export default {
 async fetch(request) {
  // 确保是 GET 或 POST
  if (request.method !== 'GET' && request.method !== 'POST') {
   return new Response('Method Not Allowed', { status: 405 });
  }

  const url = new URL(request.url);
  const pathname = url.pathname;
  
  // 检查 Authorization
  const authHeader = request.headers.get('Authorization');
  if (!authHeader || !authHeader.startsWith('Bearer '))...