feat: Initial project structure for WebTriviasMulti

- Backend: FastAPI + Python-SocketIO + SQLAlchemy
  - Models for categories, questions, game sessions, events
  - AI services for answer validation and question generation (Claude)
  - Room management with Redis
  - Game logic with stealing mechanics
  - Admin API for question management

- Frontend: React + Vite + TypeScript + Tailwind
  - 5 visual themes (DRRR, Retro, Minimal, RGB, Anime 90s)
  - Real-time game with Socket.IO
  - Achievement system
  - Replay functionality
  - Sound effects per theme

- Docker Compose for deployment
- Design documentation

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

backend/requirements.txt

@@ -0,0 +1,37 @@
+# FastAPI
+fastapi==0.109.0
+uvicorn[standard]==0.27.0
+python-multipart==0.0.6
+
+# WebSockets
+python-socketio==5.11.0
+
+# Database
+sqlalchemy==2.0.25
+asyncpg==0.29.0
+alembic==1.13.1
+psycopg2-binary==2.9.9
+
+# Redis
+redis==5.0.1
+aioredis==2.0.1
+
+# Authentication
+python-jose[cryptography]==3.3.0
+passlib[bcrypt]==1.7.4
+
+# AI
+anthropic==0.18.1
+
+# Utilities
+pydantic==2.6.0
+pydantic-settings==2.1.0
+python-dotenv==1.0.0
+
+# Scheduler
+apscheduler==3.10.4
+
+# Testing
+pytest==8.0.0
+pytest-asyncio==0.23.4
+httpx==0.26.0