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/fix-status-script-bugs/IMPLEMENTATION.md

@@ -0,0 +1,13 @@
+# IMPLEMENTATION.md — Fix Status Script Bugs
+
+## Changes Made
+- `scripts/status.py:504-510`: Removed neutered target-phase artifact check (restored `pass` — analysis showed it's redundant with current-phase check at 525-531)
+- `scripts/status.py:1007,1061`: Removed dead double `continue` statements
+- `scripts/status.py:523`: Changed `cmd_approve` to use `_require_state` instead of `_read_state` for consistency
+- `scripts/status.py:1088-1095`: Added `cmd_list_states` function and `--list-states` CLI argument
+
+## How It Works
+- `--list-states` prints all valid phases with approval requirements noted
+- Double continue dead code removed
+- cmd_approve rejects untracked tasks consistently
+- Target-phase check restored to `pass` (existing checks cover the cases correctly)