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/status-script/BUG_REPORT.md

@@ -1,27 +0,0 @@
-# Bug Report: Status Script
-
-## Methodology
-Reviewed the 980-line status.py implementation and 25 passing tests. Verified all commands, state transitions, validation logic, and error handling.
-
-## Acceptance Criteria
-| # | Criterion | Result |
-|---|-----------|--------|
-| 1 | `--task` shows current phase, allowed/forbidden actions | ✅ |
-| 2 | `--transition` validates and writes `.state` | ✅ |
-| 3 | `--transition` refuses past `:awaiting_approval` | ✅ |
-| 4 | `--approve` transitions awaiting → approved | ✅ |
-| 5 | `--approve` refuses if not awaiting approval | ✅ |
-| 6 | `--create-task` creates folder with `.state` = `new` | ✅ |
-| 7 | `--list` shows all tasks with phase and approval status | ✅ |
-| 8 | `--validate-folder` checks out-of-order artifacts | ✅ |
-| 9 | `--audit` runs all check categories | ⚠️ See finding 1 |
-| 10 | `--claim`/`--release`/`--next-available`/`--available` | ✅ |
-| 11 | `--can-edit`/`--scope-check`/`--same-session` | ✅ |
-| 12 | Atomic writes (tmp+rename) | ✅ |
-| 13 | `.state.approvals` log maintained | ✅ |
-| 14 | 25 tests passing | ✅ |
-
-## Findings
-1. **Minor**: `--audit` Category 3 (git modification check) is stubbed — it checks whether the project is a git repo and reports "Skipped: not a git repository" or falls back to a simplified check. Full git-log-based timestamp comparison is not implemented. This is documented as part of the spec's "graceful skip" clause but the implementation is simpler than the spec describes.
-
-## Verdict: PASS