코워크·코드 경량 모드 애니메이션 비용 추가 완화

- 실행 중 경량 라이브 진행 모드에서 메시지 진입 애니메이션과 진행 마커 펄스를 줄여 UI 스레드 부담을 더 낮춤

- AX Agent 라이브 카드의 등장·퇴장 애니메이션과 아이콘 opacity 펄스도 경량 모드에서는 생략하도록 조정함

- README와 DEVELOPMENT 문서를 2026-04-08 12:40 (KST) 기준으로 갱신함

- 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

@@ -7039,16 +7039,21 @@ public partial class ChatWindow : Window
             Width = msgMaxWidth,
             MaxWidth = msgMaxWidth,
             Margin = new Thickness(0, 4, 0, 6),
-            Opacity = 0,
-            RenderTransform = new TranslateTransform(0, 8),
+            Opacity = IsLightweightLiveProgressMode(runTab) ? 1 : 0,
+            RenderTransform = IsLightweightLiveProgressMode(runTab)
+                ? Transform.Identity
+                : new TranslateTransform(0, 8),
         };
-        container.BeginAnimation(UIElement.OpacityProperty,
-            new DoubleAnimation(0, 1, TimeSpan.FromMilliseconds(260)));
-        ((TranslateTransform)container.RenderTransform).BeginAnimation(
-            TranslateTransform.YProperty,
-            new DoubleAnimation(8, 0, TimeSpan.FromMilliseconds(280))
-            { EasingFunction = new System.Windows.Media.Animation.QuadraticEase
-                { EasingMode = System.Windows.Media.Animation.EasingMode.EaseOut } });
+        if (!IsLightweightLiveProgressMode(runTab))
+        {
+            container.BeginAnimation(UIElement.OpacityProperty,
+                new DoubleAnimation(0, 1, TimeSpan.FromMilliseconds(260)));
+            ((TranslateTransform)container.RenderTransform).BeginAnimation(
+                TranslateTransform.YProperty,
+                new DoubleAnimation(8, 0, TimeSpan.FromMilliseconds(280))
+                { EasingFunction = new System.Windows.Media.Animation.QuadraticEase
+                    { EasingMode = System.Windows.Media.Animation.EasingMode.EaseOut } });
+        }
 
         // 헤더: 펄싱 아이콘 + 에이전트 이름 + 경과 시간
         var headerGrid = new Grid { Margin = new Thickness(2, 0, 0, 3) };
@@ -7057,10 +7062,13 @@ public partial class ChatWindow : Window
         headerGrid.ColumnDefinitions.Add(new ColumnDefinition { Width = new GridLength(1, GridUnitType.Star) });
 
         var liveIcon = CreateMiniLauncherIcon(pixelSize: 4.0);
-        liveIcon.BeginAnimation(UIElement.OpacityProperty,
-            new DoubleAnimation(1.0, 0.35, TimeSpan.FromMilliseconds(750))
-            { AutoReverse = true, RepeatBehavior = System.Windows.Media.Animation.RepeatBehavior.Forever,
-              EasingFunction = new System.Windows.Media.Animation.SineEase() });
+        if (!IsLightweightLiveProgressMode(runTab))
+        {
+            liveIcon.BeginAnimation(UIElement.OpacityProperty,
+                new DoubleAnimation(1.0, 0.35, TimeSpan.FromMilliseconds(750))
+                { AutoReverse = true, RepeatBehavior = System.Windows.Media.Animation.RepeatBehavior.Forever,
+                  EasingFunction = new System.Windows.Media.Animation.SineEase() });
+        }
         Grid.SetColumn(liveIcon, 0);
         headerGrid.Children.Add(liveIcon);
 
@@ -7191,7 +7199,7 @@ public partial class ChatWindow : Window
         _agentLiveSubItemTexts.Clear();
         _agentLiveCurrentCategory = null;
 
-        if (animated && MessagePanel != null && MessagePanel.Children.Contains(toRemove))
+        if (animated && MessagePanel != null && MessagePanel.Children.Contains(toRemove) && !IsLightweightLiveProgressMode())
         {
             var anim = new DoubleAnimation(toRemove.Opacity, 0, TimeSpan.FromMilliseconds(160));
             anim.Completed += (_, _) => MessagePanel?.Children.Remove(toRemove);