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/state-file-enforcement/IMPLEMENTATION.md

@@ -0,0 +1,50 @@
+# Implementation: State File Enforcement
+
+## Changes Made
+
+### 1. `.state` file format (implemented in `scripts/status.py`)
+- `.state` file contains a single phase name (e.g., `research`, `research:awaiting_approval`, `implement`)
+- Written atomically via `.state.tmp` → `.state` rename
+- `.state.approvals` append-only log records all approvals with timestamp and approver
+- `.state.lock` for multi-agent claiming (optional, only in multi-agent mode)
+- Non-artifact metadata files (`.state`, `.state.approvals`, `.state.lock`, `.state.tmp`, `VRAM_CONFIG.md`, `PARENT_SPEC.md`, `REVIEW.md`) are excluded from artifact checks
+
+### 2. State transitions with approval sub-states
+- Approval-gated phases: research, decomposition, design, test_design now have `:awaiting_approval` → `:approved` sub-states
+- Non-approval phases: implement, bug_find, adversarial_bug_find, doc_review, referee have no sub-states
+- `status.py --transition` refuses transitions past `:awaiting_approval` without `--approve`
+- `status.py --approve` transitions `:awaiting_approval` → `:approved` and records approval in `.state.approvals`
+
+### 3. Backward compatibility
+- If `.state` doesn't exist, `status.py` infers phase from artifacts and writes `.state`
+- `upgrade.sh` bootstraps `.state` for all existing tasks
+- Phase prompts work with or without `.state` (warns if missing)
+
+### 4. Forbidden artifacts per phase (implemented in `status.py --validate-folder`)
+- Each phase has a defined set of artifacts that must NOT exist (artifacts from future phases)
+- `--validate-folder` checks and reports violations
+- `--transition` refuses to proceed if forbidden artifacts exist
+
+### 5. Task creation gate (implemented in `status.py --create-task`)
+- `--create-task` creates task folder with `.state` = `new` and empty `.state.approvals`
+- Validates kebab-case task names
+- Refuses if task already exists
+- `--audit` Category 4 flags manually created task folders
+
+### 6. Orchestrator and workflow updates
+- `prompts/workflow.md` rewritten: `.state` is canonical, approval sub-states documented, `status.py` commands referenced
+- `prompts/orchestrate.md` reduced from 493 to 143 lines, references `workflow.md` and `subtask_management.md`
+- All phase prompts include `.state` precondition check
+
+## Files Modified
+- `scripts/status.py` (new, 980 lines)
+- `prompts/workflow.md` (rewritten)
+- `prompts/orchestrate.md` (rewritten, 143 lines)
+- `prompts/subtask_management.md` (new, extracted from orchestrate.md)
+- `tests/test_status.py` (new, 25 tests)
+- `scripts/upgrade.sh` (new)
+
+## Test Results
+- 183 tests passing (including 25 new status.py tests)
+- Python compilation clean
+- Shell script syntax clean