AX Agent UI와 응답 마감 엔진을 claw-code 기준으로 1차 재구성

사이드바, 메시지 축, 빈 상태, 컴포저를 더 얇고 밀도 높은 구조로 재배치하고 보조 상태 스트립 노출을 줄였습니다.

반응형 폭 계산을 다시 조정해 창 크기 변화에서도 메시지와 컴포저가 같은 중심선으로 자연스럽게 줄어들게 했습니다.

응답 취소와 오류 마감은 AxAgentExecutionEngine의 FinalizeExecutionContent로 공통화해 전송과 재생성의 후처리 경로를 맞췄습니다.

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/Services/Agent/AxAgentExecutionEngine.cs

@@ -16,6 +16,7 @@ public sealed class AxAgentExecutionEngine
         ExecutionMode Mode,
         IReadOnlyList<string> PromptStack,
         List<ChatMessage> Messages);
+    public sealed record FinalizedContent(string Content, bool Cancelled, string? FailureReason);
     public sealed record SessionMutationResult(
         ChatConversation CurrentConversation,
         ChatConversation UpdatedConversation);
@@ -162,6 +163,22 @@ public sealed class AxAgentExecutionEngine
         return normalized;
     }
 
+    public FinalizedContent FinalizeExecutionContent(string? currentContent, Exception? error = null, bool cancelled = false)
+    {
+        if (cancelled)
+        {
+            var content = string.IsNullOrWhiteSpace(currentContent) ? "(취소됨)" : currentContent!;
+            return new FinalizedContent(content, true, "사용자가 작업을 중단했습니다.");
+        }
+
+        if (error != null)
+        {
+            return new FinalizedContent($"⚠ 오류: {error.Message}", false, error.Message);
+        }
+
+        return new FinalizedContent(currentContent ?? string.Empty, false, null);
+    }
+
     public SessionMutationResult AppendExecutionEvent(
         ChatSessionStateService session,
         ChatStorageService storage,

src/AxCopilot/Views/ChatWindow.xaml

@@ -406,7 +406,7 @@
                 <!-- 축소 아이콘 바 (사이드바 닫힘 시 표시) -->
                 <ColumnDefinition x:Name="IconBarColumn" Width="0"/>
                 <!-- 사이드바 (열림 시 표시) -->
-                <ColumnDefinition x:Name="SidebarColumn" Width="256" MinWidth="0"/>
+                <ColumnDefinition x:Name="SidebarColumn" Width="220" MinWidth="0"/>
                 <ColumnDefinition Width="*"/>
                 <!-- 미리보기 스플리터 -->
                 <ColumnDefinition x:Name="SplitterColumn" Width="0"/>
@@ -477,7 +477,7 @@
                     BorderThickness="0,0,1,0">
                 <Grid>
                     <Grid.RowDefinitions>
-                        <RowDefinition Height="52"/>
+                        <RowDefinition Height="48"/>
                         <RowDefinition Height="Auto"/>
                         <RowDefinition Height="Auto"/>
                         <RowDefinition Height="Auto"/>
@@ -487,18 +487,18 @@
                     </Grid.RowDefinitions>
 
                     <!-- 헤더 -->
-                    <Grid Grid.Row="0" Margin="14,0">
+                    <Grid Grid.Row="0" Margin="12,0">
                         <StackPanel Orientation="Horizontal" VerticalAlignment="Center">
-                            <Border Background="{DynamicResource HintBackground}" CornerRadius="7"
+                            <Border Background="{DynamicResource HintBackground}" CornerRadius="6"
                                     BorderBrush="{DynamicResource BorderColor}"
                                     BorderThickness="1"
-                                    Width="24" Height="24">
-                                <TextBlock Text="&#xE8BD;" FontFamily="Segoe MDL2 Assets" FontSize="12"
+                                    Width="22" Height="22">
+                                <TextBlock Text="&#xE8BD;" FontFamily="Segoe MDL2 Assets" FontSize="11"
                                            Foreground="{DynamicResource AccentColor}" HorizontalAlignment="Center" VerticalAlignment="Center"/>
                             </Border>
-                            <TextBlock Text="AX Agent" FontSize="13.5" FontWeight="SemiBold"
+                            <TextBlock Text="AX Agent" FontSize="13" FontWeight="SemiBold"
                                        Foreground="{DynamicResource PrimaryText}"
-                                       VerticalAlignment="Center" Margin="9,0,0,0"/>
+                                       VerticalAlignment="Center" Margin="8,0,0,0"/>
                         </StackPanel>
                     </Grid>
 
