docs: update observability and deployment docs to match production stack

Update observability.md with production container table, actual init code,
and correct env var names. Update docker.md with full 10-service table and
backup/monitoring cross-references. Add explicit AAAA records to DNS tables.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs/deployment/production.md

@@ -328,7 +328,10 @@ sudo systemctl restart orion orion-celery
 
 ## Backups
 
-### Database Backup Script
+!!! tip "Docker deployment"
+    For Docker-based deployments, use the automated backup scripts (`scripts/backup.sh` and `scripts/restore.sh`) with systemd timer. See [Hetzner Server Setup — Step 17](hetzner-server-setup.md#step-17-backups).
+
+### Database Backup Script (VPS without Docker)
 
 ```bash
 sudo nano /home/orion/backup.sh
@@ -373,6 +376,9 @@ sudo -u orion crontab -e
 
 ## Monitoring
 
+!!! tip "Docker deployment"
+    For Docker-based deployments, a full Prometheus + Grafana + node-exporter + cAdvisor stack is included in `docker-compose.yml`. See [Hetzner Server Setup — Step 18](hetzner-server-setup.md#step-18-monitoring-observability) and [Observability Framework](../architecture/observability.md).
+
 ### Basic Health Check
 
 ```bash