chore(test): проверить остановку записей и обновить backend стенда

deploy/env.test.example

@@ -3,6 +3,8 @@
 POSTGRES_PASSWORD=
 AUTH_JWT_SECRET=
 MMAPP_IMAGE_TAG=ux-673e5ba
+# Optional backend-only image tag; blank uses MMAPP_IMAGE_TAG.
+BACKEND_IMAGE_TAG=
 AUTH_REQUIRED=false
 AUTH_ISSUER=https://auth.test.local
 AUTH_PORTAL_URL=http://localhost:5175