moved to MVVM architecture

CursorLang/App.xaml.cs

@@ -1,10 +1,51 @@
-using System.Windows;
+using System.Windows;
+using CursorLang.Services;
+using CursorLang.ViewModels;
+using CursorLang.Views;
+using Microsoft.Extensions.DependencyInjection;
 
 namespace CursorLang;
 
 /// <summary>
-/// Interaction logic for App.xaml
+/// Композиционный корень: собирает контейнер и запускает главное окно.
 /// </summary>
 public partial class App : Application
 {
-}
+    private ServiceProvider? _services;
+
+    protected override void OnStartup(StartupEventArgs e)
+    {
+        base.OnStartup(e);
+
+        var services = new ServiceCollection();
+        ConfigureServices(services);
+        _services = services.BuildServiceProvider();
+
+        MainWindow = _services.GetRequiredService<MainWindow>();
+        MainWindow.Show();
+
+        _services.GetRequiredService<IKeyboardLayoutService>().Start();
+    }
+
+    protected override void OnExit(ExitEventArgs e)
+    {
+        // Контейнер сам остановит таймеры и закроет окно подсказки
+        _services?.Dispose();
+        base.OnExit(e);
+    }
+
+    private static void ConfigureServices(IServiceCollection services)
+    {
+        services.AddSingleton(new KeyboardLayoutOptions());
+        services.AddSingleton(new PopupOptions());
+
+        services.AddSingleton<IKeyboardLayoutService, KeyboardLayoutService>();
+        services.AddSingleton<ILayoutPopupService, LayoutPopupService>();
+
+        services.AddSingleton<LayoutPopupViewModel>();
+        services.AddSingleton<MainViewModel>();
+
+        services.AddSingleton<LayoutPopupWindow>();
+        services.AddSingleton<MainWindow>();
+    }
+}