chore(ui): remove dead Mission Control monitor-pane stack

Auto-seeding of monitor tiles was disabled in 724814f; Mission Control now
only shows ConPTY panes. Removes Monitors/EnsureMonitor/SeedActive, the
detach/re-dock machinery, MonitorPaneView and the detached monitor window,
plus their tests and orphaned localization keys.

TaskMonitorViewModel itself stays: DetailsIslandViewModel still uses it as
the backing state for the task Log/AgentState/AskUser-question UI, so only
its Mission-Control-only members (Title/DisplayTitle, detach, cancel command,
IMissionControlPane) were stripped. IMissionControlPane/Panes were kept
(now a 1:1 mirror of ConPtySessions) rather than dissolved, to avoid
churning the still-live ConPTY pane tests and AXAML for a single-implementer
interface.

Visual verification still open: Mission Control with several open ConPTY
tiles, and the Focus/Overview toggle.

src/ClaudeDo.Ui/Views/Islands/DetailsIslandView.axaml

@@ -81,8 +81,7 @@
             </StackPanel>
           </Border>
 
-          <!-- Question prompt (AskUser): answer the running task's question inline, mirroring
-               the Mission Control banner. State is shared via the same TaskMonitorViewModel. -->
+          <!-- Question prompt (AskUser): answer the running task's question inline. -->
           <Border DockPanel.Dock="Top"
                   IsVisible="{Binding Monitor.HasPendingQuestion}"
                   Margin="0,0,0,10" Padding="12,8"

src/ClaudeDo.Ui/Views/MissionControl/MissionControlView.axaml

@@ -1,24 +1,17 @@
 <UserControl xmlns="https://github.com/avaloniaui"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              xmlns:vm="using:ClaudeDo.Ui.ViewModels"
-             xmlns:vmi="using:ClaudeDo.Ui.ViewModels.Islands"
              xmlns:vmm="using:ClaudeDo.Ui.ViewModels.MissionControl"
              xmlns:mc="using:ClaudeDo.Ui.Views.MissionControl"
              xmlns:loc="using:ClaudeDo.Ui.Localization"
              x:DataType="vm:MissionControlViewModel"
              x:Class="ClaudeDo.Ui.Views.MissionControl.MissionControlView">
   <UserControl.DataTemplates>
-    <!-- Polymorphic pane templates: both the grid ItemsControl and the focus-mode TabControl
-         resolve per-item content through these (no explicit ItemTemplate on either). -->
-    <DataTemplate DataType="vmi:TaskMonitorViewModel">
-      <mc:MonitorPaneView Margin="6" />
-    </DataTemplate>
     <DataTemplate DataType="vmm:ConPtyPaneViewModel">
       <mc:ConPtyPaneView Margin="6" />
     </DataTemplate>
   </UserControl.DataTemplates>
-  <DockPanel LastChildFill="True" Background="{DynamicResource VoidBrush}"
-             DragDrop.AllowDrop="True">
+  <DockPanel LastChildFill="True" Background="{DynamicResource VoidBrush}">
 
     <!-- Header -->
     <Border DockPanel.Dock="Top"
@@ -50,9 +43,6 @@
             <PathIcon Data="{StaticResource Icon.Settings}" Width="15" Height="15"
                       Foreground="{DynamicResource TextMuteBrush}"/>
           </Button>
-          <Button Classes="btn"
-                  Content="{loc:Tr missionControl.clearFinished}"
-                  Command="{Binding ClearFinishedCommand}" />
         </StackPanel>
       </Grid>
     </Border>

src/ClaudeDo.Ui/Views/MissionControl/MissionControlView.axaml.cs

@@ -1,25 +1,15 @@
-using System.Linq;
 using Avalonia.Controls;
-using Avalonia.Input;
 using Avalonia.Interactivity;
 using Avalonia.Platform.Storage;
-using Avalonia.VisualTree;
 using ClaudeDo.Ui.ViewModels;
-using ClaudeDo.Ui.ViewModels.Islands;
 
 namespace ClaudeDo.Ui.Views.MissionControl;
 
 public partial class MissionControlView : UserControl
 {
-    // Shared with MonitorPaneView (the drag source).
-    public static readonly DataFormat<string> PaneFormat =
-        DataFormat.CreateStringApplicationFormat("claudedo-monitor-pane");
-
     public MissionControlView()
     {
         InitializeComponent();
-        AddHandler(DragDrop.DragOverEvent, OnPaneDragOver);
-        AddHandler(DragDrop.DropEvent, OnPaneDrop);
     }
 
