From 784167ccff3549b8b59a21e5def37c61bafaa44d Mon Sep 17 00:00:00 2001
From: Yun Chan <yunchan@twentyoz.kr>
Date: Wed, 6 May 2026 19:36:55 +0900
Subject: [PATCH] =?UTF-8?q?feat:=20P4-P8=20=ED=95=9C=EB=B0=A9=20=EB=A7=88?=
 =?UTF-8?q?=EB=AC=B4=EB=A6=AC=20=E2=80=94=20=EC=9E=90=EC=B2=B4=EC=84=9C?=
 =?UTF-8?q?=EB=AA=85=20MSIX,=20=EC=98=81=EA=B5=AC=EC=A0=80=EC=9E=A5,=20?=
 =?UTF-8?q?=EB=8B=A8=EC=B6=95=ED=82=A4,=20capability=20=EC=95=8C=EB=A6=BC?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

P4 — 자체 서명 MSIX 자동화
- packaging/BuildAndSign.ps1: 인증서 생성→PFX export→MSIX 빌드→서명을
  한 스크립트로 일관 처리. 기존 인증서 있으면 재사용.
- Install-EverythingToJpeg.ps1: 기본 비밀번호 'EverythingToJpegDev' 자동
  사용 (사용자 5대 PC 본인 사용 한정).
- 검증: 53MB 서명된 MSIX 산출, signtool 정상 통과(DigiCert TimeStamp 박힘).

P6 — Past Results 영구 저장
- HistoryStorage.cs: %LocalAppData%\EverythingToJpeg\history.jsonl 에
  변환 결과 append. 시작 시 로드해서 _pastResults에 채움.
- 첫 실행에만 데모 시드, 이후엔 실데이터만 표시.
- Past Results의 Clear All은 영구 파일도 함께 삭제 (확인 다이얼로그 추가).

P7 — 정리 + 단축키
- 사용 안 하는 ConvertWindow.xaml/.cs 폐기 (코드 600줄 제거).
- KeyBinding 4개: Ctrl+O 파일 추가, Ctrl+Enter 변환, Esc 닫기, F5 새로고침.
- RelayCommand 헬퍼 클래스로 단축키 ICommand 패턴 구현.

P8 — Capability 자동 안내
- 시작 시 RequiresExternal Provider들의 가용성 비동기 체크.
- 외부 도구 미설치 형식이 있으면 사이드바 footer에
  "⚠ N개 형식이 외부 도구를 기다립니다 (Diagnose 참조)" 한 줄 표시.

README — Phase 1~8 전체 진척, 단축키 표 정리.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
---
 README.md                                     |  20 +-
 packaging/BuildAndSign.ps1                    |  68 ++++
 packaging/Install-EverythingToJpeg.ps1        |   5 +-
 .../Views/ConvertWindow.xaml                  | 323 ---------------
 .../Views/ConvertWindow.xaml.cs               | 376 ------------------
 .../Views/MainWindow.xaml                     |  22 +-
 .../Views/MainWindow.xaml.cs                  | 103 ++++-
 src/EverythingToJpeg.Core/HistoryStorage.cs   |  68 ++++
 8 files changed, 276 insertions(+), 709 deletions(-)
 create mode 100644 packaging/BuildAndSign.ps1
 delete mode 100644 src/EverythingToJpeg.App/Views/ConvertWindow.xaml
 delete mode 100644 src/EverythingToJpeg.App/Views/ConvertWindow.xaml.cs
 create mode 100644 src/EverythingToJpeg.Core/HistoryStorage.cs

diff --git a/README.md b/README.md
index f72f957..4c9d5f0 100644
--- a/README.md
+++ b/README.md
@@ -63,9 +63,25 @@ dotnet publish src\EverythingToJpeg.App\EverythingToJpeg.App.csproj `
 
 | 단계 | 상태 | 내용 |
 |---|---|---|
-| Phase 1 | ✅ | 레지스트리 컨텍스트 메뉴 (Win11 "추가 옵션 표시"), 핵심 변환(이미지·HEIC·RAW·PDF·DOCX), Fluent UI |
-| Phase 2 | ✅ | C++ IExplorerCommand DLL, MSIX 패키징, 자체 서명 인증서, GitHub Releases 자동화 — `packaging/README.md` 참조 |
+| Phase 1 | ✅ | 레지스트리 컨텍스트 메뉴 (Win11 "추가 옵션 표시"), 핵심 변환, Fluent UI |
+| Phase 2 | ✅ | C++ IExplorerCommand DLL + MSIX Sparse Package |
 | Phase 3 | ✅ | HTML(WebView2), HWP/HWPX(LibreOffice + H2Orestart) 실구현 |
+| Phase 4 | ✅ | **자체 서명 MSIX 자동화** — `packaging/BuildAndSign.ps1` 한 방으로 인증서 생성 + 서명 + 패키지 |
+| Phase 5 | ✅ | GitHub 리모트 + Actions 릴리즈 워크플로 |
+| Phase 6 | ✅ | Past Results 영구 저장 (`%LocalAppData%\EverythingToJpeg\history.jsonl`) |
+| Phase 7 | ✅ | 단축키 (Ctrl+O 추가, Ctrl+Enter 변환, Esc 닫기, F5 새로고침), 코드 정리 |
+| Phase 8 | ✅ | 시작 시 Provider 가용성 자동 체크, 사이드바에 외부 도구 필요 안내 |
+
+## 키보드 단축키
+
+| 키 | 동작 |
+|---|---|
+| Ctrl+O | 파일 추가 |
+| Ctrl+Enter | Process Queue (변환 시작) |
+| Esc | 창 닫기 |
+| F5 | 통계 새로고침 |
+| Active Queue 행 클릭 | 우측 Preview에 즉시 표시 |
+| Past Results 행 클릭 | 원본 파일이 있으면 Preview 표시 |
 
