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/dashboard-toggle/SPEC.md

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+# Contract: Dashboard Phase Grouping
+
+## Goal
+Group the 12 Kanban columns into 5 logical phase groups, with individual task states shown as sub-labels on cards. Also fix the header to show the project name instead of a scope indicator.
+
+## Header Fix
+The scope badge currently shows "🏗 Framework" or "📁 Project" — this should be replaced with the actual project name.
+- Show the project name (from `README.md` first heading, or `.automaton/project-name.md` if it exists)
+- If no project name is found, show the project directory name
+- No need for scope indicators (Framework/Project mode is internal)
+
+## Column Grouping
+
+| Group | Columns | Rationale |
+|-------|---------|----------|
+| **Planning** | Backlog, Research, Decomposition | Early stage — defining the problem and scope |
+| **Design** | Design, Test Design | Designing the solution |
+| **Implementation** | Implement | Building the solution |
+| **Verification** | Bug Find, Adversarial Bug Find, Doc Review, Referee | Quality assurance and validation |
+| **Resolution** | Done, Blocked | Final states |
+
+## Card Display
+Each card shows its specific state as a small sub-label beneath the task name:
+```
+┌──────────────────────┐
+│ Implement Task       │
+│ 🔄 implement         │
+└──────────────────────┘
+
+┌──────────────────────┐
+│ Bad Impl             │
+│ ❌ blocked           │
+└──────────────────────┘
+
+┌──────────────────────┐
+│ Research Task        │
+│ 🔄 research          │
+└──────────────────────┘
+```
+
+## Acceptance Criteria
+- [ ] Board renders 5 grouped columns instead of 12 individual columns
+- [ ] Cards in a column display a sub-label with their specific state (e.g., "research", "implement", "bug_find", "blocked")
+- [ ] Empty columns are hidden (no empty groups shown)
+- [ ] Column headers show the group name and total count
+- [ ] Column headers show a colored indicator bar for each group:
+  - Planning: blue (#42a5f5)
+  - Design: cyan (#26c6da)
+  - Implementation: green (#66bb6a)
+  - Verification: amber (#ffa726)
+  - Resolution: green/red (#66bb6a / #ef5350)
+- [ ] Grouped columns are sortable by total count (same as current board behavior)
+- [ ] Clicking a card still opens the detail panel with the same information
+- [ ] Filter bar still works with the grouped view (filter by specific state)
+- [ ] Statistics view shows group-level breakdowns in addition to individual states
+- [ ] Timeline view shows grouped phases (Planning, Design, Implementation, Verification, Resolution) instead of 12 individual states
+- [ ] Header shows the project name (from README.md or directory name) instead of scope indicator
+- [ ] Scope label no longer shows "🏗 Framework" or "📁 Project"
+
+## Stop Condition
+CONTRACT_MET