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/framework-self-enforcement/SPEC.md

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+# SPEC: Enforce Task-Driven Development via Framework Rules
+
+## Overview
+
+The automaton framework has a task-driven workflow (SPEC → Design → Implementation → Verification → Resolution) but nothing tells the AI agent to follow it. The agent makes ad-hoc edits instead of creating proper tasks first.
+
+## Root Cause
+
+The agent reads `system-prompt.md`, `.agent.md`, and `.rules.md` at startup, but none instruct it to use the task-driven process. The agent treats framework modifications as "normal coding."
+
+## Framework Audit Context
+
+This task covers 4 gaps identified in `framework-audit/RESEARCH.md`:
+
+| Gap | Principle | Rule to Add |
+|-----|-----------|-------------|
+| G1 | Task-driven development | Create task before editing files |
+| G2 | VRAM-aware task sizing | Check config.md VRAM before scoping tasks |
+| G4 | No manual task creation | Never mkdir tasks/ — use Orchestrator |
+| G5 | Agent reads global rules | system-prompt.md must read global .rules.md |
+| G6 | Self-improving rules | Add rules per failure mode observed |
+
+## Changes
+
+### 1. `~/.automaton/.rules.md`
+
+Replace the template with concrete rules:
+
+```markdown
+# .rules.md
+
+## Task-Driven Development
+- All changes must go through a task in tasks/{name}/ with SPEC.md → phases → VERDICT.md
+- Never edit files directly without a corresponding task
+- Never create task directories manually (mkdir tasks/) — use the Orchestrator
+
+## VRAM-Aware Task Sizing
+- Before creating or scoping a task, check ~/.automaton/config.md for VRAM limits
+- Verify the task fits within max peak context (default: 12k tokens)
+- If no config exists, default to 8k with 25% headroom
+
+## Self-Improvement
+- Add one rule per observed failure mode with a concrete example
+- Consolidate contradictions monthly. Remove stale rules.
+- No rule without a real example of the problem it prevents
+```
+
+### 2. `system-prompt.md`
+
+After existing instructions, add:
+
+```
+4. Read ~/.automaton/.rules.md (global framework rules)
+```
+
+## Acceptance Criteria
+
+- [ ] `~/.automaton/.rules.md` has Task-Driven Development, VRAM-Aware Sizing, and Self-Improvement sections
+- [ ] `system-prompt.md` instructs agent to read global `.rules.md`
+- [ ] Agent creates tasks before making changes
+- [ ] Agent checks VRAM limits before scoping tasks
+- [ ] Agent never creates task directories manually
+
+## Out of Scope
+
+- Documentation/changelog process (separate task)
+- Project migration/cleanup (separate task)
+- Onboarding changes (separate task)
+- Dashboard task review UI (separate task)