Invert composition root to DI container

Build the Microsoft.Extensions.DependencyInjection provider in App and resolve the view model and runtime factory from it, replacing the manual new MainWindow(trace) path. MainWindow now takes an injected ctor (view model, tracer, runtime factory, provider); window-tied services are produced by MainWindowRuntimeFactory once the window exists. On real shutdown MainWindow_Closed disposes the provider (which disposes the view model first, then domain services and tracer), while the minimize-to-tray branch returns before any teardown.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

LibreHardwareMonitor.Windows.WinUI/MainWindow.cs

@@ -10,6 +10,7 @@ using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
 using LibreHardwareMonitor.Hardware;
+using LibreHardwareMonitor.Windows.WinUI.Composition;
 using LibreHardwareMonitor.Windows.WinUI.Controls;
 using LibreHardwareMonitor.Windows.WinUI.Services;
 using LibreHardwareMonitor.Windows.WinUI.Services.Tracing;
@@ -35,6 +36,7 @@ public sealed partial class MainWindow : Window
     private readonly WindowPlacementService _placementService;
     private readonly DispatcherQueueTimer _timer;
     private readonly IStartupTracer _startupTrace;
+    private readonly IServiceProvider _serviceProvider;
     private readonly TrayIconService _trayIconService;
     private readonly DialogService _dialogService;
     private readonly SensorColumnMeasurer _columnMeasurer;
@@ -51,41 +53,34 @@ public sealed partial class MainWindow : Window
     private bool _sensorTreeRebuildQueued;
     private bool _sensorColumnWidthUpdateQueued;
 
-    public MainWindow() : this(NoOpStartupTracer.Instance)
-    {
-    }
-
-    internal MainWindow(IStartupTracer startupTrace)
+    internal MainWindow(
+        MainWindowViewModel viewModel,
+        IStartupTracer startupTrace,
+        IMainWindowRuntimeFactory runtimeFactory,
+        IServiceProvider serviceProvider)
     {
+        ViewModel = viewModel;
         _startupTrace = startupTrace;
+        _serviceProvider = serviceProvider;
         _startupTrace.Mark("MainWindow.Constructor.Begin");
-        AppSettings settings = MeasureStartup("MainWindow.LoadSettings", AppSettings.LoadDefault);
-        ViewModel = MeasureStartup("MainWindow.CreateViewModel", () => new MainWindowViewModel(settings, _startupTrace));
 
-        _appWindow = MeasureStartup("MainWindow.GetAppWindow", () =>
-        {
-            IntPtr hwnd = WindowNative.GetWindowHandle(this);
-            WindowId windowId = Win32Interop.GetWindowIdFromWindow(hwnd);
-            AppWindow appWindow = AppWindow.GetFromWindowId(windowId);
-            appWindow.Title = "Libre Hardware Monitor";
-            return appWindow;
-        });
-        IntPtr mainHwnd = WindowNative.GetWindowHandle(this);
-        _chromeManager = new WindowChromeManager(mainHwnd);
-        _placementService = new WindowPlacementService(_appWindow, settings, mainHwnd);
+        MeasureStartup("MainWindow.InitializeComponent", InitializeComponent);
+
+        MainWindowRuntime runtime = MeasureStartup(
+            "MainWindow.CreateRuntimeServices",
+            () => runtimeFactory.Create(this, ViewModel, () => Content.XamlRoot, HideShowMainWindow));
+        _appWindow = runtime.AppWindow;
+        _chromeManager = runtime.ChromeManager;
+        _placementService = runtime.PlacementService;
+        _trayIconService = runtime.TrayIconService;
+        _dialogService = runtime.DialogService;
+        _secondaryWindows = runtime.SecondaryWindows;
+        _columnMeasurer = runtime.ColumnMeasurer;
 
-        _trayIconService = MeasureStartup("MainWindow.CreateTrayIconService", () => new TrayIconService(
-            WindowNative.GetWindowHandle(this),
-            settings,
-            () => ViewModel.TemperatureUnit));
         _trayIconService.IsMainIconEnabled = ViewModel.MinimizeToTray;
-        _dialogService = new DialogService(() => Content.XamlRoot, ViewModel, WindowNative.GetWindowHandle(this));
-        _secondaryWindows = new SecondaryWindowCoordinator(ViewModel, HideShowMainWindow);
-        _columnMeasurer = new SensorColumnMeasurer(DispatcherQueue, ViewModel, _startupTrace);
         MeasureStartup("MainWindow.ApplySavedDeviceColumnWidth", _columnMeasurer.ApplySavedWidth, () => FormattableString.Invariant($"width={_columnMeasurer.DeviceColumnWidth:F0}"));
         _columnMeasurer.SettleTriggered += (_, _) => UpdateSensorColumnWidths();
 
-        MeasureStartup("MainWindow.InitializeComponent", InitializeComponent);
         TryApplyMicaBackdrop();
         RootGrid.Loaded += RootGrid_Loaded;
         RootGrid.LayoutUpdated += RootGrid_LayoutUpdated;
@@ -466,8 +461,11 @@ public sealed partial class MainWindow : Window
         _trayIconService.Dispose();
         _secondaryWindows.CloseAll();
         _placementService.Save();
-        ViewModel.Dispose();
-        _startupTrace.Dispose();
+
+        // The container owns the view model and domain services. Disposing the provider runs
+        // MainWindowViewModel.Dispose first (reverse construction order) to persist settings while the
+        // hardware monitor and web server are still alive, then disposes those services and the tracer.
+        (_serviceProvider as IDisposable)?.Dispose();
     }
 
     private void AppWindow_Changed(AppWindow sender, AppWindowChangedEventArgs args)