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/actionable-phase-guidance/.state

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-complete

tasks/actionable-phase-guidance/ADVERSARIAL_BUG_REPORT.md

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-# Adversarial Bug Report — actionable-phase-guidance
-
-## Attack Vectors
-1. **Empty state**: What happens for an unknown/unexpected state value?
-2. **HTML injection**: Could guidance text contain user-controlled content that escapes sanitization?
-3. **Empty guidance**: Does the frontend handle missing/incomplete guidance gracefully?
-
-## Findings
-- Unknown states fall through to a generic return — safe, no crash
-- Guidance text is static (no user content), so injection is not a concern
-- Frontend checks `task.phase_guidance` truthiness before rendering the guidance section — safe
-
-## Verdict
-No vulnerabilities found. The implementation is defensive against all checked attack vectors.

tasks/actionable-phase-guidance/BUG_REPORT.md

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-# Bug Report — actionable-phase-guidance
-
-## Review Scope
-Phase guidance feature across task.py, app.py, dashboard.js, styles.css.
-
-## Findings
-
-### No Critical Bugs Found
-The implementation is clean and well-structured. The phase guidance property covers all 12 states with actionable text. The frontend renders guidance conditionally. All three layers (model, API, UI) are properly wired.
-
-### Minor Observations
-- Some guidance messages reference `{self.name}` without `--project` flag, which may misbehave when run outside the framework project
-- Guidance for BLOCKED state delegates to `unblock_instructions` which is populated only for specific block conditions
-
-## Verdict
-No blocking bugs. Ready for adversarial review.

tasks/actionable-phase-guidance/DOC_REVIEW.md

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-# Doc Review — actionable-phase-guidance
-
-## Documentation Reviewed
-- IMPLEMENTATION.md (task folder)
-- SPEC.md
-- task.py docstrings and comments
-- dashboard.js comments
-
-## Findings
-Documentation is accurate and complete. The IMPLEMENTATION.md correctly enumerates all changed files. The SPEC.md goal ("Add actionable next-step guidance to all dashboard phases") is fully met. No documentation gaps found.
-
-## Verdict
-Documentation is satisfactory. No changes needed.

tasks/actionable-phase-guidance/IMPLEMENTATION.md

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-# Phase Guidance Implementation
-
-## Summary
-Added actionable next-step guidance to all dashboard phases across the full stack.
-
-## Changes
-
-### automaton/dashboard/core/task.py
-- Added `phase_guidance` property to `Task` dataclass providing per-phase actionable guidance text
-- Added `blocker` property for identifying what blocks task progression
-- Added `required_artifact_name` and `next_phase_name` helper properties
-
-### automaton/dashboard/ui/app.py
-- Exposed `phase_guidance`, `blocker`, `required_artifact_name`, `next_phase_name` in the `/api/tasks` JSON response
-
-### automaton/dashboard/html/dashboard.js
-- Added "What's Next" section in the detail modal rendering `phase_guidance`
-- Added "What's Blocking" section rendering `blocker`
-- Added status reason display on task cards
-
-### automaton/dashboard/html/styles.css
-- Added `.detail-guidance`, `.detail-blocker`, `.detail-status-reason` CSS classes

tasks/actionable-phase-guidance/SPEC.md

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-# Phase Guidance\n\nAdd actionable next-step guidance to all dashboard phases.

tasks/actionable-phase-guidance/VERDICT.md

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-# Verdict — actionable-phase-guidance
-
-## Status: PASS
-
-## Summary
-All phases completed successfully:
-1. **Implement**: Phase guidance added across all dashboard layers (model, API, UI)
-2. **Bug Find**: No critical bugs found
-3. **Adversarial Bug Find**: No security vulnerabilities found
-4. **Doc Review**: Documentation accurate and complete
-
-## Final Assessment
-Task satisfies all SPEC.md requirements. Marking complete.