Initial commit: Modern step-based UI for Rondevu demo

- Step-based flow: Choose action → Choose method → Enter details → Chat
- Modern design with clean header and footer
- GitHub links with icons to client and server repos
- Footer link to ronde.vu
- Three connection methods: Topic, Peer ID, Connection ID
- Real WebRTC peer-to-peer chat
- Mobile-responsive design
- Collapsible activity log

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

package.json

@@ -0,0 +1,23 @@
+{
+  "name": "rondevu-demo",
+  "version": "1.0.0",
+  "description": "Demo application for Rondevu peer signaling and discovery",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "preview": "vite preview",
+    "deploy": "npm run build && npx wrangler pages deploy dist --project-name=rondevu-demo"
+  },
+  "dependencies": {
+    "@xtr-dev/rondevu-client": "file:../client",
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0"
+  },
+  "devDependencies": {
+    "@types/react": "^18.2.0",
+    "@types/react-dom": "^18.2.0",
+    "@vitejs/plugin-react": "^4.2.1",
+    "vite": "^5.4.11"
+  }
+}