Refactor settings window UI and theming

Improve theming and layout for the Settings window and related services.

- MaterialSurfaceService: add special material parameters for SettingsWindowBackground (lower alpha, no blur) and avoid hot-switching real backdrops for non-settings windows.
- GlassEffectService: add AdaptiveSettingsWindowTintBrush + ResolveSettingsWindowTintAlpha to provide optional content tinting tied to system material mode.
- SettingsWindowService: refactor theme application into ApplyThemeVariantAndResources, ensure settings window material is applied at show/activate times, and tidy theme/resource application flow.
- SettingsWindow.axaml / .axaml.cs: restructure title bar (separate Grid.Row=0 border) and FANavigationView host, add pane-footer toggle button for :minimal layout, use dynamic corner radius resource, and update toggle/visibility/icon logic and responsive layout code.
- SettingsPages: remove some IconText usages and adjust margins; use DesignCornerRadiusLg for update card corner radius.
- Add NuGet.Config to set local globalPackagesFolder and ignore .nuget/packages in .gitignore.

These changes aim to improve visuals, avoid backdrop overdraw, and make the settings window behavior consistent across themes and layouts.

.gitignore

@@ -6,6 +6,9 @@
 # dotenv files
 .env
 
+# Local NuGet global packages (NuGet.Config globalPackagesFolder)
+.nuget/packages/
+
 # User-specific files
 *.rsuser
 *.suo

LanMountainDesktop/Services/AppearanceThemeService.cs

@@ -353,6 +353,26 @@ internal sealed class MaterialSurfaceService : IMaterialSurfaceService
         MaterialSurfaceRole role,
         bool isNightMode)
     {
+        // Settings 根层（如 RootGrid）叠在 Transparent + Mica/Acrylic 上：过高 alpha 会完全盖住系统 backdrop。
+        // 保持非 None 下较低 alpha；None 仍用不透明白底等价。BlurRadius=0（由 DWM 提供模糊）。
+        if (role == MaterialSurfaceRole.SettingsWindowBackground)
+        {
+            return materialMode switch
+            {
+                ThemeAppearanceValues.MaterialAcrylic => (
+                    0.20,
+                    0.14,
+                    isNightMode ? (byte)0x8E : (byte)0x96,
+                    0),
+                ThemeAppearanceValues.MaterialMica => (
+                    0.14,
+                    0.08,
+                    isNightMode ? (byte)0x9E : (byte)0xA6,
+                    0),
+                _ => (0.08, 0.05, (byte)0xFF, 0)
+            };
+        }
+
         var isOverlay = role is MaterialSurfaceRole.DockBackground or MaterialSurfaceRole.StatusBarBackground or MaterialSurfaceRole.OverlayPanel;
         return materialMode switch
         {
@@ -491,7 +511,8 @@ internal sealed class AppearanceThemeService : IAppearanceThemeService, IDisposa
 
         // Avoid hot-switching real backdrops on already-visible windows. This has been
         // a stability hotspot when users flip theme source/material at runtime.
-        if (window.IsVisible)
+        // SettingsWindowBackground 是唯一需要材质与资源同步热切换的宿主角色；其它窗口仍保持「仅创建时」应用以降低风险。
+        if (window.IsVisible && role != MaterialSurfaceRole.SettingsWindowBackground)
         {
             return;
         }

LanMountainDesktop/Services/GlassEffectService.cs

@@ -69,6 +69,15 @@ public static class GlassEffectService
         resources["AdaptiveWindowBackgroundBrush"] = new SolidColorBrush(windowSurface.BackgroundColor);
         resources["AdaptiveWindowBorderBrush"] = new SolidColorBrush(windowSurface.BorderColor);
         resources["AdaptiveSettingsWindowBackgroundBrush"] = new SolidColorBrush(settingsWindowSurface.BackgroundColor);
+        // 可选：叠在内容区上的可读性 tint（半透明）；不改变 AdaptiveSettingsWindowBackgroundBrush 的语义权重，供 P1 绑定内容层。
+        var settingsTintBase = settingsWindowSurface.BackgroundColor;
+        var settingsTintAlpha = ResolveSettingsWindowTintAlpha(context);
+        resources["AdaptiveSettingsWindowTintBrush"] = new SolidColorBrush(
+            Color.FromArgb(
+                settingsTintAlpha,
+                settingsTintBase.R,
+                settingsTintBase.G,
+                settingsTintBase.B));
         resources["AdaptiveSettingsWindowBorderBrush"] = new SolidColorBrush(settingsWindowSurface.BorderColor);
         resources["AdaptiveDockBackgroundBrush"] = new SolidColorBrush(dockSurface.BackgroundColor);
         resources["AdaptiveDockBorderBrush"] = new SolidColorBrush(dockSurface.BorderColor);
@@ -100,4 +109,16 @@ public static class GlassEffectService
         resources["AdaptiveDesktopComponentHostOpacity"] = desktopComponentSurface.Opacity;
         resources["AdaptiveStatusBarComponentHostOpacity"] = statusBarComponentSurface.Opacity;
     }
+
+    /// <summary>可选内容叠层 alpha，与设置窗表面色相一致；None 为 0 避免重复染色。</summary>
+    private static byte ResolveSettingsWindowTintAlpha(ThemeColorContext context)
+    {
+        var mode = ThemeAppearanceValues.NormalizeSystemMaterialMode(context.SystemMaterialMode);
+        return mode switch
+        {
+            ThemeAppearanceValues.MaterialAcrylic => context.IsNightMode ? (byte)0x58 : (byte)0x4C,
+            ThemeAppearanceValues.MaterialMica => context.IsNightMode ? (byte)0x50 : (byte)0x44,
+            _ => (byte)0x00
+        };
+    }
 }

