Revert "refactor: 优化serverless入口文件"

This reverts commit 1db354464f.

app.js

@@ -8,9 +8,11 @@ async function start() {
   if (!fs.existsSync(path.resolve(tmpPath, 'anonymous_token'))) {
     fs.writeFileSync(path.resolve(tmpPath, 'anonymous_token'), '', 'utf-8')
   }
-  // 启动时更新anonymous_token
-  const generateConfig = require('./generateConfig')
-  await generateConfig()
+  // 启动时更新anonymous_token（Vercel 构建环境下跳过网络请求喵~）
+  if (!process.env.VERCEL_ENV) {
+    const generateConfig = require('./generateConfig')
+    await generateConfig()
+  }
   require('./server').serveNcmApi({
     checkVersion: true,
   })