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-read-state/IMPLEMENTATION.md

@@ -0,0 +1,15 @@
+# Implementation: fix-dashboard-read-state
+
+## Bug
+Dashboard's `determine_task_state()` in `task.py` inferred task phase from artifact filenames only, ignoring the `.state` file. This caused the dashboard to show incorrect states when the `.state` file (source of truth) disagreed with the artifact heuristic.
+
+## Fix
+1. Added `_state_string_to_task_state()` helper function that maps state machine phase strings (e.g. `"implement"`, `"code_review:awaiting_approval"`) to `TaskState` enum values. Handles sub-states by splitting on `":"` and using the base phase.
+2. Modified `determine_task_state()` to read the `.state` file first. If `.state` exists and maps to a valid `TaskState`, that takes precedence. The artifact heuristic is now a fallback for tasks without `.state` files.
+
+## Files Changed
+- `automaton/dashboard/core/task.py`: Added `_state_string_to_task_state()` function, modified `determine_task_state()` to read `.state` before falling back to artifact heuristic
+
+## Tests
+- Existing tests in `test_task.py` continue to pass (they test the artifact fallback path since test tasks don't have `.state` files by default)
+- All 249 tests pass