Use base type property

StabilityMatrix.Avalonia/ViewModels/Inference/StackEditableCardViewModel.cs

@@ -62,7 +62,7 @@ public partial class StackEditableCardViewModel : StackViewModelBase
     partial void OnIsEditEnabledChanged(bool value)
     {
         // Propagate edit state to children
-        foreach (var module in Cards.OfType<ModuleBase>())
+        foreach (var module in Cards.OfType<StackExpanderViewModel>())
         {
             module.IsEditEnabled = value;
         }
@@ -73,7 +73,7 @@ public partial class StackEditableCardViewModel : StackViewModelBase
     {
         base.OnCardAdded(item);
 
-        if (item is ModuleBase module)
+        if (item is StackExpanderViewModel module)
         {
             // Inherit our edit state
             module.IsEditEnabled = IsEditEnabled;