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/developer-experience-gitea-ci/VERDICT.md

@@ -1,20 +0,0 @@
-# Verdict: Developer Experience and Gitea CI
-
-## Status: PASS
-**Completion Date**: 2026-06-14
-
-## Summary
-Contributor documentation, Gitea CI, and template cleanup are in place. The framework is easier to maintain and has automated checks for regressions.
-
-## Findings
-- `AGENTS.md` created.
-- `.gitea/workflows/ci.yml` created.
-- `contract-template.md` removed.
-- `templates/README.md` documents remaining templates.
-- `CHANGELOG.md` updated.
-
-## Remaining Issues
-None.
-
-## Score
-+10 PASS