Add ClampRectangle method and update D3D11Screen logic

Introduced a new private method `ClampRectangle` in the `AIManager`
class to ensure rectangles are clamped within screen bounds,
preventing out-of-bounds issues. Updated the `D3D11Screen` method
to use `ClampRectangle` for adjusting the `detectionBox` parameter.
Added a `using` directive for `System.Windows.Threading` to support
the use of `Dispatcher`.

Author: TaylorIsBlue

Aimmy2/AILogic/AIManager.cs

@@ -12,6 +12,7 @@
 using System.Drawing.Imaging;
 using System.IO;
 using System.Windows;
+using System.Windows.Threading;
 using Visuality;
 using Vortice.Direct3D;
 using Vortice.Direct3D11;
@@ -672,7 +673,12 @@ private void ReinitializeD3D11()
             // Reinitialize Direct3D device and context
             InitializeDirect3D();
         }
-
+        private Rectangle ClampRectangle(Rectangle rect, int screenWidth, int screenHeight)
+        {
+            int x = Math.Max(0, Math.Min(rect.X, screenWidth - rect.Width));
+            int y = Math.Max(0, Math.Min(rect.Y, screenHeight - rect.Height));
+            return new Rectangle(x, y, rect.Width, rect.Height);
+        }
         private Bitmap? D3D11Screen(Rectangle detectionBox)
         {
             try
@@ -681,7 +687,7 @@ private void ReinitializeD3D11()
                 {
                     throw new InvalidOperationException("Direct3D device or context is not initialized.");
                 }
-
+                detectionBox = ClampRectangle(detectionBox, ScreenWidth, ScreenHeight);
                 var result = _outputDuplication.AcquireNextFrame(500, out var frameInfo, out var desktopResource);
 
                 if (result != Result.Ok)