refactor: align frontend ownership boundaries

Close audit gaps across API drift, query policy, UI, and tests.

src/features/tbank-connection/model/connection-boundary.ts

@@ -1,6 +1,5 @@
 import type { QueryClient } from "@tanstack/react-query";
-import { apiQueryClient } from "@/shared/api";
-import type { paths } from "@/shared/api/generated/schema";
+import { apiQueryClient, type paths } from "@/shared/api";
 
 type TbankConnectionStatus =
 	paths["/api/v1/tbank-connection"]["get"]["responses"][200]["content"]["application/json"];