diff --git a/README.md b/README.md
index 429ec5f..c300471 100644
--- a/README.md
+++ b/README.md
@@ -1117,3 +1117,6 @@ MIT License
   - AX Agent transcript 품질 향상을 위해 렌더 책임을 실제로 분리했다. [ChatWindow.InlineInteractions.cs](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/Views/ChatWindow.InlineInteractions.cs), [ChatWindow.TaskSummary.cs](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/Views/ChatWindow.TaskSummary.cs)를 추가해 `의견 요청`, `계획 승인`, `작업 요약` UI 로직을 메인 [ChatWindow.xaml.cs](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/Views/ChatWindow.xaml.cs)에서 분리했다.
   - [PermissionRequestPresentationCatalog.cs](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/Services/Agent/PermissionRequestPresentationCatalog.cs), [ToolResultPresentationCatalog.cs](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/Services/Agent/ToolResultPresentationCatalog.cs)를 추가해 권한 요청과 도구 결과를 `명령/네트워크/파일`, `성공/실패/거부/취소` 기준으로 나눠 transcript badge에 재사용하도록 정리했다.
   - [AppStateService.cs](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/Services/AppStateService.cs)에 `OperationalStatusPresentationState`와 `GetOperationalStatusPresentation(...)`을 추가해 status/runtime summary 계산을 전용 요약 모델로 한 번 더 계층화했다. [ChatWindow.xaml.cs](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/Views/ChatWindow.xaml.cs)의 상태선 갱신은 이제 이 presentation summary를 소비한다.
+- 업데이트: 2026-04-06 01:12 (KST)
+  - AX Agent 코워크/코드의 `폴더 내 문서 활용`을 사용자 옵션에서 제거했다. [ChatWindow.xaml](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/Views/ChatWindow.xaml), [SettingsWindow.xaml](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/Views/SettingsWindow.xaml), [AgentSettingsWindow.xaml](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/Views/AgentSettingsWindow.xaml) 에서 하단 버튼, 내부 설정 행, 구형 설정창 항목을 걷어냈다.
+  - 런타임은 옵션이 아닌 자동 정책으로 유지한다. [ChatWindow.xaml.cs](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/Views/ChatWindow.xaml.cs) 에서 채팅은 `none`, 코워크는 `passive`, 코드는 `active`를 자동 적용하고, 더 이상 오버레이 저장 시 `FolderDataUsage`를 사용자 선택값으로 저장하지 않는다.
diff --git a/docs/DEVELOPMENT.md b/docs/DEVELOPMENT.md
index 5e1e896..0b713fa 100644
--- a/docs/DEVELOPMENT.md
+++ b/docs/DEVELOPMENT.md
@@ -4879,3 +4879,6 @@ ow + toggle ?쒓컖 ?몄뼱濡??ㅼ떆 ?뺣젹?덈떎.
   - 권한/도구 결과 presentation catalog를 추가했다. [PermissionRequestPresentationCatalog.cs](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/Services/Agent/PermissionRequestPresentationCatalog.cs)는 `명령/네트워크/파일/일반` 권한 요청·허용 메타를, [ToolResultPresentationCatalog.cs](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/Services/Agent/ToolResultPresentationCatalog.cs)는 `success/error/reject/cancel` 기준의 도구 결과 badge 메타를 제공한다.
   - [ChatWindow.xaml.cs](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/Views/ChatWindow.xaml.cs)의 `AddAgentEventBanner(...)`는 이제 이 catalog를 사용해 권한 요청과 도구 결과 badge를 결정한다.
   - [AppStateService.cs](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/Services/AppStateService.cs)에 `OperationalStatusPresentationState`와 `GetOperationalStatusPresentation(...)`을 추가해 status line/runtime summary 계산을 presentation layer로 분리했다. `UpdateTaskSummaryIndicators()`는 presentation summary만 소비하도록 바뀌었다.
+- 업데이트: 2026-04-06 01:12 (KST)
+  - 코워크/코드의 `폴더 내 문서 활용`은 사용자 제어 옵션에서 제거하고 탭별 자동 정책으로 고정했다. [ChatWindow.xaml](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/Views/ChatWindow.xaml) 에서 하단 데이터 활용 버튼과 AX Agent 내부 설정의 관련 row를 제거했고, [SettingsWindow.xaml](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/Views/SettingsWindow.xaml), [AgentSettingsWindow.xaml](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/Views/AgentSettingsWindow.xaml) 의 대응 UI도 정리했다.
+  - [ChatWindow.xaml.cs](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot/Views/ChatWindow.xaml.cs) 는 이제 `GetAutomaticFolderDataUsage()`만 사용해 채팅=`none`, 코워크=`passive`, 코드=`active`를 적용한다. 오버레이 저장에서도 `llm.FolderDataUsage`를 더 이상 사용자 입력으로 덮어쓰지 않으며, UI 클릭/선택 변경 핸들러는 자동 정책 유지용 no-op 수준으로 축소했다.
diff --git a/src/AxCopilot/Views/AgentSettingsWindow.xaml b/src/AxCopilot/Views/AgentSettingsWindow.xaml
index 5ccc65d..9c6f1b5 100644
--- a/src/AxCopilot/Views/AgentSettingsWindow.xaml
+++ b/src/AxCopilot/Views/AgentSettingsWindow.xaml
@@ -391,7 +391,7 @@
                                   Grid.Column="1"
                                   Style="{StaticResource ToggleSwitch}"/>
