feat(ui): tickets + plan day button, fallback list and prime action

src/ClaudeDo.Ui/ViewModels/Islands/DetailsIslandViewModel.cs

@@ -581,6 +581,7 @@ public sealed partial class DetailsIslandViewModel : ViewModelBase, IDisposable
         Bind(null, "prep");
         IsPrepMode = true;
         _ = Prep.LoadLastPrepLogIfEmptyAsync();
+        _ = Prep.RefreshTicketsConfiguredAsync();
     }
 
     /// <param name="source">What triggered the selection (<see cref="TasksIslandViewModel.SelectionSource"/>);