AX Agent 메시지 상호작용 렌더 구조 분리 및 문서 갱신

- ChatWindow.MessageInteractions.cs를 추가해 좋아요·싫어요 피드백 버튼, 응답 메타 텍스트, 메시지 등장 애니메이션, 사용자 메시지 편집·재생성 흐름을 메인 창 코드에서 분리함

- ChatWindow.xaml.cs는 transcript 오케스트레이션과 상태 흐름에 더 집중하도록 정리해 claw-code 기준 renderer 분리 작업을 이어가기 쉬운 구조로 개선함

- README.md와 docs/DEVELOPMENT.md에 2026-04-06 08:27 (KST) 기준 변경 이력을 반영함

- dotnet build src/AxCopilot/AxCopilot.csproj -c Release -v minimal -p:OutputPath=bin\\verify\\ -p:IntermediateOutputPath=obj\\verify\\ 기준 경고 0 / 오류 0 확인

src/AxCopilot/Views/ChatWindow.xaml.cs

@@ -4249,336 +4249,6 @@ public partial class ChatWindow : Window
         return template;
     }
 
-    /// <summary>좋아요/싫어요 토글 피드백 버튼 (상태 영구 저장)</summary>
-    private Button CreateFeedbackButton(string outline, string filled, string tooltip,
-        Brush normalColor, Brush activeColor, ChatMessage? message = null, string feedbackType = "",
-        Action? resetSibling = null, Action<Action>? registerReset = null)
-    {
-        var hoverBrush = TryFindResource("PrimaryText") as Brush ?? Brushes.White;
-        var isActive = message?.Feedback == feedbackType;
-        var icon = new TextBlock
-        {
-            Text = isActive ? filled : outline,
-            FontFamily = new FontFamily("Segoe MDL2 Assets"),
-            FontSize = 12,
-            Foreground = isActive ? activeColor : normalColor,
-            VerticalAlignment = VerticalAlignment.Center,
-            RenderTransformOrigin = new Point(0.5, 0.5),
-            RenderTransform = new ScaleTransform(1, 1)
-        };
-        var btn = new Button
-        {
-            Content = icon,
-            Background = Brushes.Transparent,
-            BorderThickness = new Thickness(0),
-            Cursor = Cursors.Hand,
-            Padding = new Thickness(6, 4, 6, 4),
-            Margin = new Thickness(0, 0, 4, 0),
-            ToolTip = tooltip
-        };
-        // 상대 버튼이 리셋할 수 있도록 등록
-        registerReset?.Invoke(() =>
-        {
-            isActive = false;
-            icon.Text = outline;
-            icon.Foreground = normalColor;
-        });
-        btn.MouseEnter += (_, _) => { if (!isActive) icon.Foreground = hoverBrush; };
-        btn.MouseLeave += (_, _) => { if (!isActive) icon.Foreground = normalColor; };
-        btn.Click += (_, _) =>
-        {
-            isActive = !isActive;
-            icon.Text = isActive ? filled : outline;
-            icon.Foreground = isActive ? activeColor : normalColor;
-
-            // 상호 배타: 활성화 시 반대쪽 리셋
-            if (isActive) resetSibling?.Invoke();
-
-            // 피드백 상태 저장
-            if (message != null)
-            {
-                try
-                {
-                    var feedback = isActive ? feedbackType : null;
-                    var session = ChatSession;
-                    if (session != null)
-                    {
-                        lock (_convLock)
-                        {
-                            session.UpdateMessageFeedback(_activeTab, message, feedback, _storage);
-                            _currentConversation = session.CurrentConversation;
-                        }
-                    }
-                    else
-                    {
-                        message.Feedback = feedback;
-                        ChatConversation? conv;
-                        lock (_convLock) conv = _currentConversation;
-                        if (conv != null) _storage.Save(conv);
-                    }
-                }
-                catch { }
-            }
-
-            // 바운스 애니메이션
-            var scale = (ScaleTransform)icon.RenderTransform;
-            var bounce = new DoubleAnimation(1.3, 1.0, TimeSpan.FromMilliseconds(250))
-            { EasingFunction = new ElasticEase { EasingMode = EasingMode.EaseOut, Oscillations = 1, Springiness = 5 } };
-            scale.BeginAnimation(ScaleTransform.ScaleXProperty, bounce);
-            scale.BeginAnimation(ScaleTransform.ScaleYProperty, bounce);
-        };
-        return btn;
-    }
-
-    /// <summary>좋아요/싫어요 버튼을 상호 배타로 연결하여 추가</summary>
-    private void AddLinkedFeedbackButtons(StackPanel actionBar, Brush btnColor, ChatMessage? message)
-    {
-        // resetSibling는 나중에 설정되므로 Action 래퍼로 간접 참조
-        Action? resetLikeAction = null;
-        Action? resetDislikeAction = null;
-
-        var likeBtn = CreateFeedbackButton("\uE8E1", "\uEB51", "좋아요", btnColor,
-            new SolidColorBrush(Color.FromRgb(0x38, 0xA1, 0x69)), message, "like",