 ## 두 가지 사용 방식
 
diff --git a/packaging/BuildAndSign.ps1 b/packaging/BuildAndSign.ps1
new file mode 100644
index 0000000..2440418
--- /dev/null
+++ b/packaging/BuildAndSign.ps1
@@ -0,0 +1,68 @@
+#Requires -Version 5.1
+# 한방에 빌드+자체서명: 인증서 자동 생성 → MSIX 빌드 → 서명까지 일관 처리.
+# 산출:
+#   - packaging/dist/EverythingToJpeg-x64.msix (서명됨)
+#   - packaging/EverythingToJpeg-DevCert.pfx (5대 PC 신뢰 등록용)
+
+[CmdletBinding()]
+param(
+    [string]$Subject = 'CN=EverythingToJpegDev',
+    [string]$Password = 'EverythingToJpegDev',
+    [string]$Configuration = 'Release',
+    [string]$Platform = 'x64'
+)
+
+$ErrorActionPreference = 'Stop'
+$packagingDir = $PSScriptRoot
+$pfxPath = Join-Path $packagingDir 'EverythingToJpeg-DevCert.pfx'
+$securePassword = ConvertTo-SecureString -String $Password -AsPlainText -Force
+
+# ---- 1) 인증서 ----
+$existing = Get-ChildItem -Path 'Cert:\CurrentUser\My' -ErrorAction SilentlyContinue |
+    Where-Object { $_.Subject -eq $Subject } |
+    Sort-Object NotAfter -Descending |
+    Select-Object -First 1
+
+if (-not $existing) {
+    Write-Host "[1/3] 자체 서명 인증서 생성: $Subject"
+    $existing = New-SelfSignedCertificate `
+        -Type CodeSigningCert `
+        -Subject $Subject `
+        -KeyAlgorithm RSA `
+        -KeyLength 3072 `
+        -Provider 'Microsoft Enhanced RSA and AES Cryptographic Provider' `
+        -KeyExportPolicy Exportable `
+        -KeyUsage DigitalSignature `
+        -CertStoreLocation 'Cert:\CurrentUser\My' `
+        -HashAlgorithm SHA256 `
+        -NotAfter (Get-Date).AddYears(5) `
+        -FriendlyName 'EverythingToJpeg Dev'
+}
+else {
+    Write-Host "[1/3] 기존 인증서 재사용 (Thumbprint $($existing.Thumbprint))"
+}
+
+if (-not (Test-Path $pfxPath)) {
+    Export-PfxCertificate -Cert $existing -FilePath $pfxPath -Password $securePassword | Out-Null
+    Write-Host "      PFX 내보냄: $pfxPath"
+}
+
+# ---- 2) MSIX 빌드 + 서명 ----
+Write-Host "[2/3] MSIX 빌드 + 서명"
+& (Join-Path $packagingDir 'BuildMsix.ps1') `
+    -Configuration $Configuration `
+    -Platform $Platform `
+    -Sign `
+    -CertThumbprint $existing.Thumbprint
+
+# ---- 3) 안내 ----
+Write-Host ''
+Write-Host '[3/3] 완료. 다음 단계:'
+Write-Host '  1. PFX 파일을 5대 PC 각각에 복사:'
+Write-Host "       $pfxPath"
+Write-Host '  2. 각 PC에서 관리자 PowerShell:'
+Write-Host '       cd packaging'
+Write-Host "       .\Install-EverythingToJpeg.ps1 -PfxPath .\EverythingToJpeg-DevCert.pfx -MsixPath .\dist\EverythingToJpeg-x64.msix"
+Write-Host '     PFX 비밀번호:' $Password
+Write-Host ''
+Write-Host '  3. 우클릭 → JPEG로 빠른 변환 / JPEG로 변환… 이 메인 메뉴에 노출됨.'
diff --git a/packaging/Install-EverythingToJpeg.ps1 b/packaging/Install-EverythingToJpeg.ps1
index 74518c8..df2e633 100644
--- a/packaging/Install-EverythingToJpeg.ps1
+++ b/packaging/Install-EverythingToJpeg.ps1
@@ -8,7 +8,8 @@
 param(
     [Parameter(Mandatory)] [string]$PfxPath,
     [Parameter(Mandatory)] [string]$MsixPath,
-    [securestring]$PfxPassword
+    [securestring]$PfxPassword,
+    [string]$Password = 'EverythingToJpegDev'
 )
 
 $ErrorActionPreference = 'Stop'
@@ -17,7 +18,7 @@ if (-not (Test-Path $PfxPath)) { throw "PFX 파일을 찾을 수 없습니다: $
 if (-not (Test-Path $MsixPath)) { throw "MSIX 파일을 찾을 수 없습니다: $MsixPath" }
 
 if (-not $PfxPassword) {
-    $PfxPassword = Read-Host -AsSecureString -Prompt 'PFX 비밀번호'
+    $PfxPassword = ConvertTo-SecureString -String $Password -AsPlainText -Force
 }
 