@@ -507,8 +507,8 @@
                         <StackPanel>
                             <Border x:Name="SidebarNewChatTrigger"
                                     Background="Transparent"
-                                    CornerRadius="8"
-                                    Padding="9,7"
+                                    CornerRadius="7"
+                                    Padding="8,6"
                                     Cursor="Hand"
                                     MouseEnter="SidebarNewChatTrigger_MouseEnter"
                                     MouseLeave="SidebarNewChatTrigger_MouseLeave"
@@ -523,7 +523,7 @@
                                                Foreground="{DynamicResource SecondaryText}" VerticalAlignment="Center"/>
                                     <TextBlock Grid.Column="1" Text="새 대화"
                                                Foreground="{DynamicResource PrimaryText}"
-                                               FontSize="11" Margin="7,0,0,0" VerticalAlignment="Center"/>
+                                               FontSize="10.8" Margin="7,0,0,0" VerticalAlignment="Center"/>
                                     <TextBlock x:Name="SidebarNewChatShortcutHint"
                                                Grid.Column="2"
                                                Text="Ctrl+N"
@@ -536,8 +536,8 @@
 
                             <Border x:Name="SidebarSearchTrigger"
                                     Background="Transparent"
-                                    CornerRadius="8"
-                                    Padding="9,7"
+                                    CornerRadius="7"
+                                    Padding="8,6"
                                     Cursor="Hand"
                                     MouseEnter="SidebarSearchTrigger_MouseEnter"
                                     MouseLeave="SidebarSearchTrigger_MouseLeave"
@@ -552,7 +552,7 @@
                                                Foreground="{DynamicResource SecondaryText}" VerticalAlignment="Center"/>
                                     <TextBlock Grid.Column="1" Text="검색"
                                                Foreground="{DynamicResource PrimaryText}"
-                                               FontSize="11" Margin="7,0,0,0" VerticalAlignment="Center"/>
+                                               FontSize="10.8" Margin="7,0,0,0" VerticalAlignment="Center"/>
                                     <TextBlock x:Name="SidebarSearchShortcutHint"
                                                Grid.Column="2"
                                                Text="Ctrl+K"
@@ -921,7 +921,7 @@
                 <Border x:Name="AgentProgressBar" Grid.Row="2" Visibility="Collapsed"
                         Background="{DynamicResource HintBackground}"
                         BorderBrush="{DynamicResource SeparatorColor}" BorderThickness="0,0,0,1"
-                        Padding="12,3,12,3">
+                        Padding="10,2,10,2">
                     <Grid>
                         <Grid.ColumnDefinitions>
                             <ColumnDefinition Width="Auto"/>
@@ -1181,10 +1181,10 @@
                               VerticalScrollBarVisibility="Auto"
                               HorizontalScrollBarVisibility="Disabled"
                               Background="{DynamicResource LauncherBackground}"
-                              Padding="24,14,24,8">
+                              Padding="18,10,18,6">
                     <StackPanel x:Name="MessagePanel"
-                                Margin="0,0,0,20"
-                                MaxWidth="880"
+                                Margin="0,0,0,14"
+                                MaxWidth="840"
                                 HorizontalAlignment="Center">
                         <StackPanel.RenderTransform>
                             <TranslateTransform/>
@@ -1196,8 +1196,8 @@
                 <Grid x:Name="EmptyState" Grid.Row="3"
                       HorizontalAlignment="Stretch"
                       VerticalAlignment="Center"
-                      MaxWidth="880"
-                      Margin="24,8,24,8">
+                      MaxWidth="840"
+                      Margin="18,8,18,8">
                     <Grid.RowDefinitions>
                         <RowDefinition Height="Auto"/>
                         <RowDefinition Height="16"/>
@@ -1208,24 +1208,24 @@
                                 HorizontalAlignment="Center"
                                 VerticalAlignment="Top"
                                 Margin="0,10,0,2">
-                        <Border x:Name="EmptyIcon" CornerRadius="18" Width="54" Height="54"
-                                HorizontalAlignment="Center" Margin="0,0,0,14"
+                        <Border x:Name="EmptyIcon" CornerRadius="14" Width="44" Height="44"
+                                HorizontalAlignment="Center" Margin="0,0,0,12"
                                 Background="{DynamicResource ItemBackground}"
                                 BorderBrush="{DynamicResource BorderColor}"
                                 BorderThickness="1">
-                            <TextBlock Text="&#xE8BD;" FontFamily="Segoe MDL2 Assets" FontSize="30"
+                            <TextBlock Text="&#xE8BD;" FontFamily="Segoe MDL2 Assets" FontSize="22"
                                        Foreground="{DynamicResource AccentColor}"
                                        HorizontalAlignment="Center" VerticalAlignment="Center"/>
                         </Border>
 