                     </Grid>
-                    <Grid Margin="0,8,0,0">
+                    <Grid Margin="0,8,0,0" Visibility="Collapsed">
                         <Grid.ColumnDefinitions>
                             <ColumnDefinition Width="*"/>
                             <ColumnDefinition Width="Auto"/>
@@ -533,32 +533,6 @@
                                 Style="{StaticResource OutlineHoverBtn}"
                                 Click="BtnReasoningMode_Click"/>
                     </Grid>
-                    <Grid Margin="0,8,0,0">
-                        <Grid.ColumnDefinitions>
-                            <ColumnDefinition Width="*"/>
-                            <ColumnDefinition Width="Auto"/>
-                        </Grid.ColumnDefinitions>
-                        <StackPanel Orientation="Horizontal">
-                            <TextBlock Text="폴더 데이터 활용"
-                                       Foreground="{DynamicResource PrimaryText}"
-                                       VerticalAlignment="Center"/>
-                            <Border Width="16" Height="16" CornerRadius="8" Background="{DynamicResource ItemHoverBackground}" Margin="6,0,0,0" Cursor="Help" VerticalAlignment="Center">
-                                <TextBlock Text="?" FontSize="10" FontWeight="Bold" Foreground="{DynamicResource AccentColor}" HorizontalAlignment="Center" VerticalAlignment="Center"/>
-                                <Border.ToolTip>
-                                    <ToolTip Style="{StaticResource HelpTooltipStyle}">
-                                        <TextBlock TextWrapping="Wrap" Foreground="White" FontSize="12" LineHeight="18" MaxWidth="320">
-                                            현재 작업 폴더 파일과 문맥을 AI가 얼마나 적극적으로 참고할지 정합니다.
-                                        </TextBlock>
-                                    </ToolTip>
-                                </Border.ToolTip>
-                            </Border>
-                        </StackPanel>
-                        <Button x:Name="BtnFolderDataUsage"
-                                Grid.Column="1"
-                                MinWidth="120"
-                                Style="{StaticResource OutlineHoverBtn}"
-                                Click="BtnFolderDataUsage_Click"/>
-                    </Grid>
                     <Grid Margin="0,8,0,0">
                         <Grid.ColumnDefinitions>
                             <ColumnDefinition Width="*"/>
diff --git a/src/AxCopilot/Views/AgentSettingsWindow.xaml.cs b/src/AxCopilot/Views/AgentSettingsWindow.xaml.cs
index 5cd27a9..a28c7f2 100644
--- a/src/AxCopilot/Views/AgentSettingsWindow.xaml.cs
+++ b/src/AxCopilot/Views/AgentSettingsWindow.xaml.cs
@@ -17,7 +17,6 @@ public partial class AgentSettingsWindow : Window
     private readonly LlmSettings _llm;
     private string _permissionMode = PermissionModeCatalog.Deny;
     private string _reasoningMode = "detailed";
-    private string _folderDataUsage = "active";
     private string _operationMode = OperationModePolicy.InternalMode;
     private string _displayMode = "rich";
     private string _defaultOutputFormat = "auto";
@@ -48,7 +47,6 @@ public partial class AgentSettingsWindow : Window
         ModelInput.Text = _selectedModel;
         _permissionMode = PermissionModeCatalog.NormalizeGlobalMode(_llm.FilePermission);
         _reasoningMode = string.IsNullOrWhiteSpace(_llm.AgentDecisionLevel) ? "detailed" : _llm.AgentDecisionLevel;
-        _folderDataUsage = string.IsNullOrWhiteSpace(_llm.FolderDataUsage) ? "active" : _llm.FolderDataUsage;
         _operationMode = OperationModePolicy.Normalize(_settings.Settings.OperationMode);
         _displayMode = "rich";
         _defaultOutputFormat = string.IsNullOrWhiteSpace(_llm.DefaultOutputFormat) ? "auto" : _llm.DefaultOutputFormat;
@@ -114,7 +112,6 @@ public partial class AgentSettingsWindow : Window
         BtnOperationMode.Content = BuildOperationModeLabel(_operationMode);
         BtnPermissionMode.Content = PermissionModeCatalog.ToDisplayLabel(_permissionMode);
         BtnReasoningMode.Content = BuildReasoningModeLabel(_reasoningMode);
-        BtnFolderDataUsage.Content = BuildFolderDataUsageLabel(_folderDataUsage);
     }
 
