it("throws structured HTTP errors after releasing guarded fetches", async () => {

const release = vi.fn(async () => undefined);

const response = new Response("{}", { status: 401 });

const cancel = vi.spyOn(response.body!, "cancel").mockResolvedValue(undefined);

const fetchGuardMock: MockedFunction<LiveModelCatalogFetchGuard> = vi.fn(async () => ({

response: new Response("{}", { status: 401 }),

response,

finalUrl: "https://provider.example.test/v1/models",

release,

}));

expect(error).toBeInstanceOf(LiveModelCatalogHttpError);

expect(error).toMatchObject({ status: 401 });

expect(cancel).toHaveBeenCalledOnce();

expect(release).toHaveBeenCalledTimes(1);

});