feat(ai-character): 리소스 관리 기반 정비

src/features/auth/tests/auth-api.test.ts

@@ -2,6 +2,7 @@ import { http, HttpResponse } from "msw";
 import { afterEach, describe, expect, test, vi } from "vitest";
 
 import { login, logout } from "@/features/auth/api/auth-api";
+import { UNKNOWN_API_ERROR_MESSAGE } from "@/shared/api/api-error";
 import { createApiClient } from "@/shared/api/client";
 import { server } from "@/shared/test/server";
 
@@ -77,7 +78,7 @@ describe("auth API", () => {
     const request = login(client, { email: "admin@test.com", password: "password" });
 
     // Then
-    await expect(request).rejects.toThrow("API 응답 형식이 올바르지 않습니다.");
+    await expect(request).rejects.toThrow(UNKNOWN_API_ERROR_MESSAGE);
   });
 
   test("posts logout once with Bearer and no body", async () => {