AX Agent 하단 작업바 렌더 구조 분리 및 문서 갱신

- ChatWindow.FooterPresentation.cs를 추가해 폴더 바, 선택 프리셋 안내, Git 브랜치 팝업 렌더를 메인 창 코드에서 분리함

- ChatWindow.xaml.cs는 대화 흐름과 런타임 orchestration 중심으로 정리해 claw-code 기준 footer presentation 개선 기반을 마련함

- README.md와 docs/DEVELOPMENT.md에 2026-04-06 08:12 (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

@@ -1771,37 +1771,6 @@ public partial class ChatWindow : Window
         }
     }
 
-    private void UpdateFolderBar()
-    {
-        if (FolderBar == null) return;
-        if (_activeTab == "Chat")
-        {
-            FolderBar.Visibility = Visibility.Collapsed;
-            UpdateGitBranchUi(null, "", "", "", "", Visibility.Collapsed);
-            RefreshContextUsageVisual();
-            return;
-        }
-        FolderBar.Visibility = Visibility.Visible;
-        var folder = GetCurrentWorkFolder();
-        if (!string.IsNullOrEmpty(folder))
-        {
-            FolderPathLabel.Text = folder;
-            FolderPathLabel.ToolTip = folder;
-        }
-        else
-        {
-            FolderPathLabel.Text = "폴더를 선택하세요";
-            FolderPathLabel.ToolTip = null;
-        }
-        // 대화별 설정 복원 (없으면 전역 기본값)
-        LoadConversationSettings();
-        LoadCompactionMetricsFromConversation();
-        UpdatePermissionUI();
-        UpdateDataUsageUI();
-        RefreshContextUsageVisual();
-        ScheduleGitBranchRefresh();
-    }
-
     /// <summary>현재 대화의 개별 설정을 로드합니다. null이면 전역 기본값 사용.</summary>
     private void LoadConversationSettings()
     {
@@ -1945,11 +1914,6 @@ public partial class ChatWindow : Window
         _folderDataUsage = GetAutomaticFolderDataUsage();
     }
 
-    private void UpdateDataUsageUI()
-    {
-        _folderDataUsage = GetAutomaticFolderDataUsage();
-    }
-
     private string GetAutomaticFolderDataUsage()
         => _activeTab switch
         {
@@ -3398,48 +3362,6 @@ public partial class ChatWindow : Window
         UpdateSelectedPresetGuide(conversation);
     }
 
-    private void UpdateSelectedPresetGuide(ChatConversation? conversation = null)
-    {
-        if (SelectedPresetGuide == null || SelectedPresetGuideTitle == null || SelectedPresetGuideDesc == null)
-            return;
-
-        if (string.Equals(_activeTab, "Code", StringComparison.OrdinalIgnoreCase))
-        {
-            SelectedPresetGuide.Visibility = Visibility.Collapsed;
-            SelectedPresetGuideTitle.Text = "";
-            SelectedPresetGuideDesc.Text = "";
-            return;
-        }
-
-        conversation ??= _currentConversation;
-        var category = conversation?.Category?.Trim();
-        if (string.IsNullOrWhiteSpace(category))
-        {
-            SelectedPresetGuide.Visibility = Visibility.Collapsed;
-            SelectedPresetGuideTitle.Text = "";
-            SelectedPresetGuideDesc.Text = "";
-            return;
-        }
-
-        var preset = Services.PresetService.GetByTabWithCustom(_activeTab, _settings.Settings.Llm.CustomPresets)
-            .FirstOrDefault(p => string.Equals(p.Category?.Trim(), category, StringComparison.OrdinalIgnoreCase));
-        if (preset == null)
-        {
-            SelectedPresetGuide.Visibility = Visibility.Collapsed;
-            SelectedPresetGuideTitle.Text = "";
-            SelectedPresetGuideDesc.Text = "";
-            return;
-        }
-
-        SelectedPresetGuideTitle.Text = string.Equals(_activeTab, "Cowork", StringComparison.OrdinalIgnoreCase)
-            ? $"선택된 작업 유형 · {preset.Label}"
-            : $"선택된 대화 주제 · {preset.Label}";
-        SelectedPresetGuideDesc.Text = string.IsNullOrWhiteSpace(preset.Description)
-            ? (preset.Placeholder ?? "")
-            : preset.Description;
-        SelectedPresetGuide.Visibility = Visibility.Visible;
-    }
-
     // ─── 메시지 렌더링 ───────────────────────────────────────────────────
 