     // Ad-hoc ConPTY session: the view owns the folder picker, the VM only takes the chosen path.
@@ -38,31 +28,4 @@ public partial class MissionControlView : UserControl
 
         await vm.OpenAdHocConPtySessionAsync(folders[0].Path.LocalPath);
     }
-
-    private void OnPaneDragOver(object? sender, DragEventArgs e)
-    {
-        var dt = e.DataTransfer;
-        e.DragEffects = (dt?.Contains(PaneFormat) ?? false) ? DragDropEffects.Move : DragDropEffects.None;
-    }
-
-    private void OnPaneDrop(object? sender, DragEventArgs e)
-    {
-        if (DataContext is not MissionControlViewModel vm) return;
-        var dt = e.DataTransfer;
-        if (dt is null) return;
-
-        // A pane dragged within the grid → reorder. (Drag-to-queue from the main app now arrives
-        // via the custom ghost drag's screen hit-test, not an OLE drop.)
-        var draggedId = dt.TryGetValue(PaneFormat);
-        if (string.IsNullOrEmpty(draggedId)) return;
-        if (e.Source is not Avalonia.Visual src) return;
-
-        var targetPane = src.FindAncestorOfType<MonitorPaneView>();
-        if (targetPane?.DataContext is not TaskMonitorViewModel target) return;
-
-        var dragged = vm.Monitors.FirstOrDefault(m => m.SubscribedTaskId == draggedId);
-        if (dragged is null) return;
-
-        vm.MoveMonitor(dragged, target);
-    }
 }

