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/reconcile-dashboard-spec/.state

@@ -1 +0,0 @@
-complete

tasks/reconcile-dashboard-spec/IMPLEMENTATION.md

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-# Implementation: Reconcile Dashboard Spec with Web Implementation
-
-## Summary
-Updated the dashboard specification and documentation to reflect the actual web-based implementation, and removed the vestigial TUI theme module.
-
-## Files Changed
-- `tasks/dashboard-spec.md` — rewritten for web dashboard
-- `automaton/dashboard/README.md` — removed `q` quit shortcut, updated theme description, removed themes.py/pyproject.toml from architecture diagram
-- `automaton/dashboard/html/index.html` — fixed help modal (`t` = cycle themes, removed `q` quit)
-- `automaton/dashboard/themes.py` — deleted
-
-## Verification
-- `grep -i "terminal\|TUI\|ANSI\|arrow key\|resizable" tasks/dashboard-spec.md` returns no inappropriate matches.
-- `python -m automaton.dashboard` still starts and serves `/`.
-
-## Decisions
-- Web dashboard is canonical; TUI-specific acceptance criteria removed.
-- `themes.py` was a stub for ANSI themes and is no longer needed.

tasks/reconcile-dashboard-spec/REVIEW.md

@@ -1,4 +0,0 @@
-# Review
-- **Status**: approved
-- **Timestamp**: 2026-06-14T09:59:37.715348
-- **Comment**: 

tasks/reconcile-dashboard-spec/SPEC.md

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-# SPEC: Reconcile Dashboard Spec with Web Implementation
-
-## Goal
-Eliminate the mismatch between `tasks/dashboard-spec.md` (which describes a terminal TUI) and the actual web-based dashboard implementation.
-
-## Requirements
-1. Rewrite `tasks/dashboard-spec.md` acceptance criteria to describe the implemented web dashboard.
-2. Update `automaton/dashboard/README.md` help table so shortcuts match the web UI:
-   - `t` cycles themes, not waves.
-   - `q` is documented as browser-only (or removed).
-3. Update `automaton/dashboard/html/index.html` help modal to match the README.
-4. Delete `automaton/dashboard/themes.py` (vestigial ANSI theme stub).
-
-## Acceptance Criteria
-- [ ] `tasks/dashboard-spec.md` contains no TUI-only requirements (ANSI, arrow keys, terminal width, resizable panels).
-- [ ] `README.md` and help modal agree on keyboard shortcuts.
-- [ ] `themes.py` is removed.
-- [ ] `python -m automaton.dashboard` still starts and serves `/` and `/api/tasks`.
-
-## Non-Goals
-- Converting the web dashboard to a TUI.
-- Adding new dashboard features.
-
-## Stop Condition
-When all acceptance criteria are met, output "CONTRACT_MET".

tasks/reconcile-dashboard-spec/VERDICT.md

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-# Verdict: Reconcile Dashboard Spec with Web Implementation
-
-## Status: PASS
-**Completion Date**: 2026-06-14
-
-## Summary
-The dashboard specification now matches the implemented web dashboard. Documentation and help modal shortcuts are consistent, and the unused TUI theme module has been removed.
-
-## Findings
-- `tasks/dashboard-spec.md` rewritten for web dashboard.
-- README and help modal agree on keyboard shortcuts.
-- `themes.py` removed.
-
-## Remaining Issues
-None.
-
-## Score
-+10 PASS