Add TOML-based config resolution with 7-level priority chain:
CLI flags > env var > user preference > directory preference >
directory default > user default > hardcoded fallback.
New commands: llm-default (view/set/clear defaults), llm-preference
(view/set/clear preferences). Each shows only its own scope. llm-check
now displays source attribution for resolved provider/model.
Existing commands (llm-helper, llm-check) refactored to use
resolve_llm() instead of manual resolution. Hardcoded fallback
changed from openrouter/aurora-alpha to gemini/gemini-2.5-flash
due to persistent OpenRouter 502 errors.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
tegwick
5085c44de3