adding stash calibration

src/Poe2Trade.Ui/Overlay/OverlayWindow.axaml.cs

@@ -0,0 +1,38 @@
+using Avalonia.Controls;
+using Poe2Trade.Bot;
+
+namespace Poe2Trade.Ui.Overlay;
+
+public partial class OverlayWindow : Window
+{
+    private readonly BotOrchestrator _bot = null!;
+
+    // Designer/XAML loader requires parameterless constructor
+    public OverlayWindow() => InitializeComponent();
+
+    public OverlayWindow(BotOrchestrator bot)
+    {
+        _bot = bot;
+        InitializeComponent();
+    }
+
+    protected override void OnOpened(EventArgs e)
+    {
+        base.OnOpened(e);
+
+        // Position at top-left corner
+        Position = new Avalonia.PixelPoint(0, 0);
+
+        // Apply Win32 click-through extended styles
+        if (TryGetPlatformHandle() is { } handle)
+            OverlayNativeMethods.MakeClickThrough(handle.Handle);
+
+        Canvas.Initialize(_bot);
+    }
+
+    protected override void OnClosing(WindowClosingEventArgs e)
+    {
+        Canvas.Shutdown();
+        base.OnClosing(e);
+    }
+}