providers

type Options struct {
	UserAgent     string
	HTTPClient    *http.Client
	ModelRegistry *modelregistry.Registry
	// OAuthResolver, when set, lets the provider authenticate model calls with an
	// OAuth bearer token (preferred over the API key). nil => API-key auth only.
	// Applied to the OpenAI, Anthropic, and Google (Gemini) providers.
	OAuthResolver providerio.TokenResolver
	// OAuthLoginKey is the credential-store key OAuthResolver bound to (empty when
	// there is no OAuth login). It is the SAME selection the bearer resolver made,
	// resolved ONCE by the caller so the Codex chatgpt-account-id header reads its
	// account from the exact login that issued the bearer token — never a second,
	// independent lookup that could pick a different login (a backend-rejected
	// mismatch).
	OAuthLoginKey string
}

type RuntimeMetadata struct {
	ProviderKind config.ProviderKind
	APIModel     string
}