 Write-Host '[1/3] 인증서를 LocalMachine\TrustedPeople에 임포트…'
diff --git a/src/EverythingToJpeg.App/Views/ConvertWindow.xaml b/src/EverythingToJpeg.App/Views/ConvertWindow.xaml
deleted file mode 100644
index 8e776b4..0000000
--- a/src/EverythingToJpeg.App/Views/ConvertWindow.xaml
+++ /dev/null
@@ -1,323 +0,0 @@
-<ui:FluentWindow x:Class="EverythingToJpeg.App.Views.ConvertWindow"
-                 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-                 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-                 xmlns:ui="http://schemas.lepo.co/wpfui/2022/xaml"
-                 Title="JPEG로 변환"
-                 Width="720" Height="780"
-                 MinWidth="560" MinHeight="560"
-                 ExtendsContentIntoTitleBar="True"
-                 WindowBackdropType="None"
-                 WindowCornerPreference="Round"
-                 WindowStartupLocation="CenterOwner"
-                 AllowDrop="True"
-                 Drop="OnFilesDropped"
-                 DragOver="OnDragOver"
-                 TextOptions.TextFormattingMode="Display"
-                 UseLayoutRounding="True">
-    <Window.Resources>
-        <ResourceDictionary>
-            <ResourceDictionary.MergedDictionaries>
-                <ResourceDictionary Source="FormatShiftTheme.xaml"/>
-            </ResourceDictionary.MergedDictionaries>
-        </ResourceDictionary>
-    </Window.Resources>
-
-    <Grid Background="{StaticResource FsBgBase}">
-        <Grid.RowDefinitions>
-            <RowDefinition Height="32"/>
-            <RowDefinition Height="Auto"/>
-            <RowDefinition Height="Auto"/>
-            <RowDefinition Height="*"/>
-            <RowDefinition Height="Auto"/>
-        </Grid.RowDefinitions>
-
-        <!-- 0: TitleBar (window controls only) -->
-        <ui:TitleBar Grid.Row="0" Title=""/>
-
-        <!-- 1: 헤더 -->
-        <Grid Grid.Row="1" Margin="32,8,32,16">
-            <Grid.ColumnDefinitions>
-                <ColumnDefinition Width="*"/>
-                <ColumnDefinition Width="Auto"/>
-            </Grid.ColumnDefinitions>
-            <StackPanel>
-                <TextBlock Text="JPEG로 변환"
-                           FontFamily="{StaticResource FsFontSans}"
-                           FontSize="20" FontWeight="SemiBold"
-                           Foreground="{StaticResource FsTextPrimary}"/>
-                <TextBlock x:Name="FilesSummaryText" Margin="0,2,0,0"
-                           Style="{StaticResource FsCaptionStyle}"/>
-            </StackPanel>
-            <StackPanel Grid.Column="1" Orientation="Horizontal" VerticalAlignment="Center">
-                <Button Content="+ 추가" Margin="0,0,8,0"
-                        Style="{StaticResource FsSecondaryButtonStyle}"
-                        Click="OnAddFilesClick"/>
-                <Button Content="비우기"
-                        Style="{StaticResource FsSecondaryButtonStyle}"
-                        Click="OnClearFilesClick"/>
-            </StackPanel>
-        </Grid>
-
-        <!-- 2: 옵션 카드 -->
-        <Border Grid.Row="2" Margin="32,0,32,16"
-                Background="{StaticResource FsBgPanel}"
-                BorderBrush="{StaticResource FsBorderSubtle}"
-                BorderThickness="1" CornerRadius="8" Padding="20">
-            <StackPanel>
-                <Grid>
-                    <Grid.ColumnDefinitions>
-                        <ColumnDefinition Width="*"/>
-                        <ColumnDefinition Width="*"/>
-                        <ColumnDefinition Width="*"/>
-                    </Grid.ColumnDefinitions>
-
-                    <!-- 품질 -->
-                    <StackPanel Grid.Column="0" Margin="0,0,12,0">
-                        <Grid>
-                            <Grid.ColumnDefinitions>
-                                <ColumnDefinition Width="*"/>
-                                <ColumnDefinition Width="Auto"/>
-                            </Grid.ColumnDefinitions>
-                            <TextBlock Text="JPEG 품질" Style="{StaticResource FsLabelStyle}"/>
-                            <Border Grid.Column="1" CornerRadius="4"
-                                    Background="{StaticResource FsBgInput}"
-                                    BorderBrush="{StaticResource FsBorderSubtle}"
-                                    BorderThickness="1" Padding="6,1">
-                                <TextBlock x:Name="QualityValueText"
-                                           FontFamily="{StaticResource FsFontMono}" FontSize="11"
-                                           Foreground="{StaticResource FsAccentBlue}"
-                                           Text="92"/>
-                            </Border>
-                        </Grid>
-                        <Slider x:Name="QualitySlider" Margin="0,8,0,0"
-                                Style="{StaticResource FsSliderStyle}"
-                                Minimum="50" Maximum="100" Value="92"
-                                ValueChanged="OnQualityChanged"/>
-                    </StackPanel>
-
-                    <!-- 출력 위치 -->
-                    <StackPanel Grid.Column="1" Margin="6,0,6,0">
-                        <TextBlock Text="출력 위치" Style="{StaticResource FsLabelStyle}"/>
-                        <Border Margin="0,8,0,0"
-                                Background="{StaticResource FsBgInput}"
-                                BorderBrush="{StaticResource FsBorderSubtle}"
-                                BorderThickness="1" CornerRadius="6" Padding="2">
-                            <UniformGrid Rows="1" Columns="3">
-                                <ToggleButton x:Name="OutputSubBtn" Content="하위"
-                                              Style="{StaticResource FsSegmentStyle}"
-                                              IsChecked="True"
-                                              Click="OnOutputSegmentClick" Tag="Sub"
-                                              ToolTip="원본 폴더 안 _jpeg 하위 폴더"/>
-                                <ToggleButton x:Name="OutputSameBtn" Content="동일"
-                                              Style="{StaticResource FsSegmentStyle}"
-                                              Click="OnOutputSegmentClick" Tag="Same"
-                                              ToolTip="원본과 같은 폴더"/>
-                                <ToggleButton x:Name="OutputCustomBtn" Content="지정"
-                                              Style="{StaticResource FsSegmentStyle}"
-                                              Click="OnOutputSegmentClick" Tag="Custom"
-                                              ToolTip="사용자 지정 폴더"/>
-                            </UniformGrid>
-                        </Border>
-                    </StackPanel>
-
-                    <!-- 이름 충돌 -->
-                    <StackPanel Grid.Column="2" Margin="12,0,0,0">
-                        <TextBlock Text="이름 충돌" Style="{StaticResource FsLabelStyle}"/>
-                        <Border Margin="0,8,0,0"
-                                Background="{StaticResource FsBgInput}"
-                                BorderBrush="{StaticResource FsBorderSubtle}"
-                                BorderThickness="1" CornerRadius="6" Padding="2">
-                            <UniformGrid Rows="1" Columns="3">
-                                <ToggleButton x:Name="ConflictRenameBtn" Content="번호"
-                                              Style="{StaticResource FsSegmentStyle}"
-                                              IsChecked="True"
-                                              Click="OnConflictSegmentClick" Tag="Rename"/>
-                                <ToggleButton x:Name="ConflictReplaceBtn" Content="덮어쓰기"
-                                              Style="{StaticResource FsSegmentStyle}"
-                                              Click="OnConflictSegmentClick" Tag="Replace"/>
-                                <ToggleButton x:Name="ConflictSkipBtn" Content="건너뛰기"
-                                              Style="{StaticResource FsSegmentStyle}"
-                                              Click="OnConflictSegmentClick" Tag="Skip"/>
-                            </UniformGrid>
-                        </Border>
-                    </StackPanel>
-                </Grid>
-
-                <!-- 사용자 지정 폴더 -->
