fix issues

core/identity/application/use-cases/GetUserUseCase.test.ts

@@ -42,7 +42,7 @@ describe('GetUserUseCase', () => {
     const storedUser: StoredUser = {
       id: 'user-1',
       email: 'test@example.com',
-      displayName: 'Test User',
+      displayName: 'John Smith',
       passwordHash: 'hash',
       primaryDriverId: 'driver-1',
       createdAt: new Date(),
@@ -60,7 +60,7 @@ describe('GetUserUseCase', () => {
     const user = (callArgs as GetUserOutput).unwrap().user;
     expect(user).toBeInstanceOf(User);
     expect(user.getId().value).toBe('user-1');
-    expect(user.getDisplayName()).toBe('Test User');
+    expect(user.getDisplayName()).toBe('John Smith');
   });
 
   it('returns error when the user does not exist', async () => {