fix(backups): читать экспорт RouterOS порциями без потери данных

docs/ux-ui/acceptance/backup231-deployment.json

@@ -0,0 +1,21 @@
+{
+  "date": "2026-10-14",
+  "block": "12.5.231",
+  "backendSourceMatched": 500,
+  "compiledMatched": 1060,
+  "frontendChanged": false,
+  "services": {
+    "backend": {
+      "image": "mmapp-test/backend:ux-backup231",
+      "imageId": "sha256:a52c0243525dd141a10be8a6f615fed99faa04db16b6c250eb87879881b06133",
+      "running": true,
+      "health": "healthy"
+    },
+    "frontend": {
+      "image": "mmapp-test/frontend:ux-routing218",
+      "imageId": "sha256:ec658b9da88c19d60987be5bfc0c15fb339a0310d7a42dc761b40a70a3428c5a",
+      "running": true,
+      "health": null
+    }
+  }
+}