feat(iframe): add iframe bridge for ragflow integration

- Implement Penpal-based iframe communication bridge between host and child apps
- Add route handling for ragflow integration with '/route-ragflow' prefix
- Update navigation hooks to support embedded mode via iframe bridge
- Configure build and dependencies for new iframe-bridge package
- Adjust nginx config for proper SPA routing in subpath deployments

package.json

@@ -5,12 +5,14 @@
   "type": "module",
   "scripts": {
     "dev": "vite",
-    "dev:both": "pnpm -r --parallel --filter teres_web_frontend --filter ragflow_web run dev",
+    "dev:ragflow": "pnpm -r --filter ragflow_web run dev",
     "build": "tsc -b && vite build",
     "lint": "eslint .",
     "preview": "vite preview"
   },
   "dependencies": {
+    "@teres/iframe-bridge": "workspace:*",
+    "penpal": "^6.2.1",
     "@emotion/react": "^11.14.0",
     "@emotion/styled": "^11.14.1",
     "@mui/icons-material": "^7.3.4",