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/readme-upgrade-docs/VERDICT.md

@@ -1,16 +0,0 @@
-# Verdict: readme-upgrade-docs
-
-## Status: PASS
-**Completion Date**: 2026-06-15
-
-## Summary
-Updated README.md with comprehensive v2.0 documentation: `--project` flag on all commands, `--can-edit` modes, `--upgrade` for untracked tasks, three enforcement layers, full upgrade process for existing projects, pre-commit hook installation, and updated Key Components.
-
-## Findings
-- All 6 acceptance criteria met
-- 200 tests pass
-- Documentation-only change, no code bugs possible
-- Pre-existing issues in upgrade.sh noted but not in scope
-
-## Score
-+10