feat: Add comprehensive restart policy documentation and Sablier lazy loading support

- Add SERVER_HOSTNAME env var for Sablier group naming
- Update default hostname from 'jarvis' to 'debian' for generic repo compatibility
- Add restart policy documentation to all docker-compose files
- Add Sablier labels to lazy-loaded services (jellyfin, dozzle, glances, code-server, homarr, dokuwiki)
- Update sablier.yml template to use debian- prefixes
- Enhance deploy script to auto-detect hostname and update configurations
- Ensure all YAML files remain syntactically valid

docker-compose/utilities/docker-compose.yml

@@ -1,6 +1,11 @@
 # Backup and Utility Services
 # Place in /opt/stacks/utilities/docker-compose.yml
 
+# RESTART POLICY GUIDE:
+# - unless-stopped: Core infrastructure services that should always run
+# - no: Services with Sablier lazy loading (start on-demand)
+# - See individual service comments for specific reasoning
+
 # Service Access URLs:
 # - Backrest: https://backrest.${DOMAIN}
 # - Duplicati: https://duplicati.${DOMAIN}