refactor: align frontend ownership boundaries

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

src/shared/api/authenticated-query.test.tsx

@@ -1,31 +1,12 @@
-import { MantineProvider } from "@mantine/core";
-import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
 import { renderHook, waitFor } from "@testing-library/react";
 import { HttpResponse, http } from "msw";
-import type { FC, PropsWithChildren } from "react";
-import { afterEach, describe, expect, it, vi } from "vitest";
+import { describe, expect, it, vi } from "vitest";
+import { createQueryWrapper } from "@/test/query";
 import { server } from "@/test/server";
 import { useAuthenticatedQuery } from "./authenticated-query";
 import { apiQueryClient, configureAuthClient } from "./client";
 
-function createWrapper() {
-	const client = new QueryClient();
-	const TestWrapper: FC<PropsWithChildren> = (props) => {
-		const { children } = props;
-
-		return (
-			<MantineProvider>
-				<QueryClientProvider client={client}>{children}</QueryClientProvider>
-			</MantineProvider>
-		);
-	};
-
-	return TestWrapper;
-}
-
 describe("useAuthenticatedQuery", () => {
-	afterEach(() => configureAuthClient(null));
-
 	it("keeps protected queries idle without a session and loads after session configuration", async () => {
 		const requests = vi.fn();
 		server.use(
@@ -47,7 +28,7 @@ describe("useAuthenticatedQuery", () => {
 				useAuthenticatedQuery(
 					apiQueryClient.queryOptions("get", "/api/v1/brokerage-accounts"),
 				),
-			{ wrapper: createWrapper() },
+			{ wrapper: createQueryWrapper().wrapper },
 		);
 
 		await new Promise((resolve) => setTimeout(resolve, 0));

src/shared/api/client.test.ts

@@ -1,11 +1,9 @@
 import { HttpResponse, http } from "msw";
-import { afterEach, describe, expect, it, vi } from "vitest";
+import { describe, expect, it, vi } from "vitest";
 import { server } from "@/test/server";
 import { apiClient, configureAuthClient } from "./client";
 
 describe("apiClient authentication", () => {
-	afterEach(() => configureAuthClient(null));
-
 	it("refreshes once and retries an unauthorized protected request", async () => {
 		let token = "expired";
 		const refresh = vi.fn(async () => {

src/shared/api/generated/schema.d.ts

@@ -232,7 +232,7 @@ export interface components {
         TbankConnectionStatusDto: {
             connected: boolean;
             /** Format: date-time */
-            connectedAt: Record<string, never> | null;
+            connectedAt: string | null;
         };
         PutTbankConnectionDto: {
             token: string;

src/shared/api/index.ts

@@ -1,2 +1,4 @@
 export { useAuthenticatedQuery } from "./authenticated-query";
 export { apiClient, apiQueryClient, configureAuthClient } from "./client";
+export type { paths } from "./generated/schema";
+export { apiErrorCode } from "./problem-details";

src/shared/api/problem-details.ts

@@ -0,0 +1,7 @@
+function apiErrorCode(error: unknown): string | undefined {
+	return typeof error === "object" && error !== null && "code" in error
+		? String(error.code)
+		: undefined;
+}
+
+export { apiErrorCode };

src/shared/api/spec/openapi.json

@@ -1275,7 +1275,7 @@
             "type": "boolean"
           },
           "connectedAt": {
-            "type": "object",
+            "type": "string",
             "nullable": true,
             "format": "date-time"
           }
@@ -1960,4 +1960,4 @@
       }
     }
   }
-}
+}