fix: mock api-logger and api-logging.plugin in cloudHandler-sync test

The DailyRotateFile transport in api-logger.ts creates directories at
module load time. When the paths mock returns '/mock/agent/dir', the
real file-stream-rotator fails with EACCES on CI Linux runners.

Added vi.mock for both api-logger and api-logging.plugin to prevent
the real DailyRotateFile from initializing during tests.

src/tests/unit/cloudHandler-sync.test.ts

@@ -85,6 +85,20 @@ vi.mock('../../utils/traffic-logger', () => ({
   },
 }));
 
+vi.mock('../../server/logging/api-logger', () => ({
+  apiLogger: {
+    info: vi.fn(),
+    warn: vi.fn(),
+    error: vi.fn(),
+    debug: vi.fn(),
+  },
+  safeApiLogValue: vi.fn((v: unknown) => v),
+}));
+
+vi.mock('../../server/logging/api-logging.plugin', () => ({
+  registerApiLogging: vi.fn(),
+}));
+
 vi.mock('../../services/GoogleAPIService', () => ({
   GoogleAPIService: {
     getUserInfo: vi.fn(),