-            resetSibling: () => resetDislikeAction?.Invoke(),
-            registerReset: reset => resetLikeAction = reset);
-        var dislikeBtn = CreateFeedbackButton("\uE8E0", "\uEB50", "싫어요", btnColor,
-            new SolidColorBrush(Color.FromRgb(0xE5, 0x3E, 0x3E)), message, "dislike",
-            resetSibling: () => resetLikeAction?.Invoke(),
-            registerReset: reset => resetDislikeAction = reset);
-
-        actionBar.Children.Add(likeBtn);
-        actionBar.Children.Add(dislikeBtn);
-    }
-
-    private TextBlock? CreateAssistantMessageMetaText(ChatMessage? message)
-    {
-        if (message == null)
-            return null;
-
-        var parts = new List<string>();
-        if (message.ResponseElapsedMs is > 0)
-        {
-            var elapsedMs = message.ResponseElapsedMs.Value;
-            parts.Add(elapsedMs < 1000
-                ? $"{elapsedMs}ms"
-                : $"{(elapsedMs / 1000.0):0.0}s");
-        }
-
-        if (message.PromptTokens > 0 || message.CompletionTokens > 0)
-        {
-            var totalTokens = message.PromptTokens + message.CompletionTokens;
-            parts.Add($"{FormatTokenCount(totalTokens)} tokens");
-        }
-
-        if (parts.Count == 0)
-            return null;
-
-        return new TextBlock
-        {
-            Text = string.Join("  ·  ", parts),
-            FontSize = 9.75,
-            Foreground = TryFindResource("SecondaryText") as Brush ?? Brushes.Gray,
-            HorizontalAlignment = HorizontalAlignment.Left,
-            Margin = new Thickness(4, 2, 0, 0),
-            Opacity = 0.72,
-        };
-    }
-
-    // ─── 메시지 등장 애니메이션 ──────────────────────────────────────────
-
-    private static void ApplyMessageEntryAnimation(FrameworkElement element)
-    {
-        element.Opacity = 0;
-        element.RenderTransform = new TranslateTransform(0, 16);
-        element.BeginAnimation(UIElement.OpacityProperty,
-            new DoubleAnimation(0, 1, TimeSpan.FromMilliseconds(350))
-            { EasingFunction = new CubicEase { EasingMode = EasingMode.EaseOut } });
-        ((TranslateTransform)element.RenderTransform).BeginAnimation(
-            TranslateTransform.YProperty,
-            new DoubleAnimation(16, 0, TimeSpan.FromMilliseconds(400))
-            { EasingFunction = new CubicEase { EasingMode = EasingMode.EaseOut } });
-    }
-
-    // ─── 메시지 편집 ──────────────────────────────────────────────────────
-
-    private bool _isEditing; // 편집 모드 중복 방지
-
-    private void EnterEditMode(StackPanel wrapper, string originalText)
-    {
-        if (_isStreaming || _isEditing) return;
-        _isEditing = true;
-
-        // wrapper 위치(인덱스) 기억
-        var idx = MessagePanel.Children.IndexOf(wrapper);
-        if (idx < 0) { _isEditing = false; return; }
-
-        // 편집 UI 생성
-        var editPanel = new StackPanel
-        {
-            HorizontalAlignment = HorizontalAlignment.Right,
-            MaxWidth = 540,
-            Margin = wrapper.Margin,
-        };
-
-        var editBox = new TextBox
-        {
-            Text = originalText,
-            FontSize = 13.5,
-            Foreground = TryFindResource("PrimaryText") as Brush ?? Brushes.White,
-            Background = TryFindResource("ItemBackground") as Brush ?? Brushes.DarkGray,
-            CaretBrush = TryFindResource("AccentColor") as Brush ?? Brushes.Blue,
-            BorderBrush = TryFindResource("AccentColor") as Brush ?? Brushes.Blue,
-            BorderThickness = new Thickness(1.5),
-            Padding = new Thickness(14, 10, 14, 10),
-            TextWrapping = TextWrapping.Wrap,
-            AcceptsReturn = false,
-            MaxHeight = 200,
-            VerticalScrollBarVisibility = ScrollBarVisibility.Auto,
-        };
-        // 둥근 모서리
-        var editBorder = new Border
-        {
-            CornerRadius = new CornerRadius(14),
-            Child = editBox,
-            ClipToBounds = true,
-        };
-        editPanel.Children.Add(editBorder);
-
-        // 버튼 바
-        var btnBar = new StackPanel
-        {
-            Orientation = Orientation.Horizontal,
-            HorizontalAlignment = HorizontalAlignment.Right,
-            Margin = new Thickness(0, 6, 0, 0),
-        };
-
-        var accentBrush = TryFindResource("AccentColor") as Brush ?? Brushes.Blue;
-        var secondaryBrush = TryFindResource("SecondaryText") as Brush ?? Brushes.Gray;