-                <Grid Margin="0,12,0,0" x:Name="CustomFolderRow" Visibility="Collapsed">
-                    <Grid.ColumnDefinitions>
-                        <ColumnDefinition Width="*"/>
-                        <ColumnDefinition Width="Auto"/>
-                    </Grid.ColumnDefinitions>
-                    <TextBox x:Name="CustomFolderTextBox"
-                             Style="{StaticResource FsPathInputStyle}"/>
-                    <Button Grid.Column="1" Margin="8,0,0,0" Width="40"
-                            Content="…" Style="{StaticResource FsSecondaryButtonStyle}"
-                            Click="OnBrowseClick"/>
-                </Grid>
-
-                <!-- 고급 옵션 -->
-                <Expander Margin="0,12,0,0" IsExpanded="False"
-                          Foreground="{StaticResource FsTextSecondary}">
-                    <Expander.Header>
-                        <TextBlock Text="고급 옵션" Style="{StaticResource FsLabelStyle}"/>
-                    </Expander.Header>
-                    <Grid Margin="0,12,0,0">
-                        <Grid.ColumnDefinitions>
-                            <ColumnDefinition Width="*"/>
-                            <ColumnDefinition Width="*"/>
-                            <ColumnDefinition Width="Auto"/>
-                        </Grid.ColumnDefinitions>
-
-                        <StackPanel Grid.Column="0" Margin="0,0,12,0">
-                            <TextBlock Text="긴 변 최대 픽셀" Style="{StaticResource FsLabelStyle}"
-                                       ToolTip="비워 두면 원본 크기 유지"/>
-                            <TextBox x:Name="MaxLongEdgeTextBox" Margin="0,8,0,0"
-                                     Style="{StaticResource FsPathInputStyle}"/>
-                        </StackPanel>
-
-                        <StackPanel Grid.Column="1" Margin="6,0,12,0">
-                            <Grid>
-                                <Grid.ColumnDefinitions>
-                                    <ColumnDefinition Width="*"/>
-                                    <ColumnDefinition Width="Auto"/>
-                                </Grid.ColumnDefinitions>
-                                <TextBlock Text="PDF 렌더 DPI" Style="{StaticResource FsLabelStyle}"/>
-                                <TextBlock Grid.Column="1"
-                                           FontFamily="{StaticResource FsFontMono}" FontSize="11"
-                                           Foreground="{StaticResource FsAccentBlue}"
-                                           Text="{Binding ElementName=DpiSlider, Path=Value, StringFormat={}{0:0}}"/>
-                            </Grid>
-                            <Slider x:Name="DpiSlider" Margin="0,8,0,0"
-                                    Style="{StaticResource FsSliderStyle}"
-                                    Minimum="72" Maximum="450" Value="200"/>
-                        </StackPanel>
-
-                        <CheckBox Grid.Column="2" x:Name="FlattenCheckBox"
-                                  Content="투명을 흰색으로"
-                                  IsChecked="True" VerticalAlignment="Bottom"
-                                  Foreground="{StaticResource FsTextSecondary}"
-                                  FontFamily="{StaticResource FsFontSans}"
-                                  FontSize="12"/>
-                    </Grid>
-                </Expander>
-            </StackPanel>
-        </Border>
-
-        <!-- 3: 파일 리스트 -->
-        <Border Grid.Row="3" Margin="32,0,32,0"
-                Background="{StaticResource FsBgPanel}"
-                BorderBrush="{StaticResource FsBorderSubtle}"
-                BorderThickness="1" CornerRadius="8">
-            <DockPanel>
-                <Border DockPanel.Dock="Top" Padding="20,14,20,10"
-                        BorderBrush="{StaticResource FsBorderSubtle}"
-                        BorderThickness="0,0,0,1">
-                    <TextBlock Text="대상 파일" Style="{StaticResource FsLabelStyle}"/>
-                </Border>
-                <ScrollViewer VerticalScrollBarVisibility="Auto" Padding="20,12,20,16">
-                    <ItemsControl x:Name="FilesList">
-                        <ItemsControl.ItemTemplate>
-                            <DataTemplate>
-                                <Border Margin="0,0,0,8" Padding="12,10" CornerRadius="6"
-                                        Background="{StaticResource FsBgSurface}"
-                                        BorderBrush="{StaticResource FsBorderSubtle}"
-                                        BorderThickness="1">
-                                    <Grid>
-                                        <Grid.ColumnDefinitions>
-                                            <ColumnDefinition Width="40"/>
-                                            <ColumnDefinition Width="*"/>
-                                            <ColumnDefinition Width="Auto"/>
-                                        </Grid.ColumnDefinitions>
-
-                                        <Border Width="32" Height="32" CornerRadius="4"
-                                                Background="{Binding FormatBrush}"
-                                                VerticalAlignment="Center">
-                                            <Grid>
-                                                <Image Source="{Binding Thumbnail}" Stretch="UniformToFill"/>
-                                                <TextBlock Text="{Binding FormatLabel}"
-                                                           Foreground="White" FontSize="9"
-                                                           FontWeight="SemiBold"
-                                                           HorizontalAlignment="Center"
-                                                           VerticalAlignment="Center"
-                                                           Visibility="{Binding ShowFormatLabel}"/>
-                                            </Grid>
-                                        </Border>
-
-                                        <StackPanel Grid.Column="1" Margin="14,0,8,0"
-                                                    VerticalAlignment="Center">
-                                            <TextBlock Text="{Binding FileName}"
-                                                       FontFamily="{StaticResource FsFontSans}"
-                                                       FontSize="13" FontWeight="Medium"
-                                                       Foreground="{StaticResource FsTextPrimary}"
-                                                       TextTrimming="CharacterEllipsis"/>
-                                            <TextBlock Text="{Binding SubText}"
-                                                       FontSize="11" Margin="0,2,0,0"
-                                                       Foreground="{StaticResource FsTextTertiary}"
-                                                       TextTrimming="CharacterEllipsis"/>
-                                            <TextBlock Text="{Binding State}" FontSize="11" Margin="0,2,0,0">
-                                                <TextBlock.Style>
-                                                    <Style TargetType="TextBlock">
-                                                        <Setter Property="Foreground"
-                                                                Value="{StaticResource FsTextTertiary}"/>
-                                                        <Style.Triggers>
-                                                            <DataTrigger Binding="{Binding IsFailed}" Value="True">
-                                                                <Setter Property="Foreground" Value="#F87171"/>
-                                                            </DataTrigger>
-                                                        </Style.Triggers>
-                                                    </Style>
-                                                </TextBlock.Style>
-                                            </TextBlock>
-                                        </StackPanel>
-
-                                        <Button Grid.Column="2"
-                                                Style="{StaticResource FsSecondaryButtonStyle}"
-                                                Background="Transparent"
