Fix: [Activity View] Clear Finished no longer removes failed items that still have retry/dismiss actions

StabilityMatrix.Avalonia/ViewModels/Base/PausableProgressItemViewModelBase.cs

@@ -32,6 +32,13 @@ public abstract partial class PausableProgressItemViewModelBase : ProgressItemVi
     public override bool IsCompleted =>
         State is ProgressState.Success or ProgressState.Failed or ProgressState.Cancelled;
 
+    /// <summary>
+    /// Whether the item should be removed by a "Clear Finished" bulk operation.
+    /// Unlike <see cref="IsCompleted"/>, this excludes <see cref="ProgressState.Failed"/>
+    /// so that items with retry/dismiss buttons remain visible.
+    /// </summary>
+    public override bool IsClearable => State is ProgressState.Success or ProgressState.Cancelled;
+
     public virtual bool SupportsPauseResume => true;
     public virtual bool SupportsCancel => true;
 

StabilityMatrix.Avalonia/ViewModels/Base/ProgressItemViewModelBase.cs

@@ -16,5 +16,7 @@ public abstract partial class ProgressItemViewModelBase : ViewModelBase
 
     public virtual bool IsCompleted => Progress.Value >= 100 || Failed;
 
+    public virtual bool IsClearable => Progress.Value >= 100 && !Failed;
+
     public ContentDialogProgressViewModelBase Progress { get; init; } = new();
 }

StabilityMatrix.Avalonia/ViewModels/Progress/ProgressManagerViewModel.cs

@@ -401,7 +401,7 @@ public void StartEventListener()
 
     public void ClearDownloads()
     {
-        ProgressItems.RemoveAll(ProgressItems.Where(x => x.IsCompleted));
+        ProgressItems.RemoveAll(ProgressItems.Where(x => x.IsClearable));
     }
 
     private void OnProgressChanged(object? sender, ProgressItem e)