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/rewrite-vram-detection-python/IMPLEMENTATION.md

@@ -1,26 +0,0 @@
-# Implementation: Rewrite VRAM Detection as Python Script
-
-## Summary
-Replaced `scripts/vram_detect.sh` with `scripts/vram_detect.py`, a testable Python implementation that produces the same JSON output and fixes several bugs.
-
-## Files Changed
-- `scripts/vram_detect.py` (new)
-- `scripts/vram_detect.sh` (deleted)
-- `scripts/install.sh` — updated to run Python script and parse JSON with Python
-- `README.md` — updated references
-- `prompts/onboarding.md` — updated references and invocation
-- `prompts/decompose.md` — updated references
-- `prompts/orchestrate.md` — updated references
-
-## Bugs Fixed
-- Undefined `$headroom_pct` in manual mode.
-- Hardcoded `"headroom": 0.25` in JSON output.
-- Code-block values in `config.md` being parsed as live config.
-- GPU-counting/output ordering bug.
-- 10KB file-read limit now enforced for API config files.
-
-## Verification
-- `python scripts/vram_detect.py` runs and emits valid JSON.
-- `python scripts/vram_detect.py gpt-4o` detects 128k context.
-- `python scripts/vram_detect.py --model claude-3-5-sonnet` detects 200k context.
-- `rg "vram_detect\.sh" README.md scripts/install.sh prompts/` returns no matches.