- Update GitLab to latest image and configure for HTTPS via Traefik
- Update pgAdmin to latest image and add Traefik routing
- Update Jupyter to latest image and add Traefik routing
- Add traefik-network to all web-accessible services
- Configure unique hostnames: gitlab, pgadmin, jupyter
- Remove direct port exposure in favor of Traefik reverse proxy
- Update service descriptions and access URLs