Function persistApiKey

src/auth/setup.ts:103–108

(config: Config, key: string)

}

async function persistApiKey(config: Config, key: string): Promise<void> {
  const data = { ...(readConfigFile() as Record<string, unknown>), api_key: key };
  await writeConfigFile(data);
  config.fileApiKey = key;
  process.stderr.write(`API key saved to ${config.configPath ?? '~/.mmx/config.json'}\n`);
}

// Legacy alias kept so main.ts keeps working without churn.
export const ensureApiKey = ensureAuth;