AX Agent 내부 설정 탭 분리와 테마 복구

- AX Agent 내부 설정에서 스킬/차단 탭을 도구, 스킬, 차단으로 분리하고 각 패널을 기능별로 재배치

- 공통 탭에 테마 스타일과 테마 모드를 실제 선택 카드 UI로 복구하고 기존 숨김 플레이스홀더를 제거

- 메인 설정 좌측의 AX Agent 이동 항목을 맨 아래로 재배치하고 README 및 DEVELOPMENT 문서 이력을 2026-04-05 15:06 (KST) 기준으로 갱신

- 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/SettingsWindow.xaml.cs

@@ -34,6 +34,14 @@ public partial class SettingsWindow : Window
         _revertCallback = revertCallback;
         DataContext = vm;
 
+        if (MainSettingsTab != null && AgentTabItem != null && MainSettingsTab.Items.Contains(AgentTabItem))
+            MainSettingsTab.Items.Remove(AgentTabItem);
+        if (MainSettingsTab != null && AgentShortcutTabItem != null && MainSettingsTab.Items.Contains(AgentShortcutTabItem))
+        {
+            MainSettingsTab.Items.Remove(AgentShortcutTabItem);
+            MainSettingsTab.Items.Add(AgentShortcutTabItem);
+        }
+
         vm.ThemePreviewRequested += (_, _) => _previewCallback(vm.SelectedThemeKey);
         vm.SaveCompleted += (_, _) =>
         {
@@ -60,8 +68,11 @@ public partial class SettingsWindow : Window
             BuildQuoteCategoryCheckboxes();
             BuildDockBarSettings();
             BuildTextActionCommandsPanel();
-            MoveBlockSectionToEtc();
-            BuildServiceModelPanels();
+            if (HasLegacyAgentTab())
+            {
+                MoveBlockSectionToEtc();
+                BuildServiceModelPanels();
+            }
 
             // 스킬이 아직 로드되지 않았으면 백그라운드에서 로드 후 UI 구성
             var app = System.Windows.Application.Current as App;
@@ -76,8 +87,11 @@ public partial class SettingsWindow : Window
                 });
             }
 
-            BuildToolRegistryPanel();
-            LoadAdvancedSettings();
+            if (HasLegacyAgentTab())
+            {
+                BuildToolRegistryPanel();
+                LoadAdvancedSettings();
+            }
             RefreshStorageInfo();
             // 개발자 모드는 저장된 설정 유지 (끄면 하위 기능 모두 비활성)
             UpdateDevModeContentVisibility();
@@ -85,10 +99,14 @@ public partial class SettingsWindow : Window
             ApplyAiEnabledState(app?.SettingsService?.Settings.AiEnabled ?? false, init: true);
             ApplyOperationModeState(app?.SettingsService?.Settings.OperationMode);
             InitializeDisplayModeUi();
-            SyncAgentSelectionCards();
+            if (HasLegacyAgentTab())
+                SyncAgentSelectionCards();
         };
     }
 
+    private bool HasLegacyAgentTab()
+        => MainSettingsTab != null && AgentTabItem != null && MainSettingsTab.Items.Contains(AgentTabItem);
+
     private void SyncAgentSelectionCards()
     {
         var service = (_vm.LlmService ?? "").Trim().ToLowerInvariant();
@@ -139,8 +157,9 @@ public partial class SettingsWindow : Window
     private void InitializeDisplayModeUi()
     {
         var app = System.Windows.Application.Current as App;
-        var saved = app?.SettingsService?.Settings?.Llm?.AgentUiExpressionLevel;
-        SetDisplayMode(saved ?? "balanced", persist: false);
+        if (app?.SettingsService?.Settings?.Llm != null)
+            app.SettingsService.Settings.Llm.AgentUiExpressionLevel = "rich";
+        SetDisplayMode("rich", persist: false);
     }
 
     private void DisplayMode_Checked(object sender, RoutedEventArgs e)
@@ -159,14 +178,7 @@ public partial class SettingsWindow : Window
     private void AgentDisplayMode_Checked(object sender, RoutedEventArgs e)
     {
         if (_isDisplayModeSyncing) return;
-        var rb = sender as RadioButton;
-        var next = rb?.Name switch
-        {
-            "AgentDisplayModeRich" => "rich",
-            "AgentDisplayModeSimple" => "simple",
-            _ => "balanced",
-        };
-        SetDisplayMode(next, persist: true);
+        SetDisplayMode("rich", persist: true);
     }
 
     private void SetDisplayMode(string mode, bool persist)
@@ -195,7 +207,8 @@ public partial class SettingsWindow : Window
         }
 
