Restore archived tasks, fix dashboard scroll-reset, bind ornith, add Playwright smoke test

- **Restore 82 completed tasks** from tasks/complete/ back to tasks/ top
  level (all <7 days old per the cleanup policy; premature bulk archive
  was fixed).
- **Dashboard: fix scroll-reset on auto-refresh** — renderBoard rebuilds
  the board via innerHTML every 2s, destroying each column-body's
  scrollTop. Now snapshots column-body scrollTop + board.scrollLeft +
  view.scrollTop before rebuild and restores after (matched by
  PHASE_GROUPS index).
- **Dashboard UI additions** (pre-existing unstaged work): approval
  section cards, transition buttons, inline artifact editor (textarea for
  writing missing SPEC/VERDICT/etc from the detail modal).
- **Bind ornith as Implement model** — config.md: Model explicit to
  omlx/Ornith-1.0-35B-4bit-mlx, context window 32768. Interactive
  autopilot already used ornith via opencode default; now explicit.
- **Fix cleanup stub** — automaton-cleanup.sh had a stale --project arg
  pointing at a pytest temp dir (test isolation leak). Rewired to point
  at ~/.automaton.
- **Fix plist-isolation test** — test asserted host plist doesn't exist,
  but a real install creates it. Now snapshots mtime before run, asserts
  unchanged after (only a write during the test counts as bleed).
- **New Playwright smoke test** (tests/test_dashboard_ui.py) — 2 tests:
  board renders tasks, column scroll survives auto-refresh tick.
  Verified the test fails without the scroll fix (scrollTop resets to 0).
  Skipped via importorskip when playwright is absent (main CI stays
  green).
- **Clarify SI loop scope in README** — new-project onboarding section
  documents the framework-scoped self-improvement loop and options
  (leave/pause/create project loop).
- **CHANGELOG** documents all changes including the known model-divergence
  gap (mde tasks marked complete but per-role model binding was never
  implemented).

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

@@ -0,0 +1,19 @@
+# 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.