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/project-migration/IMPLEMENTATION.md

@@ -0,0 +1,27 @@
+# Implementation: Project Migration Script
+
+## Summary
+
+Created `scripts/migrate-project.sh` to clean up projects that were set up under the old copy-based model. Also updated `prompts/onboarding.md` to detect stale projects and offer migration.
+
+## Changes Made
+
+### `scripts/migrate-project.sh`
+Shell script that:
+1. Scans `{project}/.automaton/` for files that now live in `~/.automaton/`
+2. Files **identical to global** → deleted (framework provides them)
+3. Files **different from global** → moved to `.automaton/extensions/`
+4. Preserves `.agent.md` and `.rules.md` as-is
+5. Reports what was deleted, moved, and kept
+
+### `prompts/onboarding.md`
+Added "Migration Check" section at the end:
+- During onboarding, checks if project has stale framework file copies
+- Identifies files beyond `.agent.md` and `.rules.md`
+- Offers to run `migrate-project.sh` or provides manual instructions
+
+## Files Created
+- `scripts/migrate-project.sh` — migration shell script (125 lines)
+
+## Files Modified
+- `prompts/onboarding.md` — added migration detection section