AX Agent 프리뷰 UI를 claw-code 스타일로 정리하고 프리뷰 surface를 공통화

- AX Agent 권한 승인 프리뷰에 공통 preview surface helper를 도입해 제목/요약/본문 box 구성을 일관되게 정리함
- 우측 파일 프리뷰 패널에 파일명, 경로, 형식·크기 메타 헤더를 추가하고 텍스트 프리뷰를 bordered preview box 안에 렌더하도록 개선함
- README와 DEVELOPMENT 문서에 2026-04-06 01:08 (KST) 기준 변경 이력 반영 완료
- dotnet build src/AxCopilot/AxCopilot.csproj -c Release -v minimal -p:OutputPath=bin\\verify\\ -p:IntermediateOutputPath=obj\\verify\\ 경고 0 / 오류 0 확인

src/AxCopilot/Views/AgentPreviewSurfaceFactory.cs

@@ -0,0 +1,85 @@
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Media;
+
+namespace AxCopilot.Views;
+
+internal static class AgentPreviewSurfaceFactory
+{
+    internal static Border CreateSurface(
+        string title,
+        string summary,
+        UIElement body,
+        Brush primary,
+        Brush secondary,
+        Brush itemBackground,
+        Brush borderBrush,
+        Thickness? margin = null)
+    {
+        return new Border
+        {
+            Background = itemBackground,
+            BorderBrush = borderBrush,
+            BorderThickness = new Thickness(1),
+            CornerRadius = new CornerRadius(12),
+            Padding = new Thickness(12, 10, 12, 10),
+            Margin = margin ?? new Thickness(0, 8, 0, 0),
+            Child = new StackPanel
+            {
+                Children =
+                {
+                    new TextBlock
+                    {
+                        Text = title,
+                        FontSize = 12,
+                        FontWeight = FontWeights.SemiBold,
+                        Foreground = primary,
+                    },
+                    new TextBlock
+                    {
+                        Text = summary,
+                        FontSize = 11,
+                        Foreground = secondary,
+                        Margin = new Thickness(0, 2, 0, 8),
+                        TextWrapping = TextWrapping.Wrap,
+                    },
+                    body
+                }
+            }
+        };
+    }
+
+    internal static Border CreatePreviewBox(
+        string content,
+        Brush primary,
+        Brush secondary,
+        Brush borderBrush,
+        double maxHeight,
+        bool monospace = true)
+    {
+        var panel = new Border
+        {
+            Background = Brushes.Transparent,
+            BorderBrush = new SolidColorBrush(Color.FromArgb(0x20, 0x80, 0x80, 0x80)),
+            BorderThickness = new Thickness(1),
+            CornerRadius = new CornerRadius(8),
+            Padding = new Thickness(8, 6, 8, 6),
+            Child = new ScrollViewer
+            {
+                MaxHeight = maxHeight,
+                VerticalScrollBarVisibility = ScrollBarVisibility.Auto,
+                Content = new TextBlock
+                {
+                    Text = string.IsNullOrWhiteSpace(content) ? "(empty)" : content,
+                    Foreground = primary,
+                    FontFamily = monospace ? new FontFamily("Consolas") : new FontFamily("Pretendard"),
+                    FontSize = 11.2,
+                    TextWrapping = TextWrapping.Wrap,
+                    LineHeight = 18,
+                }
+            }
+        };
+
+        return panel;
+    }
+}

