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,
         },
       );