-                        <TextBlock x:Name="EmptyStateTitle" Text="작업을 시작하세요" FontSize="20" FontWeight="SemiBold"
+                        <TextBlock x:Name="EmptyStateTitle" Text="작업을 시작하세요" FontSize="18" FontWeight="SemiBold"
                                    Foreground="{DynamicResource PrimaryText}" HorizontalAlignment="Center"/>
                         <TextBlock x:Name="EmptyStateDesc" Text="프롬프트를 입력하거나 아래 작업 유형을 선택하면 됩니다"
-                                   FontSize="12" Foreground="{DynamicResource SecondaryText}"
+                                   FontSize="11.5" Foreground="{DynamicResource SecondaryText}"
                                    HorizontalAlignment="Center"
                                    TextAlignment="Center"
-                                   Width="340"
-                                   Margin="0,8,0,0"/>
+                                   Width="320"
+                                   Margin="0,6,0,0"/>
                     </StackPanel>
 
                     <ScrollViewer x:Name="TopicPresetScrollViewer"
@@ -1560,9 +1560,9 @@
 
                 <!-- ── 입력 바 ── -->
                 <Border x:Name="ComposerShell" Grid.Row="4"
-                        Margin="18,0,18,20"
+                        Margin="18,0,18,16"
                         Width="Auto"
-                        MaxWidth="820"
+                        MaxWidth="760"
                         HorizontalAlignment="Center"
                         VerticalAlignment="Bottom">
                     <StackPanel HorizontalAlignment="Stretch">
@@ -1571,9 +1571,9 @@
                                 Background="{DynamicResource LauncherBackground}"
                                 BorderBrush="{DynamicResource BorderColor}"
                                 BorderThickness="1"
-                                CornerRadius="14"
-                                Padding="10,8,10,8"
-                                Margin="0,0,0,6">
+                                CornerRadius="12"
+                                Padding="9,7,9,7"
+                                Margin="0,0,0,5">
                             <Border.Effect>
                                 <DropShadowEffect BlurRadius="10" ShadowDepth="0" Opacity="0.05"/>
                             </Border.Effect>
@@ -1628,7 +1628,7 @@
                             <StackPanel x:Name="DraftQueuePanel"
                                         Visibility="Collapsed"
                                         Margin="0,0,0,8"/>
-                            <Border x:Name="InputGlowBorder" CornerRadius="16" Opacity="0"
+                            <Border x:Name="InputGlowBorder" CornerRadius="14" Opacity="0"
                                     Margin="-3" IsHitTestVisible="False">
                                 <Border.BorderBrush>
                                     <LinearGradientBrush x:Name="RainbowBrush" StartPoint="0,0" EndPoint="1,1">
@@ -1651,10 +1651,10 @@
                             <!-- 실제 입력 영역 -->
                                 <Border x:Name="InputBorder"
                                 Background="{DynamicResource LauncherBackground}"
-                                CornerRadius="12" Padding="6"
+                                CornerRadius="10" Padding="5"
                                 BorderBrush="{DynamicResource BorderColor}" BorderThickness="1">
                             <Border.Effect>
-                                <DropShadowEffect BlurRadius="14" ShadowDepth="0" Opacity="0.06"/>
+                                <DropShadowEffect BlurRadius="10" ShadowDepth="0" Opacity="0.04"/>
                             </Border.Effect>
                             <Grid>
                                 <Grid.RowDefinitions>
@@ -1665,12 +1665,11 @@
                                 </Grid.RowDefinitions>
 