src/AxCopilot/Views/ChatWindow.xaml

@@ -5240,43 +5240,88 @@
                     BorderBrush="{DynamicResource BorderColor}"
                     BorderThickness="1,0,0,0">
                 <DockPanel LastChildFill="True">
-                    <!-- 탭 바 + 도구 버튼 (DockPanel.Top — WebView2 위에 독립 레이어) -->
                     <Border DockPanel.Dock="Top" Background="{DynamicResource HintBackground}"
                             BorderBrush="{DynamicResource BorderColor}" BorderThickness="0,0,0,1"
-                            Padding="0" Panel.ZIndex="10" Focusable="True"
-                            PreviewMouseDown="PreviewTabBar_PreviewMouseDown">
-                        <Grid>
-                            <Grid.ColumnDefinitions>
-                                <ColumnDefinition Width="*"/>
-                                <ColumnDefinition Width="Auto"/>
-                            </Grid.ColumnDefinitions>
-                            <ScrollViewer Grid.Column="0" HorizontalScrollBarVisibility="Hidden"
-                                          VerticalScrollBarVisibility="Disabled" CanContentScroll="True">
-                                <StackPanel x:Name="PreviewTabPanel" Orientation="Horizontal"/>
-                            </ScrollViewer>
-                            <StackPanel Grid.Column="1" Orientation="Horizontal" Margin="4,0">
-                                <Button x:Name="BtnOpenExternal" Style="{StaticResource GhostBtn}" Padding="6"
-                                        Click="BtnOpenExternal_Click" ToolTip="외부 프로그램으로 열기" Cursor="Hand">
-                                    <TextBlock Text="&#xE8A7;" FontFamily="Segoe MDL2 Assets" FontSize="12"
-                                               Foreground="{DynamicResource SecondaryText}" IsHitTestVisible="False"/>
-                                </Button>
-                                <Button Style="{StaticResource GhostBtn}" Padding="6"
-                                        Click="BtnClosePreview_Click" ToolTip="미리보기 닫기" Cursor="Hand">
-                                    <TextBlock Text="&#xE711;" FontFamily="Segoe MDL2 Assets" FontSize="10"
-                                               Foreground="{DynamicResource SecondaryText}" IsHitTestVisible="False"/>
-                                </Button>
-                            </StackPanel>
-                        </Grid>
+                            Padding="12,10,12,8">
+                        <StackPanel>
+                            <Grid Margin="0,0,0,8">
+                                <Grid.ColumnDefinitions>
+                                    <ColumnDefinition Width="*"/>
+                                    <ColumnDefinition Width="Auto"/>
+                                </Grid.ColumnDefinitions>
+                                <StackPanel>
+                                    <TextBlock x:Name="PreviewHeaderTitle"
+                                               Text="미리보기"
+                                               FontSize="13"
+                                               FontWeight="SemiBold"
+                                               Foreground="{DynamicResource PrimaryText}"/>
+                                    <TextBlock x:Name="PreviewHeaderSubtitle"
+                                               Text="선택한 파일이 여기에 표시됩니다"
+                                               FontSize="11.5"
+                                               Margin="0,2,0,0"
+                                               Foreground="{DynamicResource SecondaryText}"
+                                               TextTrimming="CharacterEllipsis"/>
+                                </StackPanel>
+                                <StackPanel Grid.Column="1" Orientation="Horizontal" Margin="8,0,0,0">
+                                    <Button x:Name="BtnOpenExternal" Style="{StaticResource GhostBtn}" Padding="6"
+                                            Click="BtnOpenExternal_Click" ToolTip="외부 프로그램으로 열기" Cursor="Hand">
+                                        <TextBlock Text="&#xE8A7;" FontFamily="Segoe MDL2 Assets" FontSize="12"
+                                                   Foreground="{DynamicResource SecondaryText}" IsHitTestVisible="False"/>
+                                    </Button>
+                                    <Button Style="{StaticResource GhostBtn}" Padding="6"
+                                            Click="BtnClosePreview_Click" ToolTip="미리보기 닫기" Cursor="Hand">
+                                        <TextBlock Text="&#xE711;" FontFamily="Segoe MDL2 Assets" FontSize="10"
+                                                   Foreground="{DynamicResource SecondaryText}" IsHitTestVisible="False"/>
+                                    </Button>
+                                </StackPanel>
+                            </Grid>
+                            <Border Background="{DynamicResource LauncherBackground}"
+                                    BorderBrush="{DynamicResource BorderColor}" BorderThickness="1"
+                                    CornerRadius="10"
+                                    Padding="0"
+                                    Panel.ZIndex="10"
+                                    Focusable="True"
+                                    PreviewMouseDown="PreviewTabBar_PreviewMouseDown">
+                                <Grid>
+                                    <Grid.ColumnDefinitions>
+                                        <ColumnDefinition Width="*"/>
+                                        <ColumnDefinition Width="Auto"/>
+                                    </Grid.ColumnDefinitions>
+                                    <ScrollViewer Grid.Column="0" HorizontalScrollBarVisibility="Hidden"
+                                                  VerticalScrollBarVisibility="Disabled" CanContentScroll="True">
+                                        <StackPanel x:Name="PreviewTabPanel" Orientation="Horizontal"/>
+                                    </ScrollViewer>
+                                    <Border Grid.Column="1"
+                                            Margin="6,6,6,6"
+                                            Padding="8,4"
+                                            Background="{DynamicResource HintBackground}"
+                                            BorderBrush="{DynamicResource BorderColor}"
+                                            BorderThickness="1"
+                                            CornerRadius="999">
+                                        <TextBlock x:Name="PreviewHeaderMeta"
+                                                   Text="파일 메타"
+                                                   FontSize="10.5"
+                                                   Foreground="{DynamicResource SecondaryText}"/>
+                                    </Border>
+                                </Grid>
+                            </Border>
+                        </StackPanel>
                     </Border>
 