-                                                BorderThickness="0"
-                                                Padding="6"
-                                                Click="OnRemoveEntry"
-                                                ToolTip="목록에서 제거">
-                                            <Path Width="14" Height="14" Stretch="Uniform"
-                                                  Stroke="{StaticResource FsTextTertiary}"
-                                                  StrokeThickness="2"
-                                                  Data="M18,6 L6,18 M6,6 L18,18"/>
-                                        </Button>
-                                    </Grid>
-                                </Border>
-                            </DataTemplate>
-                        </ItemsControl.ItemTemplate>
-                    </ItemsControl>
-                </ScrollViewer>
-            </DockPanel>
-        </Border>
-
-        <!-- 4: 액션바 -->
-        <Border Grid.Row="4" Padding="32,16,32,20" Margin="0,16,0,0"
-                BorderBrush="{StaticResource FsBorderSubtle}" BorderThickness="0,1,0,0"
-                Background="{StaticResource FsBgPanel}">
-            <Grid>
-                <Grid.ColumnDefinitions>
-                    <ColumnDefinition Width="*"/>
-                    <ColumnDefinition Width="Auto"/>
-                </Grid.ColumnDefinitions>
-                <StackPanel VerticalAlignment="Center">
-                    <ProgressBar x:Name="OverallProgress" Height="3"
-                                 Background="{StaticResource FsBgInput}"
-                                 Foreground="{StaticResource FsAccentBlue}"
-                                 Minimum="0" Maximum="1"/>
-                    <TextBlock x:Name="ProgressStatusText" Margin="0,8,0,0"
-                               Style="{StaticResource FsCaptionStyle}"
-                               TextTrimming="CharacterEllipsis"/>
-                </StackPanel>
-                <StackPanel Grid.Column="1" Orientation="Horizontal" Margin="20,0,0,0">
-                    <Button x:Name="CancelButton" Content="닫기" Click="OnCancelClick"
-                            Margin="0,0,8,0" MinWidth="80"
-                            Style="{StaticResource FsSecondaryButtonStyle}"/>
-                    <Button x:Name="ConvertButton" Content="→ 변환 시작"
-                            Click="OnConvertClick" MinWidth="120"
-                            Style="{StaticResource FsPrimaryButtonStyle}"/>
-                </StackPanel>
-            </Grid>
-        </Border>
-    </Grid>
-</ui:FluentWindow>
diff --git a/src/EverythingToJpeg.App/Views/ConvertWindow.xaml.cs b/src/EverythingToJpeg.App/Views/ConvertWindow.xaml.cs
deleted file mode 100644
index 8670321..0000000
--- a/src/EverythingToJpeg.App/Views/ConvertWindow.xaml.cs
+++ /dev/null
@@ -1,376 +0,0 @@
-using System.Collections.ObjectModel;
-using System.ComponentModel;
-using System.Globalization;
-using System.Runtime.CompilerServices;
-using System.Windows;
-using System.Windows.Controls;
-using System.Windows.Controls.Primitives;
-using System.Windows.Input;
-using System.Windows.Media;
-using System.Windows.Media.Imaging;
-using EverythingToJpeg.Core;
-using Wpf.Ui.Controls;
-
-namespace EverythingToJpeg.App.Views;
-
-public partial class ConvertWindow : FluentWindow
-{
-    private static readonly string DialogLogPath =
-        Path.Combine(Path.GetTempPath(), "EverythingToJpeg_dialog.log");
-
-    private readonly ConversionEngine _engine;
-    private readonly ObservableCollection<ConvertFileEntry> _entries = new();
-    private CancellationTokenSource? _cts;
-    private OutputLocation _outputMode = OutputLocation.SubfolderBesideSource;
-    private NameCollision _conflictRule = NameCollision.AppendNumber;
-
-    public ConvertWindow(ConversionEngine engine, IReadOnlyList<string> initialFiles)
-    {
-        _engine = engine;
-        InitializeComponent();
-        FilesList.ItemsSource = _entries;
-        AddFiles(initialFiles);
-    }
-
-    private static void DiagLog(string line)
-    {
-        try { File.AppendAllText(DialogLogPath,
-            $"[{DateTime.Now:yyyy-MM-dd HH:mm:ss.fff}] {line}{Environment.NewLine}"); }
-        catch { }
-    }
-
-    // ============== Files ==============
-
-    private void AddFiles(IEnumerable<string> paths)
-    {
-        var existing = new HashSet<string>(_entries.Select(e => e.Path), StringComparer.OrdinalIgnoreCase);
-        foreach (var p in paths)
-        {
-            if (!File.Exists(p)) continue;
-            if (existing.Contains(p)) continue;
-
-            var entry = ConvertFileEntry.From(p, _engine);
-            _entries.Add(entry);
-            _ = entry.LoadThumbnailAsync();
-        }
-        UpdateSummary();
-    }
-
-    private void UpdateSummary()
-    {
-        FilesSummaryText.Text = _entries.Count == 0
-            ? "비어 있음 — 파일을 끌어다 놓거나 추가하세요"
-            : $"{_entries.Count}개 파일";
-    }
-
-    private void OnDragOver(object sender, DragEventArgs e)
-    {
-        e.Effects = e.Data.GetDataPresent(DataFormats.FileDrop)
-            ? DragDropEffects.Copy : DragDropEffects.None;
-        e.Handled = true;
-    }
-
-    private void OnFilesDropped(object sender, DragEventArgs e)
-    {
-        if (!e.Data.GetDataPresent(DataFormats.FileDrop)) return;
-        if (e.Data.GetData(DataFormats.FileDrop) is not string[] paths) return;
-        AddFiles(ExpandPaths(paths));
-    }
-
-    private void OnAddFilesClick(object sender, RoutedEventArgs e)
-    {
-        var dlg = new Microsoft.Win32.OpenFileDialog
-        {
-            Multiselect = true,
-            Title = "추가할 파일 선택",
-            Filter = "지원 파일|*.png;*.jpg;*.jpeg;*.gif;*.bmp;*.tif;*.tiff;*.webp;*.avif;*.heic;*.heif;*.psd;*.dng;*.nef;*.cr2;*.cr3;*.arw;*.raf;*.orf;*.rw2;*.srw;*.pef;*.pdf;*.docx;*.doc;*.html;*.htm;*.hwp;*.hwpx|모든 파일|*.*",
-        };
-        if (dlg.ShowDialog(this) == true) AddFiles(dlg.FileNames);
-    }
-
-    private void OnClearFilesClick(object sender, RoutedEventArgs e)
-    {
-        _entries.Clear();
-        UpdateSummary();
-    }
-
-    private void OnRemoveEntry(object sender, RoutedEventArgs e)
-    {
-        if (sender is FrameworkElement fe && fe.DataContext is ConvertFileEntry entry)
-        {
-            _entries.Remove(entry);
-            UpdateSummary();
-        }
-    }
-
-    private void OnBrowseClick(object sender, RoutedEventArgs e)
-    {
-        var dlg = new Microsoft.Win32.OpenFolderDialog { Title = "출력 폴더 선택" };
-        if (dlg.ShowDialog(this) == true)
-            CustomFolderTextBox.Text = dlg.FolderName;
-    }
-
-    private static IEnumerable<string> ExpandPaths(IEnumerable<string> paths)
-    {
-        foreach (var p in paths)
-        {
-            if (File.Exists(p)) yield return p;
-            else if (Directory.Exists(p))
-                foreach (var f in Directory.EnumerateFiles(p, "*", SearchOption.TopDirectoryOnly))
-                    yield return f;
-        }
-    }
-
-    // ============== Segments ==============
-
-    private void OnQualityChanged(object sender, RoutedPropertyChangedEventArgs<double> e)
-    {
-        if (QualityValueText is null) return;
-        QualityValueText.Text = ((int)e.NewValue).ToString(CultureInfo.InvariantCulture);
-    }
-
-    private void OnOutputSegmentClick(object sender, RoutedEventArgs e)
-    {
-        if (sender is not ToggleButton clicked) return;
-        OutputSubBtn.IsChecked = clicked == OutputSubBtn;
-        OutputSameBtn.IsChecked = clicked == OutputSameBtn;
-        OutputCustomBtn.IsChecked = clicked == OutputCustomBtn;
-
-        _outputMode = (clicked.Tag as string) switch
-        {
-            "Same" => OutputLocation.SameFolderAsSource,
-            "Custom" => OutputLocation.Custom,
-            _ => OutputLocation.SubfolderBesideSource,
-        };
-        CustomFolderRow.Visibility = _outputMode == OutputLocation.Custom
-            ? Visibility.Visible : Visibility.Collapsed;
-    }
-
-    private void OnConflictSegmentClick(object sender, RoutedEventArgs e)
-    {
-        if (sender is not ToggleButton clicked) return;
-        ConflictRenameBtn.IsChecked = clicked == ConflictRenameBtn;
-        ConflictReplaceBtn.IsChecked = clicked == ConflictReplaceBtn;
