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

Services/LauncherService.cs

@@ -1,85 +1,77 @@
-// Licensed to the .NET Foundation under one or more agreements.
-// The .NET Foundation licenses this file to you under the MIT license.
-
+using System;
 using System.Diagnostics;
+using System.Threading.Tasks;
 using Microsoft.Maui.ApplicationModel;
+using Microsoft.Maui.Storage;
 
 namespace Microsoft.Maui.Platform.Linux.Services;
 
-/// <summary>
-/// Linux launcher service for opening URLs and files.
-/// </summary>
 public class LauncherService : ILauncher
 {
-    public Task<bool> CanOpenAsync(Uri uri)
-    {
-        // On Linux, we can generally open any URI using xdg-open
-        return Task.FromResult(true);
-    }
+	public Task<bool> CanOpenAsync(Uri uri)
+	{
+		return Task.FromResult(result: true);
+	}
 
-    public Task<bool> OpenAsync(Uri uri)
-    {
-        return Task.Run(() =>
-        {
-            try
-            {
-                var psi = new ProcessStartInfo
-                {
-                    FileName = "xdg-open",
-                    Arguments = uri.ToString(),
-                    UseShellExecute = false,
-                    RedirectStandardOutput = true,
-                    RedirectStandardError = true,
-                    CreateNoWindow = true
-                };
+	public Task<bool> OpenAsync(Uri uri)
+	{
+		return Task.Run(delegate
+		{
+			try
+			{
+				using Process process = Process.Start(new ProcessStartInfo
+				{
+					FileName = "xdg-open",
+					Arguments = uri.ToString(),
+					UseShellExecute = false,
+					RedirectStandardOutput = true,
+					RedirectStandardError = true,
+					CreateNoWindow = true
+				});
+				if (process == null)
+				{
+					return false;
+				}
+				return true;
+			}
+			catch
+			{
+				return false;
+			}
+		});
+	}
 
-                using var process = Process.Start(psi);
-                if (process == null)
-                    return false;
+	public Task<bool> OpenAsync(OpenFileRequest request)
+	{
+		if (request.File == null)
+		{
+			return Task.FromResult(result: false);
+		}
+		return Task.Run(delegate
+		{
+			try
+			{
+				string fullPath = ((FileBase)request.File).FullPath;
+				using Process process = Process.Start(new ProcessStartInfo
+				{
+					FileName = "xdg-open",
+					Arguments = "\"" + fullPath + "\"",
+					UseShellExecute = false,
+					RedirectStandardOutput = true,
+					RedirectStandardError = true,
+					CreateNoWindow = true
+				});
+				return process != null;
+			}
+			catch
+			{
+				return false;
+			}
+		});
+	}
 
-                // Don't wait for the process to exit - xdg-open may spawn another process
-                return true;
-            }
-            catch
-            {
-                return false;
-            }
-        });
-    }
-
-    public Task<bool> OpenAsync(OpenFileRequest request)
-    {
-        if (request.File == null)
-            return Task.FromResult(false);
-
-        return Task.Run(() =>
-        {
-            try
-            {
-                var filePath = request.File.FullPath;
-
-                var psi = new ProcessStartInfo
-                {
-                    FileName = "xdg-open",
-                    Arguments = $"\"{filePath}\"",
-                    UseShellExecute = false,
-                    RedirectStandardOutput = true,
-                    RedirectStandardError = true,
-                    CreateNoWindow = true
-                };
-
-                using var process = Process.Start(psi);
-                return process != null;
-            }
-            catch
-            {
-                return false;
-            }
-        });
-    }
-
-    public Task<bool> TryOpenAsync(Uri uri)
-    {
-        return OpenAsync(uri);
-    }
+	public Task<bool> TryOpenAsync(Uri uri)
+	{
+		return OpenAsync(uri);
+	}
 }