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/phase-scoped-prompts/VERDICT.md

@@ -1,27 +0,0 @@
-# VERDICT: Phase-Scoped Prompts
-
-
-## Status: PASS
-## Summary
-Added ALLOWED/FORBIDDEN sections to all 9 phase prompts, approval gates for research/design/decompose/test_design, user override resistance instructions, pre-work validation via `--validate-folder`, and `.state` precondition checks. orchestrate.md reduced from 493 to 143 lines by removing duplicated state machine logic.
-
-## Phase Results
-| Phase | Result |
-|-------|--------|
-| Implementation | ✅ PASS |
-| Bug Find | ✅ PASS (1 minor finding — decompose.md over 150 lines) |
-| Adversarial Bug Find | ✅ PASS |
-| Doc Review | ✅ PASS |
-
-## Findings
-- All 9 prompts have ALLOWED/FORBIDDEN sections
-- Approval gates correctly placed only in research, decomposition, design, test_design
-- User override resistance instructions added to all prompts
-- Pre-work validation (`--validate-folder`) mandated in all prompts
-- orchestrate.md reduced from 493 to 143 lines (71% reduction)
-- Minor: decompose.md exceeds 150-line soft target — content is necessary
-
-## Final Verdict
-**PASS** — All acceptance criteria met. Phase scoping is complete and consistent across all prompts.
-
-Score: +10