Fix 10 audit bugs: path prefix matching, verdict parsing, CORS, stale-task detection, phase mapping

Batch 1 (High severity):
- Bug 1: --audit cat3 now checks .automaton/tasks/ paths
- Bug 4: Verdict PASS/FAIL uses structured ## Status: line parsing
- Bug 5: register-guards.sh checks .json/.jsonc, writes plugin key, strips comments
- Bug 7: --can-edit/--scope-check path prefix uses os.sep boundary

Batch 2 (Medium/Low severity):
- Bug 2: migrate-project.sh find command parentheses for -prune binding
- Bug 3: vram_detect model prefix matching with known-suffix whitelist
- Bug 6: dashboard reads .state file before artifact heuristic fallback
- Bug 8: removed wildcard CORS, added security headers (nosniff, DENY)
- Bug 9: stale-task detection uses .state.lastedit instead of .state mtime
- Bug 10: TEST_PLAN.md maps to test_design (was implement)

249 tests pass (up from 235). All 10 tasks driven through full workflow to completion.

tasks/fix-stale-task-mtime-proxy/.state

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+complete

tasks/fix-stale-task-mtime-proxy/.state.approvals

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+research:approved|2026-06-22T14:28:48.582737+00:00|user
+code_review:approved|2026-06-22T14:36:53.578676+00:00|user

tasks/fix-stale-task-mtime-proxy/ADVERSARIAL_BUG_REPORT.md

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+# Adversarial Bug Report: fix-stale-task-mtime-proxy
+
+## Attack Vectors Tested
+1. **Manual .state.lastedit manipulation**: A user could `touch .state.lastedit` to reset the timer — this is equivalent to `--touch` and is acceptable behavior
+2. **Deleted .state.lastedit**: `_get_edit_timestamp()` falls back to `.state` mtime — correct
+3. **Multiple tasks in implement phase**: `_touch_lastedit` called only for `primary` task (the first in-scope task) — acceptable, as the primary task is the one being edited
+4. **Clock skew**: Uses `time.time()` consistently — not a concern on local system
+5. **Stale task in single-task path**: Now correctly checked (was missing before this fix)
+
+## Findings
+No bugs found.
+
+## Verdict: PASS

tasks/fix-stale-task-mtime-proxy/BUG_REPORT.md

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+# Bug Report: fix-stale-task-mtime-proxy
+
+## Scope
+Reviewed `scripts/status.py` `_get_edit_timestamp()`, `_touch_lastedit()`, `cmd_can_edit()`, `cmd_same_session()`, `cmd_touch()`.
+
+## Findings
+No bugs found. The `.state.lastedit` mechanism correctly:
+- Is touched on ALLOWED `--can-edit` responses
+- Falls back to `.state` mtime when `.state.lastedit` doesn't exist
+- Is excluded from `NON_ARTIFACT_FILES`
+- Used consistently across `--can-edit`, `--same-session`, and `--touch`
+
+## Verdict: PASS

tasks/fix-stale-task-mtime-proxy/CODE_REVIEW.md

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+# Code Review: fix-stale-task-mtime-proxy
+
+## Reviewed Files
+- `scripts/status.py` (`_get_edit_timestamp()`, `_touch_lastedit()`, `cmd_can_edit()`, `cmd_same_session()`, `cmd_touch()`, `NON_ARTIFACT_FILES`)
+
+## Changes
+1. Added `.state.lastedit` file as the stale-task timer source
+2. `_touch_lastedit()` called on ALLOWED `--can-edit` responses
+3. `_get_edit_timestamp()` reads `.state.lastedit` with fallback to `.state` mtime
+4. Added staleness check to single-task `--can-edit --task` path
+5. `--touch` now touches `.state.lastedit` instead of `.state`
+
+## Analysis
+- **Correctness**: Using `.state.lastedit` (touched on actual edit activity) is a better proxy for staleness than `.state` mtime (which only reflects phase transitions)
+- **Backward compatibility**: Falls back to `.state` mtime when `.state.lastedit` doesn't exist
+- **Non-artifact**: `.state.lastedit` correctly added to `NON_ARTIFACT_FILES` to avoid being treated as a phase artifact
+- **Single-task path**: Adding staleness check to `--can-edit --task` makes enforcement consistent across both code paths
+- **`--touch` command**: Updated to touch `.state.lastedit` — consistent with the new activity tracking model
+
+## Verdict: PASS
+
+The fix is well-structured, maintains backward compatibility, and correctly addresses the mtime proxy issue. Tests cover creation, staleness detection, and fallback behavior.

