Round 10: Add Traefik routing to monitoring services

- Added Traefik labels and routing to prometheus, grafana, loki, cadvisor
- Fixed Grafana ROOT_URL to use domain-based URL (https://grafana.${DOMAIN})
- Added uptime-kuma bypass rule in Authelia (needs initial setup)
- Updated all services to use traefik-network
- Synced domain from kelin-hass to kelin-casa across all configs
- Fixed missing tls=true label on uptime-kuma
- Note: Loki is API-only service (no web UI, accessed via Grafana)

docker-compose/dashboards.yml

@@ -2,6 +2,10 @@
 # Homepage and Homarr for homelab dashboards
 # Place in /opt/stacks/dashboards/docker-compose.yml
 
+# Service Access URLs:
+# - Homepage: https://home.${DOMAIN}
+# - Homarr: https://homarr.${DOMAIN}
+
 services:
   # Homepage - Application dashboard (AI-configurable via YAML)
   # Access at: https://home.${DOMAIN}