     private const int TimelineRenderPageSize = 180;
@@ -17759,32 +17681,6 @@ public partial class ChatWindow : Window
         }
     }
 
-    private void UpdateGitBranchUi(string? branchName, string filesText, string addedText, string deletedText, string tooltip, Visibility visibility)
-    {
-        Dispatcher.Invoke(() =>
-        {
-            _currentGitBranchName = branchName;
-            _currentGitTooltip = tooltip;
-
-            if (BtnGitBranch != null)
-            {
-                BtnGitBranch.Visibility = visibility;
-                BtnGitBranch.ToolTip = string.IsNullOrWhiteSpace(tooltip) ? "현재 Git 브랜치 상태" : tooltip;
-            }
-
-            if (GitBranchLabel != null)
-                GitBranchLabel.Text = string.IsNullOrWhiteSpace(branchName) ? "브랜치 없음" : branchName;
-            if (GitBranchFilesText != null)
-                GitBranchFilesText.Text = filesText;
-            if (GitBranchAddedText != null)
-                GitBranchAddedText.Text = addedText;
-            if (GitBranchDeletedText != null)
-                GitBranchDeletedText.Text = deletedText;
-            if (GitBranchSeparator != null)
-                GitBranchSeparator.Visibility = visibility;
-        });
-    }
-
     private static int ParseGitShortStat(string text, string unit)
     {
         if (string.IsNullOrWhiteSpace(text))
@@ -17810,332 +17706,6 @@ public partial class ChatWindow : Window
         return null;
     }
 
