Two related bugs prevented users from reliably switching providers: 1. OPENAI_BASE_URL poisoning OpenRouter resolution: When a user with a custom endpoint ran /model openrouter:model, _resolve_openrouter_runtime picked up OPENAI_BASE_URL instead of the OpenRouter URL, causing model validation to probe the wrong API and reject valid models. Fix: skip OPENAI_BASE_URL when requested_provider is explicitly 'openrouter'. 2. Provider never saved to config: _save_model_choice() could save config.model as a plain string. All five _model_flow_* functions then checked isinstance(model, dict) before writing the provider — which silently failed on strings. With no provider in config, auto-detection would pick up stale credentials (e.g. Codex desktop app) instead of the user's explicit choice. Fix: _save_model_choice() now always saves as dict format. All flow functions also normalize string->dict as a safety net before writing provider. Adds 4 regression tests. 2873 tests pass.
76 KiB
76 KiB