런처 클립보드 이미지 미리보기 창을 추가하고 개발 문서 이력 기록 규칙을 반영\n\n- Phase L2-3로 클립보드 이미지 전용 미리보기 창 ClipboardImagePreviewWindow를 신규 추가\n- 원본 해상도 이미지 표시, Ctrl+휠 및 + / - / 0 / F / Esc 단축키 기반 줌 조작 지원\n- PNG, JPEG, BMP 저장과 클립보드 복사 기능을 미리보기 창에서 바로 수행 가능하도록 구현\n- LauncherWindow에서 # 클립보드 이미지 항목 선택 후 Shift+Enter로 미리보기 창을 여는 흐름 추가\n- 단축키 도움말에 클립보드 이미지 미리보기 동작을 반영\n- 런처 CenterOnScreen을 마우스가 위치한 모니터 기준으로 보정해 다중 디스플레이 표시 위치를 개선\n- AGENTS.md에 README.md, docs/DEVELOPMENT.md 이력 선반영 및 업데이트 날짜/시간 기록 규칙을 추가\n- README.md, docs/DEVELOPMENT.md, docs/LAUNCHER_ROADMAP.md에 v0.7.3 이력과 2026-04-04 10:05 (KST) 업데이트 시각 반영\n- dotnet build 경고 0 / 오류 0, dotnet test 436 통과 확인

