feat: show active local model in Flutter UI

SovereignAI-Starter/flutter_app/lib/core/network/api_repository.dart

@@ -22,6 +22,13 @@ class ApiRepository {
   void setBaseUrl(String value) =>
       _baseUrl = value.replaceFirst(RegExp(r'/+$'), '');
 
+  Future<String> getModelName() async {
+    final response = await http.get(Uri.parse('$_baseUrl/health'));
+    _checkStatus(response);
+    final data = jsonDecode(response.body) as Map<String, dynamic>;
+    return data['model'] as String? ?? 'نموذج غير معروف';
+  }
+
   Future<String> _userId() async {
     final cached = _cachedUserId;
     if (cached != null) return cached;