-        ConflictSkipBtn.IsChecked = clicked == ConflictSkipBtn;
-        _conflictRule = (clicked.Tag as string) switch
-        {
-            "Skip" => NameCollision.Skip,
-            "Replace" => NameCollision.Overwrite,
-            _ => NameCollision.AppendNumber,
-        };
-    }
-
-    private ConvertOptions BuildOptions()
-    {
-        var opts = new ConvertOptions
-        {
-            Quality = (int)QualitySlider.Value,
-            PdfDpi = (int)DpiSlider.Value,
-            FlattenTransparency = FlattenCheckBox.IsChecked == true,
-            OutputLocation = _outputMode,
-            OnCollision = _conflictRule,
-        };
-        if (_outputMode == OutputLocation.Custom)
-            opts.CustomOutputDirectory = CustomFolderTextBox.Text;
-        if (int.TryParse(MaxLongEdgeTextBox.Text, out var maxEdge) && maxEdge > 0)
-            opts.MaxLongEdgePixels = maxEdge;
-        return opts;
-    }
-
-    // ============== Convert ==============
-
-    private async void OnConvertClick(object sender, RoutedEventArgs e)
-    {
-        DiagLog($"OnConvertClick: entries={_entries.Count}");
-        if (_entries.Count == 0)
-        {
-            ShowInfo("변환할 파일이 없습니다.");
-            return;
-        }
-
-        ConvertButton.IsEnabled = false;
-        CancelButton.Content = "취소";
-        ProgressStatusText.Text = "준비 중…";
-        _cts = new CancellationTokenSource();
-
-        ConvertOptions options;
-        try
-        {
-            options = BuildOptions();
-            DiagLog($"  options: Quality={options.Quality} OutputLocation={options.OutputLocation} Custom={options.CustomOutputDirectory} Collision={options.OnCollision}");
-        }
-        catch (Exception ex)
-        {
-            DiagLog("  BuildOptions threw: " + ex);
-            ProgressStatusText.Text = "옵션 처리 오류: " + ex.Message;
-            ConvertButton.IsEnabled = true;
-            CancelButton.Content = "닫기";
-            _cts = null;
-            return;
-        }
-
-        var reporter = new Progress<ConvertProgress>(p =>
-        {
-            var overall = p.Total == 0 ? 0 : (p.Index + p.FileProgress) / p.Total;
-            OverallProgress.Value = Math.Clamp(overall, 0, 1);
-            ProgressStatusText.Text = $"{Math.Min(p.Index + 1, p.Total)} / {p.Total} — {Path.GetFileName(p.CurrentPath)}";
-            UpdateEntryProgress(p);
-        });
-
-        try
-        {
-            var sources = _entries.Select(en => en.Path).ToList();
-            DiagLog($"  starting ConvertManyAsync, {sources.Count} files");
-            var results = await _engine.ConvertManyAsync(sources, options, reporter, _cts.Token);
-            DiagLog($"  finished, {results.Count} results");
-            ApplyResults(results);
-            ProgressStatusText.Text = SummarizeResults(results);
-        }
-        catch (OperationCanceledException)
-        {
-            ProgressStatusText.Text = "변환이 취소되었습니다.";
-        }
-        catch (Exception ex)
-        {
-            DiagLog("  EXCEPTION: " + ex);
-            ProgressStatusText.Text = "오류: " + ex.Message;
-            MessageBox.Show(this, "변환 중 오류:\n\n" + ex.Message + "\n\n로그: " + DialogLogPath,
-                "EverythingToJpeg", MessageBoxButton.OK, MessageBoxImage.Error);
-        }
-        finally
-        {
-            ConvertButton.IsEnabled = true;
-            CancelButton.Content = "닫기";
-            _cts = null;
-        }
-    }
-
-    private void UpdateEntryProgress(ConvertProgress p)
-    {
-        if (p.Index >= _entries.Count) return;
-        for (var i = 0; i < _entries.Count; i++)
-        {
-            if (i < p.Index) _entries[i].State = "완료";
-            else if (i == p.Index) _entries[i].State = "변환 중…";
-            else _entries[i].State = "대기";
-        }
-    }
-
-    private void ApplyResults(IReadOnlyList<ConvertResult> results)
-    {
-        foreach (var result in results)
-        {
-            var entry = _entries.FirstOrDefault(e => string.Equals(e.Path, result.SourcePath, StringComparison.OrdinalIgnoreCase));
-            if (entry is null) continue;
-            entry.State = result.Status switch
-            {
-                ConvertStatus.Success => $"성공 ({result.OutputPaths.Count}개)",
-                ConvertStatus.Skipped => "건너뜀",
-                ConvertStatus.Failed => "실패: " + result.Message,
-                _ => entry.State,
-            };
-            entry.IsFailed = result.Status == ConvertStatus.Failed;
-        }
-    }
-
-    private static string SummarizeResults(IReadOnlyList<ConvertResult> results)
-    {
-        var success = results.Count(r => r.Status == ConvertStatus.Success);
-        var skipped = results.Count(r => r.Status == ConvertStatus.Skipped);
-        var failed = results.Count(r => r.Status == ConvertStatus.Failed);
-        var outputs = results.Sum(r => r.OutputPaths.Count);
-        return $"성공 {success}개 (출력 {outputs}), 건너뜀 {skipped}, 실패 {failed}";
-    }
-
-    private void OnCancelClick(object sender, RoutedEventArgs e)
-    {
-        if (_cts is { } cts) { cts.Cancel(); return; }
-        Close();
-    }
-
-    private void ShowInfo(string message)
-        => MessageBox.Show(this, message, "EverythingToJpeg",
-            MessageBoxButton.OK, MessageBoxImage.Information);
-}
-
-public sealed class ConvertFileEntry : INotifyPropertyChanged
-{
-    private string _state = "대기";
-    private bool _isFailed;
-    private ImageSource? _thumbnail;
-
-    public required string Path { get; init; }
-    public required string FileName { get; init; }
-    public required string SubText { get; init; }
-    public required string FormatLabel { get; init; }
-    public required Brush FormatBrush { get; init; }
-
-    public string State
-    {
-        get => _state;
-        set { _state = value; Raise(nameof(State)); }
-    }
-
-    public bool IsFailed
-    {
-        get => _isFailed;
-        set { _isFailed = value; Raise(nameof(IsFailed)); }
-    }
-
-    public ImageSource? Thumbnail
-    {
-        get => _thumbnail;
-        set { _thumbnail = value; Raise(nameof(Thumbnail)); Raise(nameof(ShowFormatLabel)); }
-    }
-
-    public Visibility ShowFormatLabel => _thumbnail is null ? Visibility.Visible : Visibility.Collapsed;
-
-    public static ConvertFileEntry From(string path, ConversionEngine engine)
-    {
-        var ext = System.IO.Path.GetExtension(path).TrimStart('.').ToLowerInvariant();
-        var (label, brushKey) = FormatPalette.For(ext);
-
-        string handler;
-        if (engine.Providers.TryGetForFile(path, out var provider) && provider is not null)
-            handler = provider.Capability.DisplayName;
-        else
-            handler = "지원되지 않음";
-
-        long size = 0;
-        try { size = new FileInfo(path).Length; } catch { }
-        var sub = $".{ext}  ·  {handler}  ·  {MainWindow.HumanizeBytes(size)}";
-
-        return new ConvertFileEntry
-        {
-            Path = path,
-            FileName = System.IO.Path.GetFileName(path),
-            SubText = sub,
-            FormatLabel = label,
-            FormatBrush = (Brush)Application.Current.FindResource(brushKey),
-        };
-    }
-
-    public Task LoadThumbnailAsync() => Task.Run(() =>
-    {
-        try
-        {
-            var ext = System.IO.Path.GetExtension(Path).ToLowerInvariant();
-            if (ext is ".png" or ".jpg" or ".jpeg" or ".bmp" or ".gif")
-            {
-                var bmp = new BitmapImage();
-                bmp.BeginInit();
-                bmp.UriSource = new Uri(Path);
-                bmp.DecodePixelWidth = 80;
-                bmp.CacheOption = BitmapCacheOption.OnLoad;
-                bmp.EndInit();
-                bmp.Freeze();
-                Application.Current.Dispatcher.Invoke(() => Thumbnail = bmp);
-            }
-        }
-        catch { }
-    });
-
-    public event PropertyChangedEventHandler? PropertyChanged;
-    private void Raise([CallerMemberName] string? n = null)
-        => PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(n));
-}
diff --git a/src/EverythingToJpeg.App/Views/MainWindow.xaml b/src/EverythingToJpeg.App/Views/MainWindow.xaml
index 87b191d..ed650c5 100644
--- a/src/EverythingToJpeg.App/Views/MainWindow.xaml
+++ b/src/EverythingToJpeg.App/Views/MainWindow.xaml
@@ -23,6 +23,13 @@
         </ResourceDictionary>
     </Window.Resources>
 
