async function withRetry(fn, { maxRetries = 3, baseDelay = 1000, label = "operation" } = {}) {
  let lastError;
  for (let attempt = 1; attempt <= maxRetries; attempt++) {
    try {
      return await fn();
    } catch (error) {
      lastError = error;
      if (attempt < maxRetries) {
        const delay = baseDelay * Math.pow(2, attempt - 1);
        console.warn(`  ⚠ ${label} 第${attempt}次失败，${delay / 1000}s后重试...`);
        await new Promise((resolve) => setTimeout(resolve, delay));
      }
    }
  }
  throw lastError;
}

export { withRetry };