-    private void BuildGitBranchPopup()
-    {
-        if (GitBranchItems == null)
-            return;
-
-        GitBranchItems.Children.Clear();
-
-        var gitRoot = _currentGitRoot ?? ResolveGitRoot(GetCurrentWorkFolder());
-        var branchName = _currentGitBranchName ?? "detached";
-        var tooltip = _currentGitTooltip ?? "";
-        var fileText = GitBranchFilesText?.Text ?? "";
-        var addedText = GitBranchAddedText?.Text ?? "";
-        var deletedText = GitBranchDeletedText?.Text ?? "";
-        var query = (_gitBranchSearchText ?? "").Trim();
-        var accentBrush = TryFindResource("AccentColor") as Brush ?? Brushes.CornflowerBlue;
-        var primaryText = TryFindResource("PrimaryText") as Brush ?? Brushes.White;
-        var secondaryText = TryFindResource("SecondaryText") as Brush ?? Brushes.Gray;
-
-        GitBranchItems.Children.Add(CreatePopupSummaryStrip(new[]
-        {
-            ("브랜치", string.IsNullOrWhiteSpace(branchName) ? "없음" : branchName, "#F8FAFC", "#E2E8F0", "#475569"),
-            ("파일", string.IsNullOrWhiteSpace(fileText) ? "0" : fileText, "#EFF6FF", "#BFDBFE", "#1D4ED8"),
-            ("최근", _recentGitBranches.Count.ToString(), "#F5F3FF", "#DDD6FE", "#6D28D9"),
-        }));
-        GitBranchItems.Children.Add(CreatePopupSectionLabel("현재 브랜치", new Thickness(8, 6, 8, 4)));
-        GitBranchItems.Children.Add(CreatePopupMenuRow(
-            "\uE943",
-            branchName,
-            string.IsNullOrWhiteSpace(fileText) ? "현재 브랜치" : fileText,
-            true,
-            accentBrush,
-            secondaryText,
-            primaryText,
-            () => { }));
-
-        if (!string.IsNullOrWhiteSpace(addedText) || !string.IsNullOrWhiteSpace(deletedText))
-        {
-            var stats = new StackPanel
-            {
-                Orientation = Orientation.Horizontal,
-                Margin = new Thickness(8, 2, 8, 8),
-            };
-            if (!string.IsNullOrWhiteSpace(addedText))
-                stats.Children.Add(CreateMetricPill(addedText, "#16A34A"));
-            if (!string.IsNullOrWhiteSpace(deletedText))
-                stats.Children.Add(CreateMetricPill(deletedText, "#DC2626"));
-            GitBranchItems.Children.Add(stats);
-        }
-
-        if (!string.IsNullOrWhiteSpace(gitRoot))
-        {
-            GitBranchItems.Children.Add(CreatePopupSectionLabel("저장소", new Thickness(8, 6, 8, 4)));
-            GitBranchItems.Children.Add(CreatePopupMenuRow(
-                "\uED25",
-                System.IO.Path.GetFileName(gitRoot.TrimEnd('\\', '/')),
-                gitRoot,
-                false,
-                accentBrush,
-                secondaryText,
-                primaryText,
-                () => { }));
-        }
-
-        if (!string.IsNullOrWhiteSpace(_currentGitUpstreamStatus))
-        {
-            GitBranchItems.Children.Add(CreatePopupMenuRow(
-                "\uE8AB",
-                "업스트림",
-                _currentGitUpstreamStatus!,
-                false,
-                accentBrush,
-                secondaryText,
-                primaryText,
-                () => { }));
-        }
-
-        GitBranchItems.Children.Add(CreatePopupSectionLabel("빠른 작업", new Thickness(8, 10, 8, 4)));
-        GitBranchItems.Children.Add(CreatePopupMenuRow(
-            "\uE8C8",
-            "상태 요약 복사",
-            "브랜치, 변경 파일, 추가/삭제 라인 복사",
-            false,
-            accentBrush,
-            secondaryText,
-            primaryText,
-            () =>
-            {
-                try { Clipboard.SetText(tooltip); } catch { }
-                GitBranchPopup.IsOpen = false;
-            }));
-
-        GitBranchItems.Children.Add(CreatePopupMenuRow(
-            "\uE72B",
-            "새로고침",
-            "Git 상태를 다시 조회합니다",
-            false,
-            accentBrush,
-            secondaryText,
-            primaryText,
-            async () =>
-            {
-                await RefreshGitBranchStatusAsync();
-                BuildGitBranchPopup();
-            }));
-
-        var filteredBranches = _currentGitBranches
-            .Where(branch => string.IsNullOrWhiteSpace(query)
-                || branch.Contains(query, StringComparison.OrdinalIgnoreCase))
-            .Take(20)