                                 <!-- Row 0: 모델 셀렉터 + 템플릿 버튼 -->
-                                <Grid Grid.Row="0" Margin="2,0,2,2">
+                                <Grid Grid.Row="0" Margin="1,0,1,2">
                                     <Grid.ColumnDefinitions>
                                         <ColumnDefinition Width="Auto"/>
                                         <ColumnDefinition Width="*"/>
                                         <ColumnDefinition Width="Auto"/>
-                                        <ColumnDefinition Width="Auto"/>
                                     </Grid.ColumnDefinitions>
                                     <Button x:Name="BtnModelSelector"
                                             Style="{StaticResource OutlineHoverBtn}"
@@ -1688,7 +1687,7 @@
                                                        VerticalAlignment="Center" Margin="0,0,4,0"/>
                                             <TextBlock x:Name="ModelLabel" FontSize="11.5"
                                                        Foreground="{DynamicResource SecondaryText}"
-                                                       MaxWidth="360"
+                                                       MaxWidth="300"
                                                        TextTrimming="CharacterEllipsis"
                                                        VerticalAlignment="Center"/>
                                             <TextBlock Text="&#xE70D;" FontFamily="Segoe MDL2 Assets" FontSize="8"
@@ -1698,13 +1697,14 @@
                                     </Button>
                                     <Border x:Name="TokenUsageCard"
                                             Grid.Column="2"
-                                            Margin="5,0,5,0"
-                                            Padding="5,2"
+                                            Margin="4,0,0,0"
+                                            Padding="4,2"
                                             CornerRadius="7"
                                             BorderBrush="{DynamicResource BorderColor}"
                                             BorderThickness="1"
                                             Background="{DynamicResource ItemBackground}"
-                                            VerticalAlignment="Center">
+                                            VerticalAlignment="Center"
+                                            Visibility="Collapsed">
                                         <Grid>
                                             <Grid.ColumnDefinitions>
                                                 <ColumnDefinition Width="Auto"/>
@@ -1772,7 +1772,7 @@
                                     </Border>
                                     <Button x:Name="BtnTemplateSelector"
                                             Style="{StaticResource OutlineHoverBtn}"
-                                            Grid.Column="3"
+                                            Grid.Column="2"
                                             HorizontalAlignment="Right"
                                             Margin="0"
                                             MinHeight="24"

