chore(config): 新增 WebRTC 信令地址环境变量，放宽 pnpm 版本约束并移除 overrides

package.json

@@ -131,21 +131,7 @@
   },
   "engines": {
     "node": "^24.0.0",
-    "pnpm": "10.34.5"
-  },
-  "packageManager": "pnpm@10.34.5",
-  "pnpm": {
-    "overrides": {
-      "follow-redirects": "^1.16.2",
-      "source-map-js": "^1.2.2",
-      "brace-expansion@1": "^1.1.21",
-      "brace-expansion@2": "^2.1.7",
-      "brace-expansion@5": "^5.0.12",
-      "vite": "~8.2.4",
-      "fast-uri@3": "^3.1.8",
-      "@modelcontextprotocol/server@2": "~2.3.0",
-      "glob@10": "^10.5.0"
-    }
+    "pnpm": ">=10.34.5 <13"
   },
   "repository": "https://gitee.com/youlaiorg/vue3-element-admin.git",
   "author": "有来开源组织",