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/fix-cat3-audit-paths/DOC_REVIEW.md

@@ -0,0 +1,11 @@
+# Doc Review: fix-cat3-audit-paths
+
+## Summary
+No documentation updates needed. The Category 3 audit is an internal enforcement mechanism not documented in user-facing docs.
+
+## Findings
+- No references to the Cat 3 audit path logic exist in README.md, AGENTS.md, or other docs.
+- The fix is internal to `status.py` and does not change any user-facing API.
+
+## Verdict
+No doc changes required.