feat: 文件清单与图片预览的 P2P 部分挪到浏览器端(WebRTC)，服务端仅缓存兜底

nuxt.config.ts

@@ -1,3 +1,5 @@
+import nodePolyfills from 'vite-plugin-node-polyfills'
+
 export default defineNuxtConfig({
   compatibilityDate: '2025-07-15',
   devtools: { enabled: false },
@@ -27,6 +29,12 @@ export default defineNuxtConfig({
     }
   },
   vite: {
+    plugins: [
+      nodePolyfills({
+        globals: { Buffer: true, global: true, process: true },
+        protocolImports: true
+      })
+    ],
     server: {
       fs: { strict: false }
     }