src/AxCopilot/Views/ChatWindow.xaml.cs

@@ -8460,16 +8460,17 @@ public partial class ChatWindow : Window
         }
         catch (OperationCanceledException)
         {
-            assistantContent = string.IsNullOrWhiteSpace(assistantContent) ? "(취소됨)" : assistantContent;
-            draftCancelled = true;
-            draftFailure = "사용자가 작업을 중단했습니다.";
+            var finalized = _chatEngine.FinalizeExecutionContent(assistantContent, cancelled: true);
+            assistantContent = finalized.Content;
+            draftCancelled = finalized.Cancelled;
+            draftFailure = finalized.FailureReason;
         }
         catch (Exception ex)
         {
-            var errMsg = $"⚠ 오류: {ex.Message}";
-            assistantContent = errMsg;
+            var finalized = _chatEngine.FinalizeExecutionContent(assistantContent, ex);
+            assistantContent = finalized.Content;
             ShowToast("실패한 요청은 작업 요약에서 다시 시도할 수 있습니다.", "\uE783", 2600);
-            draftFailure = ex.Message;
+            draftFailure = finalized.FailureReason;
         }
         finally
         {
@@ -8735,20 +8736,18 @@ public partial class ChatWindow : Window
         sb.AppendLine("You are AX Copilot Agent. You can read, write, and edit files using the provided tools.");
         sb.AppendLine($"Today's date: {DateTime.Now:yyyy년 M월 d일} ({DateTime.Now:yyyy-MM-dd}, {DateTime.Now:dddd}).");
         sb.AppendLine("Available skills: excel_create (.xlsx), docx_create (.docx), csv_create (.csv), markdown_create (.md), html_create (.html), script_create (.bat/.ps1), document_review (품질 검증), format_convert (포맷 변환).");
-        sb.AppendLine("Only present a step-by-step execution plan when the user explicitly asks for a plan or when the session is already in plan mode.");
-        sb.AppendLine("For ordinary Cowork requests, proceed directly with the work instead of stopping for plan approval.");
+        sb.AppendLine("Only present a step-by-step plan when the user explicitly asks for a plan or when the task is too ambiguous to execute safely.");
+        sb.AppendLine("For ordinary Cowork requests, proceed directly with the work and focus on producing the real artifact.");
         sb.AppendLine("After creating files, summarize what was created and include the actual output path.");
         sb.AppendLine("Do not stop after a single step. Continue autonomously until the request is completed or a concrete blocker (permission denial, missing dependency, hard error) is encountered.");
         sb.AppendLine("When adapting external references, rewrite names/structure/comments to AX Copilot style. Avoid clone-like outputs.");
         sb.AppendLine("IMPORTANT: When creating documents with dates, always use today's actual date above. Never use placeholder or fictional dates.");
-        sb.AppendLine("IMPORTANT: When asked to create a document with multiple sections (reports, proposals, analyses, etc.), you MUST:");
-        sb.AppendLine("  1. First, plan the document: decide the exact sections (headings), their order, and key points for each section based on the topic.");
-        sb.AppendLine("  2. Call document_plan with sections_hint = your planned section titles (comma-separated). Example: sections_hint=\"회사 개요, 사업 현황, 재무 분석, SWOT, 전략 제언, 결론\"");
-        sb.AppendLine("     This ensures the document structure matches YOUR plan, not a generic template.");
-        sb.AppendLine("  3. Then immediately call html_create (or docx_create/file_write) using the scaffold from document_plan.");
-        sb.AppendLine("  4. Write actual detailed content for EVERY section — no skipping, no placeholders, no minimal content.");
-        sb.AppendLine("  5. Do NOT call html_create directly without document_plan for multi-section documents.");
-        sb.AppendLine("  6. Do not finish with a plan only. The task is complete only after the document file has actually been created or updated.");
+        sb.AppendLine("IMPORTANT: For reports, proposals, analyses, and manuals with multiple sections:");
+        sb.AppendLine("  1. Decide the document structure internally first.");
+        sb.AppendLine("  2. Use document_plan only when it improves the actual output, not as a mandatory user-facing approval step.");
+        sb.AppendLine("  3. Then immediately create the real output file with html_create, docx_create, markdown_create, or file_write.");
+        sb.AppendLine("  4. Fill every section with real content. Do not stop at an outline or plan only.");
+        sb.AppendLine("  5. The task is complete only after the actual document file has been created or updated.");
 