src/ClaudeDo.Ui/Views/MissionControl/MonitorPaneView.axaml

@@ -1,114 +0,0 @@
-<UserControl xmlns="https://github.com/avaloniaui"
-             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-             xmlns:vm="using:ClaudeDo.Ui.ViewModels.Islands"
-             xmlns:islands="using:ClaudeDo.Ui.Views.Islands"
-             xmlns:loc="using:ClaudeDo.Ui.Localization"
-             x:DataType="vm:TaskMonitorViewModel"
-             x:Class="ClaudeDo.Ui.Views.MissionControl.MonitorPaneView">
-  <Border Classes="monitor-pane"
-          DragDrop.AllowDrop="True"
-          Classes.mon-review="{Binding IsWaitingForReview}"
-          Classes.mon-done="{Binding IsDone}"
-          Classes.mon-roadblock="{Binding HasRoadblock}"
-          Classes.mon-failed="{Binding IsFailed}"
-          BorderThickness="1" CornerRadius="10" ClipToBounds="True">
-    <DockPanel LastChildFill="True">
-
-      <!-- Header: per-task action icons -->
-      <Border DockPanel.Dock="Top"
-              Background="{DynamicResource Surface2Brush}"
-              BorderBrush="{DynamicResource LineBrush}"
-              BorderThickness="0,0,0,1" Padding="6,3"
-              PointerPressed="OnHeaderPressed">
-        <StackPanel Orientation="Horizontal" Spacing="2"
-                    HorizontalAlignment="Right" VerticalAlignment="Center">
-          <Button Classes="title-ctrl"
-                  Command="{Binding OpenInAppCommand}"
-                  ToolTip.Tip="{loc:Tr missionControl.openInApp}">
-            <PathIcon Data="{StaticResource Icon.ArrowOut}" Width="12" Height="12"/>
-          </Button>
-          <Button Classes="title-ctrl"
-                  Command="{Binding DetachCommand}"
-                  ToolTip.Tip="{Binding DetachTooltip}">
-            <PathIcon Data="{StaticResource Icon.WinMax}" Width="12" Height="12"/>
-          </Button>
-          <Button Classes="title-ctrl"
-                  Command="{Binding CancelTaskCommand}"
-                  IsVisible="{Binding IsRunning}"
-                  ToolTip.Tip="{loc:Tr missionControl.cancel}">
-            <PathIcon Data="{StaticResource Icon.WinClose}" Width="12" Height="12"/>
-          </Button>
-        </StackPanel>
-      </Border>
-
-      <!-- Roadblock banner (amber) -->
-      <Border DockPanel.Dock="Top"
-              IsVisible="{Binding HasRoadblock}"
-              Background="{DynamicResource RoadblockTintBrush}"
-              BorderBrush="{DynamicResource AmberBrush}"
-              BorderThickness="0,0,0,1" Padding="12,6">
-        <StackPanel Orientation="Horizontal" Spacing="8">
-          <PathIcon Data="{StaticResource Icon.Warning}"
-                    Foreground="{DynamicResource AmberBrush}"
-                    Width="13" Height="13" VerticalAlignment="Center" />
-          <TextBlock Classes="meta" Text="{Binding Roadblocks}"
-                     Foreground="{DynamicResource AmberBrush}"
-                     TextWrapping="Wrap" VerticalAlignment="Center" />
-        </StackPanel>
-      </Border>
-
-      <!-- Failure banner (red) -->
-      <Border DockPanel.Dock="Top"
-              IsVisible="{Binding ShowRoadblock}"
-              Background="{DynamicResource ErrorTintBrush}"
-              BorderBrush="{DynamicResource BloodBrush}"
-              BorderThickness="0,0,0,1" Padding="12,6">
-        <StackPanel Orientation="Horizontal" Spacing="8">
-          <PathIcon Data="{StaticResource Icon.Warning}"
-                    Foreground="{DynamicResource BloodBrush}"
-                    Width="13" Height="13" VerticalAlignment="Center" />
-          <TextBlock Classes="meta" Text="{Binding RoadblockMessage}"
-                     Foreground="{DynamicResource BloodBrush}"
-                     TextWrapping="Wrap" VerticalAlignment="Center" />
-        </StackPanel>
-      </Border>
-
-      <!-- Question prompt (AskUser): answer a running task's question inline -->
-      <Border DockPanel.Dock="Top"
-              IsVisible="{Binding HasPendingQuestion}"
-              Background="{DynamicResource AccentSoftBrush}"
-              BorderBrush="{DynamicResource AccentBrush}"
-              BorderThickness="0,0,0,1" Padding="12,8">
-        <StackPanel Spacing="6">
-          <TextBlock Classes="meta"
-                     Text="{loc:Tr missionControl.question.title}"
-                     Foreground="{DynamicResource AccentBrush}" FontWeight="SemiBold" />
-          <TextBlock Text="{Binding PendingQuestion}" TextWrapping="Wrap"
-                     Foreground="{DynamicResource TextBrush}" />
-          <Grid ColumnDefinitions="*,Auto" ColumnSpacing="6">
-            <TextBox Grid.Column="0"
-                     Text="{Binding AnswerDraft, UpdateSourceTrigger=PropertyChanged}"
-                     PlaceholderText="{loc:Tr missionControl.question.placeholder}"
-                     AcceptsReturn="False">
-              <TextBox.KeyBindings>
-                <KeyBinding Gesture="Enter" Command="{Binding SubmitAnswerCommand}" />
-              </TextBox.KeyBindings>
-            </TextBox>
-            <Button Grid.Column="1"
-                    Content="{loc:Tr missionControl.question.send}"
-                    Command="{Binding SubmitAnswerCommand}" />
-          </Grid>
-        </StackPanel>
-      </Border>
-
-      <!-- Console body: reuse SessionTerminalView -->
-      <islands:SessionTerminalView
-          Entries="{Binding Log}"
-          Label="{Binding DisplayTitle}"
-          IsRunning="{Binding IsRunning}"
-          IsDone="{Binding IsDone}"
-          IsFailed="{Binding IsFailed}" />
-
-    </DockPanel>
-  </Border>
-</UserControl>

