App icon: vwe.ico as the exe and window icon

ApplicationIcon embeds it in the exe (Explorer, taskbar); MainForm pulls
the same embedded icon for the title bar via ExtractAssociatedIcon.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/VRio.App/MainForm.cs

@@ -125,6 +125,8 @@ internal sealed class MainForm : Form
     {
         // ProductVersion carries the git stamp (see StampGitVersion in the csproj).
         Text = $"vRIO v{Application.ProductVersion} — Virtual RIO cockpit device";
+        // Title-bar/taskbar icon from the exe's embedded ApplicationIcon (vwe.ico).
+        Icon = Icon.ExtractAssociatedIcon(Application.ExecutablePath);
         // Fit the window to its content: the cockpit canvas plus the 330px
         // control strip, with just enough height for the strip's log area.
         ClientSize = new Size(_canvas.Width + 332, Math.Max(_canvas.Height, 640));

src/VRio.App/VRio.App.csproj

@@ -8,6 +8,7 @@
     <ImplicitUsings>enable</ImplicitUsings>
     <LangVersion>latest</LangVersion>
     <ApplicationManifest>app.manifest</ApplicationManifest>
+    <ApplicationIcon>vwe.ico</ApplicationIcon>
     <AssemblyTitle>vRIO — Virtual RIO device</AssemblyTitle>
     <!-- StampGitVersion already puts the sha in InformationalVersion; stop the
          SDK appending "+fullsha" on top of it. -->