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>

CLAUDE.md

@@ -18,22 +18,30 @@ pnpm install
 pnpm start  # Production mode
 pnpm dev    # Development mode with auto-reload
 
-# Docker commands
-pnpm docker:build  # Build Docker image
-pnpm docker:run    # Run Docker container with auto-restart
+# Docker Compose (recommended)
+pnpm up     # Start bot with Docker Compose
+pnpm down   # Stop bot
+pnpm restart # Restart bot (useful after config changes)
+pnpm logs   # View logs
+pnpm build  # Rebuild image
+
+# Direct Docker (alternative)
+pnpm image:build  # Build Docker image
+pnpm image:run    # Run Docker container with auto-restart
 ```
 
 ### Docker Management
 
 ```bash
-# Stop and remove container
-docker stop ghbot && docker rm ghbot
+# Docker Compose approach (recommended)
+pnpm up && pnpm logs     # Start and follow logs
+pnpm restart             # Restart after config changes
+pnpm build && pnpm up    # Rebuild after code changes
 
-# View logs
-docker logs ghbot -f
-
-# Rebuild and restart
-docker stop ghbot && docker rm ghbot && pnpm docker:build && pnpm docker:run
+# Direct Docker approach
+docker stop discord-bot && docker rm discord-bot
+docker logs discord-bot -f
+pnpm image:build && pnpm image:run
 ```
 
 ## Architecture & Key Components