src/ClaudeDo.Ui/Views/MissionControl/MonitorPaneView.axaml.cs

@@ -1,26 +0,0 @@
-using Avalonia.Controls;
-using Avalonia.Input;
-using Avalonia.VisualTree;
-using ClaudeDo.Ui.ViewModels.Islands;
-
-namespace ClaudeDo.Ui.Views.MissionControl;
-
-public partial class MonitorPaneView : UserControl
-{
-    public MonitorPaneView() => InitializeComponent();
-
-    private async void OnHeaderPressed(object? sender, PointerPressedEventArgs e)
-    {
-        if (DataContext is not TaskMonitorViewModel m || m.SubscribedTaskId is not { } id) return;
-        if (e.Source is not Avalonia.Visual src) return;
-        if (!e.GetCurrentPoint(this).Properties.IsLeftButtonPressed) return;
-
-        // Don't start a drag when the press landed on a header action button.
-        var button = src as Button ?? src.FindAncestorOfType<Button>();
-        if (button is not null) return;
-
-        var data = new DataTransfer();
-        data.Add(DataTransferItem.Create(MissionControlView.PaneFormat, id));
-        await DragDrop.DoDragDropAsync(e, data, DragDropEffects.Move);
-    }
-}

src/ClaudeDo.Ui/Views/MissionControl/TaskMonitorWindow.axaml

@@ -1,12 +0,0 @@
-<Window xmlns="https://github.com/avaloniaui"
-        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-        xmlns:vm="using:ClaudeDo.Ui.ViewModels.Islands"
-        xmlns:mc="using:ClaudeDo.Ui.Views.MissionControl"
-        x:Class="ClaudeDo.Ui.Views.MissionControl.TaskMonitorWindow"
-        x:DataType="vm:TaskMonitorViewModel"
-        Title="{Binding DisplayTitle}"
-        Width="560" Height="620" MinWidth="360" MinHeight="320"
-        Background="{DynamicResource VoidBrush}"
-        Icon="avares://ClaudeDo.Ui/Assets/ClaudeTask.ico">
-  <mc:MonitorPaneView />
-</Window>

src/ClaudeDo.Ui/Views/MissionControl/TaskMonitorWindow.axaml.cs

@@ -1,23 +0,0 @@
-using System;
-using Avalonia.Controls;
-
-namespace ClaudeDo.Ui.Views.MissionControl;
-
-public partial class TaskMonitorWindow : Window
-{
-    public TaskMonitorWindow() => InitializeComponent();
-
-    protected override void OnOpened(EventArgs e)
-    {
-        base.OnOpened(e);
-        if (DataContext is ClaudeDo.Ui.ViewModels.Islands.TaskMonitorViewModel vm)
-            vm.CloseWindowRequested = Close;
-    }
-
-    protected override void OnClosed(EventArgs e)
-    {
-        if (DataContext is ClaudeDo.Ui.ViewModels.Islands.TaskMonitorViewModel vm)
-            vm.CloseWindowRequested = null;
-        base.OnClosed(e);
-    }
-}

src/ClaudeDo.Ui/Views/WindowDialogService.cs

@@ -9,7 +9,6 @@ using Avalonia.Media;
 using ClaudeDo.Ui.Services;
 using ClaudeDo.Ui.ViewModels;
 using ClaudeDo.Ui.ViewModels.Conflicts;
-using ClaudeDo.Ui.ViewModels.Islands;
 using ClaudeDo.Ui.ViewModels.Modals;
 using ClaudeDo.Ui.Views.Conflicts;
 using ClaudeDo.Ui.Views.MissionControl;
@@ -146,13 +145,6 @@ public sealed class WindowDialogService : IDialogService
         _missionControl.Activate();          // bring to front / focus
     }
 
-    public void ShowDetachedMonitor(TaskMonitorViewModel monitor, Action onClosed)
-    {
-        var win = new TaskMonitorWindow { DataContext = monitor };
-        win.Closed += (_, _) => onClosed();   // closing re-docks into the grid
-        win.Show();                            // modeless, independent
-    }
-
     public Task<bool> ConfirmAsync(string message)
     {
         var tcs = new TaskCompletionSource<bool>();