return normalizeProviderId(value.trim().slice(0, slashIndex));

}

/** Returns true when a model ref is explicitly OpenAI-qualified. */

export function modelRefUsesOpenAIProvider(value: unknown): boolean {

return parseModelRefProvider(value) === OPENAI_PROVIDER_ID;

}

/** Returns true when selected model config should ensure the Codex plugin exists. */

export function modelSelectionShouldEnsureCodexPlugin(params: {

model?: string;