AX Agent 폴더 데이터 활용 사용자 옵션 제거 및 자동 정책 고정

- 코워크/코드의 폴더 내 문서 활용을 사용자 설정에서 제거하고 탭별 자동 정책으로 고정
- ChatWindow 하단 데이터 활용 버튼과 AX Agent 내부 설정 row, 메인 설정/구형 설정창의 관련 UI 제거
- Chat/Cowork/Code 탭별 자동 데이터 활용 정책을 none/passive/active로 고정하고 저장 경로에서 사용자 선택값 반영 제거
- README와 DEVELOPMENT 문서에 변경 이력 및 적용 기준 반영
- 검증: dotnet build src/AxCopilot/AxCopilot.csproj -c Release -v minimal -p:OutputPath=bin\verify\ -p:IntermediateOutputPath=obj\verify\ (경고 0 / 오류 0)

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)