feat: pass role, agent type, and auth mode to social login providers and repository

lib/features/auth/data/auth_repository.dart

@@ -137,6 +137,9 @@ class AuthRepository {
     required String email,
     String? name,
     String? avatar,
+    String? role,
+    String? agentTypeId,
+    String mode = 'signup',
   }) async {
     try {
       final response = await _dio.post(
@@ -145,8 +148,11 @@ class AuthRepository {
           'provider': provider,
           'providerId': providerId,
           'email': email,
+          'mode': mode,
           if (name != null) 'name': name,
           if (avatar != null) 'avatar': avatar,
+          if (role != null) 'role': role,
+          if (agentTypeId != null) 'agentTypeId': agentTypeId,
         },
       );
 

lib/features/auth/presentation/providers/auth_provider.dart

@@ -178,7 +178,11 @@ class AuthNotifier extends StateNotifier<AuthState> {
     }
   }
 
-  Future<void> signInWithGoogle() async {
+  Future<void> signInWithGoogle({
+    String? role,
+    String? agentTypeId,
+    String mode = 'signup',
+  }) async {
     state = state.copyWith(
       status: AuthStatus.loading,
       errorMessage: null,
@@ -204,6 +208,9 @@ class AuthNotifier extends StateNotifier<AuthState> {
         email: account.email,
         name: account.displayName,
         avatar: account.photoUrl,
+        role: role,
+        agentTypeId: agentTypeId,
+        mode: mode,
       );
 
       state = state.copyWith(
@@ -226,7 +233,11 @@ class AuthNotifier extends StateNotifier<AuthState> {
     }
   }
 
-  Future<void> signInWithFacebook() async {
+  Future<void> signInWithFacebook({
+    String? role,
+    String? agentTypeId,
+    String mode = 'signup',
+  }) async {
     state = state.copyWith(
       status: AuthStatus.loading,
       errorMessage: null,
@@ -273,6 +284,9 @@ class AuthNotifier extends StateNotifier<AuthState> {
         email: email,
         name: userData['name'] as String?,
         avatar: avatarUrl,
+        role: role,
+        agentTypeId: agentTypeId,
+        mode: mode,
       );
 
       state = state.copyWith(
@@ -296,7 +310,12 @@ class AuthNotifier extends StateNotifier<AuthState> {
   }
 
   /// Complete Twitter/X login after webview returns user data.
-  Future<void> completeTwitterLogin(Map<String, dynamic> twitterUser) async {
+  Future<void> completeTwitterLogin(
+    Map<String, dynamic> twitterUser, {
+    String? role,
+    String? agentTypeId,
+    String mode = 'signup',
+  }) async {
     state = state.copyWith(
       status: AuthStatus.loading,
       errorMessage: null,
@@ -310,6 +329,9 @@ class AuthNotifier extends StateNotifier<AuthState> {
         email: '${twitterUser['username']}@x.com',
         name: twitterUser['name'] as String?,
         avatar: twitterUser['avatar'] as String?,
+        role: role,
+        agentTypeId: agentTypeId,
+        mode: mode,
       );
 
       state = state.copyWith(

lib/features/auth/presentation/screens/login_screen.dart

@@ -240,8 +240,8 @@ class _LoginScreenState extends ConsumerState<LoginScreen> {
                 const OrDivider(),
                 const SizedBox(height: 24),
 
-                // Social login buttons
-                const SocialLoginButtons(),
+                // Social login buttons (login mode — reject if user doesn't exist)
+                const SocialLoginButtons(mode: 'login'),
                 const SizedBox(height: 40),
               ],
             ),

lib/features/auth/presentation/screens/signup_screen.dart

@@ -443,8 +443,12 @@ class _SignupScreenState extends ConsumerState<SignupScreen> {
         const OrDivider(),
         const SizedBox(height: 24),
 
-        // Social login buttons
-        const SocialLoginButtons(),
+        // Social login buttons (signup mode with role and agent type)
+        SocialLoginButtons(
+          mode: 'signup',
+          role: _selectedRole,
+          agentTypeId: _selectedAgentTypeId,
+        ),
         const SizedBox(height: 40),
       ],
     );

lib/features/auth/presentation/widgets/social_login_buttons.dart

@@ -6,7 +6,16 @@ import 'package:real_estate_mobile/features/auth/presentation/providers/auth_pro
 import 'package:real_estate_mobile/features/auth/presentation/screens/twitter_login_screen.dart';
 
 class SocialLoginButtons extends ConsumerWidget {
-  const SocialLoginButtons({super.key});
+  final String? role;
+  final String? agentTypeId;
+  final String mode;
+
+  const SocialLoginButtons({
+    super.key,
+    this.role,
+    this.agentTypeId,
+    this.mode = 'signup',
+  });
 
   void _showComingSoon(BuildContext context) {
     ScaffoldMessenger.of(context).showSnackBar(
@@ -24,7 +33,12 @@ class SocialLoginButtons extends ConsumerWidget {
       MaterialPageRoute(builder: (_) => const TwitterLoginScreen()),
     );
     if (result != null) {
-      ref.read(authProvider.notifier).completeTwitterLogin(result);
+      ref.read(authProvider.notifier).completeTwitterLogin(
+        result,
+        role: role,
+        agentTypeId: agentTypeId,
+        mode: mode,
+      );
     }
   }
 
@@ -50,7 +64,11 @@ class SocialLoginButtons extends ConsumerWidget {
         _SocialButton(
           onTap: isLoading
               ? null
-              : () => ref.read(authProvider.notifier).signInWithGoogle(),
+              : () => ref.read(authProvider.notifier).signInWithGoogle(
+                    role: role,
+                    agentTypeId: agentTypeId,
+                    mode: mode,
+                  ),
           child: SvgPicture.asset(
             'assets/icons/google.svg',
             width: 24,
@@ -74,7 +92,11 @@ class SocialLoginButtons extends ConsumerWidget {
         _SocialButton(
           onTap: isLoading
               ? null
-              : () => ref.read(authProvider.notifier).signInWithFacebook(),
+              : () => ref.read(authProvider.notifier).signInWithFacebook(
+                    role: role,
+                    agentTypeId: agentTypeId,
+                    mode: mode,
+                  ),
           child: SvgPicture.asset(
             'assets/icons/facebook.svg',
             width: 24,