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/portainer/docker-compose.yml

@@ -0,0 +1,13 @@
+# Portainer CE — Docker UI (poorten 8000, 9000).
+
+services:
+  portainer:
+    image: portainer/portainer-ce:latest
+    container_name: portainer
+    restart: always
+    ports:
+      - "${PORTAINER_EDGE:-8000}:8000"
+      - "${PORTAINER_HTTP:-9000}:9000"
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+      - ${PORTAINER_DATA_DIR:-/volume1/docker/portainer}:/data