         // 문서 품질 검증 루프
         sb.AppendLine("\n## Document Quality Review");
@@ -8854,10 +8853,10 @@ public partial class ChatWindow : Window
         sb.AppendLine("3. ANALYZE: Use grep (with context_lines=2) + file_read to deeply understand the code you'll modify.");
         sb.AppendLine("   - Always check callers/references: grep for function/class names to find all usage points.");
         sb.AppendLine("   - Read test files related to the code you're changing to understand expected behavior.");
-        sb.AppendLine("4. PLAN: Present your analysis + impact assessment. List ALL files that will be modified.");
+        sb.AppendLine("4. PLAN: Build an internal execution outline and impact assessment before editing.");
+        sb.AppendLine("   - Present the outline explicitly only when the user asks for a plan or the change is clearly high risk.");
         sb.AppendLine("   - Explain WHY each change is needed and what could break.");
-        sb.AppendLine("   - If you touch shared services, interfaces, models, controllers, view-models, app startup, or dependency registration, treat it as a high-impact change.");
-        sb.AppendLine("   - Wait for user approval before proceeding.");
+        sb.AppendLine("   - If you touch shared services, interfaces, models, controllers, view-models, app startup, or dependency registration, treat it as a high-impact change and call out the impact clearly.");
         sb.AppendLine("5. IMPLEMENT: Apply changes using file_edit (preferred — shows diff). Use file_write only for new files.");
         sb.AppendLine("   - Make the MINIMUM changes needed. Don't refactor unrelated code.");
         sb.AppendLine("   - Prefer file_edit with replace_all=false for precision edits.");
@@ -9258,7 +9257,18 @@ public partial class ChatWindow : Window
 
         if (ConversationStatusStrip != null && ConversationStatusStripLabel != null)
         {
-            if (string.Equals(status.StripKind, "permission_waiting", StringComparison.OrdinalIgnoreCase))
+            var showCompactStrip = !string.Equals(_activeTab, "Chat", StringComparison.OrdinalIgnoreCase)
+                && (string.Equals(status.StripKind, "permission_waiting", StringComparison.OrdinalIgnoreCase)
+                    || string.Equals(status.StripKind, "failed_run", StringComparison.OrdinalIgnoreCase)
+                    || string.Equals(status.StripKind, "permission_denied", StringComparison.OrdinalIgnoreCase)
+                    || string.Equals(status.StripKind, "queue_blocked", StringComparison.OrdinalIgnoreCase));
+
+            if (!showCompactStrip)
+            {
+                ConversationStatusStrip.Visibility = Visibility.Collapsed;
+                ConversationStatusStripLabel.Text = "";
+            }
+            else if (string.Equals(status.StripKind, "permission_waiting", StringComparison.OrdinalIgnoreCase))
             {
                 ConversationStatusStrip.Visibility = Visibility.Visible;
                 ConversationStatusStrip.Background = BrushFromHex("#FFF7ED");
@@ -9266,14 +9276,6 @@ public partial class ChatWindow : Window
                 ConversationStatusStripLabel.Foreground = BrushFromHex("#C2410C");
                 ConversationStatusStripLabel.Text = status.StripText;
             }
-            else if (string.Equals(status.StripKind, "running", StringComparison.OrdinalIgnoreCase))
-            {
-                ConversationStatusStrip.Visibility = Visibility.Visible;
-                ConversationStatusStrip.Background = BrushFromHex("#DBEAFE");
-                ConversationStatusStrip.BorderBrush = BrushFromHex("#93C5FD");
-                ConversationStatusStripLabel.Foreground = BrushFromHex("#1D4ED8");
-                ConversationStatusStripLabel.Text = status.StripText;
-            }
             else if (string.Equals(status.StripKind, "failed_run", StringComparison.OrdinalIgnoreCase)
                   || string.Equals(status.StripKind, "permission_denied", StringComparison.OrdinalIgnoreCase))
             {
@@ -9299,14 +9301,6 @@ public partial class ChatWindow : Window
                 ConversationStatusStripLabel.Foreground = BrushFromHex("#B45309");
                 ConversationStatusStripLabel.Text = status.StripText;
             }
-            else if (string.Equals(status.StripKind, "background", StringComparison.OrdinalIgnoreCase))
-            {
-                ConversationStatusStrip.Visibility = Visibility.Visible;
-                ConversationStatusStrip.Background = BrushFromHex("#EFF6FF");
-                ConversationStatusStrip.BorderBrush = BrushFromHex("#BFDBFE");
-                ConversationStatusStripLabel.Foreground = BrushFromHex("#1D4ED8");
-                ConversationStatusStripLabel.Text = status.StripText;
-            }
             else
             {
                 ConversationStatusStrip.Visibility = Visibility.Collapsed;
@@ -9323,8 +9317,10 @@ public partial class ChatWindow : Window
             || BtnQuickRunningFilter == null || BtnQuickHotSort == null)
             return;
 