                     <!-- 미리보기 콘텐츠 영역 (DockPanel.Fill — WebView2는 여기에만 존재) -->
-                    <Grid ClipToBounds="True">
+                    <Grid ClipToBounds="True" Background="{DynamicResource LauncherBackground}">
                         <wv2:WebView2 x:Name="PreviewWebView" Visibility="Collapsed"/>
                         <ScrollViewer x:Name="PreviewTextScroll" Visibility="Collapsed"
-                                      VerticalScrollBarVisibility="Auto" Padding="12,8">
-                            <TextBlock x:Name="PreviewTextBlock" TextWrapping="Wrap"
-                                       FontFamily="Consolas" FontSize="12"
-                                       Foreground="{DynamicResource PrimaryText}"/>
+                                      VerticalScrollBarVisibility="Auto" Padding="16,14">
+                            <Border Background="{DynamicResource HintBackground}"
+                                    BorderBrush="{DynamicResource BorderColor}"
+                                    BorderThickness="1"
+                                    CornerRadius="12"
+                                    Padding="12,10">
+                                <TextBlock x:Name="PreviewTextBlock" TextWrapping="Wrap"
+                                           FontFamily="Consolas" FontSize="12"
+                                           Foreground="{DynamicResource PrimaryText}"/>
+                            </Border>
                         </ScrollViewer>
                         <DataGrid x:Name="PreviewDataGrid" Visibility="Collapsed"
                                   AutoGenerateColumns="True" IsReadOnly="True"

src/AxCopilot/Views/ChatWindow.xaml.cs

@@ -17460,6 +17460,7 @@ public partial class ChatWindow : Window
     private async void LoadPreviewContent(string filePath)
     {
         var ext = System.IO.Path.GetExtension(filePath).ToLowerInvariant();
+        SetPreviewHeader(filePath);
 
         // 모든 콘텐츠 숨기기
         PreviewWebView.Visibility = Visibility.Collapsed;
@@ -17469,6 +17470,7 @@ public partial class ChatWindow : Window
 
         if (!System.IO.File.Exists(filePath))
         {
+            SetPreviewHeaderState("파일을 찾을 수 없습니다");
             PreviewEmpty.Text = "파일을 찾을 수 없습니다";
             PreviewEmpty.Visibility = Visibility.Visible;
             return;
@@ -17510,6 +17512,7 @@ public partial class ChatWindow : Window
                     break;
 
                 default:
+                    SetPreviewHeaderState("지원되지 않는 형식");
                     PreviewEmpty.Text = "미리보기할 수 없는 파일 형식입니다";
                     PreviewEmpty.Visibility = Visibility.Visible;
                     break;
@@ -17517,11 +17520,39 @@ public partial class ChatWindow : Window
         }
         catch (Exception ex)
         {
+            SetPreviewHeaderState("미리보기 오류");
             PreviewTextBlock.Text = $"미리보기 오류: {ex.Message}";
             PreviewTextScroll.Visibility = Visibility.Visible;
         }
     }
 
