Add full NAS service catalog for disaster recovery.

Compose files and configs for postgres, adguard, duckdns, homarr, neo4j,
portainer, remotely, and monitoring; RESTORE.md and sync-from-nas script.
Sanitize pgAdmin secrets; document homelab-command as separate repo.

Co-authored-by: Cursor <cursoragent@cursor.com>

docker/adguard/docker-compose.yml

@@ -0,0 +1,21 @@
+# AdGuard Home — DNS + filtering (host network, poort 53 + web UI).
+# Config: configs/adguard/AdGuardHome.yaml → mount naar /opt/adguardhome/conf
+
+services:
+  adguard:
+    image: adguard/adguardhome:latest
+    container_name: Adguard
+    restart: always
+    network_mode: host
+    volumes:
+      - ${ADGUARD_CONFIG_DIR:-/volume1/docker/Configs/adguard}:/opt/adguardhome/conf
+      - adguard-work:/opt/adguardhome/work
+    command:
+      - --no-check-update
+      - -c
+      - /opt/adguardhome/conf/AdGuardHome.yaml
+      - -w
+      - /opt/adguardhome/work
+
+volumes:
+  adguard-work: