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-vram-model-prefix-match/IMPLEMENTATION.md

@@ -0,0 +1,24 @@
+# Implementation: fix-vram-model-prefix-match
+
+## Bug
+`_lookup_model_context()` in `vram_detect.py` used raw `startswith()` for model name matching, causing false positives like `phi-4` matching `phi-40` or `phi-4-mini-instruct` (a different model with different context window).
+
+## Fix
+Replaced the raw `startswith()` with a three-tier matching strategy:
+1. **Exact match** — `name_lower == key_lower`
+2. **Ollama parameter tag** — `name_lower.startswith(key_lower + ":")` (e.g. `deepseek-r1:7b` matches `deepseek-r1`)
+3. **Known instruction-tuning suffix** — `name_lower.startswith(key_lower + "-")` only if the next segment is in `_KNOWN_MODEL_SUFFIXES = {"instruct", "chat", "it", "fp16", "f16", "bf16"}` (e.g. `llama-3.1-8b-instruct` matches `llama-3.1-8b`)
+
+Keys are sorted by length descending so the most specific match wins first.
+
+This prevents false matches:
+- `phi-4-mini-instruct` → `mini` not in known suffixes → no match ✓
+- `gpt-4o-foo-unknown` → `foo` not in known suffixes → no match ✓
+- `phi-40` → no `:` or known-suffix separator → no match ✓
+
+## Files Changed
+- `scripts/vram_detect.py`: Added `_KNOWN_MODEL_SUFFIXES` set, rewrote `_lookup_model_context()` with three-tier matching
+
+## Tests
+- `test_lookup_model_context_no_false_prefix_match`: Asserts `phi-4-mini-instruct` and `gpt-4o-foo-unknown` return 0
+- Existing `test_lookup_model_context_prefix_match` still passes (deepseek-r1:7b and llama-3.1-8b-instruct)