+    private void SetPreviewHeader(string filePath)
+    {
+        if (PreviewHeaderTitle == null || PreviewHeaderSubtitle == null || PreviewHeaderMeta == null)
+            return;
+
+        var fileName = System.IO.Path.GetFileName(filePath);
+        var extension = System.IO.Path.GetExtension(filePath).TrimStart('.').ToUpperInvariant();
+        var fileInfo = new System.IO.FileInfo(filePath);
+        var sizeText = fileInfo.Exists
+            ? fileInfo.Length >= 1024 * 1024
+                ? $"{fileInfo.Length / 1024d / 1024d:F1} MB"
+                : $"{Math.Max(1, fileInfo.Length / 1024d):F0} KB"
+            : "파일 없음";
+
+        PreviewHeaderTitle.Text = string.IsNullOrWhiteSpace(fileName) ? "미리보기" : fileName;
+        PreviewHeaderSubtitle.Text = filePath;
+        PreviewHeaderMeta.Text = string.IsNullOrWhiteSpace(extension)
+            ? sizeText
+            : $"{extension} · {sizeText}";
+    }
+
+    private void SetPreviewHeaderState(string state)
+    {
+        if (PreviewHeaderMeta != null && !string.IsNullOrWhiteSpace(state))
+            PreviewHeaderMeta.Text = state;
+    }
+
     private bool _webViewInitialized;
     private static readonly string WebView2DataFolder =
         System.IO.Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),
@@ -17617,6 +17648,9 @@ public partial class ChatWindow : Window
     {
         _previewTabs.Clear();
         _activePreviewTab = null;
+        if (PreviewHeaderTitle != null) PreviewHeaderTitle.Text = "미리보기";
+        if (PreviewHeaderSubtitle != null) PreviewHeaderSubtitle.Text = "선택한 파일이 여기에 표시됩니다";
+        if (PreviewHeaderMeta != null) PreviewHeaderMeta.Text = "파일 메타";
         PreviewColumn.Width = new GridLength(0);
         SplitterColumn.Width = new GridLength(0);
         PreviewPanel.Visibility = Visibility.Collapsed;

src/AxCopilot/Views/PermissionRequestWindow.cs

@@ -581,48 +581,19 @@ internal sealed class PermissionRequestWindow : Window
         Brush border,
         UiExpressionProfile uiProfile)
     {
-        return new Border
-        {
-            Background = itemBg,
-            BorderBrush = border,
-            BorderThickness = new Thickness(1),
-            CornerRadius = new CornerRadius(10),
-            Padding = new Thickness(10, 8, 10, 8),
-            Margin = new Thickness(0, 8, 0, 0),
-            Child = new StackPanel
-            {
-                Children =
-                {
-                    new TextBlock
-                    {
-                        Text = title,
-                        FontSize = 11.5,
-                        FontWeight = FontWeights.SemiBold,
-                        Foreground = primary,
-                    },
-                    new TextBlock
-                    {
-                        Text = summary,
-                        FontSize = 11,
-                        Foreground = secondary,
-                        Margin = new Thickness(0, 2, 0, 6),
-                    },
-                    new TextBox
-                    {
-                        Text = content,
-                        IsReadOnly = true,
-                        BorderThickness = new Thickness(0),
-                        Background = Brushes.Transparent,
-                        Foreground = primary,
-                        FontFamily = new FontFamily("Consolas"),
-                        FontSize = 11,
-                        MaxHeight = uiProfile.PreviewMaxHeight,
-                        TextWrapping = TextWrapping.Wrap,
-                        VerticalScrollBarVisibility = ScrollBarVisibility.Auto,
-                    }
-                }
-            }
-        };
+        return AgentPreviewSurfaceFactory.CreateSurface(
+            title,
+            summary,
+            AgentPreviewSurfaceFactory.CreatePreviewBox(
+                content,
+                primary,
+                secondary,
+                border,
+                uiProfile.PreviewMaxHeight),
+            primary,
+            secondary,
+            itemBg,
+            border);
     }
 