         ApplyMainTabVisibility(mode);
-        ApplyAgentSubTabVisibility(mode);
+        if (HasLegacyAgentTab())
+            ApplyAgentSubTabVisibility(mode);
 
         if (!persist) return;
         var app = System.Windows.Application.Current as App;
@@ -210,11 +223,11 @@ public partial class SettingsWindow : Window
 
         var simpleKeep = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
         {
-            "일반", "테마", "기능", "AX Agent"
+            "일반", "테마", "기능"
         };
         var balancedKeep = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
         {
-            "일반", "테마", "클립보드", "캡처", "시스템", "기능", "AX Agent"
+            "일반", "테마", "클립보드", "캡처", "시스템", "기능"
         };
 
         foreach (var item in MainSettingsTab.Items.OfType<TabItem>())
@@ -229,12 +242,6 @@ public partial class SettingsWindow : Window
 
             if (string.Equals(header, "알림", StringComparison.OrdinalIgnoreCase))
                 visible = false;
-            if (string.Equals(header, "AX Agent", StringComparison.OrdinalIgnoreCase)
-                && !((System.Windows.Application.Current as App)?.SettingsService?.Settings.AiEnabled ?? false))
-            {
-                visible = false;
-            }
-
             item.Visibility = visible ? Visibility.Visible : Visibility.Collapsed;
         }
 
@@ -2583,31 +2590,12 @@ public partial class SettingsWindow : Window
     /// <summary>AI 기능 토글 상태를 UI와 설정에 반영합니다.</summary>
     private void ApplyAiEnabledState(bool enabled, bool init = false)
     {
-        // 토글 스위치 체크 상태 동기화 (init 시에는 이벤트 억제)
-        if (AiEnabledToggle != null && AiEnabledToggle.IsChecked != enabled)
-        {
-            AiEnabledToggle.IsChecked = enabled;
-        }
-        if (AgentAiEnabledToggle != null && AgentAiEnabledToggle.IsChecked != enabled)
-        {
-            AgentAiEnabledToggle.IsChecked = enabled;
-        }
-        if (AgentTabItem != null)
-            AgentTabItem.Visibility = enabled ? Visibility.Visible : Visibility.Collapsed;
-
         ApplyMainTabVisibility(NormalizeDisplayMode((System.Windows.Application.Current as App)?.SettingsService?.Settings?.Llm?.AgentUiExpressionLevel));
     }
 
     public void SelectAgentSettingsTab()
     {
-        if (AgentTabItem == null || MainSettingsTab == null || AgentTabItem.Visibility != Visibility.Visible)
-            return;
-
-        MainSettingsTab.SelectedItem = AgentTabItem;
-        if (AgentTabCommon != null)
-            AgentTabCommon.IsChecked = true;
-        AgentSubTab_Checked(this, new RoutedEventArgs());
-        Activate();
+        OpenAgentSettingsShortcut(closeAfterOpen: false);
     }
 
     private void BtnAgentSettingsBack_Click(object sender, RoutedEventArgs e)
@@ -2625,13 +2613,32 @@ public partial class SettingsWindow : Window
 
     private void BtnAgentShortcut_Click(object sender, RoutedEventArgs e)
     {
-        SelectAgentSettingsTab();
+        OpenAgentSettingsShortcut(closeAfterOpen: true);
+    }
+
+    private void MainSettingsTab_SelectionChanged(object sender, SelectionChangedEventArgs e)
+    {
+        if (MainSettingsTab?.SelectedItem is not TabItem selected)
+            return;
+
+        if (!ReferenceEquals(selected, AgentShortcutTabItem))
+            return;
+
+        OpenAgentSettingsShortcut(closeAfterOpen: true);
+    }
+
+    private void OpenAgentSettingsShortcut(bool closeAfterOpen)
+    {
+        var app = System.Windows.Application.Current as App;
+        app?.OpenAgentSettingsInChat();
+
+        if (closeAfterOpen)
+            Close();
     }
 
     private void ApplyOperationModeState(string? mode)
     {
         var normalized = OperationModePolicy.Normalize(mode);
-        SyncOperationModeCombo(OperationModeCombo, normalized);
         if (AgentOperationModeInternal != null) AgentOperationModeInternal.IsChecked = normalized == OperationModePolicy.InternalMode;
         if (AgentOperationModeExternal != null) AgentOperationModeExternal.IsChecked = normalized == OperationModePolicy.ExternalMode;
     }
@@ -2833,7 +2840,6 @@ public partial class SettingsWindow : Window
         else
         {
             // 취소/실패 ? 토글 원상복구
-            if (AiEnabledToggle != null) AiEnabledToggle.IsChecked = false;
             if (AgentAiEnabledToggle != null) AgentAiEnabledToggle.IsChecked = false;
         }
     }