src/AxCopilot/Views/ClipboardImagePreviewWindow.xaml

@@ -0,0 +1,214 @@
+<Window x:Class="AxCopilot.Views.ClipboardImagePreviewWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        Title="클립보드 이미지 미리보기"
+        Width="1080"
+        Height="760"
+        MinWidth="760"
+        MinHeight="560"
+        WindowStyle="None"
+        AllowsTransparency="True"
+        ResizeMode="CanResizeWithGrip"
+        Background="Transparent"
+        WindowStartupLocation="CenterOwner"
+        KeyDown="Window_KeyDown">
+    <Grid Margin="14">
+        <Border CornerRadius="18"
+                Background="{DynamicResource LauncherBackground}"
+                BorderBrush="{DynamicResource BorderColor}"
+                BorderThickness="1">
+            <Border.Effect>
+                <DropShadowEffect BlurRadius="24" ShadowDepth="4" Opacity="0.22" Color="Black"/>
+            </Border.Effect>
+        </Border>
+
+        <Border Background="{DynamicResource LauncherBackground}"
+                CornerRadius="18"
+                ClipToBounds="True">
+            <Grid>
+                <Grid.RowDefinitions>
+                    <RowDefinition Height="56"/>
+                    <RowDefinition Height="Auto"/>
+                    <RowDefinition Height="*"/>
+                    <RowDefinition Height="44"/>
+                </Grid.RowDefinitions>
+
+                <Border Grid.Row="0"
+                        CornerRadius="18,18,0,0"
+                        Background="{DynamicResource ItemBackground}"
+                        BorderBrush="{DynamicResource BorderColor}"
+                        BorderThickness="0,0,0,1"
+                        MouseLeftButtonDown="TitleBar_MouseLeftButtonDown">
+                    <Grid Margin="18,0,12,0">
+                        <Grid.ColumnDefinitions>
+                            <ColumnDefinition Width="*"/>
+                            <ColumnDefinition Width="Auto"/>
+                        </Grid.ColumnDefinitions>
+
+                        <StackPanel Orientation="Horizontal" VerticalAlignment="Center">
+                            <Border Background="{DynamicResource AccentColor}"
+                                    CornerRadius="8"
+                                    Padding="7,4"
+                                    Margin="0,0,10,0">
+                                <TextBlock Text="&#xE91B;"
+                                           FontFamily="Segoe MDL2 Assets"
+                                           FontSize="14"
+                                           Foreground="White"/>
+                            </Border>
+                            <StackPanel>
+                                <TextBlock x:Name="TitleText"
+                                           Text="클립보드 이미지 미리보기"
+                                           FontSize="14"
+                                           FontWeight="SemiBold"
+                                           Foreground="{DynamicResource PrimaryText}"/>
+                                <TextBlock x:Name="MetaText"
+                                           Text="원본 이미지"
+                                           Margin="0,2,0,0"
+                                           FontSize="11"
+                                           Foreground="{DynamicResource SecondaryText}"/>
+                            </StackPanel>
+                        </StackPanel>
+
+                        <StackPanel Grid.Column="1"
+                                    Orientation="Horizontal"
+                                    VerticalAlignment="Center">
+                            <Border Width="34"
+                                    Height="34"
+                                    Margin="0,0,6,0"
+                                    Background="Transparent"
+                                    CornerRadius="9"
+                                    Cursor="Hand"
+                                    MouseLeftButtonUp="BtnResetZoom_MouseLeftButtonUp">
+                                <TextBlock Text="100%"
+                                           FontSize="10.5"
+                                           FontWeight="SemiBold"
+                                           Foreground="{DynamicResource SecondaryText}"
+                                           HorizontalAlignment="Center"
+                                           VerticalAlignment="Center"/>
+                            </Border>
+                            <Border Width="34"
+                                    Height="34"
+                                    Background="Transparent"
+                                    CornerRadius="9"
+                                    Cursor="Hand"
+                                    MouseLeftButtonUp="BtnClose_MouseLeftButtonUp">
+                                <TextBlock Text="&#xE711;"
+                                           FontFamily="Segoe MDL2 Assets"
+                                           FontSize="10"
+                                           Foreground="{DynamicResource SecondaryText}"
+                                           HorizontalAlignment="Center"
+                                           VerticalAlignment="Center"/>
+                            </Border>
+                        </StackPanel>
+                    </Grid>
+                </Border>
+
+                <Border Grid.Row="1"
+                        Background="{DynamicResource ItemBackground}"
+                        BorderBrush="{DynamicResource BorderColor}"
+                        BorderThickness="0,0,0,1"
+                        Padding="16,12">
