Resolves a saved model version for the given provider. Any non-empty saved
version is accepted — model dropdowns are populated from each provider's
live models API (and the local Ollama server), so valid selections are not
limited to the curated catalog above. Only a blank version falls back to
the provider default.
Resolves a saved model version for the given provider. Any non-empty saved version is accepted — model dropdowns are populated from each provider's live models API (and the local Ollama server), so valid selections are not limited to the curated catalog above. Only a blank version falls back to the provider default.