Add the Broadcast Data dialog and send N1MM's score breakdown

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

src/Nonemm.App/Windows/EntryWindow.Menu.cs

@@ -568,6 +568,19 @@ public sealed partial class EntryWindow
         }
     }
 
+    private async void OnBroadcastSettings(object? sender, RoutedEventArgs e)
+    {
+        BroadcastDataDialog dialog = new(session.Settings);
+        Settings? updated = await dialog.ShowDialog<Settings?>(this);
+        if (updated is not null)
+        {
+            session.Save(updated);
+            session.ApplyNetworkSettings();
+            session.ApplyBroadcastSettings();
+            Status("broadcast data saved");
+        }
+    }
+
     /// What the two networks are now doing, for the status line.
     private static string Networking(Settings settings) =>
         (settings.NetworkEnabled, settings.StationLinkEnabled) switch