feat: Add optional agentTypeId field to RegisterRequest model.

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

@@ -1,6 +1,8 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:real_estate_mobile/core/constants/app_colors.dart';
+import 'package:real_estate_mobile/features/agents/data/models/agent_type.dart';
+import 'package:real_estate_mobile/features/agents/presentation/providers/agents_provider.dart';
 import 'package:real_estate_mobile/features/auth/presentation/providers/auth_provider.dart';
 import 'package:real_estate_mobile/features/auth/presentation/widgets/auth_text_field.dart';
 import 'package:real_estate_mobile/features/auth/presentation/widgets/or_divider.dart';
@@ -22,6 +24,16 @@ class _SignupScreenState extends ConsumerState<SignupScreen> {
   String _selectedRole = 'USER';
   bool _obscurePassword = true;
 
+  List<AgentType> _agentTypes = [];
+  String? _selectedAgentTypeId;
+  bool _loadingAgentTypes = false;
+
+  @override
+  void initState() {
+    super.initState();
+    _fetchAgentTypes();
+  }
+
   @override
   void dispose() {
     _nameController.dispose();
@@ -30,6 +42,22 @@ class _SignupScreenState extends ConsumerState<SignupScreen> {
     super.dispose();
   }
 
+  Future<void> _fetchAgentTypes() async {
+    setState(() => _loadingAgentTypes = true);
+    try {
+      final repo = ref.read(agentsRepositoryProvider);
+      final types = await repo.getAgentTypes();
+      if (mounted) {
+        setState(() {
+          _agentTypes = types;
+          _loadingAgentTypes = false;
+        });
+      }
+    } catch (_) {
+      if (mounted) setState(() => _loadingAgentTypes = false);
+    }
+  }
+
   String? _validateLocally() {
     if (_nameController.text.trim().isEmpty) {
       return 'Please enter your name';
@@ -40,6 +68,9 @@ class _SignupScreenState extends ConsumerState<SignupScreen> {
     if (_passwordController.text.isEmpty) {
       return 'Please enter a password';
     }
+    if (_selectedRole == 'AGENT' && (_selectedAgentTypeId == null || _selectedAgentTypeId!.isEmpty)) {
+      return 'Please select an agent type';
+    }
     return null;
   }
 
@@ -60,6 +91,7 @@ class _SignupScreenState extends ConsumerState<SignupScreen> {
           email: _emailController.text.trim(),
           password: _passwordController.text,
           role: _selectedRole,
+          agentTypeId: _selectedRole == 'AGENT' ? _selectedAgentTypeId : null,
         );
   }
 
@@ -206,19 +238,10 @@ class _SignupScreenState extends ConsumerState<SignupScreen> {
         // Role toggle
         RoleToggle(
           selectedRole: _selectedRole,
-          onChanged: (role) => setState(() => _selectedRole = role),
-        ),
-        const SizedBox(height: 20),
-
-        // Subtitle
-        Text(
-          'Enter Your Name to Continue',
-          style: TextStyle(
-            fontFamily: 'Fractul',
-            fontSize: 14,
-            fontWeight: FontWeight.w300,
-            color: AppColors.primaryDark.withValues(alpha: 0.7),
-          ),
+          onChanged: (role) => setState(() {
+            _selectedRole = role;
+            if (role != 'AGENT') _selectedAgentTypeId = null;
+          }),
         ),
         const SizedBox(height: 20),
 
@@ -296,6 +319,76 @@ class _SignupScreenState extends ConsumerState<SignupScreen> {
             ),
           ),
         ),
+
+        // Agent type selector (only when AGENT role is selected)
+        if (_selectedRole == 'AGENT') ...[
+          const SizedBox(height: 16),
+          Container(
+            height: 50,
+            decoration: BoxDecoration(
+              color: AppColors.white,
+              borderRadius: BorderRadius.circular(20),
+            ),
+            padding: const EdgeInsets.symmetric(horizontal: 16),
+            child: _loadingAgentTypes
+                ? const Center(
+                    child: SizedBox(
+                      width: 20,
+                      height: 20,
+                      child: CircularProgressIndicator(
+                        strokeWidth: 2,
+                        color: AppColors.accentOrange,
+                      ),
+                    ),
+                  )
+                : DropdownButtonHideUnderline(
+                    child: DropdownButton<String>(
+                      value: _selectedAgentTypeId,
+                      hint: Text(
+                        'Select Agent Type',
+                        style: TextStyle(
+                          fontFamily: 'Fractul',
+                          fontSize: 14,
+                          fontWeight: FontWeight.w300,
+                          color: AppColors.primaryDark.withValues(alpha: 0.5),
+                        ),
+                      ),
+                      isExpanded: true,
+                      icon: const Icon(
+                        Icons.keyboard_arrow_down,
+                        color: AppColors.primaryDark,
+                        size: 22,
+                      ),
+                      style: const TextStyle(
+                        fontFamily: 'Fractul',
+                        fontSize: 14,
+                        fontWeight: FontWeight.w400,
+                        color: AppColors.primaryDark,
+                      ),
+                      items: _agentTypes
+                          .map((type) => DropdownMenuItem<String>(
+                                value: type.id,
+                                child: Text(type.name),
+                              ))
+                          .toList(),
+                      onChanged: (value) =>
+                          setState(() => _selectedAgentTypeId = value),
+                    ),
+                  ),
+          ),
+          if (authState.getFieldError('agentTypeId') != null)
+            Padding(
+              padding: const EdgeInsets.only(top: 6, left: 12),
+              child: Text(
+                authState.getFieldError('agentTypeId')!,
+                style: const TextStyle(
+                  fontFamily: 'Fractul',
+                  fontSize: 12,
+                  color: AppColors.error,
+                ),
+              ),
+            ),
+        ],
         const SizedBox(height: 24),
 
         // Sign Up button