전체 코드 오류와 성능 병목을 점검하고 핵심 핫패스를 정리한다

- 런처 색인에서 임시 파일, 숨김/시스템 경로, Office 임시 파일을 감시와 색인 대상에서 제외해 불필요한 재색인과 디스크 I/O를 줄인다

- AX Agent 표현 수준 저장값이 매번 rich로 덮어쓰이던 버그를 수정해 balanced/simple/rich 설정이 실제로 유지되게 한다

- 최소화/숨김 상태의 AX Agent 창은 transcript 재렌더를 지연했다가 다시 보일 때 한 번만 처리하고, 런처 인덱스 상태 타이머도 재사용하도록 바꿔 백그라운드 오버헤드를 줄인다

- 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

@@ -37,6 +37,7 @@ public partial class ChatWindow : Window
     private double _sidebarExpandedWidth = 262;
     private bool _isInWindowMoveSizeLoop;
     private bool _pendingResponsiveLayoutRefresh;
+    private bool _pendingHiddenExecutionHistoryRender;
     private CacheMode? _cachedRootCacheModeBeforeMove;
     private string _selectedCategory = ""; // "" = 전체
     private readonly Dictionary<string, string> _tabSelectedCategory = new(StringComparer.OrdinalIgnoreCase)
@@ -223,7 +224,7 @@ public partial class ChatWindow : Window
         _elapsedTimer = new DispatcherTimer { Interval = TimeSpan.FromSeconds(1) };
         _elapsedTimer.Tick += ElapsedTimer_Tick;
 
-        _typingTimer = new DispatcherTimer { Interval = TimeSpan.FromMilliseconds(12) };
+        _typingTimer = new DispatcherTimer { Interval = TimeSpan.FromMilliseconds(20) };
         _typingTimer.Tick += TypingTimer_Tick;
         _gitRefreshTimer = new DispatcherTimer { Interval = TimeSpan.FromMilliseconds(450) };
         _gitRefreshTimer.Tick += async (_, _) =>
@@ -237,14 +238,14 @@ public partial class ChatWindow : Window
             _conversationSearchTimer.Stop();
             RefreshConversationList();
         };
-        _inputUiRefreshTimer = new DispatcherTimer { Interval = TimeSpan.FromMilliseconds(90) };
+        _inputUiRefreshTimer = new DispatcherTimer { Interval = TimeSpan.FromMilliseconds(120) };
         _inputUiRefreshTimer.Tick += (_, _) =>
         {
             _inputUiRefreshTimer.Stop();
             RefreshContextUsageVisual();
             RefreshDraftQueueUi();
         };
-        _executionHistoryRenderTimer = new DispatcherTimer { Interval = TimeSpan.FromMilliseconds(120) };
+        _executionHistoryRenderTimer = new DispatcherTimer { Interval = TimeSpan.FromMilliseconds(180) };
         _executionHistoryRenderTimer.Tick += (_, _) =>
         {
             _executionHistoryRenderTimer.Stop();
@@ -265,7 +266,7 @@ public partial class ChatWindow : Window
             _conversationPersistTimer.Stop();
             FlushPendingConversationPersists();
         };
-        _agentUiEventTimer = new DispatcherTimer { Interval = TimeSpan.FromMilliseconds(90) };
+        _agentUiEventTimer = new DispatcherTimer { Interval = TimeSpan.FromMilliseconds(140) };
         _agentUiEventTimer.Tick += (_, _) =>
         {
             _agentUiEventTimer.Stop();
@@ -279,7 +280,7 @@ public partial class ChatWindow : Window
             _tokenUsagePopupCloseTimer.Stop();
             CloseTokenUsagePopupIfIdle();
         };
-        _responsiveLayoutTimer = new DispatcherTimer { Interval = TimeSpan.FromMilliseconds(90) };
+        _responsiveLayoutTimer = new DispatcherTimer { Interval = TimeSpan.FromMilliseconds(120) };
         _responsiveLayoutTimer.Tick += (_, _) =>
         {
             _responsiveLayoutTimer.Stop();
@@ -307,6 +308,8 @@ public partial class ChatWindow : Window
             if (TokenUsagePopup != null)
                 TokenUsagePopup.IsOpen = false;
         };
+        IsVisibleChanged += (_, _) => FlushDeferredUiRefreshIfNeeded();
+        StateChanged += (_, _) => FlushDeferredUiRefreshIfNeeded();
         UpdateConversationFailureFilterUi();
         UpdateConversationSortUi();
         UpdateConversationRunningFilterUi();
@@ -5651,10 +5654,28 @@ public partial class ChatWindow : Window
     private void ScheduleExecutionHistoryRender(bool autoScroll = true)
     {
         _pendingExecutionHistoryAutoScroll |= autoScroll;
+        if (!IsLoaded || !IsVisible || WindowState == WindowState.Minimized)
+        {
+            _pendingHiddenExecutionHistoryRender = true;
+            return;
+        }
         _executionHistoryRenderTimer.Stop();
         _executionHistoryRenderTimer.Start();
     }
 
+    private void FlushDeferredUiRefreshIfNeeded()
+    {
+        if (!IsLoaded || !IsVisible || WindowState == WindowState.Minimized)
+            return;
+
+        if (_pendingHiddenExecutionHistoryRender)
+        {
+            _pendingHiddenExecutionHistoryRender = false;
+            _executionHistoryRenderTimer.Stop();
+            _executionHistoryRenderTimer.Start();
+        }
+    }
+
     private void ScheduleTaskSummaryRefresh()
     {
         _taskSummaryRefreshTimer.Stop();
@@ -6241,13 +6262,14 @@ public partial class ChatWindow : Window
             : 0L;
         var inputTokens = Math.Max(0, _agentCumulativeInputTokens);
         var outputTokens = Math.Max(0, _agentCumulativeOutputTokens);
-        var currentElapsedBucket = (_liveAgentProgressHint?.ElapsedMs ?? 0) / 1000;
-        var nextElapsedBucket = elapsedMs / 1000;
+        var currentElapsedBucket = (_liveAgentProgressHint?.ElapsedMs ?? 0) / 3000;
+        var nextElapsedBucket = elapsedMs / 3000;
+        var currentTokenBucket = ((_liveAgentProgressHint?.InputTokens ?? 0) + (_liveAgentProgressHint?.OutputTokens ?? 0)) / 500;
+        var nextTokenBucket = (inputTokens + outputTokens) / 500;
         if (string.Equals(currentSummary, normalizedSummary, StringComparison.Ordinal)
             && string.Equals(currentToolName, toolName, StringComparison.Ordinal)
             && currentElapsedBucket == nextElapsedBucket
-            && (_liveAgentProgressHint?.InputTokens ?? 0) == inputTokens
-            && (_liveAgentProgressHint?.OutputTokens ?? 0) == outputTokens)
+            && currentTokenBucket == nextTokenBucket)
             return;
 
         _liveAgentProgressHint = normalizedSummary == null