feat: implement dynamic P2P polling app with real-time synchronization

- Add complete P2P polling application with React + TypeScript frontend
- Implement Node.js backend with Yjs WebSocket and WebRTC signaling
- Support dynamic poll creation, answer management, and voting
- Add CRDT-based state synchronization using Yjs for conflict-free merging
- Implement user tracking and vote prevention (one vote per user per option)
- Create modern UI with Tailwind CSS and visual feedback
- Add comprehensive documentation and setup instructions

Features:
- Users can create polls with custom questions
- Anyone can add answer options to any poll
- Real-time voting with instant cross-client synchronization
- Smart vote tracking with visual feedback for voted options
- User attribution showing who created polls and options
- Connection status indicators for WebSocket and P2P connections

Technical:
- Hybrid P2P architecture (WebSocket + WebRTC)
- CRDT-based state management with Yjs

frontend/tsconfig.node.json

@@ -0,0 +1,10 @@
+{
+  "compilerOptions": {
+    "composite": true,
+    "skipLibCheck": true,
+    "module": "ESNext",
+    "moduleResolution": "bundler",
+    "allowSyntheticDefaultImports": true
+  },
+  "include": ["vite.config.ts"]
+}