feat: agregar SyncService y mejorar gestión de asistencia con nuevas funcionalidades

Asistencia/ViewModels/MainWindowViewModel.cs

@@ -13,6 +13,7 @@ public partial class MainWindowViewModel : ViewModelBase
     private readonly AuthService _authService;
     private readonly AsistenciaService _asistenciaService;
     private readonly ConnectivityService _connectivityService;
+    private readonly SyncService _syncService;
     private object? _currentView;
 
     [ObservableProperty]
@@ -30,11 +31,12 @@ public partial class MainWindowViewModel : ViewModelBase
         set => SetProperty(ref _currentView, value);
     }
 
-    public MainWindowViewModel(AuthService authService, AsistenciaService asistenciaService, ConnectivityService connectivityService)
+    public MainWindowViewModel(AuthService authService, AsistenciaService asistenciaService, ConnectivityService connectivityService, SyncService syncService)
     {
         _authService = authService;
         _asistenciaService = asistenciaService;
         _connectivityService = connectivityService;
+        _syncService = syncService;
         _ = VerificarConexionAsync();
     }
 
@@ -64,13 +66,13 @@ public partial class MainWindowViewModel : ViewModelBase
     public void NavigateToDashboard()
     {
         CurrentViewTitle = "Panel Principal";
-        CurrentView = new DashboardViewModel(_authService, _asistenciaService, this);
+        CurrentView = new DashboardViewModel(_authService, _asistenciaService, _syncService, this);
     }
 
-    public void NavigateToAsistencia(CursoAbierto curso)
+    public void NavigateToAsistencia()
     {
         CurrentViewTitle = "Asistencia";
-        CurrentView = new AsistenciaViewModel(_asistenciaService, _authService, curso, this);
+        CurrentView = new AsistenciaViewModel(_asistenciaService, _authService, this);
     }
 
     public void NavigateToPerfil()