LanMountainDesktop/Services/Settings/SettingsWindowService.cs

@@ -71,7 +71,7 @@ internal sealed class SettingsWindowService : ISettingsWindowService
         _window ??= CreateWindow();
         var appearanceSnapshot = _appearanceThemeService.GetCurrent();
         _window.ApplyChromeMode(appearanceSnapshot.UseSystemChrome);
-        ApplyTheme(_window);
+        ApplyThemeVariantAndResources(_window);
 
         var targetPageId = request.PageId ?? _window.ViewModel.CurrentPageId;
         _window.ReloadPages(targetPageId);
@@ -79,6 +79,7 @@ internal sealed class SettingsWindowService : ISettingsWindowService
         if (!_window.IsVisible)
         {
             CenterWindow(_window, request);
+            _appearanceThemeService.ApplyWindowMaterial(_window, MaterialSurfaceRole.SettingsWindowBackground);
             _window.Show();
             NotifyStateChanged();
             CenterWindowLater(_window, request);
@@ -90,6 +91,7 @@ internal sealed class SettingsWindowService : ISettingsWindowService
             _window.WindowState = WindowState.Normal;
         }
 
+        _appearanceThemeService.ApplyWindowMaterial(_window, MaterialSurfaceRole.SettingsWindowBackground);
         _window.Activate();
     }
 
@@ -113,7 +115,6 @@ internal sealed class SettingsWindowService : ISettingsWindowService
             _pageRegistry,
             _hostApplicationLifecycle,
             useSystemChrome);
-        ApplyTheme(window);
         window.ShowInTaskbar = true;
         window.Closed += (_, _) =>
         {
@@ -285,13 +286,23 @@ internal sealed class SettingsWindowService : ISettingsWindowService
         }, DispatcherPriority.Background);
     }
 
-    private void ApplyTheme(SettingsWindow window)
+    private static void ApplyThemeVariantAndResources(SettingsWindow window, IAppearanceThemeService appearanceThemeService)
     {
-        var appearanceSnapshot = _appearanceThemeService.GetCurrent();
+        var appearanceSnapshot = appearanceThemeService.GetCurrent();
         window.RequestedThemeVariant = appearanceSnapshot.IsNightMode
             ? ThemeVariant.Dark
             : ThemeVariant.Light;
-        _appearanceThemeService.ApplyThemeResources(window.Resources);
+        appearanceThemeService.ApplyThemeResources(window.Resources);
+    }
+
+    private void ApplyThemeVariantAndResources(SettingsWindow window)
+    {
+        ApplyThemeVariantAndResources(window, _appearanceThemeService);
+    }
+
+    private void ApplyTheme(SettingsWindow window)
+    {
+        ApplyThemeVariantAndResources(window, _appearanceThemeService);
         _appearanceThemeService.ApplyWindowMaterial(window, MaterialSurfaceRole.SettingsWindowBackground);
     }
 

LanMountainDesktop/Views/SettingsPages/LauncherSettingsPage.axaml

@@ -1,7 +1,6 @@
 <UserControl xmlns="https://github.com/avaloniaui"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              xmlns:vm="using:LanMountainDesktop.ViewModels"
-             xmlns:controls="using:LanMountainDesktop.Controls"
              xmlns:ui="using:FluentAvalonia.UI.Controls"
              xmlns:fi="using:FluentIcons.Avalonia"
              xmlns:symbol="using:FluentIcons.Common"
@@ -52,10 +51,6 @@
                 </Grid>
             </Border>
 
-            <controls:IconText Icon="Apps"
-                               Text="{Binding AppearanceHeader}"
-                               Margin="0,0,0,4" />
-
             <ui:FASettingsExpander Classes="settings-expander-card"
                                  Header="{Binding AppearanceHeader}"
                                  Description="{Binding AppearanceDescription}"
@@ -76,11 +71,8 @@
                 </ui:FASettingsExpanderItem>
             </ui:FASettingsExpander>
 