     private static Border BuildFileEditPreviewCard(
@@ -679,41 +650,19 @@ internal sealed class PermissionRequestWindow : Window
             });
         }
 
-        return new Border
-        {
-            Background = itemBg,
-            BorderBrush = border,
-            BorderThickness = new Thickness(1),
-            CornerRadius = new CornerRadius(10),
-            Padding = new Thickness(10, 8, 10, 8),
-            Margin = new Thickness(0, 8, 0, 0),
-            Child = new StackPanel
-            {
-                Children =
-                {
-                    new TextBlock
-                    {
-                        Text = title,
-                        FontSize = 11.5,
-                        FontWeight = FontWeights.SemiBold,
-                        Foreground = primary,
-                    },
-                    new TextBlock
-                    {
-                        Text = summary,
-                        FontSize = 11,
-                        Foreground = secondary,
-                        Margin = new Thickness(0, 2, 0, 6),
-                    },
-                    new ScrollViewer
-                    {
-                        MaxHeight = uiProfile.PreviewMaxHeight,
-                        VerticalScrollBarVisibility = ScrollBarVisibility.Auto,
-                        Content = body,
-                    }
-                }
-            }
-        };
+        return AgentPreviewSurfaceFactory.CreateSurface(
+            title,
+            summary,
+            AgentPreviewSurfaceFactory.CreatePreviewBox(
+                string.Join("\n", body.Children.OfType<TextBlock>().Select(tb => tb.Text)),
+                primary,
+                secondary,
+                border,
+                uiProfile.PreviewMaxHeight),
+            primary,
+            secondary,
+            itemBg,
+            border);
     }
 
     private static Border BuildFileWriteTwoColumnPreviewCard(
@@ -764,36 +713,14 @@ internal sealed class PermissionRequestWindow : Window
         Grid.SetColumn(newPanel, 2);
         grid.Children.Add(newPanel);
 
-        return new Border
-        {
-            Background = itemBg,
-            BorderBrush = border,
-            BorderThickness = new Thickness(1),
-            CornerRadius = new CornerRadius(10),
-            Padding = new Thickness(10, 8, 10, 8),
-            Margin = new Thickness(0, 8, 0, 0),
-            Child = new StackPanel
-            {
-                Children =
-                {
-                    new TextBlock
-                    {
-                        Text = title,
-                        FontSize = 11.5,
-                        FontWeight = FontWeights.SemiBold,
-                        Foreground = primary,
-                    },
-                    new TextBlock
-                    {
-                        Text = summary,
-                        FontSize = 11,
-                        Foreground = secondary,
-                        Margin = new Thickness(0, 2, 0, 6),
-                    },
-                    grid,
-                }
-            }
-        };
+        return AgentPreviewSurfaceFactory.CreateSurface(
+            title,
+            summary,
+            grid,
+            primary,
+            secondary,
+            itemBg,
+            border);
     }
 
     private static Border BuildWriteColumn(
@@ -1161,8 +1088,8 @@ internal sealed class PermissionRequestWindow : Window
             Owner = owner,
         };
 
-        if (owner.Resources.MergedDictionaries.Count > 0)
-            dialog.Resources.MergedDictionaries.Add(owner.Resources);
+        dialog.WindowStartupLocation = WindowStartupLocation.CenterOwner;
+        dialog.Resources.MergedDictionaries.Add(owner.Resources);
 
         dialog.ShowDialog();
         return dialog._result;