refactor(frontend): adapt to RESTful API routes

apps/test/features/auth/presentation/cubits/register_cubit_test.dart

@@ -65,12 +65,8 @@ void main() {
         password: const Password.dirty('password123'),
       ),
       setUp: () {
-        when(() => mockRepository.signupStart(any())).thenAnswer(
-          (_) async => SignupStartResponse(
-            status: 'ok',
-            email: 'test@example.com',
-            message: 'Code sent',
-          ),
+        when(() => mockRepository.createVerification(any())).thenAnswer(
+          (_) async => VerificationCreateResponse(email: 'test@example.com'),
         );
       },
       act: (c) => c.sendCodeSilently(),
@@ -85,7 +81,7 @@ void main() {
         ),
       ],
       verify: (_) {
-        verify(() => mockRepository.signupStart(any())).called(1);
+        verify(() => mockRepository.createVerification(any())).called(1);
       },
     );
 
@@ -99,7 +95,7 @@ void main() {
       ),
       setUp: () {
         when(
-          () => mockRepository.signupStart(any()),
+          () => mockRepository.createVerification(any()),
         ).thenThrow(ServerException('Network error'));
       },
       act: (c) => c.sendCodeSilently(),
@@ -113,12 +109,12 @@ void main() {
         ),
       ],
       verify: (_) {
-        verify(() => mockRepository.signupStart(any())).called(1);
+        verify(() => mockRepository.createVerification(any())).called(1);
       },
     );
 
     blocTest<RegisterCubit, RegisterState>(
-      'does not call signupStart when input is invalid',
+      'does not call createVerification when input is invalid',
       build: () => cubit,
       seed: () => RegisterState(
         username: const Username.dirty(''),
@@ -128,7 +124,7 @@ void main() {
       act: (c) => c.sendCodeSilently(),
       expect: () => [],
       verify: (_) {
-        verifyNever(() => mockRepository.signupStart(any()));
+        verifyNever(() => mockRepository.createVerification(any()));
       },
     );
 
@@ -144,7 +140,7 @@ void main() {
       act: (c) => c.sendCodeSilently(),
       expect: () => [],
       verify: (_) {
-        verifyNever(() => mockRepository.signupStart(any()));
+        verifyNever(() => mockRepository.createVerification(any()));
       },
     );
   });
@@ -161,7 +157,7 @@ void main() {
             .having((s) => s.errorMessage, 'errorMessage', '验证码发送失败，请返回上一步重试'),
       ],
       verify: (_) {
-        verifyNever(() => mockRepository.signupResend(any()));
+        verifyNever(() => mockRepository.resendVerification(any()));
       },
     );
 
@@ -171,8 +167,8 @@ void main() {
       seed: () => RegisterState(pendingEmail: 'test@example.com'),
       setUp: () {
         when(
-          () => mockRepository.signupResend(any()),
-        ).thenAnswer((_) async => SignupResendResponse(message: 'Code sent'));
+          () => mockRepository.resendVerification(any()),
+        ).thenAnswer((_) async {});
       },
       act: (c) => c.resendCode(),
       expect: () => [
@@ -188,7 +184,7 @@ void main() {
         ),
       ],
       verify: (_) {
-        verify(() => mockRepository.signupResend(any())).called(1);
+        verify(() => mockRepository.resendVerification(any())).called(1);
       },
     );
 
@@ -198,7 +194,7 @@ void main() {
       seed: () => RegisterState(pendingEmail: 'test@example.com'),
       setUp: () {
         when(
-          () => mockRepository.signupResend(any()),
+          () => mockRepository.resendVerification(any()),
         ).thenThrow(ServerException('Network error'));
       },
       act: (c) => c.resendCode(),