Flyout fixes

ShellDemo/AppShell.xaml.cs

@@ -1,13 +1,22 @@
 // AppShell - Shell navigation with flyout menu
 
+using System.Reflection;
 using Microsoft.Maui.Controls;
 
 namespace ShellDemo;
 
 public partial class AppShell : Shell
 {
+    public string AppVersion { get; }
+
     public AppShell()
     {
+        // Get app version from assembly
+        var version = Assembly.GetExecutingAssembly().GetName().Version;
+        AppVersion = $"OpenMaui v{version?.Major ?? 1}.{version?.Minor ?? 0}.{version?.Build ?? 0}";
+
+        BindingContext = this;
+
         InitializeComponent();
 
         // Register routes for push navigation (pages not in flyout)