docs: replace DEPLOYMENT.md with TROUBLESHOOTING.md and update README

- Remove redundant DEPLOYMENT.md file
- Update README.md to reference TROUBLESHOOTING.md for deployment issues
- Consolidate deployment documentation into comprehensive troubleshooting guide
- Keep essential auto-starting services info in README for quick reference

README.md

@@ -284,25 +284,8 @@ go test ./cmd/server/tests -v  # Integration tests only
 
 ## 🐳 Deployment
 
-### Docker Configuration
-```yaml
-# docker-compose.yml
-services:
-  bookmann:
-    build: .
-    ports:
-      - "8765:8765"
-    environment:
-      - JWT_SECRET=${JWT_SECRET}
-      - DBHOST=db
-    depends_on:
-      - db
-    volumes:
-      - /path/to/media:/media  # Mount media directories
-      - /path/to/uploads:/uploads  # Upload directory
-```
+For detailed deployment instructions, Docker configuration, and troubleshooting common issues, see **[TROUBLESHOOTING.md](TROUBLESHOOTING.md)**.
 
-### Auto-Starting Services
 The application automatically starts background services on startup:
 - **Scheduler**: Manages scheduled scanning jobs based on user settings
 - **Watch Mode**: Monitors all library folders for file system changes