+                    <WrapPanel VerticalAlignment="Center" ItemHeight="36">
+                        <Button x:Name="BtnCopyImage"
+                                Content="클립보드 복사"
+                                Margin="0,0,8,8"
+                                Padding="12,6"
+                                MinWidth="108"
+                                Click="BtnCopyImage_Click"/>
+                        <Button x:Name="BtnSavePng"
+                                Content="PNG 저장"
+                                Margin="0,0,8,8"
+                                Padding="12,6"
+                                MinWidth="96"
+                                Click="BtnSavePng_Click"/>
+                        <Button x:Name="BtnSaveJpeg"
+                                Content="JPEG 저장"
+                                Margin="0,0,8,8"
+                                Padding="12,6"
+                                MinWidth="96"
+                                Click="BtnSaveJpeg_Click"/>
+                        <Button x:Name="BtnSaveBmp"
+                                Content="BMP 저장"
+                                Margin="0,0,8,8"
+                                Padding="12,6"
+                                MinWidth="96"
+                                Click="BtnSaveBmp_Click"/>
+                        <Button x:Name="BtnZoomIn"
+                                Content="확대"
+                                Margin="0,0,8,8"
+                                Padding="12,6"
+                                MinWidth="72"
+                                Click="BtnZoomIn_Click"/>
+                        <Button x:Name="BtnZoomOut"
+                                Content="축소"
+                                Margin="0,0,8,8"
+                                Padding="12,6"
+                                MinWidth="72"
+                                Click="BtnZoomOut_Click"/>
+                        <Button x:Name="BtnFit"
+                                Content="창에 맞춤"
+                                Margin="0,0,8,8"
+                                Padding="12,6"
+                                MinWidth="96"
+                                Click="BtnFit_Click"/>
+                    </WrapPanel>
+                </Border>
+
+                <Border Grid.Row="2"
+                        Background="{DynamicResource LauncherBackground}">
+                    <Grid Margin="14">
+                        <Border CornerRadius="16"
+                                Background="{DynamicResource ItemBackground}"
+                                BorderBrush="{DynamicResource BorderColor}"
+                                BorderThickness="1">
+                            <ScrollViewer x:Name="ImageScrollViewer"
+                                          HorizontalScrollBarVisibility="Auto"
+                                          VerticalScrollBarVisibility="Auto"
+                                          PreviewMouseWheel="ImageScrollViewer_PreviewMouseWheel"
+                                          SizeChanged="ImageScrollViewer_SizeChanged">
+                                <Grid x:Name="ImageHost"
+                                      Background="{DynamicResource LauncherBackground}"
+                                      Width="{Binding ElementName=ImageScrollViewer, Path=ViewportWidth}"
+                                      Height="{Binding ElementName=ImageScrollViewer, Path=ViewportHeight}">
+                                    <Image x:Name="PreviewImage"
+                                           Stretch="None"
+                                           HorizontalAlignment="Center"
+                                           VerticalAlignment="Center"
+                                           RenderOptions.BitmapScalingMode="HighQuality">
+                                        <Image.RenderTransform>
+                                            <ScaleTransform x:Name="ImageScaleTransform"
+                                                            ScaleX="1"
+                                                            ScaleY="1"/>
+                                        </Image.RenderTransform>
+                                    </Image>
+                                </Grid>
+                            </ScrollViewer>
+                        </Border>
+                    </Grid>
+                </Border>
+
+                <Border Grid.Row="3"
+                        Background="{DynamicResource ItemBackground}"
+                        BorderBrush="{DynamicResource BorderColor}"
+                        BorderThickness="0,1,0,0"
+                        Padding="16,0">
+                    <Grid>
+                        <Grid.ColumnDefinitions>
+                            <ColumnDefinition Width="*"/>
+                            <ColumnDefinition Width="Auto"/>
+                        </Grid.ColumnDefinitions>
+                        <TextBlock x:Name="StatusText"
+                                   VerticalAlignment="Center"
+                                   FontSize="11.5"
+                                   Foreground="{DynamicResource SecondaryText}"/>
+                        <TextBlock Grid.Column="1"
+                                   VerticalAlignment="Center"
+                                   FontSize="11"
+                                   Foreground="{DynamicResource SecondaryText}"
+                                   Text="Ctrl+휠 확대/축소 · + / - · 0 원본 · F 맞춤 · Esc 닫기"/>
+                    </Grid>
+                </Border>
+            </Grid>
+        </Border>
+    </Grid>
+</Window>