-
-        // 취소 버튼
-        var cancelBtn = new Button
-        {
-            Content = new TextBlock { Text = "취소", FontSize = 12, Foreground = secondaryBrush },
-            Background = Brushes.Transparent,
-            BorderThickness = new Thickness(0),
-            Cursor = Cursors.Hand,
-            Padding = new Thickness(12, 5, 12, 5),
-            Margin = new Thickness(0, 0, 6, 0),
-        };
-        cancelBtn.Click += (_, _) =>
-        {
-            _isEditing = false;
-            if (idx >= 0 && idx < MessagePanel.Children.Count)
-                MessagePanel.Children[idx] = wrapper; // 원래 버블 복원
-        };
-        btnBar.Children.Add(cancelBtn);
-
-        // 전송 버튼
-        var sendBtn = new Button
-        {
-            Cursor = Cursors.Hand,
-            Padding = new Thickness(0),
-        };
-        sendBtn.Template = (ControlTemplate)System.Windows.Markup.XamlReader.Parse(
-            "<ControlTemplate xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation' TargetType='Button'>" +
-            "<Border Background='" + (accentBrush is SolidColorBrush sb ? sb.Color.ToString() : "#4B5EFC") + "' CornerRadius='8' Padding='12,5,12,5'>" +
-            "<TextBlock Text='전송' FontSize='12' Foreground='White' HorizontalAlignment='Center'/>" +
-            "</Border></ControlTemplate>");
-        sendBtn.Click += (_, _) =>
-        {
-            var newText = editBox.Text.Trim();
-            if (!string.IsNullOrEmpty(newText))
-                _ = SubmitEditAsync(idx, newText);
-        };
-        btnBar.Children.Add(sendBtn);
-
-        editPanel.Children.Add(btnBar);
-
-        // 기존 wrapper → editPanel 교체
-        MessagePanel.Children[idx] = editPanel;
-
-        // Enter 키로도 전송
-        editBox.KeyDown += (_, ke) =>
-        {
-            if (ke.Key == Key.Enter && Keyboard.Modifiers == ModifierKeys.None)
-            {
-                ke.Handled = true;
-                var newText = editBox.Text.Trim();
-                if (!string.IsNullOrEmpty(newText))
-                    _ = SubmitEditAsync(idx, newText);
-            }
-            if (ke.Key == Key.Escape)
-            {
-                ke.Handled = true;
-                _isEditing = false;
-                if (idx >= 0 && idx < MessagePanel.Children.Count)
-                    MessagePanel.Children[idx] = wrapper;
-            }
-        };
-
-        editBox.Focus();
-        editBox.SelectAll();
-    }
-
-    private async Task SubmitEditAsync(int bubbleIndex, string newText)
-    {
-        _isEditing = false;
-        if (_isStreaming) return;
-
-        ChatConversation conv;
-        lock (_convLock)
-        {
-            if (_currentConversation == null) return;
-            conv = _currentConversation;
-        }
-
-        // bubbleIndex에 해당하는 user 메시지 찾기
-        // UI의 children 중 user 메시지가 아닌 것(system)은 스킵됨
-        // 데이터 모델에서 해당 위치의 user 메시지 찾기
-        int userMsgIdx = -1;
-        int uiIdx = 0;
-        lock (_convLock)
-        {
-            for (int i = 0; i < conv.Messages.Count; i++)
-            {
-                if (conv.Messages[i].Role == "system") continue;
-                if (uiIdx == bubbleIndex)
-                {
-                    userMsgIdx = i;
-                    break;
-                }
-                uiIdx++;
-            }
-        }
-
-        if (userMsgIdx < 0) return;
-
-        // 데이터 모델에서 편집된 메시지 이후 모두 제거
-        lock (_convLock)
-        {
-            var session = ChatSession;
-            if (session != null)
-            {
-                session.UpdateUserMessageAndTrim(_activeTab, userMsgIdx, newText, _storage);
-                _currentConversation = session.CurrentConversation;
-                conv = _currentConversation!;
-            }
-            else
-            {
-                conv.Messages[userMsgIdx].Content = newText;
-                while (conv.Messages.Count > userMsgIdx + 1)
-                    conv.Messages.RemoveAt(conv.Messages.Count - 1);
-            }
-        }
-
-        RenderMessages(preserveViewport: true);
-        AutoScrollIfNeeded();
-
-        // AI 재응답
-        await SendRegenerateAsync(conv);
-        try { if (ChatSession == null) _storage.Save(conv); } catch (Exception ex) { Services.LogService.Debug($"대화 저장 실패: {ex.Message}"); }
-        RefreshConversationList();
-    }
 
     // ─── 스트리밍 커서 깜빡임 + AI 아이콘 펄스 ────────────────────────────