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).

CHANGELOG.md

@@ -2,6 +2,27 @@
 
 ## [unreleased]
 
+### Fixed — dashboard scroll-reset on auto-refresh
+
+- **`automaton/dashboard/html/dashboard.js`** (`renderBoard`): auto-refresh rebuilt the board via `board.innerHTML = html` every tick (default 2s), destroying each `.column-body`'s `scrollTop` and snapping it back to 0 — so users couldn't scroll the Done group down to review older tasks. Now snapshots each column-body's `scrollTop` (plus the board's `scrollLeft` and the active view's `scrollTop`) before the rebuild and restores them after, matched by index (PHASE_GROUPS order is stable).
+- **New tests**: `tests/test_dashboard_ui.py` — Playwright browser smoke test (board renders tasks; column scroll survives an auto-refresh tick). Skipped via `importorskip` when playwright/chromium is absent so CI without a browser stays green. Verified the test fails without the fix (scrollTop resets to 0) and passes with it.
+
+### Fixed — failing plist-isolation test (host bleed false positive)
+
+- **`tests/test_cleanup_done.py`** (`TestInstallCleanupScheduleIsolation.test_plist_written_to_override_dir_not_host`): asserted `not host.exists()`, but the host `~/Library/LaunchAgents/com.automaton.cleanup.plist` legitimately exists from a real `--install-cleanup-schedule` run, causing a false failure. Now snapshots the host plist's `st_mtime_ns` (or absence) before the test run and asserts it's unchanged after — a pre-existing real install no longer fails the test; only an actual write during the run would.
+
+### Changed — bind ornith as the Implement model
+
+- **`config.md`** (Model Configuration): set `Model: omlx/Ornith-1.0-35B-4bit-mlx` and `Override context window: 32768` (matches the opencode.json limit for the local LLM). Interactive autopilot already used ornith via opencode's default model; this makes it explicit so auto-detection can't pick another model. Loop ticks still use the single `harness.command` for all roles — per-role model binding (`{model}` substitution in loop-runner.py) is **not** implemented yet (see model-divergence gap below).
+
+### Changed — README: document the self-improvement loop's scope for new projects
+
+- **`README.md`** (Project Setup): added "The Self-Improvement Loop is framework-scoped" note — the default SI loop targets `~/.automaton/` (the framework), not your project, by design. Documents the leave-running / pause / create-a-project-loop paths.
+
+### Known gap — model-divergence was marked complete but unimplemented
+
+- The `model-divergence-enforcement` parent task and its 3 subtasks (`mde-manifest-detection`, `mde-interactive-enforcement`, `mde-loop-enforcement`) are `.state = complete` but contain only `SPEC.md`/`DECOMPOSITION.md` — no `IMPLEMENTATION.md`, no `VERDICT.md`. The promised code (`status.py` model_divergence audit category, `--transition --model`, `.state.models`, `loop.json` per-role `model` + `{model}` substitution in loop-runner.py, dashboard badges) was never written. Consequence: loop roles (implement/verify/orchestrate) all run the same model, so the D12 conflict-of-interest rule (Verify ≠ Implement session/model) is unenforced. Interactive autopilot is unaffected.
+
 ### Added — framework agent features design docs
 
 - **New `design/framework/`** directory: design index, functional design, technical design, and backlog for three framework-level agent features: