feat: 统一页面布局与字体样式

backend/src/app.ts

@@ -9,7 +9,15 @@ import { apiLimiter } from './middleware/rateLimit'
 const app = express()
 
 app.use(helmet())
-app.use(compression())
+app.use(compression({
+  filter: (req, res) => {
+    // SSE 流式响应不压缩，避免缓冲导致前端一次性收到所有数据
+    if (req.headers['accept'] === 'text/event-stream' || res.getHeader('Content-Type') === 'text/event-stream') {
+      return false
+    }
+    return compression.filter(req, res)
+  },
+}))
 app.use(
   cors({
     origin: process.env.CORS_ORIGIN || 'http://localhost:5173',