Removed docker-compose.prod.yml and updated docker-compose.yml to only run the frontend in Docker, with the backend now running as a systemd service on the host. Updated nginx and frontend nginx.conf to proxy API requests to the backend on the host. Added serverkit-backend.service for systemd management of the backend. Refactored install.sh and serverkit CLI to support the new architecture, including improved installation, update, and management commands.
