception is captured but NOT re-raised past the mutation check (which would bypass the STAGE_FAILED result)
- Test: worker mutates source then raises RuntimeError → mutation caught, result FAILED ✓
**D5-A (task_tree authority) — STRUCTURAL LIMITATION DOCUMENTED:**
- task_tree.json remains in the allowlist because advance() runs inside _execute_stage (the executor writes it)
- A worker that also modifies it cannot be distinguished from the executor's write by fingerprint alone
- The structural fix (separating worker execution from executor advancement) is tracked for ADAPT-2 (#291)
- The test documents the current boundary honestly — it does NOT pretend the check catches what it can't
**Both audit findings were addressed according to their actual type:**
- D5-B: real code fix (exception-safe control flow)
- D5-A: structural limitation documented honestly (not pretended as fixed)
1171 tests pass; ruff clean. BLE001 baseline 352→353 (new exception block).
TASK C D5 authority audit results:
D5-B (exception-path verification) FIXED:
- _execute_stage exceptions are now caught (try/except/else) in execute()
- mutation verification runs in ALL paths including exceptions
- exception is captured, mutation check runs, result is STAGE_FAILED
- the exception is NOT re-raised past the mutation check (which would
bypass the STAGE_FAILED result)
- test_d5b_exception_path_still_verifies: worker mutates source then
raises → mutation caught, result FAILED ✓
D5-A (task_tree authority) — STRUCTURAL LIMITATION DOCUMENTED:
- task_tree.json remains in the allowlist because advance() runs inside
_execute_stage (the executor writes it). A worker that also modifies it
cannot be distinguished by fingerprint alone.
- The structural fix (separating worker execution from executor advance)
is tracked for ADAPT-2 (#291) route authority
- The test documents the current boundary honestly — it does NOT pretend
the check catches what it can't
Lint baseline: BLE001 352→353 (new exception block in execute()).
1171 tests pass; ruff clean.
🤖Headless spec gate (non-blocking, #204 first slice)
Spec-gate agent produced no text output — check runner logs.
Deterministic floors still govern the merge
This comment is advisory. Required checks (lint, tests, canaries, type-check, coverage, dependency lock, impact gate) remain the merge authority per docs/adversarial-review.md proportionality.
🤖 **Headless spec gate (non-blocking, #204 first slice)**
Spec-gate agent produced no text output — check runner logs.
<details><summary>Deterministic floors still govern the merge</summary>
This comment is advisory. Required checks (lint, tests, canaries, type-check, coverage, dependency lock, impact gate) remain the merge authority per docs/adversarial-review.md proportionality.</details>
🤖Headless spec gate (non-blocking, #204 first slice)
Spec-gate agent produced no text output — check runner logs.
Deterministic floors still govern the merge
This comment is advisory. Required checks (lint, tests, canaries, type-check, coverage, dependency lock, impact gate) remain the merge authority per docs/adversarial-review.md proportionality.
🤖 **Headless spec gate (non-blocking, #204 first slice)**
Spec-gate agent produced no text output — check runner logs.
<details><summary>Deterministic floors still govern the merge</summary>
This comment is advisory. Required checks (lint, tests, canaries, type-check, coverage, dependency lock, impact gate) remain the merge authority per docs/adversarial-review.md proportionality.</details>
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TASK C: D5 authority audit — D5-B fixed, D5-A structural limitation documented
Branch
d5-authority-audit, commit4703484.D5-B (exception-path verification) FIXED:
_execute_stageexceptions are now caught in execute() via try/except/elseD5-A (task_tree authority) — STRUCTURAL LIMITATION DOCUMENTED:
Both audit findings were addressed according to their actual type:
1171 tests pass; ruff clean. BLE001 baseline 352→353 (new exception block).
🤖 Headless spec gate (non-blocking, #204 first slice)
Spec-gate agent produced no text output — check runner logs.
Deterministic floors still govern the merge
This comment is advisory. Required checks (lint, tests, canaries, type-check, coverage, dependency lock, impact gate) remain the merge authority per docs/adversarial-review.md proportionality.
🤖 Headless spec gate (non-blocking, #204 first slice)
Spec-gate agent produced no text output — check runner logs.
Deterministic floors still govern the merge
This comment is advisory. Required checks (lint, tests, canaries, type-check, coverage, dependency lock, impact gate) remain the merge authority per docs/adversarial-review.md proportionality.