refactor(frontend): adapt to RESTful API routes

apps/lib/features/auth/data/auth_api.dart

@@ -9,47 +9,45 @@ class AuthApi {
 
   AuthApi(this._client);
 
-  Future<SignupStartResponse> signupStart(SignupStartRequest request) async {
+  Future<VerificationCreateResponse> createVerification(
+    SignupStartRequest request,
+  ) async {
     final response = await _client.post(
-      '$_prefix/signup/start',
+      '$_prefix/verifications',
       data: request.toJson(),
     );
-    return SignupStartResponse.fromJson(response.data);
+    return VerificationCreateResponse.fromJson(response.data);
   }
 
-  Future<AuthResponse> signupVerify(SignupVerifyRequest request) async {
+  Future<AuthResponse> verifyVerification(SignupVerifyRequest request) async {
     final response = await _client.post(
-      '$_prefix/signup/verify',
+      '$_prefix/verifications/verify',
       data: request.toJson(),
     );
     return AuthResponse.fromJson(response.data);
   }
 
-  Future<SignupResendResponse> signupResend(SignupResendRequest request) async {
-    final response = await _client.post(
-      '$_prefix/signup/resend',
-      data: request.toJson(),
-    );
-    return SignupResendResponse.fromJson(response.data);
+  Future<void> resendVerification(SignupResendRequest request) async {
+    await _client.post('$_prefix/verifications/resend', data: request.toJson());
   }
 
-  Future<AuthResponse> login(LoginRequest request) async {
+  Future<AuthResponse> createSession(LoginRequest request) async {
     final response = await _client.post(
-      '$_prefix/login',
+      '$_prefix/sessions',
       data: request.toJson(),
     );
     return AuthResponse.fromJson(response.data);
   }
 
-  Future<AuthResponse> refresh(RefreshRequest request) async {
+  Future<AuthResponse> refreshSession(RefreshRequest request) async {
     final response = await _client.post(
-      '$_prefix/refresh',
+      '$_prefix/sessions/refresh',
       data: request.toJson(),
     );
     return AuthResponse.fromJson(response.data);
   }
 
-  Future<void> logout(LogoutRequest request) async {
-    await _client.post('$_prefix/logout', data: request.toJson());
+  Future<void> deleteSession(LogoutRequest request) async {
+    await _client.delete('$_prefix/sessions', data: request.toJson());
   }
 }