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/DOC_REVIEW.md

@@ -0,0 +1,16 @@
+# Doc Review: Inflight Upgrade Path
+
+## Documents Checked
+| Doc | Status |
+|-----|--------|
+| scripts/upgrade.sh | ✅ Scans tasks, bootstraps .state, runs audit |
+| scripts/migrate-project.sh | ✅ Handles .state files correctly (skips/ignores) |
+| config.md | ✅ Version marker added (Version 2.0, state enforcement: enabled) |
+| README.md | ✅ .state file, status.py, upgrade path documented |
+| CHANGELOG.md | ✅ Entries added under [unreleased] |
+| prompts (all) | ✅ Graceful degradation when .state is missing |
+
+## Findings
+None — upgrade documentation is complete and consistent.
+
+## Verdict: PASS