fix(ui): Mission Control oeffnen, wenn ein Handler-Run per MCP startet oder ein Handoff eintrifft

src/ClaudeDo.Ui/ViewModels/IslandsShellViewModel.cs

@@ -329,6 +329,7 @@ public sealed partial class IslandsShellViewModel : ViewModelBase, IDisposable
         UsagePill.OpenMonitorRequested += () => _ = OpenUsageMonitor();
         MissionControl.OpenInApp = id => _ = RevealTaskAsync(id);
         MissionControl.OpenSettingsRequested = () => Lists.OpenSettingsCommand.Execute(null);
+        MissionControl.OpenRequested = OpenMissionControl;
         MissionControl.ErrorReported += FlashFooterError;
         // Keep the task rows' "Interactive" chip in step with Mission Control's open ConPTY panes.
         MissionControl.ConPtySessions.CollectionChanged += (_, _) => SyncInteractiveSessionChips();

src/ClaudeDo.Ui/ViewModels/MissionControlViewModel.cs

@@ -58,6 +58,11 @@ public sealed partial class MissionControlViewModel : ViewModelBase, IDisposable
     // View-layer seam: open the app Settings modal from the Mission Control window.
     public Action? OpenSettingsRequested { get; set; }
 
+    // Set by the shell: bring Mission Control on screen. A ConPTY pane only launches its process once
+    // its view is attached, so a run started from outside the UI (start_list_handler MCP tool) or a
+    // handoff arriving while Mission Control is closed would otherwise sit there without a process.
+    public Action? OpenRequested { get; set; }
+
     public bool HasPanes => Panes.Count > 0;
 
     // Read-only activity strip. Beyond the queue itself (Queued/Running) it also carries the rows
@@ -100,7 +105,7 @@ public sealed partial class MissionControlViewModel : ViewModelBase, IDisposable
         _onHandoffRequested = (taskId, survivingTaskIds, nextPhase) => { _ = OpenMergeHelperHandoffConPtySessionAsync(taskId, survivingTaskIds, nextPhase); };
         _worker.HandoffRequestedEvent += _onHandoffRequested;
 
-        _onListHandlerStartRequested = (listId, taskIds) => { _ = OpenMergeHelperConPtySessionAsync(listId, taskIds); };
+        _onListHandlerStartRequested = (listId, taskIds) => { OpenRequested?.Invoke(); _ = OpenMergeHelperConPtySessionAsync(listId, taskIds); };
         _worker.ListHandlerStartRequestedEvent += _onListHandlerStartRequested;
         _onHandlerUsageWarning = (taskId, message) => { _ = WarnHandlerSessionAsync(taskId, message); };
         _worker.HandlerUsageWarningEvent += _onHandlerUsageWarning;
@@ -390,6 +395,7 @@ public sealed partial class MissionControlViewModel : ViewModelBase, IDisposable
         string taskId, IReadOnlyList<string> survivingTaskIds, string nextPhase)
     {
         if (string.IsNullOrEmpty(taskId) || survivingTaskIds is not { Count: > 0 }) return;
+        OpenRequested?.Invoke();
 
         foreach (var stale in ConPtySessions.Where(s => s.TaskId == taskId).ToList())
             CloseConPtySession(stale);