+    <Window.InputBindings>
+        <KeyBinding Key="O" Modifiers="Ctrl" Command="{Binding AddFilesCommand, RelativeSource={RelativeSource AncestorType=Window}}"/>
+        <KeyBinding Key="Enter" Modifiers="Ctrl" Command="{Binding ProcessQueueCommand, RelativeSource={RelativeSource AncestorType=Window}}"/>
+        <KeyBinding Key="Escape" Command="{Binding CloseCommand, RelativeSource={RelativeSource AncestorType=Window}}"/>
+        <KeyBinding Key="F5" Command="{Binding RefreshCommand, RelativeSource={RelativeSource AncestorType=Window}}"/>
+    </Window.InputBindings>
+
     <Grid Background="{StaticResource FsBgBase}">
         <Grid.RowDefinitions>
             <RowDefinition Height="32"/>
@@ -203,11 +210,16 @@
                     <!-- Sidebar footer -->
                     <Border Grid.Row="2" BorderBrush="{StaticResource FsBorderSubtle}"
                             BorderThickness="0,1,0,0" Padding="24">
-                        <Button x:Name="ProcessQueueButton"
-                                Content="Idle — drop files to begin"
-                                Style="{StaticResource FsPrimaryButtonStyle}"
-                                IsEnabled="False"
-                                Click="OnProcessQueueClick"/>
+                        <StackPanel>
+                            <TextBlock x:Name="CapabilityStatusText" Margin="0,0,0,12"
+                                       Style="{StaticResource FsCaptionStyle}"
+                                       TextWrapping="Wrap" Visibility="Collapsed"/>
+                            <Button x:Name="ProcessQueueButton"
+                                    Content="Idle — drop files to begin"
+                                    Style="{StaticResource FsPrimaryButtonStyle}"
+                                    IsEnabled="False"
+                                    Click="OnProcessQueueClick"/>
+                        </StackPanel>
                     </Border>
                 </Grid>
             </Border>
diff --git a/src/EverythingToJpeg.App/Views/MainWindow.xaml.cs b/src/EverythingToJpeg.App/Views/MainWindow.xaml.cs
index ad1c9c7..7e88473 100644
--- a/src/EverythingToJpeg.App/Views/MainWindow.xaml.cs
+++ b/src/EverythingToJpeg.App/Views/MainWindow.xaml.cs
@@ -20,16 +20,27 @@ public partial class MainWindow : Wpf.Ui.Controls.FluentWindow
     private CancellationTokenSource? _cts;
     private NameCollision _conflictRule = NameCollision.AppendNumber;
 
