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/SPEC.md

@@ -1,32 +0,0 @@
-# SPEC: Developer Experience and Gitea CI
-
-## Goal
-Improve framework maintainability with documentation, CI, and cleanup.
-
-## Requirements
-1. Create `AGENTS.md` with:
-   - How to run tests
-   - How to run the dashboard
-   - Code/style conventions
-   - How to add/update prompts
-2. Create `.gitea/workflows/ci.yml` that runs:
-   - `python -m py_compile` on all Python files
-   - `python -m pytest`
-   - `bash -n` on all shell scripts (or `shellcheck` if available)
-3. Update `pyproject.toml` with optional dependency groups.
-4. Delete `templates/contract-template.md` (confirmed unused).
-5. Document remaining templates in `templates/README.md` or `AGENTS.md`.
-6. Update `CHANGELOG.md` with entries for all completed work.
-
-## Acceptance Criteria
-- [ ] `AGENTS.md` exists and is useful to a new contributor.
-- [ ] Gitea CI file exists and would pass on the current codebase.
-- [ ] `contract-template.md` is removed.
-- [ ] `CHANGELOG.md` reflects the new work.
-
-## Non-Goals
-- Migrating to GitHub Actions.
-- Rewriting documentation unrelated to the audit fixes.
-
-## Stop Condition
-When all acceptance criteria are met, output "CONTRACT_MET".