src/AxCopilot/Views/ClipboardImagePreviewWindow.xaml.cs

@@ -0,0 +1,226 @@
+using System.IO;
+using System.Windows;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using Microsoft.Win32;
+
+namespace AxCopilot.Views;
+
+/// <summary>클립보드 이미지 전용 미리보기 창. 원본 해상도 기준 줌과 저장을 지원합니다.</summary>
+public partial class ClipboardImagePreviewWindow : Window
+{
+    private const double MinZoom = 0.1;
+    private const double MaxZoom = 8.0;
+    private const double ZoomStep = 0.1;
+
+    private readonly BitmapSource _image;
+    private readonly string? _sourcePath;
+    private double _zoom = 1.0;
+    private bool _fitToViewport = true;
+
+    public ClipboardImagePreviewWindow(BitmapSource image, string? sourcePath = null)
+    {
+        _image = image ?? throw new ArgumentNullException(nameof(image));
+        _sourcePath = sourcePath;
+
+        InitializeComponent();
+
+        PreviewImage.Source = _image;
+        TitleText.Text = string.IsNullOrWhiteSpace(sourcePath)
+            ? "클립보드 이미지 미리보기"
+            : Path.GetFileName(sourcePath);
+        MetaText.Text = $"{_image.PixelWidth:N0} × {_image.PixelHeight:N0}px";
+
+        Loaded += (_, _) =>
+        {
+            ApplyFitToViewport();
+            UpdateStatusText();
+        };
+    }
+
+    private void TitleBar_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
+    {
+        if (e.ClickCount == 2)
+        {
+            WindowState = WindowState == WindowState.Maximized ? WindowState.Normal : WindowState.Maximized;
+            return;
+        }
+
+        try { DragMove(); } catch { }
+    }
+
+    private void Window_KeyDown(object sender, KeyEventArgs e)
+    {
+        switch (e.Key)
+        {
+            case Key.Escape:
+                Close();
+                e.Handled = true;
+                return;
+            case Key.Add:
+            case Key.OemPlus:
+                IncreaseZoom();
+                e.Handled = true;
+                return;
+            case Key.Subtract:
+            case Key.OemMinus:
+                DecreaseZoom();
+                e.Handled = true;
+                return;
+            case Key.D0:
+            case Key.NumPad0:
+                ResetZoom();
+                e.Handled = true;
+                return;
+            case Key.F:
+                ApplyFitToViewport();
+                e.Handled = true;
+                return;
+            case Key.C when Keyboard.Modifiers == ModifierKeys.Control:
+                CopyImageToClipboard();
+                e.Handled = true;
+                return;
+        }
+    }
+
+    private void ImageScrollViewer_PreviewMouseWheel(object sender, MouseWheelEventArgs e)
+    {
+        if ((Keyboard.Modifiers & ModifierKeys.Control) == 0)
+            return;
+
+        if (e.Delta > 0)
+            IncreaseZoom();
+        else if (e.Delta < 0)
+            DecreaseZoom();
+
+        e.Handled = true;
+    }
+
+    private void ImageScrollViewer_SizeChanged(object sender, SizeChangedEventArgs e)
+    {
+        if (_fitToViewport)
+            ApplyFitToViewport();
+    }
+
+    private void BtnClose_MouseLeftButtonUp(object sender, MouseButtonEventArgs e) => Close();
+    private void BtnResetZoom_MouseLeftButtonUp(object sender, MouseButtonEventArgs e) => ResetZoom();
+    private void BtnZoomIn_Click(object sender, RoutedEventArgs e) => IncreaseZoom();
+    private void BtnZoomOut_Click(object sender, RoutedEventArgs e) => DecreaseZoom();
+    private void BtnFit_Click(object sender, RoutedEventArgs e) => ApplyFitToViewport();
+    private void BtnCopyImage_Click(object sender, RoutedEventArgs e) => CopyImageToClipboard();
+    private void BtnSavePng_Click(object sender, RoutedEventArgs e) => SaveImage("png");
+    private void BtnSaveJpeg_Click(object sender, RoutedEventArgs e) => SaveImage("jpg");
+    private void BtnSaveBmp_Click(object sender, RoutedEventArgs e) => SaveImage("bmp");
+
+    private void IncreaseZoom() => SetZoom(_zoom + ZoomStep, false);
+    private void DecreaseZoom() => SetZoom(_zoom - ZoomStep, false);
+    private void ResetZoom() => SetZoom(1.0, false);
+
+    private void ApplyFitToViewport()
+    {
+        if (ImageScrollViewer.ViewportWidth <= 0 || ImageScrollViewer.ViewportHeight <= 0)
+            return;
+
+        var availableWidth = Math.Max(1, ImageScrollViewer.ViewportWidth - 32);
+        var availableHeight = Math.Max(1, ImageScrollViewer.ViewportHeight - 32);
+
+        var scaleX = availableWidth / _image.PixelWidth;
+        var scaleY = availableHeight / _image.PixelHeight;
+        var fitScale = Math.Min(scaleX, scaleY);
+
+        if (double.IsNaN(fitScale) || double.IsInfinity(fitScale) || fitScale <= 0)
+            fitScale = 1.0;
+
+        SetZoom(Math.Min(1.0, fitScale), true);
+    }
+
+    private void SetZoom(double zoom, bool fitToViewport)
+    {
+        _fitToViewport = fitToViewport;
+        _zoom = Math.Max(MinZoom, Math.Min(MaxZoom, zoom));
+        ImageScaleTransform.ScaleX = _zoom;
+        ImageScaleTransform.ScaleY = _zoom;
+        UpdateStatusText();
+    }
+
+    private void UpdateStatusText()
+    {
+        var mode = _fitToViewport ? "창 맞춤" : "수동 줌";
+        var source = string.IsNullOrWhiteSpace(_sourcePath) ? "원본 경로 없음" : _sourcePath;
+        StatusText.Text = $"{_image.PixelWidth:N0} × {_image.PixelHeight:N0}px · 확대 {Math.Round(_zoom * 100)}% · {mode} · {source}";
+    }
+
+    private void CopyImageToClipboard()
+    {
+        try
+        {
+            var app = Application.Current as App;
+            app?.ClipboardHistoryService?.SuppressNextCapture();
+            Clipboard.SetImage(_image);
+            CustomMessageBox.Show("이미지를 클립보드에 복사했습니다.", "AX Commander", MessageBoxButton.OK, MessageBoxImage.Information);
+        }
+        catch (Exception ex)
+        {
+            Services.LogService.Warn($"클립보드 이미지 복사 실패: {ex.Message}");
+            CustomMessageBox.Show($"이미지 복사에 실패했습니다.\n{ex.Message}", "AX Commander", MessageBoxButton.OK, MessageBoxImage.Warning);
+        }
+    }
+
+    private void SaveImage(string format)
+    {
+        try
+        {
+            var dialog = new SaveFileDialog
+            {
+                FileName = BuildDefaultFileName(format),
+                Filter = format switch
+                {
+                    "png" => "PNG 이미지|*.png",
+                    "jpg" => "JPEG 이미지|*.jpg;*.jpeg",
+                    "bmp" => "BMP 이미지|*.bmp",
+                    _ => "이미지 파일|*.*",
+                },
+                AddExtension = true,
+                OverwritePrompt = true,
+            };
+
+            if (dialog.ShowDialog(this) != true)
+                return;
+
+            BitmapEncoder encoder = format switch
+            {
+                "jpg" => new JpegBitmapEncoder { QualityLevel = 95 },
+                "bmp" => new BmpBitmapEncoder(),
+                _ => new PngBitmapEncoder(),
+            };
+
+            encoder.Frames.Add(BitmapFrame.Create(_image));
+            using var stream = new FileStream(dialog.FileName, FileMode.Create, FileAccess.Write);
+            encoder.Save(stream);
+
+            CustomMessageBox.Show($"이미지를 저장했습니다.\n{dialog.FileName}", "AX Commander", MessageBoxButton.OK, MessageBoxImage.Information);
+        }
+        catch (Exception ex)
+        {
+            Services.LogService.Warn($"클립보드 이미지 저장 실패: {ex.Message}");
+            CustomMessageBox.Show($"이미지 저장에 실패했습니다.\n{ex.Message}", "AX Commander", MessageBoxButton.OK, MessageBoxImage.Warning);
+        }
+    }
+
+    private string BuildDefaultFileName(string format)
+    {
+        var sourceName = !string.IsNullOrWhiteSpace(_sourcePath)
+            ? Path.GetFileNameWithoutExtension(_sourcePath)
+            : $"clipboard-image-{DateTime.Now:yyyyMMdd-HHmmss}";
+
+        var extension = format switch
+        {
+            "jpg" => ".jpg",
+            "bmp" => ".bmp",
+            _ => ".png",
+        };
+
+        return sourceName + extension;
+    }
+}