     private void RefreshDisplayModeCards()
@@ -173,16 +170,6 @@ public partial class AgentSettingsWindow : Window
         };
     }
 
-    private static string BuildFolderDataUsageLabel(string mode)
-    {
-        return (mode ?? "none").ToLowerInvariant() switch
-        {
-            "active" => "적극 활용",
-            "passive" => "소극 활용",
-            _ => "활용하지 않음",
-        };
-    }
-
     private static string BuildOutputFormatLabel(string format)
     {
         return (format ?? "auto").ToLowerInvariant() switch
@@ -469,17 +456,6 @@ public partial class AgentSettingsWindow : Window
         RefreshModeLabels();
     }
 
-    private void BtnFolderDataUsage_Click(object sender, RoutedEventArgs e)
-    {
-        _folderDataUsage = _folderDataUsage switch
-        {
-            "none" => "passive",
-            "passive" => "active",
-            _ => "none",
-        };
-        RefreshModeLabels();
-    }
-
     private void BtnDefaultOutputFormat_Click(object sender, RoutedEventArgs e)
     {
         _defaultOutputFormat = (_defaultOutputFormat ?? "auto").ToLowerInvariant() switch
@@ -514,7 +490,6 @@ public partial class AgentSettingsWindow : Window
         _llm.FilePermission = _permissionMode;
         _llm.DefaultAgentPermission = _permissionMode;
         _llm.AgentDecisionLevel = _reasoningMode;
-        _llm.FolderDataUsage = _folderDataUsage;
         _llm.AgentUiExpressionLevel = "rich";
         _llm.DefaultOutputFormat = _defaultOutputFormat;
         _llm.DefaultMood = _defaultMood;
diff --git a/src/AxCopilot/Views/ChatWindow.xaml b/src/AxCopilot/Views/ChatWindow.xaml
index ae46977..21ce509 100644
--- a/src/AxCopilot/Views/ChatWindow.xaml
+++ b/src/AxCopilot/Views/ChatWindow.xaml
@@ -1360,22 +1360,6 @@
                     </Border>
                 </Popup>
 
