v1.08 — Custom Fluent confirmation dialog, replace all MessageBox

- New ConfirmDialog overlay with dark backdrop, rounded card, shadow
- Warning/Question/Error icon types with accent colors
- Replaced all MessageBox.Show calls (RemovePage, PreInstallCheck, Troubleshoot)
- Click outside dialog = cancel

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Pages/PreInstallCheckPage.xaml.cs

@@ -62,6 +62,13 @@ namespace InstaSoftOfficeTool.Pages
 
         private async void BtnRemove_Click(object sender, RoutedEventArgs e)
         {
+            bool confirmed = await _main.ConfirmAsync(
+                "Office elt\u00e1vol\u00edt\u00e1s",
+                "Biztosan el szeretn\u00e9 t\u00e1vol\u00edtani a kiv\u00e1lasztott Office telep\u00edt\u00e9seket az \u00faj verzi\u00f3 telep\u00edt\u00e9se el\u0151tt?",
+                "Elt\u00e1vol\u00edt\u00e1s", "M\u00e9gse");
+
+            if (!confirmed) return;
+
             BtnRemove.IsEnabled = false;
             BtnSkip.IsEnabled = false;
             LogPanel.Visibility = Visibility.Visible;