feat(worker): start_list_handler MCP-Tool startet einen List-Handler-Run wie der Button

src/ClaudeDo.Ui/Services/Interfaces/IWorkerClient.cs

@@ -30,6 +30,10 @@ public interface IWorkerClient : INotifyPropertyChanged
     /// task to carry out nextPhase ("wait" | "merge" | "wait_final" | "merge_final").</summary>
     event Action<string, IReadOnlyList<string>, string>? HandoffRequestedEvent;
 
+    /// <summary>start_list_handler was called through the external MCP: (listId, taskIds). The UI
+    /// starts a list-handler run for them exactly like the "Let Claude handle it" button.</summary>
+    event Action<string, IReadOnlyList<string>>? ListHandlerStartRequestedEvent;
+
     /// <summary>An agent added a note through the MCP tool — an open notes editor reloads.</summary>
     event Action? NotesUpdatedEvent;
 

src/ClaudeDo.Ui/Services/WorkerClient.cs

@@ -49,6 +49,7 @@ public partial class WorkerClient : ObservableObject, IAsyncDisposable, IWorkerC
     public event Action<string, string, string>? TaskQuestionAskedEvent;
     public event Action<string, string>? TaskQuestionResolvedEvent;
     public event Action<string, IReadOnlyList<string>, string>? HandoffRequestedEvent;
+    public event Action<string, IReadOnlyList<string>>? ListHandlerStartRequestedEvent;
     public event Action? ConnectionRestoredEvent;
     public event Action<string>? WorktreeUpdatedEvent;
     public event Action<string>? ListUpdatedEvent;
@@ -159,6 +160,11 @@ public partial class WorkerClient : ObservableObject, IAsyncDisposable, IWorkerC
             Dispatcher.UIThread.Post(() => HandoffRequestedEvent?.Invoke(taskId, survivingTaskIds, nextPhase));
         });
 
+        _hub.On<string, IReadOnlyList<string>>("ListHandlerStartRequested", (listId, taskIds) =>
+        {
+            Dispatcher.UIThread.Post(() => ListHandlerStartRequestedEvent?.Invoke(listId, taskIds));
+        });
+
         _hub.On<string>("WorktreeUpdated", taskId =>
         {
             Dispatcher.UIThread.Post(() => WorktreeUpdatedEvent?.Invoke(taskId));