-                <!-- ── 데이터 활용 수준 팝업 ── -->
-                <Popup x:Name="DataUsagePopup" Grid.Row="4"
-                       PlacementTarget="{Binding ElementName=BtnDataUsage}"
-                       Placement="Top" StaysOpen="False"
-                       AllowsTransparency="True" PopupAnimation="Fade">
-                    <Border Background="{DynamicResource LauncherBackground}"
-                            BorderBrush="{DynamicResource BorderColor}"
-                            BorderThickness="1" CornerRadius="18"
-                            Padding="10" MinWidth="300">
-                        <Border.Effect>
-                            <DropShadowEffect BlurRadius="22" ShadowDepth="0" Opacity="0.15"/>
-                        </Border.Effect>
-                        <StackPanel x:Name="DataUsageItems" Margin="2"/>
-                    </Border>
-                </Popup>
-
                 <!-- ── 슬래시 명령어 팝업 ── -->
                 <Popup x:Name="SlashPopup" Grid.Row="4"
                        PlacementTarget="{Binding ElementName=InputBorder}"
@@ -2198,28 +2182,7 @@
                                 <Border x:Name="FormatMoodSeparator" Grid.Column="4" Width="1" Height="18" Margin="4,0"
                                         Background="{DynamicResource SeparatorColor}" Visibility="Collapsed"/>
 
-                                <!-- 데이터 활용 메뉴 -->
-                                <Border x:Name="BtnDataUsage" Grid.Column="5" Cursor="Hand"
-                                        Background="Transparent"
-                                        BorderBrush="Transparent"
-                                        BorderThickness="0"
-                                        Padding="10,5"
-                                        CornerRadius="8"
-                                        MouseLeftButtonUp="BtnDataUsage_Click"
-                                        ToolTip="폴더 데이터 활용 수준">
-                                    <StackPanel Orientation="Horizontal">
-                                        <TextBlock x:Name="DataUsageIcon" Text="&#xE9F5;" FontFamily="Segoe MDL2 Assets" FontSize="12"
-                                                   Foreground="{DynamicResource SecondaryText}"
-                                                   VerticalAlignment="Center" Margin="0,0,4,0"/>
-                                        <TextBlock x:Name="DataUsageLabel" Text="활용하지 않음" FontSize="12"
-                                                   Foreground="{DynamicResource SecondaryText}"
-                                                   VerticalAlignment="Center"/>
-                                    </StackPanel>
-                                </Border>
-
-                                <!-- 구분선 -->
-                                <Border Grid.Column="6" Width="1" Height="18" Margin="4,0"
-                                        Background="{DynamicResource SeparatorColor}"/>
+                                <!-- 폴더 데이터 활용은 코드/코워크 자동 정책으로만 동작 -->
 
                                 <!-- 권한 메뉴 -->
                                 <Button x:Name="BtnPermission" Grid.Column="7" Style="{StaticResource OutlineHoverBtn}"
@@ -3493,43 +3456,6 @@
                                                     <ComboBoxItem Content="모드 · 사외 모드" Tag="external"/>
                                                 </ComboBox>
                                             </Grid>
-                                            <Grid x:Name="OverlayFolderDataUsageRow" Margin="0,8,0,0">
-                                                <Grid.ColumnDefinitions>
-                                                    <ColumnDefinition Width="*"/>
-                                                    <ColumnDefinition Width="Auto"/>
-                                                </Grid.ColumnDefinitions>
-                                                <StackPanel Orientation="Horizontal" VerticalAlignment="Center">
-                                                    <TextBlock Text="폴더 데이터 활용"
-                                                               Foreground="{DynamicResource PrimaryText}"
-                                                               VerticalAlignment="Center"/>
-                                                    <Border Style="{StaticResource OverlayHelpBadge}">
-                                                        <TextBlock Text="?"
-                                                                   FontSize="10"
-                                                                   FontWeight="Bold"
-                                                                   Foreground="{DynamicResource AccentColor}"
-                                                                   HorizontalAlignment="Center"
-                                                                   VerticalAlignment="Center"/>
-                                                        <Border.ToolTip>
-                                                            <ToolTip Style="{StaticResource HelpTooltipStyle}">
-                                                                <TextBlock TextWrapping="Wrap"
-                                                                           Foreground="White"
-                                                                           FontSize="12"
-                                                                           LineHeight="18"
-                                                                           MaxWidth="280">현재 폴더의 파일과 문맥을 응답에 얼마나 적극적으로 활용할지 정합니다. 적극 활용은 관련 파일을 더 넓게 참조하고, 활용하지 않음은 현재 입력 중심으로만 답합니다.</TextBlock>
-                                                            </ToolTip>
-                                                        </Border.ToolTip>
-                                                    </Border>
-                                                </StackPanel>
-                                                <ComboBox x:Name="CmbOverlayFolderDataUsage"
-                                                          Grid.Column="1"
-                                                          MinWidth="140"
-                                                          Style="{StaticResource OverlayComboBox}"
-                                                          SelectionChanged="CmbOverlayFolderDataUsage_SelectionChanged">
-                                                    <ComboBoxItem Content="데이터 · 활용하지 않음" Tag="none"/>
-                                                    <ComboBoxItem Content="데이터 · 소극 활용" Tag="passive"/>
-                                                    <ComboBoxItem Content="데이터 · 적극 활용" Tag="active"/>
-                                                </ComboBox>
-                                            </Grid>
 