-            .ToList();
-
-        var recentBranches = _recentGitBranches
-            .Where(branch => _currentGitBranches.Any(current => string.Equals(current, branch, StringComparison.OrdinalIgnoreCase)))
-            .Where(branch => string.IsNullOrWhiteSpace(query)
-                || branch.Contains(query, StringComparison.OrdinalIgnoreCase))
-            .Take(5)
-            .ToList();
-
-        if (recentBranches.Count > 0)
-        {
-            var recentSectionLabel = string.IsNullOrWhiteSpace(query)
-                ? $"최근 전환 · {recentBranches.Count}"
-                : $"최근 전환 · {recentBranches.Count}";
-            GitBranchItems.Children.Add(CreatePopupSectionLabel(recentSectionLabel, new Thickness(8, 10, 8, 4)));
-
-            foreach (var branch in recentBranches)
-            {
-                var isCurrent = string.Equals(branch, branchName, StringComparison.OrdinalIgnoreCase);
-                GitBranchItems.Children.Add(CreatePopupMenuRow(
-                    isCurrent ? "\uE73E" : "\uE8FD",
-                    branch,
-                    isCurrent ? "현재 브랜치" : "최근 사용 브랜치",
-                    isCurrent,
-                    accentBrush,
-                    secondaryText,
-                    primaryText,
-                    isCurrent ? null : () => _ = SwitchGitBranchAsync(branch)));
-            }
-        }
-
-        if (_currentGitBranches.Count > 0)
-        {
-            var branchSectionLabel = string.IsNullOrWhiteSpace(query)
-                ? $"브랜치 전환 · {_currentGitBranches.Count}"
-                : $"브랜치 전환 · {filteredBranches.Count}/{_currentGitBranches.Count}";
-            GitBranchItems.Children.Add(CreatePopupSectionLabel(branchSectionLabel, new Thickness(8, 10, 8, 4)));
-
-            foreach (var branch in filteredBranches)
-            {
-                if (recentBranches.Any(recent => string.Equals(recent, branch, StringComparison.OrdinalIgnoreCase)))
-                    continue;
-
-                var isCurrent = string.Equals(branch, branchName, StringComparison.OrdinalIgnoreCase);
-                GitBranchItems.Children.Add(CreatePopupMenuRow(
-                    isCurrent ? "\uE73E" : "\uE943",
-                    branch,
-                    isCurrent ? "현재 브랜치" : "이 브랜치로 전환",
-                    isCurrent,
-                    accentBrush,
-                    secondaryText,
-                    primaryText,
-                    isCurrent ? null : () => _ = SwitchGitBranchAsync(branch)));
-            }
-
-            if (!string.IsNullOrWhiteSpace(query) && filteredBranches.Count == 0)
-            {
-                GitBranchItems.Children.Add(new TextBlock
-                {
-                    Text = "검색 결과가 없습니다.",
-                    FontSize = 11.5,
-                    Foreground = secondaryText,
-                    Margin = new Thickness(10, 6, 10, 10),
-                });
-            }
-        }
-
-        GitBranchItems.Children.Add(CreatePopupSectionLabel("브랜치 작업", new Thickness(8, 10, 8, 4)));
-        GitBranchItems.Children.Add(CreatePopupMenuRow(
-            "\uE710",
-            "새 브랜치 생성",
-            "현재 작업 기준으로 새 브랜치를 만들고 전환합니다",
-            false,
-            accentBrush,
-            secondaryText,
-            primaryText,
-            () => _ = CreateGitBranchAsync()));
-    }
-
-    private TextBlock CreatePopupSectionLabel(string text, Thickness? margin = null)
-    {
-        return new TextBlock
-        {
-            Text = text,
-            FontSize = 10.5,
-            FontWeight = FontWeights.SemiBold,
-            Foreground = TryFindResource("SecondaryText") as Brush ?? Brushes.Gray,
-            Margin = margin ?? new Thickness(8, 8, 8, 4),
-        };
-    }
-
-    private UIElement CreatePopupSummaryStrip(IEnumerable<(string Label, string Value, string BgHex, string BorderHex, string FgHex)> items)
-    {
-        var wrap = new WrapPanel
-        {
-            Margin = new Thickness(8, 6, 8, 6),
-        };
-
-        foreach (var item in items)
-        {
-            wrap.Children.Add(CreateMetricPill($"{item.Label} {item.Value}", item.FgHex, item.BgHex, item.BorderHex));
-        }
-
-        return wrap;
-    }
-
-    private Border CreateMetricPill(string text, string colorHex)
