refactor(ui): migrate ConflictResolutionView to ModalShell and use dynamic resources

Replace manual titlebar/drag handler with ModalShell, move action buttons to footer, convert StaticResource token attrs to DynamicResource, replace OrangeRed with BloodBrush, and use MonoFont DynamicResource.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/ClaudeDo.Ui/Views/Planning/ConflictResolutionView.axaml

@@ -1,6 +1,7 @@
 <Window xmlns="https://github.com/avaloniaui"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:vm="using:ClaudeDo.Ui.ViewModels.Planning"
+        xmlns:ctl="using:ClaudeDo.Ui.Views.Controls"
         x:DataType="vm:ConflictResolutionViewModel"
         x:Class="ClaudeDo.Ui.Views.Planning.ConflictResolutionView"
         Title="Merge conflict"
@@ -8,58 +9,42 @@
         WindowDecorations="None"
         ExtendClientAreaToDecorationsHint="True"
         WindowStartupLocation="CenterOwner"
-        Background="{StaticResource SurfaceBrush}">
+        Background="{DynamicResource SurfaceBrush}">
 
   <Window.KeyBindings>
     <KeyBinding Gesture="Escape" Command="{Binding AbortCommand}"/>
   </Window.KeyBindings>
 
-  <Border Background="{StaticResource SurfaceBrush}"
+  <ctl:ModalShell Title="MERGE CONFLICT" CloseCommand="{Binding AbortCommand}">
-          BorderBrush="{StaticResource LineBrush}"
+    <ctl:ModalShell.Footer>
-          BorderThickness="1">
+      <StackPanel Orientation="Horizontal" Spacing="8"
-    <Grid RowDefinitions="36,*">
+                  HorizontalAlignment="Right" VerticalAlignment="Center"
-
+                  Margin="16,0">
-      <!-- Title bar / drag handle -->
+        <Button Content="Open all in VS Code" Command="{Binding OpenInVsCodeCommand}"/>
-      <Border Grid.Row="0"
+        <Button Content="I've resolved — continue" Command="{Binding ContinueCommand}"/>
-              x:Name="TitleBar"
+        <Button Content="Abort this merge" Command="{Binding AbortCommand}"/>
-              Background="{StaticResource Surface2Brush}"
-              BorderBrush="{StaticResource LineBrush}"
-              BorderThickness="0,0,0,1"
-              PointerPressed="TitleBar_PointerPressed">
-        <Grid ColumnDefinitions="*,Auto" Margin="14,0">
-          <TextBlock Text="Merge conflict"
-                     VerticalAlignment="Center"
-                     FontFamily="{StaticResource MonoFamily}"
-                     FontSize="12"
-                     Foreground="{StaticResource TextDimBrush}"/>
-        </Grid>
-      </Border>
-
-      <!-- Content -->
-      <StackPanel Grid.Row="1" Spacing="12" Margin="16" MinWidth="520">
-        <TextBlock FontWeight="SemiBold" FontSize="16"
-                   Text="{Binding SubtaskTitle, StringFormat='Conflicts in subtask: {0}'}"/>
-        <TextBlock Text="{Binding TargetBranch, StringFormat='Merging into: {0}'}" Opacity="0.7"/>
-        <ItemsControl ItemsSource="{Binding ConflictedFiles}">
-          <ItemsControl.ItemTemplate>
-            <DataTemplate>
-              <TextBlock Text="{Binding}" FontFamily="Consolas,Menlo,monospace"/>
-            </DataTemplate>
-          </ItemsControl.ItemTemplate>
-        </ItemsControl>
-        <TextBlock Text="{Binding VsCodeError}" Foreground="OrangeRed"
-                   IsVisible="{Binding VsCodeError, Converter={x:Static ObjectConverters.IsNotNull}}"
-                   TextWrapping="Wrap"/>
-        <TextBlock Text="{Binding ActionError}" Foreground="OrangeRed"
-                   IsVisible="{Binding ActionError, Converter={x:Static ObjectConverters.IsNotNull}}"
-                   TextWrapping="Wrap"/>
-        <StackPanel Orientation="Horizontal" Spacing="8" HorizontalAlignment="Right" Margin="0,4,0,4">
-          <Button Content="Open all in VS Code" Command="{Binding OpenInVsCodeCommand}"/>
-          <Button Content="I've resolved — continue" Command="{Binding ContinueCommand}"/>
-          <Button Content="Abort this merge" Command="{Binding AbortCommand}"/>
-        </StackPanel>
       </StackPanel>
+    </ctl:ModalShell.Footer>
 
-    </Grid>
+    <!-- Content -->
-  </Border>
+    <StackPanel Spacing="12" Margin="16" MinWidth="520">
+      <TextBlock FontWeight="SemiBold" FontSize="{StaticResource FontSizeH3}"
+                 Text="{Binding SubtaskTitle, StringFormat='Conflicts in subtask: {0}'}"/>
+      <TextBlock Text="{Binding TargetBranch, StringFormat='Merging into: {0}'}" Opacity="0.7"/>
+      <ItemsControl ItemsSource="{Binding ConflictedFiles}">
+        <ItemsControl.ItemTemplate>
+          <DataTemplate>
+            <TextBlock Text="{Binding}" FontFamily="{DynamicResource MonoFont}"/>
+          </DataTemplate>
+        </ItemsControl.ItemTemplate>
+      </ItemsControl>
+      <TextBlock Text="{Binding VsCodeError}" Foreground="{DynamicResource BloodBrush}"
+                 IsVisible="{Binding VsCodeError, Converter={x:Static ObjectConverters.IsNotNull}}"
+                 TextWrapping="Wrap"/>
+      <TextBlock Text="{Binding ActionError}" Foreground="{DynamicResource BloodBrush}"
+                 IsVisible="{Binding ActionError, Converter={x:Static ObjectConverters.IsNotNull}}"
+                 TextWrapping="Wrap"/>
+    </StackPanel>
+
+  </ctl:ModalShell>
 </Window>

src/ClaudeDo.Ui/Views/Planning/ConflictResolutionView.axaml.cs

@@ -1,5 +1,4 @@
 using Avalonia.Controls;
-using Avalonia.Input;
 using ClaudeDo.Ui.ViewModels.Planning;
 
 namespace ClaudeDo.Ui.Views.Planning;
@@ -17,10 +16,4 @@ public partial class ConflictResolutionView : Window
         if (DataContext is ConflictResolutionViewModel vm)
             vm.CloseRequested = Close;
     }
-
-    private void TitleBar_PointerPressed(object? sender, PointerPressedEventArgs e)
-    {
-        if (e.GetCurrentPoint(this).Properties.IsLeftButtonPressed)
-            BeginMoveDrag(e);
-    }
 }