                                             <Grid x:Name="OverlayTlsRow" Visibility="Collapsed" Margin="0,0,0,0">
                                                 <CheckBox x:Name="OverlayHiddenTlsToggle" Visibility="Collapsed"/>
diff --git a/src/AxCopilot/Views/ChatWindow.xaml.cs b/src/AxCopilot/Views/ChatWindow.xaml.cs
index 277b269..5a4a4ce 100644
--- a/src/AxCopilot/Views/ChatWindow.xaml.cs
+++ b/src/AxCopilot/Views/ChatWindow.xaml.cs
@@ -206,7 +206,7 @@ public partial class ChatWindow : Window
 
         // 설정에서 초기값 로드 (Loaded 전에도 null 방지)
         _selectedMood = settings.Settings.Llm.DefaultMood ?? "modern";
-        _folderDataUsage = settings.Settings.Llm.FolderDataUsage ?? "none";
+        _folderDataUsage = "none";
 
         _cursorTimer = new DispatcherTimer { Interval = TimeSpan.FromMilliseconds(530) };
         _cursorTimer.Tick += CursorTimer_Tick;
@@ -295,7 +295,7 @@ public partial class ChatWindow : Window
             // ── 즉시 필요한 UI 초기화만 동기 실행 ──
             SetupUserInfo();
             _selectedMood = _settings.Settings.Llm.DefaultMood ?? "modern";
-            _folderDataUsage = _settings.Settings.Llm.FolderDataUsage ?? "none";
+            _folderDataUsage = GetAutomaticFolderDataUsage();
             UpdateAnalyzerButtonVisibility();
             UpdateModelLabel();
             RefreshInlineSettingsPanel();
@@ -1815,9 +1815,7 @@ public partial class ChatWindow : Window
             : fallbackPermission;
         _settings.Settings.Llm.FilePermission = conversationPermission;
 
-        _folderDataUsage = IsFolderDataAlwaysEnabledTab()
-            ? "active"
-            : (conv?.DataUsage ?? llm.FolderDataUsage ?? "none");
+        _folderDataUsage = GetAutomaticFolderDataUsage();
         _selectedMood = conv?.Mood ?? llm.DefaultMood ?? "modern";
     }
 
@@ -1853,7 +1851,7 @@ public partial class ChatWindow : Window
         try
         {
             var normalizedPermission = PermissionModeCatalog.NormalizeGlobalMode(_settings.Settings.Llm.FilePermission);
-            var dataUsage = IsFolderDataAlwaysEnabledTab() ? "active" : (_folderDataUsage ?? "none");
+            var dataUsage = GetAutomaticFolderDataUsage();
             var mood = _selectedMood ?? (_settings.Settings.Llm.DefaultMood ?? "modern");
             var outputFormat = conv.OutputFormat ?? "auto";
 
