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/fix-verdict-pass-inference/VERDICT.md

@@ -1,27 +0,0 @@
-# Verdict: fix-verdict-pass-inference
-
-## Status: PASS
-**Completion Date**: 2026-06-22
-
-## Summary
-The fix replaces fragile substring search with structured-line parsing, aligning status.py with the dashboard's existing approach. One Low-severity edge case noted but consistent with dashboard behavior.
-
-## Findings
-- `_parse_verdict_status_line()` correctly parses `## Status:` and `- **Status**:` header lines.
-- Bug Finder noted a Low-severity edge case: `label in after_colon.upper()` is a substring match within the status value (e.g., "FAILURE" matches "FAIL"). This is consistent with the dashboard's `parse_verdict_status()` and not a practical issue since verdict statuses are always exactly "PASS", "FAIL", or "NEEDS_REVIEW".
-- Adversarial Bug Finder confirmed no additional issues.
-- No contradictions between the two reports.
-- Test coverage added: `TestVerdictPassInference` (3 tests).
-- All 242 tests pass.
-
-## Tasks for Review / Tie-Breaks
-None.
-
-## Remaining Issues
-- Low-severity substring match within status value (noted in bug report, consistent with dashboard, not blocking).
-
-## Score
-+10 (PASS)
-
-## Reviewer Comments
-