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/wire-dashboard-config/VERDICT.md

@@ -1,21 +0,0 @@
-# Verdict: wire-dashboard-config
-
-## Status: PASS
-**Completion Date**: 2026-06-14
-
-## Summary
-Activated dead DashboardConfig module with GET/PUT endpoints, added server-side task cache with 1s TTL to eliminate redundant disk I/O on every polling request, wired config values (theme, default_view, auto_refresh_interval, column_width, show_timelines) into dashboard JS on init. R3 (content-length bounds) was already done in harden-dashboard-security.
-
-## Findings
-- All 126 tests pass (7 new: 3 cache, 4 config endpoint)
-- GET /api/config returns DashboardConfig as JSON
-- PUT /api/config validates, persists, and updates in-memory config
-- Task cache returns cached data within TTL, re-scans on TTL expiry
-- Review POSTinvalidates cache so next poll picks up review changes
-- Dashboard JS applies config on DOMContentLoaded before first refresh
-
-## Tasks for Review / Tie-Breaks
-- None
-
-## Score
-+10