src/AxCopilot/Views/LauncherWindow.Keyboard.cs

@@ -0,0 +1,29 @@
+using System.Windows;
+using System.Windows.Media.Imaging;
+
+namespace AxCopilot.Views;
+
+public partial class LauncherWindow
+{
+    private bool TryOpenClipboardImagePreview()
+    {
+        if (_vm.SelectedItem?.Data is not Services.ClipboardEntry clipEntry || clipEntry.IsText)
+            return false;
+
+        var originalImage = Services.ClipboardHistoryService.LoadOriginalImage(clipEntry.OriginalImagePath);
+        BitmapSource? imageToPreview = originalImage ?? clipEntry.Image;
+        if (imageToPreview == null)
+            return false;
+
+        Hide();
+
+        var preview = new ClipboardImagePreviewWindow(imageToPreview, clipEntry.OriginalImagePath)
+        {
+            WindowStartupLocation = WindowStartupLocation.CenterScreen,
+        };
+        preview.Resources.MergedDictionaries.Add(Resources);
+        preview.Show();
+        preview.Activate();
+        return true;
+    }
+}

src/AxCopilot/Views/LauncherWindow.xaml.cs

@@ -7,6 +7,8 @@ using System.Windows.Media.Animation;
 using Microsoft.Win32;
 using AxCopilot.Models;
 using AxCopilot.ViewModels;
+using FormsCursor = System.Windows.Forms.Cursor;
+using FormsScreen = System.Windows.Forms.Screen;
 
 namespace AxCopilot.Views;
 
