feat(ui): add Visual Studio icon to application (#4)

- Extract VS 2026 icon from devenv.exe for use in the app
- Add ICO file for window/taskbar icon via AppWindow.SetIcon()
- Add PNG file for system tray icon via TrayIconService
- Update csproj to include icon assets

Closes #1

Author: CalvinAllen

src/CodingWithCalvin.VSToolbox/App.xaml.cs

@@ -30,6 +30,13 @@ protected override void OnLaunched(LaunchActivatedEventArgs e)
         var windowId = Win32Interop.GetWindowIdFromWindow(hwnd);
         _appWindow = AppWindow.GetFromWindowId(windowId);
 
+        // Set the window/taskbar icon
+        var iconPath = Path.Combine(AppContext.BaseDirectory, "Assets", "vs2026_icon.ico");
+        if (File.Exists(iconPath))
+        {
+            _appWindow.SetIcon(iconPath);
+        }
+
         // Set up the main content
         var rootFrame = new Frame();
         rootFrame.NavigationFailed += OnNavigationFailed;

src/CodingWithCalvin.VSToolbox/Assets/vs2026_icon.ico

@@ -30,6 +30,8 @@
         <Content Include="Assets\Square44x44Logo.scale-200.png" />
         <Content Include="Assets\Square44x44Logo.targetsize-24_altform-unplated.png" />
         <Content Include="Assets\StoreLogo.png" />
+        <Content Include="Assets\vs2026_icon.png" />
+        <Content Include="Assets\vs2026_icon.ico" />
         <Content Include="Assets\Wide310x150Logo.scale-200.png" />
     </ItemGroup>
 

src/CodingWithCalvin.VSToolbox/Assets/vs2026_icon.png

@@ -46,19 +46,24 @@ public void Initialize(Window window)
 
     private static Icon? GetAppIcon()
     {
-        // Try to get the app's icon from the executable
-        var exePath = Environment.ProcessPath;
-        if (!string.IsNullOrEmpty(exePath) && File.Exists(exePath))
+        // Try to load the VS icon from Assets
+        var appDir = AppContext.BaseDirectory;
+        var iconPath = Path.Combine(appDir, "Assets", "vs2026_icon.png");
+
+        if (File.Exists(iconPath))
         {
             try
             {
-                return Icon.ExtractAssociatedIcon(exePath);
+                using var bitmap = new Bitmap(iconPath);
+                var hIcon = bitmap.GetHicon();
+                return Icon.FromHandle(hIcon);
             }
             catch
             {
                 // Fall back to default
             }
         }
+
         return SystemIcons.Application;
     }