feat: Implement change detection and conditional enabling of save/cancel buttons for profile and notification settings.

lib/features/profile/presentation/widgets/profile_settings_tab.dart

@@ -28,6 +28,7 @@ class _ProfileSettingsTabState extends ConsumerState<ProfileSettingsTab> {
   bool _controllersInitialized = false;
   bool _isUploadingAvatar = false;
   File? _localAvatarFile;
+  Map<String, String> _savedValues = {};
 
   @override
   void initState() {
@@ -81,6 +82,21 @@ class _ProfileSettingsTabState extends ConsumerState<ProfileSettingsTab> {
       final parts = [city, stateName, country].where((s) => s.isNotEmpty);
       _locationController.text = parts.join(', ');
     }
+
+    _savedValues = {
+      'fullName': _fullNameController.text,
+      'title': _titleController.text,
+      'email': _emailController.text,
+      'phone': _phoneController.text,
+      'location': _locationController.text,
+    };
+  }
+
+  bool get _hasChanges {
+    return _fullNameController.text != (_savedValues['fullName'] ?? '') ||
+        _titleController.text != (_savedValues['title'] ?? '') ||
+        _phoneController.text != (_savedValues['phone'] ?? '') ||
+        _locationController.text != (_savedValues['location'] ?? '');
   }
 
   @override
@@ -262,6 +278,7 @@ class _ProfileSettingsTabState extends ConsumerState<ProfileSettingsTab> {
           onSave: _saveProfileSettings,
           onCancel: _resetForm,
           isSaving: profileState.isSaving,
+          hasChanges: _hasChanges,
         ),
       ],
     );
@@ -338,16 +355,16 @@ class _ProfileSettingsTabState extends ConsumerState<ProfileSettingsTab> {
   }
 
   void _resetForm() {
-    _controllersInitialized = false;
-    _localAvatarFile = null;
-    final profileState = ref.read(profileProvider);
-    if (profileState.profile.isNotEmpty) {
-      _initControllersFromProfile(profileState);
-    }
+    if (!_hasChanges) return;
+    // Revert to last saved values
+    _fullNameController.text = _savedValues['fullName'] ?? '';
+    _titleController.text = _savedValues['title'] ?? '';
+    _phoneController.text = _savedValues['phone'] ?? '';
+    _locationController.text = _savedValues['location'] ?? '';
     setState(() {});
   }
 
-  void _saveProfileSettings() {
+  Future<void> _saveProfileSettings() async {
     final profileState = ref.read(profileProvider);
     final isAgent = profileState.isAgent;
 
@@ -366,7 +383,6 @@ class _ProfileSettingsTabState extends ConsumerState<ProfileSettingsTab> {
       final location = _locationController.text.trim();
       if (location.isNotEmpty) data['serviceAreas'] = [location];
     } else {
-      // Note: headline is not a field on UserProfile — don't send it
       final locationParts = _locationController.text
           .split(',')
           .map((s) => s.trim())
@@ -377,7 +393,20 @@ class _ProfileSettingsTabState extends ConsumerState<ProfileSettingsTab> {
       if (locationParts.length > 2) data['country'] = locationParts[2];
     }
 
-    ref.read(profileProvider.notifier).updateProfile(data);
+    await ref.read(profileProvider.notifier).updateProfile(data);
+
+    // Update saved values so Cancel won't revert after successful save
+    if (mounted) {
+      setState(() {
+        _savedValues = {
+          'fullName': _fullNameController.text,
+          'title': _titleController.text,
+          'email': _emailController.text,
+          'phone': _phoneController.text,
+          'location': _locationController.text,
+        };
+      });
+    }
   }
 
   void _showSnackBar(String message, {bool isError = false}) {