@@ -2259,114 +2257,21 @@ public partial class ChatWindow : Window
 
     private void BtnDataUsage_Click(object sender, System.Windows.Input.MouseButtonEventArgs e)
     {
-        if (IsFolderDataAlwaysEnabledTab())
-            return;
-        if (DataUsagePopup == null) return;
-        DataUsageItems.Children.Clear();
-
-        var options = new (string Key, string Sym, string Label, string Desc, string Color, string CheckColor)[]
-        {
-            ("none",    "\uE8D8", "활용하지 않음", "폴더 내 문서를 읽기만 포함해 참조하지 않습니다", "#6B7280", "#6B7280"),
-            ("passive", "\uE8FD", "소극 활용", "사용자가 요청할 때만 폴더 데이터를 참조합니다", "#D97706", "#D97706"),
-            ("active",  "\uE9F5", "적극 활용", "폴더 내 문서를 자동 탐색하여 보고서 작성에 적극 활용합니다", "#107C10", "#107C10"),
-        };
-
-        foreach (var (key, sym, label, desc, color, checkColor) in options)
-        {
-            var isActive = key.Equals(_folderDataUsage, StringComparison.OrdinalIgnoreCase);
-            var row = new Border
-            {
-                Background = isActive ? BrushFromHex("#F8FAFC") : Brushes.Transparent,
-                BorderBrush = isActive ? BrushFromHex("#C7D2FE") : BrushFromHex("#E5E7EB"),
-                BorderThickness = new Thickness(isActive ? 2 : 0, 0, 0, 1),
-                Cursor = Cursors.Hand,
-                Padding = new Thickness(8, 9, 8, 9),
-                Margin = new Thickness(0),
-            };
-            var sp = new StackPanel { Orientation = Orientation.Horizontal };
-            var checkIcon = CreateCheckIcon(isActive);
-            if (checkIcon is TextBlock checkText)
-                checkText.Foreground = isActive ? BrushFromHex(checkColor) : Brushes.Transparent;
-            sp.Children.Add(checkIcon);
-            sp.Children.Add(new TextBlock
-            {
-                Text = sym, FontFamily = new FontFamily("Segoe MDL2 Assets"), FontSize = 14,
-                Foreground = BrushFromHex(color),
-                VerticalAlignment = VerticalAlignment.Center, Margin = new Thickness(0, 0, 10, 0),
-            });
-            var textStack = new StackPanel();
-            textStack.Children.Add(new TextBlock
-            {
-                Text = label, FontSize = 11.5, FontWeight = FontWeights.SemiBold,
-                Foreground = BrushFromHex(color),
-            });
-            textStack.Children.Add(new TextBlock
-            {
-                Text = desc, FontSize = 10.5,
-                Foreground = TryFindResource("SecondaryText") as Brush ?? Brushes.Gray,
-                TextWrapping = TextWrapping.Wrap,
-                MaxWidth = 240,
-            });
-            sp.Children.Add(textStack);
-            row.Child = sp;
-
-            var capturedKey = key;
-            row.MouseEnter += (_, _) =>
-            {
-                row.Background = BrushFromHex("#F8FAFC");
-                row.BorderBrush = isActive ? BrushFromHex("#C7D2FE") : BrushFromHex("#E2E8F0");
-            };
-            row.MouseLeave += (_, _) =>
-            {
-                row.Background = isActive ? BrushFromHex("#F8FAFC") : Brushes.Transparent;
-                row.BorderBrush = isActive ? BrushFromHex("#C7D2FE") : BrushFromHex("#E5E7EB");
-            };
-            row.MouseLeftButtonDown += (_, _) =>
-            {
-                _folderDataUsage = capturedKey;
-                UpdateDataUsageUI();
-                SaveConversationSettings();
-                RefreshOverlayModeButtons();
-                DataUsagePopup.IsOpen = false;
-            };
-            DataUsageItems.Children.Add(row);
-        }
-        DataUsagePopup.IsOpen = true;
+        _folderDataUsage = GetAutomaticFolderDataUsage();
     }
 
