Add Docker Compose setup and clean up legacy code

- Add docker-compose.yml with volume mounts for config/sfx
- Simplify npm scripts (up/down/build/restart/logs)
- Update README.md and CLAUDE.md with new commands
- Remove unused lib/ directory (migrated to src/)
- Update package.json scripts to cleaner naming

Benefits:
- Update configs and sound effects without rebuilding image
- Simplified Docker workflow management
- Cleaner project structure

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

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

docker-compose.yml

@@ -0,0 +1,62 @@
+version: '3.8'
+
+services:
+  discord-bot:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    container_name: discord-bot
+    restart: unless-stopped
+    volumes:
+      # Configuration files (read-only)
+      - ./config.json:/app/config.json:ro
+      - ./conf:/app/conf:ro
+      
+      # Sound effects directory (read-only)
+      - ./sfx:/app/sfx:ro
+      
+      # Optional: Mount logs directory if you want persistent logs
+      # - ./logs:/app/logs
+    
+    # Optional: Environment variables
+    environment:
+      - NODE_ENV=production
+      # - DEBUG=true  # Uncomment for debug mode
+    
+    # Optional: Resource limits
+    deploy:
+      resources:
+        limits:
+          memory: 512M
+        reservations:
+          memory: 256M
+    
+    # Optional: Health check
+    healthcheck:
+      test: ["CMD", "node", "-e", "process.exit(0)"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 40s
+
+  # Optional: Add a volume backup service
+  # backup:
+  #   image: alpine:latest
+  #   container_name: ghbot-backup
+  #   volumes:
+  #     - ./config.json:/backup/config.json:ro
+  #     - ./conf:/backup/conf:ro
+  #     - ./sfx:/backup/sfx:ro
+  #   command: |
+  #     sh -c "
+  #       echo 'Creating backup...'
+  #       tar czf /backup/ghbot-backup-$(date +%Y%m%d_%H%M%S).tar.gz -C /backup config.json conf sfx
+  #       echo 'Backup complete'
+  #     "
+  #   profiles:
+  #     - backup
+
+# Optional: Create named volumes for persistent data
+# volumes:
+#   ghbot_logs:
+#     driver: local