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

<UserControl xmlns="https://github.com/avaloniaui"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:vm="using:ClaudeDo.Ui.ViewModels"
             xmlns:vmm="using:ClaudeDo.Ui.ViewModels.MissionControl"
             xmlns:mc="using:ClaudeDo.Ui.Views.MissionControl"
             xmlns:controls="using:ClaudeDo.Ui.Views.Controls"
             xmlns:loc="using:ClaudeDo.Ui.Localization"
             x:DataType="vm:MissionControlViewModel"
             x:Class="ClaudeDo.Ui.Views.MissionControl.MissionControlView">
  <UserControl.DataTemplates>
    <!-- ConPtyPaneHost reuses the pane's one long-lived view across layout rebuilds and
         tab switches — instantiating ConPtyPaneView here directly would detach (and, without
         reparent suppression, kill) the running session every time a pane is added. -->
    <DataTemplate DataType="vmm:ConPtyPaneViewModel">
      <mc:ConPtyPaneHost Margin="6" />
    </DataTemplate>
  </UserControl.DataTemplates>
  <DockPanel LastChildFill="True" Background="{DynamicResource VoidBrush}">

    <!-- Header -->
    <Border DockPanel.Dock="Top"
            Background="{DynamicResource DeepBrush}"
            BorderBrush="{DynamicResource LineBrush}"
            BorderThickness="0,0,0,1" Padding="14,8">
      <Grid ColumnDefinitions="*,Auto">
        <TextBlock Grid.Column="0" Classes="eyebrow"
                   Text="{loc:Tr missionControl.windowTitle}"
                   Foreground="{DynamicResource TextBrush}"
                   LetterSpacing="1.4" VerticalAlignment="Center" />
        <StackPanel Grid.Column="1" Orientation="Horizontal" Spacing="8"
                    VerticalAlignment="Center">
          <controls:UsagePill DataContext="{Binding UsagePill}"
                               Margin="0,0,4,0"
                               VerticalAlignment="Center"/>
          <Button Classes="icon-btn"
                  Click="OnNewSessionClicked"
                  ToolTip.Tip="{loc:Tr missionControl.newSession}">
            <PathIcon Data="{StaticResource Icon.Plus}" Width="15" Height="15"
                      Foreground="{DynamicResource TextMuteBrush}"/>
          </Button>
          <Button Classes="icon-btn"
                  Command="{Binding ToggleLayoutCommand}"
                  ToolTip.Tip="{Binding LayoutToggleLabel}">
            <PathIcon Data="{StaticResource Icon.Grid}" Width="15" Height="15"
                      Foreground="{DynamicResource TextMuteBrush}"/>
          </Button>
          <Button Classes="icon-btn"
                  Command="{Binding OpenSettingsCommand}"
                  ToolTip.Tip="{loc:Tr missionControl.settings}">
            <PathIcon Data="{StaticResource Icon.Settings}" Width="15" Height="15"
                      Foreground="{DynamicResource TextMuteBrush}"/>
          </Button>
        </StackPanel>
      </Grid>
    </Border>

    <!-- Body: main content | queue splitter | queue strip (widths managed in code-behind
         so the queue column collapses to zero when nothing is queued). -->
    <Grid x:Name="BodyGrid">
      <Grid.ColumnDefinitions>
        <ColumnDefinition Width="*"/>
        <ColumnDefinition Width="Auto"/>
        <ColumnDefinition Width="0"/>
      </Grid.ColumnDefinitions>

      <!-- Grid / tabs / empty state -->
      <Panel Grid.Column="0" Margin="6">
        <!-- Overview mode: a real Grid built in code-behind so each pane is individually
             resizable via GridSplitters, instead of a UniformGrid where every cell is forced
             to the same size. -->
        <Grid x:Name="OverviewGrid" IsVisible="{Binding !IsFocusMode}" />

        <!-- Focus mode: one pane large, switched via tabs -->
        <TabControl ItemsSource="{Binding Panes}"
                    SelectedItem="{Binding FocusedPane}"
                    IsVisible="{Binding IsFocusMode}">
          <TabControl.ItemTemplate>
            <DataTemplate x:DataType="vmm:ConPtyPaneViewModel">
              <TextBlock Text="{Binding DisplayTitle}" TextTrimming="CharacterEllipsis" MaxWidth="160" />
            </DataTemplate>
          </TabControl.ItemTemplate>
        </TabControl>

        <TextBlock IsVisible="{Binding !HasPanes}"
                   Text="{loc:Tr missionControl.empty}"
                   Foreground="{DynamicResource TextMuteBrush}"
                   HorizontalAlignment="Center" VerticalAlignment="Center" />
      </Panel>

      <GridSplitter x:Name="QueueSplitter" Grid.Column="1"
                    IsVisible="{Binding HasQueued}"
                    Width="6"
                    Background="Transparent"
                    HorizontalAlignment="Stretch" VerticalAlignment="Stretch"
                    ResizeDirection="Columns"
                    ResizeBehavior="PreviousAndNext"/>

      <!-- Read-only queue strip — collapses when nothing is queued -->
      <Border Grid.Column="2"
              IsVisible="{Binding HasQueued}"
              Background="{DynamicResource DeepBrush}"
              BorderBrush="{DynamicResource LineBrush}"
              BorderThickness="1,0,0,0">
        <DockPanel LastChildFill="True" Margin="10,10">
          <TextBlock DockPanel.Dock="Top" Classes="eyebrow"
                     Text="{loc:Tr missionControl.queue}"
                     Foreground="{DynamicResource TextMuteBrush}"
                     LetterSpacing="1.4" Margin="0,0,0,8" />
          <ScrollViewer>
            <ItemsControl ItemsSource="{Binding Queued}">
              <ItemsControl.ItemTemplate>
                <DataTemplate x:DataType="vm:QueuedTaskViewModel">
                  <Button Command="{Binding OpenInAppCommand}"
                          Padding="0" Margin="0,0,0,4"
                          Background="Transparent" BorderThickness="0"
                          HorizontalAlignment="Stretch" HorizontalContentAlignment="Stretch"
                          Cursor="Hand">
                    <Panel>
                      <Border Background="{DynamicResource SurfaceBrush}"
                              BorderBrush="{DynamicResource LineBrush}"
                              BorderThickness="1" CornerRadius="6" />
                      <Border Background="{DynamicResource RunningTintBrush}"
                              BorderBrush="{DynamicResource RunningTintBorderBrush}"
                              BorderThickness="1" CornerRadius="6"
                              IsVisible="{Binding IsRunning}" />
                      <StackPanel Margin="8,6" Spacing="2">
                        <TextBlock Text="{Binding Title}"
                                   TextTrimming="CharacterEllipsis"
                                   ToolTip.Tip="{Binding Title}"
                                   Foreground="{DynamicResource TextDimBrush}" />
                        <TextBlock Classes="meta"
                                   Text="{loc:Tr missionControl.blocked}"
                                   IsVisible="{Binding IsBlocked}"
                                   Foreground="{DynamicResource AmberBrush}" />
                        <TextBlock Classes="meta"
                                   Text="{loc:Tr missionControl.running}"
                                   IsVisible="{Binding IsRunning}"
                                   Foreground="{DynamicResource StatusRunningBrush}" />
                      </StackPanel>
                    </Panel>
                  </Button>
                </DataTemplate>
              </ItemsControl.ItemTemplate>
            </ItemsControl>
          </ScrollViewer>
        </DockPanel>
      </Border>
    </Grid>

  </DockPanel>
</UserControl>