     private void UpdateDataUsageUI()
     {
-        if (DataUsageLabel == null || DataUsageIcon == null) return;
-        if (IsFolderDataAlwaysEnabledTab())
-            _folderDataUsage = "active";
-        var (label, icon, color) = _folderDataUsage switch
-        {
-            "none"    => ("데이터 미활용", "\uE8D8", "#6B7280"),
-            "passive" => ("데이터 소극", "\uE8FD", "#D97706"),
-            _         => ("데이터 적극", "\uE9F5", "#107C10"),
-        };
-        DataUsageLabel.Text = label;
-        DataUsageIcon.Text = icon;
-        DataUsageIcon.Foreground = BrushFromHex(color);
-        if (BtnDataUsage != null)
-        {
-            BtnDataUsage.Visibility = IsFolderDataAlwaysEnabledTab() ? Visibility.Collapsed : Visibility.Visible;
-            BtnDataUsage.Background = Brushes.Transparent;
-            BtnDataUsage.BorderBrush = Brushes.Transparent;
-            BtnDataUsage.BorderThickness = new Thickness(0);
-            BtnDataUsage.ToolTip = _folderDataUsage switch
-            {
-                "none" => "폴더 문서와 파일을 읽지 않거나 참조하지 않습니다.",
-                "passive" => "사용자가 요청할 때만 폴더 데이터를 참조합니다.",
-                _ => "폴더 문서와 파일을 자동 탐색해 작업에 적극 활용합니다."
-            };
-        }
-        if (IsFolderDataAlwaysEnabledTab() && DataUsagePopup != null)
-            DataUsagePopup.IsOpen = false;
+        _folderDataUsage = GetAutomaticFolderDataUsage();
     }
 
-    private bool IsFolderDataAlwaysEnabledTab()
-        => string.Equals(_activeTab, "Code", StringComparison.OrdinalIgnoreCase);
+    private string GetAutomaticFolderDataUsage()
+        => _activeTab switch
+        {
+            "Code" => "active",
+            "Cowork" => "passive",
+            _ => "none",
+        };
 
     /// <summary>Cowork/Code 탭 진입 시 설정의 기본 권한을 적용.</summary>
     private void ApplyTabDefaultPermission()
@@ -8652,8 +8557,8 @@ public partial class ChatWindow : Window
         sb.AppendLine($"File permission mode: {llm.FilePermission}");
         sb.Append(BuildSubAgentDelegationSection(false));
 
-        // 폴더 데이터 활용 지침
-        switch (_folderDataUsage)
+        // 폴더 데이터 활용 지침 (사용자 옵션이 아닌 탭별 자동 정책)
+        switch (GetAutomaticFolderDataUsage())
         {
             case "active":
                 sb.AppendLine("IMPORTANT: Folder Data Usage = ACTIVE. You have 'document_read' and 'folder_map' tools available.");
@@ -13964,7 +13869,6 @@ public partial class ChatWindow : Window
         llm.WorkflowVisualizer = ChkOverlayWorkflowVisualizer?.IsChecked == true;
         llm.ShowTotalCallStats = ChkOverlayShowTotalCallStats?.IsChecked == true;
         llm.EnableAuditLog = ChkOverlayEnableAuditLog?.IsChecked == true;
-        llm.FolderDataUsage = _folderDataUsage;
 
         CommitOverlayEndpointInput(normalizeOnInvalid: true);
         CommitOverlayApiKeyInput();
@@ -14884,12 +14788,6 @@ public partial class ChatWindow : Window
             OverlayModelEditorPanel.Visibility = showBasic ? Visibility.Visible : Visibility.Collapsed;
         if (OverlayAnchorPermission != null)
             OverlayAnchorPermission.Visibility = showBasic ? Visibility.Visible : Visibility.Collapsed;
-        if (IsFolderDataAlwaysEnabledTab())
-            _folderDataUsage = "active";
-        if (OverlayFolderDataUsageRow != null)
-            OverlayFolderDataUsageRow.Visibility = IsFolderDataAlwaysEnabledTab()
-                ? Visibility.Collapsed
-                : (showShared || showCowork ? Visibility.Visible : Visibility.Collapsed);
         if (OverlayTlsRow != null)
             OverlayTlsRow.Visibility = showChat ? Visibility.Visible : Visibility.Collapsed;
         if (OverlayAnchorAdvanced != null)
@@ -16257,7 +16155,6 @@ public partial class ChatWindow : Window
     {
         var llm = _settings.Settings.Llm;
         SelectComboTag(CmbOverlayOperationMode, OperationModePolicy.Normalize(_settings.Settings.OperationMode));
-        SelectComboTag(CmbOverlayFolderDataUsage, _folderDataUsage);
         SelectComboTag(CmbOverlayPermission, PermissionModeCatalog.NormalizeGlobalMode(llm.FilePermission));
         SelectComboTag(CmbOverlayReasoning, llm.AgentDecisionLevel);
         SelectComboTag(CmbOverlayFastMode, llm.FreeTierMode ? "on" : "off");
@@ -16713,19 +16610,7 @@ public partial class ChatWindow : Window
 
