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/project-scoping-enforcement/DOC_REVIEW.md

@@ -1,27 +0,0 @@
-# Documentation Review: project-scoping-enforcement
-
-## Summary
-Review of documentation updates for project scoping enforcement changes.
-
-## Documentation Plan Compliance
-- [x] AGENTS.md — updated with `--upgrade`, `--project`, untracked tasks
-- [x] .rules.md — updated with Project Scoping section, `--project`, untracked tasks
-- [x] system-prompt.md — updated with Project Scoping section, `--project`, untracked tasks
-- [x] .agent.md — updated with `--upgrade`, `--project`
-- [x] .onboarding.md — updated with `--upgrade`, `--project`
-- [x] prompts/workflow.md — updated with untracked tasks, `--project`
-- [x] prompts/onboarding.md — updated with `--upgrade`
-- [x] CHANGELOG.md — updated with all changes
-
-## Documentation Completeness
-- Code documentation: N/A (no new public API)
-- User documentation: Complete
-- API documentation: N/A
-
-## Issues Found
-### Issue 1: Bug 2 from adversarial report — heuristic documentation mismatch
-- **Severity**: Low
-- **Description**: The `_infer_state_from_artifacts` heuristic returns `bug_find` for SPEC.md-only tasks, but this isn't documented anywhere. Since `--upgrade` is the only user-facing command that uses it, the documentation should note that inferred phases may need manual correction.
-
-## Score
-+5 (Complete, one minor documentation note needed)