fix(db): исправить импорт jsonb из sqlite

JSON-колонки передаются строкой с приведением ::jsonb, иначе node-pg кодирует массивы как PostgreSQL array и ETL падает. Повтор импорта идёт, пока нет маркера. Том PG18 монтируется в /var/lib/postgresql.

Co-authored-by: Cursor <[email protected]>

backend/package.json

@@ -17,7 +17,7 @@
     "test:traffic-rate": "tsx src/services/traffic-rate.test.ts",
     "test:traffic-flow": "tsx src/services/traffic-flow-parse.test.ts && tsx src/services/traffic-flow-map-exporter.test.ts && tsx src/services/traffic-flow-ifaces.test.ts && tsx src/services/traffic-flow-dedup.test.ts && tsx src/services/traffic-flow-planes.test.ts && tsx src/services/traffic-flow-ip.test.ts && tsx src/services/traffic-flow-classify.test.ts && tsx src/services/traffic-flow-ripe.test.ts && tsx src/services/traffic-flow-brands.test.ts && tsx src/services/traffic-flow-ingest.test.ts && tsx src/services/traffic-flow-analytics.test.ts && tsx src/services/traffic-flow-map-hops.test.ts && tsx src/services/traffic-flow-purge.test.ts",
     "test:users": "tsx src/modules/users/iface-type.test.ts && tsx src/modules/users/bindings.test.ts",
-    "test:pg": "tsx src/db/sql-bind.test.ts && tsx src/db/pg-schema.test.ts",
+    "test:pg": "tsx src/db/sql-bind.test.ts && tsx src/db/sqlite-json.test.ts && tsx src/db/pg-schema.test.ts",
     "test": "npm run test:alert-engine && npm run test:auth && npm run test:wireguard && npm run test:traffic-rate && npm run test:traffic-flow && npm run test:users && npm run test:pg"
   },
   "dependencies": {