ClaudeDo/src/ClaudeDo.Ui/Views/Modals/MergeHelperSelectionModal.axaml

<Window xmlns="https://github.com/avaloniaui"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:vm="using:ClaudeDo.Ui.ViewModels.Modals"
        xmlns:ctl="using:ClaudeDo.Ui.Views.Controls"
        xmlns:loc="using:ClaudeDo.Ui.Localization"
        x:Class="ClaudeDo.Ui.Views.Modals.MergeHelperSelectionModal"
        x:DataType="vm:MergeHelperSelectionModalViewModel"
        Title="{loc:Tr modals.mergeHelper.windowTitle}"
        Width="560" Height="480" MinWidth="420" MinHeight="320"
        CanResize="True"
        WindowDecorations="BorderOnly"
        ExtendClientAreaToDecorationsHint="True"
        ExtendClientAreaTitleBarHeightHint="-1"
        WindowStartupLocation="CenterOwner"
        Background="{DynamicResource SurfaceBrush}">
  <Window.KeyBindings>
    <KeyBinding Gesture="Escape" Command="{Binding CancelCommand}"/>
  </Window.KeyBindings>

  <ctl:ModalShell Title="{loc:Tr modals.mergeHelper.title}" CloseCommand="{Binding CancelCommand}">
    <ctl:ModalShell.Footer>
      <StackPanel Orientation="Horizontal" Spacing="8" HorizontalAlignment="Right"
                  VerticalAlignment="Center">
        <Button Classes="btn" Content="{loc:Tr modals.mergeHelper.cancel}" Command="{Binding CancelCommand}" MinWidth="90"/>
        <Button Content="{loc:Tr modals.mergeHelper.confirm}" Command="{Binding ConfirmCommand}"
                IsEnabled="{Binding CanConfirm}" MinWidth="140" Classes="primary"/>
      </StackPanel>
    </ctl:ModalShell.Footer>

    <!-- Body: scope + select-all/none toolbar, headers, checkbox rows -->
    <DockPanel>
      <Grid DockPanel.Dock="Top" ColumnDefinitions="*,Auto,Auto,Auto" Margin="20,12,20,6">
        <TextBlock Grid.Column="0" Classes="meta" Text="{Binding ScopeLabel}" VerticalAlignment="Center"/>
        <StackPanel Grid.Column="1" Orientation="Horizontal" Spacing="6" Margin="0,0,12,0"
                    IsVisible="{Binding ShowModelPicker}"
                    ToolTip.Tip="{loc:Tr modals.mergeHelper.modelTip}">
          <TextBlock Classes="meta" Text="{loc:Tr modals.mergeHelper.modelLabel}" VerticalAlignment="Center"/>
          <ComboBox MinWidth="90" ItemsSource="{Binding ModelOptions}"
                    SelectedItem="{Binding SelectedModel, Mode=TwoWay}"/>
        </StackPanel>
        <Button Grid.Column="2" Classes="btn" Content="{loc:Tr modals.mergeHelper.selectAll}"
                Command="{Binding SelectAllCommand}" IsEnabled="{Binding HasTasks}"/>
        <Button Grid.Column="3" Classes="btn" Content="{loc:Tr modals.mergeHelper.selectNone}"
                Command="{Binding SelectNoneCommand}" IsEnabled="{Binding HasTasks}" Margin="8,0,0,0"/>
      </Grid>

      <!-- Column headers -->
      <Grid DockPanel.Dock="Top" ColumnDefinitions="24,32,*,140" Margin="20,0,20,4"
            IsVisible="{Binding HasTasks}">
        <TextBlock Grid.Column="2" Classes="eyebrow" Text="{loc:Tr modals.mergeHelper.columnTask}"/>
        <TextBlock Grid.Column="3" Classes="eyebrow" Text="{loc:Tr modals.mergeHelper.columnStatus}"/>
      </Grid>

      <ScrollViewer>
        <StackPanel Margin="20,2,20,8">
          <TextBlock Classes="meta" Margin="0,8"
                     Text="{loc:Tr modals.mergeHelper.empty}"
                     IsVisible="{Binding !HasTasks}"/>
          <ItemsControl ItemsSource="{Binding Tasks}">
            <ItemsControl.ItemTemplate>
              <DataTemplate DataType="vm:MergeHelperTaskRowViewModel">
                <Grid ColumnDefinitions="24,32,*,140" Margin="0,1">
                  <!-- Review mode: non-selectable list-name section header -->
                  <TextBlock Grid.Column="0" Grid.ColumnSpan="3" Classes="eyebrow"
                             Text="{Binding Title}" IsVisible="{Binding IsListHeader}"
                             Margin="0,10,0,2" VerticalAlignment="Center"/>
                  <!-- Indent track for children, matching the task list's parent/child rendering -->
                  <Border Grid.Column="0" Width="24" IsVisible="{Binding IsChild}" VerticalAlignment="Stretch">
                    <Rectangle Width="1" Fill="{DynamicResource LineBrush}"
                               HorizontalAlignment="Right" Margin="0,4"/>
                  </Border>
                  <CheckBox Grid.Column="1" MinWidth="0"
                            IsChecked="{Binding IsSelected, Mode=TwoWay}"
                            IsVisible="{Binding !IsListHeader}"
                            VerticalAlignment="Center"/>
                  <Grid Grid.Column="2" ColumnDefinitions="Auto,*,Auto"
                        IsVisible="{Binding !IsListHeader}"
                        VerticalAlignment="Center">
                    <TextBlock Grid.Column="0" Classes="meta"
                               Text="{Binding Number, StringFormat='#{0}'}"
                               IsVisible="{Binding ShowNumber}"
                               VerticalAlignment="Center" Margin="4,0,6,0"/>
                    <TextBlock Grid.Column="1" Classes="body" Text="{Binding Title}"
                               VerticalAlignment="Center" Margin="4,0,0,0"
                               TextWrapping="Wrap"/>
                    <Border Grid.Column="2" Classes="badge manual" VerticalAlignment="Center"
                            Margin="4,0,0,0"
                            IsVisible="{Binding IsOrphanChild}"
                            ToolTip.Tip="{loc:Tr modals.mergeHelper.orphanHintTip}">
                      <TextBlock Text="{loc:Tr modals.mergeHelper.orphanHint}"/>
                    </Border>
                  </Grid>
                  <Border Grid.Column="3" Classes="chip"
                          IsVisible="{Binding !IsListHeader}"
                          HorizontalAlignment="Left" VerticalAlignment="Center">
                    <TextBlock Text="{Binding StatusText}"/>
                  </Border>
                </Grid>
              </DataTemplate>
            </ItemsControl.ItemTemplate>
          </ItemsControl>
        </StackPanel>
      </ScrollViewer>
    </DockPanel>

  </ctl:ModalShell>
</Window>