fix: bootstrapper dry run fix

Kiseki.Launcher.Windows/MainWindow.cs

@@ -31,11 +31,19 @@ public class MainWindow : Form
             Buttons = { CloseButton }
         };
 
-        Page.Created += (s, e) =>
+        Page.Created += (_, _) =>
         {
+            if (Bootstrapper.Initialize())
                 Bootstrapper.Run();
         };
 
+        // This is a small hack to ensure that the underlying Form that MainWindow has
+        // doesn't open when the TaskDialogPage is destroyed.
+        Page.Destroyed += (_, _) =>
+        {
+            Environment.Exit(0);
+        };
+
         ShowTaskDialog();
     }
 
@@ -75,8 +83,8 @@ public class MainWindow : Form
 
     private void Bootstrapper_Errored(object? sender, string[] texts)
     {
-        Page.Icon = TaskDialogIcon.Error;
         Page.Heading = texts[0];
         Page.Text = texts[1];
+        Page.ProgressBar!.State = TaskDialogProgressBarState.Error;
     }
 }

Kiseki.Launcher.Windows/Win32.cs

@@ -1,7 +1,5 @@
-using System.Runtime.InteropServices;
+namespace Kiseki.Launcher.Windows;
 
-namespace Kiseki.Launcher.Windows
-{
 public static class Win32
 {
     // Ref: https://learn.microsoft.com/en-us/windows/win32/msi/error-codes
@@ -15,4 +13,3 @@ namespace Kiseki.Launcher.Windows
         ERROR_INTERNAL_ERROR = 1359
     }
 }
-}