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/complete/add-blast-radius-scheduler/DOC_REVIEW.md

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+# DOC_REVIEW: add-blast-radius-scheduler
+
+Reviewed doc impact for task `add-blast-radius-scheduler`.
+
+## Doc edits in this task
+
+### 1. `design/loops/technical.md` section 7 step 4
+Updated to document the runner's worktree creation behavior, including branch-exists retry and non-git fallback. No "deferred" language remains. PASS
+
+### 2. `CHANGELOG.md`
+New `[unreleased]` entry for blast-radius scheduler. PASS
+
+### 3. `AGENTS.md`
+No new CLI surface. The runner's worktree creation is internal behavior, not a user-facing command. No change needed.
+
+### 4. `README.md`
+The loop engineering section already mentions per-loop worktrees (D2). No change needed.
+
+### 5. `design/loops/functional.md`
+Already documents `--no-worktree` as the opt-out mechanism (via `blast_radius.use_worktree: false`). No change needed.
+
+### 6. `templates/loops/ci-triage/loop.json`
+Already has `"use_worktree": true` in `blast_radius`. No change needed.
+
+### 7. `prompts/`
+No prompt changes in this task. No change.
+
+## Code-doc consistency check
+
+- `technical.md` section 7 step 4: worktree creation flow matches `_ensure_worktree` implementation. PASS
+- `functional.md` section on `--no-worktree`: matches `use_worktree: false` behavior. PASS
+- `ci-triage/loop.json` `blast_radius.use_worktree`: matches the default-true behavior when field is missing. PASS
+
+## Summary
+
+Doc edits in this task:
+- `design/loops/technical.md` section 7 step 4 updated.
+- `CHANGELOG.md` new entry.
+
+No code-doc mismatches. READY for referee.