-        var hasQuickSignal = _runningConversationCount > 0
-                             || _spotlightConversationCount > 0;
+        var allowQuickStrip = !string.Equals(_activeTab, "Chat", StringComparison.OrdinalIgnoreCase);
+        var hasQuickSignal = allowQuickStrip
+                             && (_runningConversationCount > 0
+                                 || _spotlightConversationCount > 0);
 
         ConversationQuickStrip.Visibility = hasQuickSignal
             ? Visibility.Visible
@@ -10993,12 +10989,11 @@ public partial class ChatWindow : Window
         }
         catch (OperationCanceledException)
         {
-            assistantContent = string.IsNullOrWhiteSpace(assistantContent) ? "(취소됨)" : assistantContent;
+            assistantContent = _chatEngine.FinalizeExecutionContent(assistantContent, cancelled: true).Content;
         }
         catch (Exception ex)
         {
-            var errMsg = $"⚠ 오류: {ex.Message}";
-            assistantContent = errMsg;
+            assistantContent = _chatEngine.FinalizeExecutionContent(assistantContent, ex).Content;
             ShowToast("실패한 요청은 작업 요약에서 다시 시도할 수 있습니다.", "\uE783", 2600);
         }
         finally
@@ -11039,16 +11034,16 @@ public partial class ChatWindow : Window
         if (viewportWidth < 200)
             return false;
 
-        // claw-code처럼 창이 줄어들면 메시지 축과 컴포저가 함께 자연스럽게 줄어들도록,
-        // 남는 본문 폭을 기준으로 상한만 두고 반응형 폭을 다시 계산합니다.
-        var contentWidth = Math.Max(360, viewportWidth - 48);
-        var messageWidth = Math.Clamp(contentWidth * 0.9, 360, 920);
-        var composerWidth = Math.Clamp(contentWidth * 0.82, 360, 820);
+        // claw-code처럼 메시지 축과 입력축이 같은 중심선을 공유하도록,
+        // 본문 폭 상한을 조금 더 낮추고 창 폭 변화에 더 부드럽게 반응시킵니다.
+        var contentWidth = Math.Max(340, viewportWidth - 32);
+        var messageWidth = Math.Clamp(contentWidth * 0.86, 340, 840);
+        var composerWidth = Math.Clamp(contentWidth * 0.78, 340, 760);
 
         if (contentWidth < 760)
         {
-            messageWidth = Math.Clamp(contentWidth - 8, 340, 820);
-            composerWidth = Math.Clamp(contentWidth - 28, 332, 760);
+            messageWidth = Math.Clamp(contentWidth - 10, 332, 760);
+            composerWidth = Math.Clamp(contentWidth - 20, 328, 700);
         }
 
         var changed = false;