refactor: 重构获取anonymous token以及xeapikey的获取

app.js

@@ -1,14 +1,7 @@
 #!/usr/bin/env node
-const fs = require('fs')
-const path = require('path')
-const tmpPath = require('os').tmpdir()
 
 async function start() {
-  // 检测是否存在 anonymous_token 文件,没有则生成
-  if (!fs.existsSync(path.resolve(tmpPath, 'anonymous_token'))) {
-    fs.writeFileSync(path.resolve(tmpPath, 'anonymous_token'), '', 'utf-8')
-  }
-  // 启动时更新anonymous_token
+  // 启动时预热运行时凭证（纯内存，不依赖 /tmp 等可写文件系统）
   const generateConfig = require('./generateConfig')
   await generateConfig()
   require('./server').serveNcmApi({