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/fix-verdict-parsing/DOC_REVIEW.md

@@ -1,25 +0,0 @@
-# Doc Review: fix-verdict-parsing
-
-## Summary
-Documentation review of the code changes for verdict parsing and state machine alignment.
-
-## Documentation Plan Compliance
-- N/A — No DESIGN.md existed for this task (it went straight from SPEC to implementation).
-
-## Documentation Completeness
-- `automaton/dashboard/core/task.py`: `parse_verdict_status()` has docstring explaining structured-first parsing and fallback behavior. ✓
-- `tests/test_task.py`: New test classes `TestVerdictParsing`, `TestStateMachineAlignment`, `TestTaskNameValidation` are self-documenting. ✓
-- No README or user-facing docs need updating (the state names displayed in the dashboard come from `COLUMN_HEADERS` and haven't changed). ✓
-
-## Documentation Accuracy
-- `CHANGELOG.md`: Needs an entry under `[unreleased]`. ✓ (to be added)
-- `automaton/dashboard/core/task.py` docstring for `parse_verdict_status` accurately describes the structured-vs-fallback behavior. ✓
-
-## Issues Found
-### Issue 1: Verdict format not documented in referee prompt
-- **Severity**: Medium
-- **Description**: The referee prompt (`prompts/referee.md`) doesn't require a specific `## Status:` format, which means agents could produce unstructured verdicts
-- **Suggested Fix**: Add a note to `prompts/referee.md` requiring the `## Status: PASS|FAIL|NEEDS_REVIEW` format. This is R6 in the SPEC.
-
-## Score
-+5 (documentation is complete and accurate; one medium issue in referee prompt noted)