Add Node.js test script for connecting to @bas

Adds test-connect.js script that:
- Connects to production Rondevu API
- Discovers chat service from @bas
- Establishes WebRTC connection using wrtc
- Sends 'hello' message via data channel

Usage: npm test

Requires:
- Node.js 19+ (or 18 with --experimental-global-webcrypto)
- wrtc package for WebRTC in Node.js

🤖 Generated with Claude Code
https://claude.com/claude-code

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

package.json

@@ -7,7 +7,8 @@
     "dev": "vite",
     "build": "vite build",
     "preview": "vite preview",
-    "deploy": "npm run build && npx wrangler pages deploy dist --project-name=rondevu-demo"
+    "deploy": "npm run build && npx wrangler pages deploy dist --project-name=rondevu-demo",
+    "test": "node test-connect.js"
   },
   "dependencies": {
     "@xtr-dev/rondevu-client": "file:../client",
@@ -15,7 +16,8 @@
     "qrcode": "^1.5.4",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
-    "react-hot-toast": "^2.6.0"
+    "react-hot-toast": "^2.6.0",
+    "wrtc": "^0.4.7"
   },
   "devDependencies": {
     "@types/react": "^18.2.0",