Update with recovered code from VM binaries (Jan 1)

Recovered from decompiled OpenMaui.Controls.Linux.dll:
- SkiaShell.cs: FlyoutHeader, FlyoutFooter, scroll support (918 -> 1325 lines)
- X11Window.cs: Cursor support (XCreateFontCursor, XDefineCursor)
- All handlers with dark mode support
- All services with latest implementations
- LinuxApplication with theme change handling

Handlers/SkiaWindow.cs

@@ -0,0 +1,184 @@
+using System;
+using SkiaSharp;
+
+namespace Microsoft.Maui.Platform.Linux.Handlers;
+
+public class SkiaWindow
+{
+	private SkiaView? _content;
+
+	private string _title = "MAUI Application";
+
+	private int _x;
+
+	private int _y;
+
+	private int _width = 800;
+
+	private int _height = 600;
+
+	private int _minWidth = 100;
+
+	private int _minHeight = 100;
+
+	private int _maxWidth = int.MaxValue;
+
+	private int _maxHeight = int.MaxValue;
+
+	public SkiaView? Content
+	{
+		get
+		{
+			return _content;
+		}
+		set
+		{
+			_content = value;
+			this.ContentChanged?.Invoke(this, EventArgs.Empty);
+		}
+	}
+
+	public string Title
+	{
+		get
+		{
+			return _title;
+		}
+		set
+		{
+			_title = value;
+			this.TitleChanged?.Invoke(this, EventArgs.Empty);
+		}
+	}
+
+	public int X
+	{
+		get
+		{
+			return _x;
+		}
+		set
+		{
+			_x = value;
+			this.PositionChanged?.Invoke(this, EventArgs.Empty);
+		}
+	}
+
+	public int Y
+	{
+		get
+		{
+			return _y;
+		}
+		set
+		{
+			_y = value;
+			this.PositionChanged?.Invoke(this, EventArgs.Empty);
+		}
+	}
+
+	public int Width
+	{
+		get
+		{
+			return _width;
+		}
+		set
+		{
+			_width = Math.Clamp(value, _minWidth, _maxWidth);
+			this.SizeChanged?.Invoke(this, new SizeChangedEventArgs(_width, _height));
+		}
+	}
+
+	public int Height
+	{
+		get
+		{
+			return _height;
+		}
+		set
+		{
+			_height = Math.Clamp(value, _minHeight, _maxHeight);
+			this.SizeChanged?.Invoke(this, new SizeChangedEventArgs(_width, _height));
+		}
+	}
+
+	public int MinWidth
+	{
+		get
+		{
+			return _minWidth;
+		}
+		set
+		{
+			_minWidth = value;
+		}
+	}
+
+	public int MinHeight
+	{
+		get
+		{
+			return _minHeight;
+		}
+		set
+		{
+			_minHeight = value;
+		}
+	}
+
+	public int MaxWidth
+	{
+		get
+		{
+			return _maxWidth;
+		}
+		set
+		{
+			_maxWidth = value;
+		}
+	}
+
+	public int MaxHeight
+	{
+		get
+		{
+			return _maxHeight;
+		}
+		set
+		{
+			_maxHeight = value;
+		}
+	}
+
+	public event EventHandler? ContentChanged;
+
+	public event EventHandler? TitleChanged;
+
+	public event EventHandler? PositionChanged;
+
+	public event EventHandler<SizeChangedEventArgs>? SizeChanged;
+
+	public event EventHandler? CloseRequested;
+
+	public void Render(SKCanvas canvas)
+	{
+		//IL_0001: Unknown result type (might be due to invalid IL or missing references)
+		//IL_0027: Unknown result type (might be due to invalid IL or missing references)
+		//IL_002c: Unknown result type (might be due to invalid IL or missing references)
+		//IL_0050: Unknown result type (might be due to invalid IL or missing references)
+		canvas.Clear(SKColors.White);
+		if (_content != null)
+		{
+			_content.Measure(new SKSize((float)_width, (float)_height));
+			_content.Arrange(new SKRect(0f, 0f, (float)_width, (float)_height));
+			_content.Draw(canvas);
+		}
+		SkiaView.DrawPopupOverlays(canvas);
+	}
+
+	public void Close()
+	{
+		this.CloseRequested?.Invoke(this, EventArgs.Empty);
+	}
+}