🔧 chore(package.json): 优化启动脚本配置

- 将 `start` 脚本简化为调用子目录的 `pnpm start` 命令，提升可维护性

package.json

@@ -8,7 +8,7 @@
     "dev:web": "cd web && PORT=8080 node server",
     "dev:mini": "cd mini && pnpm run dev:h5",
     "dev:weapp": "cd mini && pnpm run dev:weapp",
-    "start": "cd web && PORT=8080 NODE_ENV=production node server",
+    "start": "cd web && pnpm start",
     "build": "pnpm -r run build",
     "test": "pnpm -r run test",
     "lint": "pnpm -r run lint",