tasks/fix-stale-task-mtime-proxy/DOC_REVIEW.md

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+# Doc Review: fix-stale-task-mtime-proxy
+
+## Documentation Impact
+- Updated `--touch` help text in status.py to reflect `.state.lastedit` instead of `.state` mtime
+- No AGENTS.md changes needed (AGENTS.md describes the staleness concept, not the implementation detail)
+- system-prompt.md mentions "Tasks idle for >30 minutes become stale" — still accurate
+- prompts/orchestrate.md mentions `--touch` to reset clock — still accurate
+
+## Checklist
+- [x] `--touch` help text updated to mention `.state.lastedit`
+- [x] AGENTS.md staleness description still accurate
+- [x] system-prompt.md stale task description still accurate
+- [x] prompts/orchestrate.md `--touch` usage still accurate
+- [x] CHANGELOG.md will be updated for the release
+
+## Verdict: PASS

tasks/fix-stale-task-mtime-proxy/IMPLEMENTATION.md

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+# Implementation: fix-stale-task-mtime-proxy
+
+## Bug
+`--can-edit` used `.state` file mtime as a proxy for "last edit activity" to detect stale tasks. But `.state` is modified by phase transitions, not by actual editing. A task in `implement` phase for 30+ minutes would be flagged as stale even if the developer was actively editing files the whole time, because `.state` mtime only reflects the last phase transition.
+
+## Fix
+1. Added `_get_edit_timestamp()` — reads `.state.lastedit` mtime if it exists, falls back to `.state` mtime for backward compatibility
+2. Added `_touch_lastedit()` — creates/updates `.state.lastedit` file
+3. `--can-edit` now calls `_touch_lastedit()` on ALLOWED responses (both project-level and task-level paths), recording actual edit activity
+4. Staleness check uses `_get_edit_timestamp()` instead of raw `.state` mtime
+5. Added `.state.lastedit` to `NON_ARTIFACT_FILES` so it's not treated as a phase artifact
+6. `--same-session` uses `_get_edit_timestamp()` for consistent activity tracking
+7. `--touch` command now touches `.state.lastedit` instead of `.state`
+8. Added staleness check to the single-task `--can-edit --task` path (previously only project-level `--can-edit` checked staleness)
+
+## Files Changed
+- `scripts/status.py`: Added `_get_edit_timestamp()`, `_touch_lastedit()`, updated `cmd_can_edit()`, `cmd_same_session()`, `cmd_touch()`, `NON_ARTIFACT_FILES`
+- `tests/test_status.py`: Added `TestStateLastEdit` class with 5 tests and `TestTestPlanPhaseMapping` class
+
+## Tests
+- `test_can_edit_creates_lastedit_on_allowed`: Verifies `.state.lastedit` is created on ALLOWED
+- `test_can_edit_creates_lastedit_with_file_scope`: Same for file-scoped can-edit
+- `test_stale_uses_lastedit_not_state_mtime`: Old `.state` + recent `.state.lastedit` → not stale
+- `test_stale_when_lastedit_old`: Recent `.state` + old `.state.lastedit` → stale
+- `test_falls_back_to_state_mtime_without_lastedit`: No `.state.lastedit` → falls back to `.state` mtime
+- All 249 tests pass

tasks/fix-stale-task-mtime-proxy/SPEC.md

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+# Spec: fix-stale-task-mtime-proxy
+
+## Problem
+`scripts/status.py:965,1072` uses the `.state` file's mtime as a proxy for "last edit activity." But every `--transition` rewrites `.state`, resetting its mtime. A task that was transitioned 29 minutes ago appears "fresh" even though no editing happened. The `--same-session` check also gives false positives after any transition.
+
+## Fix
+Use a separate `.state.lastedit` timestamp file that is updated only when `--can-edit` returns ALLOWED (actual edit activity). Check `.state.lastedit` mtime instead of `.state` mtime for stale-task detection. If `.state.lastedit` doesn't exist, fall back to `.state` mtime (backward compat).
+
+## Acceptance Criteria
+- Transitioning a task does NOT reset the stale-task timer
+- Running `--can-edit` (and getting ALLOWED) DOES reset the timer
+- If `.state.lastedit` doesn't exist, falls back to `.state` mtime
+- Existing tests still pass
+- Add test verifying transition doesn't reset timer but can-edit does

tasks/fix-stale-task-mtime-proxy/VERDICT.md

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+# Verdict: fix-stale-task-mtime-proxy
+
+## Status: PASS
+
+## Summary
+Fixed stale-task detection to use `.state.lastedit` timestamp (touched on actual edit activity via `--can-edit` ALLOWED) instead of `.state` mtime (which only reflects phase transitions). Added backward-compatible fallback to `.state` mtime. Added staleness check to single-task `--can-edit --task` path. Updated `--touch` and `--same-session` for consistency. 5 new tests added.
+
+## Artifacts
+- IMPLEMENTATION.md: Complete
+- CODE_REVIEW.md: PASS
+- BUG_REPORT.md: No bugs found
+- ADVERSARIAL_BUG_REPORT.md: No bugs found
+- DOC_REVIEW.md: PASS