refactor: align frontend ownership boundaries

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

src/entities/brokerage-account/api/useBrokerageAccounts.ts

@@ -1,5 +1,8 @@
-import { apiQueryClient, useAuthenticatedQuery } from "@/shared/api";
-import type { paths } from "@/shared/api/generated/schema";
+import {
+	apiQueryClient,
+	type paths,
+	useAuthenticatedQuery,
+} from "@/shared/api";
 
 const brokerageAccountsQueryOptions = () =>
 	apiQueryClient.queryOptions("get", "/api/v1/brokerage-accounts");
@@ -13,7 +16,6 @@ function useBrokerageAccounts() {
 	return useAuthenticatedQuery({
 		...brokerageAccountsQueryOptions(),
 		staleTime: 60_000,
-		retry: false,
 	});
 }