Refactor deployment scripts to separate standalone and swarm modes

- Remove ambiguous docker-compose-deploy.yml and debug-deploy.sh
- Update deploy-standalone.sh to use docker-compose-standalone.yaml
- Update deploy-swarm.sh to use docker-compose-swarm.yml
- Standardize error messages to English in deployment scripts
- Add db-backup-swarm.sh for swarm-specific backups
- Unify network naming to util-bills-mongo-network across configs
- Fix MongoDB credentials in swarm compose file

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

docker-compose-standalone.yaml

@@ -6,19 +6,17 @@ networks:
     name: traefik-network
     external: true
   util-bills-mongo-network:
-    name: util-bills-mongo-network
-    internal: true   # bridge network, isolated from host and other networks
+    name: "util-bills-mongo-network"
+    attachable: false
+    external: false
+    internal: true # bridge network, isolated from host and other networks
 
 services:
   web-app:
     image: utility-bills-tracker:${IMAGE_VERSION}
-    container_name: evidencija-rezija__web-app
-    restart: unless-stopped  # u slučaju rušenja containera pokušavaj ga pokrenuti dok ne uspije = BESKONAČNO
     networks:
       - traefik-network
       - util-bills-mongo-network
-    depends_on:
-      - mongo
     volumes:
       - ./etc/hosts/:/etc/hosts
     environment:
@@ -28,9 +26,13 @@ services:
       AUTH_SECRET: Gh0jQ35oq6DR8HkLR3heA8EaEDtxYN/xkP6blvukZ0w=
       LINKEDIN_ID: 776qlcsykl1rag
       LINKEDIN_SECRET: ugf61aJ2iyErLK40
-      HOSTNAME: rezije.app  # IP address at which the server will be listening (0.0.0.0 = listen on all addresses)
+      HOSTNAME: rezije.app # IP address at which the server will be listening (0.0.0.0 = listen on all addresses)
       NEXTAUTH_URL: https://rezije.app # URL next-auth will use while redirecting user during authentication (if not set - will use HOSTNAME)
       PORT: ${PORT:-80}
+    container_name: evidencija-rezija__web-app
+    restart: unless-stopped  # u slučaju rušenja containera pokušavaj ga pokrenuti dok ne uspije = BESKONAČNO
+    depends_on:
+      - mongo
     labels:
       - traefik.enable=true
       - traefik.docker.network=traefik-network # mreže preko koje ide komunikacija sa Traefikom
@@ -49,20 +51,19 @@ services:
       - ./mongo-volume:/data/db
     networks:
       - util-bills-mongo-network
-
   mongo-express:
     image: mongo-express
-    container_name: evidencija-rezija__mongo-express
-    restart: unless-stopped
-    networks:
-      - traefik-network
-      - util-bills-mongo-network
-    depends_on:
-      - mongo
     environment:
       ME_CONFIG_MONGODB_ADMINUSERNAME: root
       ME_CONFIG_MONGODB_ADMINPASSWORD: HjktJCPWMBtM1ACrDaw7
       ME_CONFIG_MONGODB_URL: mongodb://root:HjktJCPWMBtM1ACrDaw7@mongo:27017/
+    networks:
+      - traefik-network
+      - util-bills-mongo-network
+    container_name: evidencija-rezija__mongo-express
+    restart: unless-stopped
+    depends_on:
+      - mongo
     labels:
       - traefik.enable=true
       - traefik.docker.network=traefik-network # mreže preko koje ide komunikacija sa Traefikom