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-dashboard-cors-origin/.state

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+complete

tasks/fix-dashboard-cors-origin/.state.approvals

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+research:approved|2026-06-22T14:28:48.476535+00:00|user
+code_review:approved|2026-06-22T14:36:53.472581+00:00|user

tasks/fix-dashboard-cors-origin/ADVERSARIAL_BUG_REPORT.md

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+# Adversarial Bug Report: fix-dashboard-cors-origin
+
+## Attack Vectors Tested
+1. **Preflight OPTIONS request**: `do_OPTIONS()` returns 204 without CORS headers — browser will block cross-origin requests correctly
+2. **Missing security headers on error responses**: `_send_error()` uses `SECURITY_HEADERS` — verified
+3. **X-Frame-Options bypass**: `DENY` is the most restrictive value — no bypass
+4. **MIME type confusion**: `X-Content-Type-Options: nosniff` prevents browsers from sniffing content type
+
+## Findings
+No bugs found. The security headers are correctly applied to all response types.
+
+## Verdict: PASS

tasks/fix-dashboard-cors-origin/BUG_REPORT.md

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+# Bug Report: fix-dashboard-cors-origin
+
+## Scope
+Reviewed `automaton/dashboard/ui/app.py` for security issues after CORS removal.
+
+## Findings
+No bugs found. Wildcard CORS headers removed. Security headers (`X-Content-Type-Options`, `X-Frame-Options`) correctly applied to all responses. `do_OPTIONS()` returns 204 without CORS headers.
+
+## Verdict: PASS

tasks/fix-dashboard-cors-origin/CODE_REVIEW.md

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+# Code Review: fix-dashboard-cors-origin
+
+## Reviewed Files
+- `automaton/dashboard/ui/app.py` (`SECURITY_HEADERS`, `_send_json()`, `_send_error()`, `do_OPTIONS()`)
+- `tests/test_app.py`
+
+## Changes
+Removed wildcard CORS headers (`Access-Control-Allow-Origin: *`), replaced with security headers (`X-Content-Type-Options: nosniff`, `X-Frame-Options: DENY`).
+
+## Analysis
+- **Security**: Removing wildcard CORS eliminates the risk of cross-origin attacks from malicious local web pages
+- **Single-origin app**: The dashboard is a local web app served from a single origin — CORS is unnecessary
+- **Security headers**: `X-Content-Type-Options: nosniff` prevents MIME type sniffing, `X-Frame-Options: DENY` prevents clickjacking
+- **OPTIONS handler**: `do_OPTIONS()` still returns 204 No Content (for preflight requests) but without CORS headers
+- **Tests**: Test assertions correctly verify absence of CORS headers and presence of security headers
+
+## Verdict: PASS
+
+The fix eliminates a security vulnerability while adding useful hardening headers. Tests are properly updated.

tasks/fix-dashboard-cors-origin/DOC_REVIEW.md

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+# Doc Review: fix-dashboard-cors-origin
+
+## Documentation Impact
+No external documentation changes needed. The CHANGELOG.md previously recorded "Added CORS headers" — the CHANGELOG should note their removal for this fix.
+
+## Checklist
+- [x] No new commands or flags introduced
+- [x] AGENTS.md unchanged — no CORS references in framework docs
+- [x] README.md unchanged — no CORS references
+- [x] CHANGELOG.md will be updated to note CORS removal and security headers added
+- [x] `harden-dashboard-security` task history preserved (not modified — it's a historical record)
+
+## Verdict: PASS

tasks/fix-dashboard-cors-origin/IMPLEMENTATION.md

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+# Implementation: fix-dashboard-cors-origin
+
+## Bug
+Dashboard's `app.py` set `Access-Control-Allow-Origin: *` (wildcard CORS) on all responses via `CORS_HEADERS`. Since the dashboard is a local single-origin app, this wildcard CORS header is unnecessary and poses a security risk — any malicious webpage on the machine could make requests to the dashboard API.
+
+## Fix
+1. Removed `CORS_HEADERS` dictionary (which contained `Access-Control-Allow-Origin: *` and `Access-Control-Allow-Methods`)
+2. Added `SECURITY_HEADERS` with `X-Content-Type-Options: nosniff` and `X-Frame-Options: DENY`
+3. Updated `_send_json()`, `_send_error()`, and `do_OPTIONS()` to use `SECURITY_HEADERS` instead of `CORS_HEADERS`
+4. `do_OPTIONS()` no longer returns `Access-Control-Allow-*` headers — it simply returns 204 No Content
+
+## Files Changed
+- `automaton/dashboard/ui/app.py`: Replaced `CORS_HEADERS` with `SECURITY_HEADERS`, updated all response methods
+- `tests/test_app.py`: Updated CORS-related tests to assert NO `Access-Control-Allow-Origin` header is present, and that security headers are sent
+
+## Tests
+- `test_app.py` tests updated to verify security headers (`X-Content-Type-Options`, `X-Frame-Options`) and absence of CORS headers
+- All 249 tests pass

tasks/fix-dashboard-cors-origin/SPEC.md

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+# Spec: fix-dashboard-cors-origin
+
+## Problem
+`automaton/dashboard/ui/app.py:40-44` sets `Access-Control-Allow-Origin: *` on all responses, including POST and PUT endpoints. Any website open in the user's browser can send cross-origin requests to `localhost:8080`, allowing silent modification of task reviews and config.
+
+## Fix
+Remove the wildcard CORS origin. The dashboard is a local single-origin app — CORS headers are unnecessary. Either:
+1. Remove `CORS_HEADERS` entirely and stop sending them, OR
+2. Set `Access-Control-Allow-Origin` to `http://localhost:{port}` only
+
+Option 1 is simpler and safer. The dashboard serves both the HTML and the API from the same origin, so CORS is not needed.
+
+## Acceptance Criteria
+- No `Access-Control-Allow-Origin: *` header in responses
+- Cross-origin requests from other websites are blocked by the browser
+- Same-origin dashboard HTML can still fetch the API (no CORS needed)
+- Existing CORS tests in `test_app.py` updated to reflect the change

tasks/fix-dashboard-cors-origin/VERDICT.md

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+# Verdict: fix-dashboard-cors-origin
+
+## Status: PASS
+
+## Summary
+Removed wildcard CORS headers (`Access-Control-Allow-Origin: *`) from dashboard API responses. Replaced with security headers (`X-Content-Type-Options: nosniff`, `X-Frame-Options: DENY`). Tests updated to verify absence of CORS headers and presence of security headers.
+
+## 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