test(api): add normalizeAgentResumePatchOperations to ./resume mock

service.ts calls it (added in 82d961241, merged from origin/main) but the
mock omitted it, breaking the patch-apply test. Identity mock matches the
test's pass-through expectation.

Claude-Session: https://claude.ai/code/session_012Bnvt1MghwHj4qQRxuQUGa

packages/api/src/features/agent/service.test.ts

@@ -113,6 +113,7 @@ vi.mock("../storage/service", () => ({
 vi.mock("./resume", () => ({
 	buildAgentDraftResumeName: vi.fn(),
 	buildUniqueAgentDraftSlug: vi.fn(),
+	normalizeAgentResumePatchOperations: vi.fn((_data, operations) => operations),
 }));
 vi.mock("./runs", () => ({
 	claimActiveAgentRun: claimActiveAgentRunMock,