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/hook-install-process/DOC_REVIEW.md

@@ -1,17 +0,0 @@
-# Documentation Review: hook-install-process
-
-## Summary
-Review of documentation for hook installation changes.
-
-## Documentation Plan Compliance
-- [x] prompts/onboarding.md — Step 2c added with hook installation
-- [x] scripts/upgrade.sh — Hook installation logic with error handling
-- [x] scripts/install.sh — Post-install steps mention hook setup
-- [x] AGENTS.md — Repository layout includes git-hooks/ directory
-- [x] contracts/harness-integration.md — Pre-commit hook section with installation instructions
-
-## Issues Found
-None — documentation is complete and consistent.
-
-## Score
-+5