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/framework-audit/BUG_REPORT.md

@@ -1,18 +0,0 @@
-# Bug Report: Framework Self-Consistency Audit
-
-## Methodology
-Reviewed RESEARCH.md for completeness against SPEC.
-
-## Acceptance Criteria
-| # | Criterion | Result |
-|---|-----------|--------|
-| 1 | All principles extracted | ✅ (11 principles) |
-| 2 | All gaps identified with root cause | ✅ (10 gaps, G1-G10) |
-| 3 | Gaps prioritized | ✅ (impact/effort matrix) |
-| 4 | Tasks validated | ✅ (existing + new task created) |
-| 5 | New tasks for uncovered gaps | ✅ (dashboard-task-review) |
-
-## Findings
-None.
-
-## Verdict: PASS