fix(infra): restore official production volume and repair directus snapshot

- Hardened docker-compose.yml to use klz-cablescom_directus-db-data volume
- Added mandatory 'relations: []' key to Directus snapshot.yaml
- Aligned internal network mappings for db connectivity

docker-compose.yml

@@ -117,6 +117,7 @@ services:
       PUBLIC_URL: ${DIRECTUS_URL:-https://cms.klz-cables.com}
       HOST: '0.0.0.0'
     networks:
+      - default
       - infra
     volumes:
       - ./directus/uploads:/directus/uploads
@@ -149,7 +150,7 @@ services:
     volumes:
       - directus-db-data:/var/lib/postgresql/data
     networks:
-      - infra
+      - default
 
 networks:
   default:
@@ -159,3 +160,5 @@ networks:
 
 volumes:
   directus-db-data:
+    external: true
+    name: klz-cablescom_directus-db-data