Archive completed tasks, add cleanup commands, self-documenting dashboard UI

- Archive 79 completed framework-dev tasks from tasks/ -> tasks/complete/
- status.py: add --cleanup-done and --install-cleanup-schedule commands
- Add scripts/automaton-cleanup.sh for periodic task archiving
- Dashboard: rename 'Background' tab -> 'Agent', 'Cleanup' agent -> 'Completed Task Archiver', remove redundant group headers and pill badges, dim inactive agent placeholders
- .rules.md: add Self-Documenting UI Names rule
- New tests: test_cleanup_done.py, expanded test_app.py and test_task.py

tasks/complete/state-file-enforcement/VERDICT.md

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+# VERDICT: State File Enforcement
+
+
+## Status: PASS
+## Summary
+Implemented `.state` file as single source of truth for task phase, with approval sub-states (awaiting_approval/approved), atomic writes, forbidden artifacts per phase, task creation gate, and full transition validation in status.py.
+
+## Phase Results
+| Phase | Result |
+|-------|--------|
+| Implementation | ✅ PASS |
+| Bug Find | ✅ PASS (1 minor finding) |
+| Adversarial Bug Find | ✅ PASS |
+| Doc Review | ✅ PASS |
+
+## Findings
+- All acceptance criteria met
+- Minor: `.gitignore` pattern for `.state` not explicitly enforced at project level (documented as metadata only)
+- Minor: Concurrent `--create-task` race condition is theoretically possible but unlikely in practice
+
+## Final Verdict
+**PASS** — All acceptance criteria met. The .state file enforcement mechanism is complete and working. All tests pass.
+
+Score: +10