     private void BtnOverlayFolderDataUsage_Click(object sender, RoutedEventArgs e)
     {
-        if (IsFolderDataAlwaysEnabledTab())
-        {
-            _folderDataUsage = "active";
-            PersistOverlaySettingsState(refreshOverlayDeferredInputs: false);
-            return;
-        }
-        _folderDataUsage = _folderDataUsage switch
-        {
-            "none" => "passive",
-            "passive" => "active",
-            _ => "none",
-        };
-        PersistOverlaySettingsState(refreshOverlayDeferredInputs: false);
+        _folderDataUsage = GetAutomaticFolderDataUsage();
     }
 
     private void CmbOverlayFastMode_SelectionChanged(object sender, SelectionChangedEventArgs e)
@@ -16800,11 +16685,7 @@ public partial class ChatWindow : Window
 
     private void CmbOverlayFolderDataUsage_SelectionChanged(object sender, SelectionChangedEventArgs e)
     {
-        if (_isOverlaySettingsSyncing || CmbOverlayFolderDataUsage.SelectedItem is not ComboBoxItem selected || selected.Tag is not string tag)
-            return;
-
-        _folderDataUsage = IsFolderDataAlwaysEnabledTab() ? "active" : tag;
-        PersistOverlaySettingsState(refreshOverlayDeferredInputs: false);
+        _folderDataUsage = GetAutomaticFolderDataUsage();
     }
 
     private void CmbOverlayAgentLogLevel_SelectionChanged(object sender, SelectionChangedEventArgs e)
diff --git a/src/AxCopilot/Views/SettingsWindow.xaml b/src/AxCopilot/Views/SettingsWindow.xaml
index be061cc..6a61a87 100644
--- a/src/AxCopilot/Views/SettingsWindow.xaml
+++ b/src/AxCopilot/Views/SettingsWindow.xaml
@@ -4957,22 +4957,6 @@
                                 </Grid>
                             </Border>
 
-                            <TextBlock Style="{StaticResource SectionHeader}" Text="폴더 데이터 활용"/>
-                            <Border Style="{StaticResource SettingsRow}">
-                                <Grid>
-                                    <StackPanel HorizontalAlignment="Left">
-                                        <TextBlock Style="{StaticResource RowLabel}" Text="기본 데이터 활용 수준"/>
-                                        <TextBlock Style="{StaticResource RowHint}" Text="작업 폴더 내 문서/데이터를 보고서 작성에 활용하는 수준입니다."/>
-                                    </StackPanel>
-                                    <ComboBox HorizontalAlignment="Right" VerticalAlignment="Center"
-                                              Width="180" SelectedValue="{Binding FolderDataUsage, Mode=TwoWay}"
-                                              SelectedValuePath="Tag">
-                                        <ComboBoxItem Content="활용하지 않음" Tag="none"/>
-                                        <ComboBoxItem Content="소극 활용 (요청 시)" Tag="passive"/>
-                                        <ComboBoxItem Content="적극 활용 (자동 탐색)" Tag="active"/>
-                                    </ComboBox>
-                                </Grid>
-                            </Border>
 
                             <!-- ── 품질 검증 ── -->
                             <TextBlock Style="{StaticResource SectionHeader}" Text="품질 검증"/>