@@ -676,16 +678,20 @@ public partial class LauncherWindow : Window
 
     private void CenterOnScreen()
     {
-        var screen = SystemParameters.WorkArea;
+        var monitor = FormsScreen.FromPoint(FormsCursor.Position);
+        var transform = PresentationSource.FromVisual(this)?.CompositionTarget?.TransformFromDevice ?? Matrix.Identity;
+        var topLeft = transform.Transform(new Point(monitor.WorkingArea.Left, monitor.WorkingArea.Top));
+        var bottomRight = transform.Transform(new Point(monitor.WorkingArea.Right, monitor.WorkingArea.Bottom));
+        var screen = new Rect(topLeft, bottomRight);
         // ActualHeight/ActualWidth는 첫 Show() 전 레이아웃 패스 이전에 0일 수 있음 → 기본값으로 보호
         var w = ActualWidth  > 0 ? ActualWidth  : 640;
         var h = ActualHeight > 0 ? ActualHeight : 80;
-        Left = (screen.Width - w) / 2 + screen.Left;
+        Left = screen.Left + (screen.Width - w) / 2;
         Top = _vm.WindowPosition switch
         {
-            "center" => (screen.Height - h) / 2 + screen.Top,
-            "bottom" => screen.Height * 0.75 + screen.Top,
-            _        => screen.Height * 0.2 + screen.Top,  // "center-top" (기본)
+            "center" => screen.Top + (screen.Height - h) / 2,
+            "bottom" => screen.Top + screen.Height * 0.75,
+            _        => screen.Top + screen.Height * 0.2,  // "center-top" (기본)
         };
     }
 
@@ -863,6 +869,12 @@ public partial class LauncherWindow : Window
 
                 if (shift)
                 {
+                    if (TryOpenClipboardImagePreview())
+                    {
+                        e.Handled = true;
+                        break;
+                    }
+
                     // 퍼지 파일 검색 결과: Shift+Enter → 파일이 있는 폴더 열기
                     if (_vm.SelectedItem?.Data is AxCopilot.Services.IndexEntry shiftEntry)
                     {
@@ -1297,7 +1309,7 @@ public partial class LauncherWindow : Window
             "Ctrl+Shift+E   탐색기에서 열기",
             "Ctrl+Enter     관리자 실행",
             "Alt+Enter      속성 보기",
-            "Shift+Enter    대형 텍스트",
+            "Shift+Enter    대형 텍스트 / 클립보드 이미지 미리보기",
         };
 
         CustomMessageBox.Show(

src/AxCopilot/Views/ShortcutHelpWindow.xaml.cs

@@ -83,7 +83,7 @@ public partial class ShortcutHelpWindow : Window
             new ShortcutRow("Ctrl+K",           "이 단축키 참조 창 열기",                             "\uE8FD", "#4B5EFC"),
             new ShortcutRow("Ctrl+,",           "설정 창 열기",                                      "\uE713", "#4B5EFC"),
             new ShortcutRow("F5",               "파일 인덱스 즉시 재구축",                            "\uE72C", "#107C10"),
-            new ShortcutRow("Shift+Enter",      "Large Type / 병합 실행 / 캡처 모드: 지연 캡처(3/5/10초) 타이머",     "\uE8A7", "#7B68EE"),
+            new ShortcutRow("Shift+Enter",      "클립보드 이미지 미리보기 / Large Type / 병합 실행 / 캡처 모드 지연 타이머", "\uE8A7", "#7B68EE"),
         };
 
         // ── 입력 예약어 ───────────────────────────────────────────────────