-        => CreateMetricPill(text, colorHex, $"{colorHex}18", $"{colorHex}44");
-
-    private Border CreateMetricPill(string text, string colorHex, string bgHex, string borderHex)
-    {
-        return new Border
-        {
-            Background = BrushFromHex(bgHex),
-            BorderBrush = BrushFromHex(borderHex),
-            BorderThickness = new Thickness(1),
-            CornerRadius = new CornerRadius(999),
-            Padding = new Thickness(8, 3, 8, 3),
-            Margin = new Thickness(0, 0, 6, 0),
-            Child = new TextBlock
-            {
-                Text = text,
-                FontSize = 10.5,
-                FontWeight = FontWeights.SemiBold,
-                Foreground = BrushFromHex(colorHex),
-            }
-        };
-    }
-
-    private Border CreateFlatPopupRow(string icon, string title, string description, string colorHex, bool clickable, Action? onClick)
-    {
-        var primaryText = TryFindResource("PrimaryText") as Brush ?? Brushes.White;
-        var secondaryText = TryFindResource("SecondaryText") as Brush ?? Brushes.Gray;
-        var hoverBrush = TryFindResource("ItemHoverBackground") as Brush ?? Brushes.LightGray;
-        var borderColor = TryFindResource("BorderColor") as Brush ?? Brushes.Gray;
-
-        var border = new Border
-        {
-            Background = Brushes.Transparent,
-            BorderBrush = borderColor,
-            BorderThickness = new Thickness(0, 0, 0, 1),
-            Padding = new Thickness(8, 9, 8, 9),
-            Cursor = clickable ? Cursors.Hand : Cursors.Arrow,
-            Focusable = clickable,
-        };
-        KeyboardNavigation.SetIsTabStop(border, clickable);
-
-        var grid = new Grid();
-        grid.ColumnDefinitions.Add(new ColumnDefinition { Width = GridLength.Auto });
-        grid.ColumnDefinitions.Add(new ColumnDefinition { Width = new GridLength(1, GridUnitType.Star) });
-        grid.ColumnDefinitions.Add(new ColumnDefinition { Width = GridLength.Auto });
-
-        grid.Children.Add(new TextBlock
-        {
-            Text = icon,
-            FontFamily = new FontFamily("Segoe MDL2 Assets"),
-            FontSize = 11,
-            Foreground = BrushFromHex(colorHex),
-            VerticalAlignment = VerticalAlignment.Top,
-            Margin = new Thickness(0, 1, 10, 0),
-        });
-
-        var textStack = new StackPanel();
-        textStack.Children.Add(new TextBlock
-        {
-            Text = title,
-            FontSize = 12,
-            FontWeight = FontWeights.SemiBold,
-            Foreground = primaryText,
-        });
-        if (!string.IsNullOrWhiteSpace(description))
-        {
-            textStack.Children.Add(new TextBlock
-            {
-                Text = description,
-                FontSize = 10.5,
-                Foreground = secondaryText,
-                Margin = new Thickness(0, 2, 0, 0),
-                TextWrapping = TextWrapping.Wrap,
-            });
-        }
-        Grid.SetColumn(textStack, 1);
-        grid.Children.Add(textStack);
-        if (clickable)
-        {
-            var chevron = new TextBlock
-            {
-                Text = "\uE76C",
-                FontFamily = new FontFamily("Segoe MDL2 Assets"),
-                FontSize = 10,
-                Foreground = secondaryText,
-                VerticalAlignment = VerticalAlignment.Center,
-                Margin = new Thickness(8, 0, 0, 0),
-            };
-            Grid.SetColumn(chevron, 2);
-            grid.Children.Add(chevron);
-        }
-        border.Child = grid;
-
-        if (clickable && onClick != null)
-        {
-            border.MouseEnter += (_, _) => border.Background = hoverBrush;
-            border.MouseLeave += (_, _) => border.Background = Brushes.Transparent;
-            border.MouseLeftButtonUp += (_, _) => onClick();
-            border.KeyDown += (_, ke) =>
-            {
-                if (ke.Key is Key.Enter or Key.Space)
-                {
-                    ke.Handled = true;
-                    onClick();
-                }
-            };
-        }
-
-        return border;
-    }
-
     private async Task SwitchGitBranchAsync(string branchName)
     {
         if (string.IsNullOrWhiteSpace(branchName) || string.IsNullOrWhiteSpace(_currentGitRoot))