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/inflight-upgrade-path/BUG_REPORT.md

@@ -0,0 +1,21 @@
+# Bug Report: Inflight Upgrade Path
+
+## Methodology
+Reviewed upgrade.sh script, bootstrap .state from artifacts, version marker in config.md, and README/CHANGELOG updates.
+
+## Acceptance Criteria
+| # | Criterion | Result |
+|---|-----------|--------|
+| 1 | `status.py` bootstraps `.state` for tasks without it | ✅ |
+| 2 | `upgrade.sh` scans all tasks and bootstraps missing `.state` | ✅ |
+| 3 | `upgrade.sh` runs `--audit` and reports violations | ✅ |
+| 4 | `upgrade.sh` produces human-readable summary | ✅ |
+| 5 | Phase prompts work with or without `.state` | ✅ |
+| 6 | `README.md` updated with new features | ✅ |
+| 7 | `CHANGELOG.md` updated under `[unreleased]` | ✅ |
+| 8 | Version marker added to `config.md` | ✅ |
+
+## Findings
+1. **Minor**: `migrate-project.sh` does not explicitly handle `.state` files that may already exist in migrated project task folders. The spec mentions "not delete `.state` files during migration" but the migration script currently skips task folders silently if they have `.state`. This is correct behavior but not explicitly tested.
+
+## Verdict: PASS