+    public ICommand AddFilesCommand { get; }
+    public ICommand ProcessQueueCommand { get; }
+    public ICommand CloseCommand { get; }
+    public ICommand RefreshCommand { get; }
+
     public MainWindow() : this(null) { }
 
     public MainWindow(IReadOnlyList<string>? initialFiles)
     {
+        AddFilesCommand = new RelayCommand(_ => PickAndAddFiles());
+        ProcessQueueCommand = new RelayCommand(_ => OnProcessQueueClick(this, new RoutedEventArgs()),
+            _ => _activeQueue.Count > 0 && _cts is null);
+        CloseCommand = new RelayCommand(_ => Close());
+        RefreshCommand = new RelayCommand(_ => ApplyAppDataStats());
+
         InitializeComponent();
 
         ActiveQueueList.ItemsSource = _activeQueue;
         PastResultsList.ItemsSource = _pastResults;
 
-        SeedDemoHistory();
+        LoadHistory();
         UpdateBadges();
         UpdateProcessQueueButton();
 
@@ -45,6 +56,47 @@ public partial class MainWindow : Wpf.Ui.Controls.FluentWindow
 
         UpdateActiveQueueVisibility();
         ApplyAppDataStats();
+
+        _ = RefreshCapabilityStatusAsync();
+    }
+
+    private async Task RefreshCapabilityStatusAsync()
+    {
+        var engine = ((App)Application.Current).Engine;
+        var notReady = new List<string>();
+        foreach (var p in engine.Providers.All)
+        {
+            if (p.Capability.Status == EverythingToJpeg.Core.Providers.ProviderStatus.RequiresExternal)
+            {
+                var availability = await p.CheckAvailabilityAsync();
+                if (!availability.IsReady)
+                    notReady.Add(p.Capability.DisplayName);
+            }
+        }
+
+        if (notReady.Count == 0)
+        {
+            CapabilityStatusText.Visibility = Visibility.Collapsed;
+            return;
+        }
+
+        CapabilityStatusText.Text = $"⚠ {notReady.Count}개 형식이 외부 도구를 기다립니다 (Diagnose 참조)";
+        CapabilityStatusText.Visibility = Visibility.Visible;
+    }
+
+    private void PickAndAddFiles()
+    {
+        var dlg = new Microsoft.Win32.OpenFileDialog
+        {
+            Multiselect = true,
+            Title = "변환할 파일 추가",
+            Filter = "지원 파일|*.png;*.jpg;*.jpeg;*.gif;*.bmp;*.tif;*.tiff;*.webp;*.avif;*.heic;*.heif;*.psd;*.dng;*.nef;*.cr2;*.cr3;*.arw;*.raf;*.orf;*.rw2;*.srw;*.pef;*.pdf;*.docx;*.doc;*.html;*.htm;*.hwp;*.hwpx|모든 파일|*.*",
+        };
+        if (dlg.ShowDialog(this) == true)
+        {
+            AddToQueue(dlg.FileNames);
+            ShowTab("Active");
+        }
     }
 
     // ============== Tabs ==============
@@ -517,6 +569,12 @@ public partial class MainWindow : Wpf.Ui.Controls.FluentWindow
     // ============== History ==============
 
     private void AddToHistory(HistoryEntry entry)
+    {
+        AddToHistoryGroups(entry);
+        HistoryStorage.Append(entry);
+    }
+
+    private void AddToHistoryGroups(HistoryEntry entry)
     {
         var label = FormatDateLabel(entry.Date);
         var group = _pastResults.FirstOrDefault(g => g.DateTitle == label);
@@ -528,6 +586,21 @@ public partial class MainWindow : Wpf.Ui.Controls.FluentWindow
         group.Add(HistoryRow.From(entry));
     }
 
+    private void LoadHistory()
+    {
+        var entries = HistoryStorage.Load();
+        if (entries.Count == 0)
+        {
+            // 첫 실행: 데모 데이터로 시각적 가이드 제공
+            SeedDemoHistory();
+            return;
+        }
+
+        // 가장 오래된 것부터 추가 (Insert(0)이 누적)
+        foreach (var e in entries.OrderBy(e => e.Timestamp))
+            AddToHistoryGroups(e);
+    }
+
     private void SeedDemoHistory()
     {
         var today = FormatDateLabel(DateOnly.FromDateTime(DateTime.Today));
@@ -624,7 +697,14 @@ public partial class MainWindow : Wpf.Ui.Controls.FluentWindow
         }
         else if (TabPastBtn.IsChecked == true)
         {
+            var confirm = MessageBox.Show(this,
+                "Past Results 전체를 삭제하시겠습니까?\n영구 저장된 이력도 함께 삭제됩니다.",
+                "EverythingToJpeg",
+                MessageBoxButton.OKCancel, MessageBoxImage.Question);
+            if (confirm != MessageBoxResult.OK) return;
+
             _pastResults.Clear();
+            HistoryStorage.Clear();
         }
         UpdateBadges();
         UpdateProcessQueueButton();
@@ -789,3 +869,24 @@ internal static class FormatPalette
         _ => (ext.ToUpperInvariant(), "FsFmtOther"),
     };
 }
+
+internal sealed class RelayCommand : ICommand
+{
+    private readonly Action<object?> _execute;
+    private readonly Func<object?, bool>? _canExecute;
+
+    public RelayCommand(Action<object?> execute, Func<object?, bool>? canExecute = null)
+    {
+        _execute = execute;
+        _canExecute = canExecute;
+    }
+
+    public bool CanExecute(object? parameter) => _canExecute?.Invoke(parameter) ?? true;
+    public void Execute(object? parameter) => _execute(parameter);
+
+    public event EventHandler? CanExecuteChanged
+    {
+        add { CommandManager.RequerySuggested += value; }
+        remove { CommandManager.RequerySuggested -= value; }
+    }
+}
diff --git a/src/EverythingToJpeg.Core/HistoryStorage.cs b/src/EverythingToJpeg.Core/HistoryStorage.cs
new file mode 100644
index 0000000..2e289b2
--- /dev/null
+++ b/src/EverythingToJpeg.Core/HistoryStorage.cs
@@ -0,0 +1,68 @@
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace EverythingToJpeg.Core;
+
+public static class HistoryStorage
+{
+    private static readonly string Dir = Path.Combine(
+        Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
+        "EverythingToJpeg");
+
+    private static readonly string FilePath = Path.Combine(Dir, "history.jsonl");
+
+    private static readonly JsonSerializerOptions JsonOptions = new()
+    {
+        Converters = { new JsonStringEnumConverter() },
+        WriteIndented = false,
+    };
+
+    public static IReadOnlyList<HistoryEntry> Load()
+    {
+        if (!File.Exists(FilePath)) return Array.Empty<HistoryEntry>();
+
+        var list = new List<HistoryEntry>();
+        try
+        {
+            foreach (var line in File.ReadAllLines(FilePath))
+            {
+                if (string.IsNullOrWhiteSpace(line)) continue;
+                try
+                {
+                    var entry = JsonSerializer.Deserialize<HistoryEntry>(line, JsonOptions);
+                    if (entry is not null) list.Add(entry);
+                }
+                catch
+                {
+                    // 손상된 줄은 무시
+                }
+            }
+        }
+        catch
+        {
+            return Array.Empty<HistoryEntry>();
+        }
+        return list;
+    }
+
+    public static void Append(HistoryEntry entry)
+    {
+        try
+        {
+            Directory.CreateDirectory(Dir);
+            var json = JsonSerializer.Serialize(entry, JsonOptions);
+            File.AppendAllText(FilePath, json + Environment.NewLine);
+        }
+        catch
+        {
+            // 영구 저장 실패는 메모리 동작에 영향 없음
+        }
+    }
+
+    public static void Clear()
+    {
+        try { if (File.Exists(FilePath)) File.Delete(FilePath); } catch { }
+    }
+
+    public static string LocationHint => FilePath;
+}