-            <controls:IconText Icon="Apps"
-                               Text="{Binding HiddenHeader}"
-                               Margin="0,24,0,4" />
-
             <ui:FASettingsExpander Classes="settings-expander-card"
+                                 Margin="0,24,0,14"
                                  Header="{Binding HiddenHeader}"
                                  Description="{Binding HiddenDescription}"
                                  IsExpanded="True">

LanMountainDesktop/Views/SettingsPages/UpdateSettingsPage.axaml

@@ -10,7 +10,7 @@
         <Style Selector="Border.update-status-card">
             <Setter Property="Padding" Value="24" />
             <Setter Property="Margin" Value="0,0,0,18" />
-            <Setter Property="CornerRadius" Value="24" />
+            <Setter Property="CornerRadius" Value="{DynamicResource DesignCornerRadiusLg}" />
             <Setter Property="Background" Value="{DynamicResource AdaptiveSurfaceRaisedBrush}" />
             <Setter Property="BorderBrush" Value="{DynamicResource AdaptiveGlassPanelBorderBrush}" />
             <Setter Property="BorderThickness" Value="1" />

LanMountainDesktop/Views/SettingsWindow.axaml

@@ -40,10 +40,108 @@
           Classes="settings-scope"
           Background="{DynamicResource AdaptiveSettingsWindowBackgroundBrush}"
           RowDefinitions="Auto,*">
-        <!-- 顶栏布局对齐 SecRandom：左（折叠/品牌/标题）+ 中（透明拖窗区）+ 右（重启 / Windows caption 占位） -->
+        <!-- ClassIsland SettingsWindowNew：声明顺序为先 FANavigationView（Grid.Row=1）再顶栏 Border（Grid.Row=0）；Row 仍为 0=标题栏、1=导航宿主，最终叠放不变。 -->
+
+        <ui:FANavigationView x:Name="RootNavigationView"
+                           Grid.Row="1"
+                           Margin="0"
+                           Background="Transparent"
+                           PaneDisplayMode="Auto"
+                           OpenPaneLength="283"
+                           IsSettingsVisible="False"
+                           IsBackButtonVisible="False"
+                           SelectionChanged="OnNavigationSelectionChanged">
+            <ui:FANavigationView.PaneFooter>
+                <!-- 仅在 :minimal（IsPaneToggleButtonVisible=False）时由代码显示；与模板内 pane-toggle-button 一致，不用顶栏备胎 -->
+                <StackPanel Orientation="Vertical">
+                    <Button x:Name="PaneFooterToggleButton"
+                            Classes="pane-toggle-button"
+                            Margin="0,-8,0,0"
+                            MinWidth="40"
+                            Width="48"
+                            VerticalAlignment="Bottom"
+                            Click="OnPaneFooterToggleClick">
+                        <Grid>
+                            <fi:FluentIcon x:Name="PaneFooterToggleButtonIcon"
+                                           Icon="Navigation"
+                                           IconVariant="Regular"
+                                           FontSize="16"
+                                           Foreground="{DynamicResource TextFillColorPrimaryBrush}" />
+                        </Grid>
+                    </Button>
+                </StackPanel>
+            </ui:FANavigationView.PaneFooter>
+
+            <ui:FANavigationView.Styles>
+                <Style Selector="ui|FANavigationView#RootNavigationView:minimal">
+                    <Setter Property="IsPaneToggleButtonVisible" Value="False"/>
+                </Style>
+            </ui:FANavigationView.Styles>
+
+            <ui:FANavigationView.Resources>
+                <SolidColorBrush x:Key="NavigationViewContentBackground" Color="Transparent" />
+                <SolidColorBrush x:Key="NavigationViewContentGridBorderBrush" Color="Transparent" />
+            </ui:FANavigationView.Resources>
+
+            <Grid x:Name="SettingsContentGrid"
+                  ColumnDefinitions="*,Auto"
+                  ColumnSpacing="20"
+                  Margin="12,0,16,16">
+                <Grid Grid.Column="0"
+                      RowDefinitions="Auto,*">
+                    <Grid x:Name="PageTitleContainer"
+                          Grid.Row="0"
+                          Classes="page-title-container"
+                          IsVisible="{Binding IsPageTitleVisible}">
+                        <TextBlock x:Name="PageTitleTextBlock"
+                                   Classes="page-title-text"
+                                   Text="{Binding CurrentPageTitle}" />
+                    </Grid>
+
+                    <ui:FAFrame x:Name="ContentFrame"
+                              Grid.Row="1" />
+                </Grid>
+
+                <Border x:Name="DrawerBorder"
+                        Grid.Column="1"
+                        Width="296"
+                        Background="{DynamicResource AdaptiveSurfaceRaisedBrush}"
+                        BorderBrush="{DynamicResource AdaptiveGlassPanelBorderBrush}"
+                        BorderThickness="1"
+                        CornerRadius="{DynamicResource DesignCornerRadiusMd}"
+                        Padding="20"
+                        BoxShadow="0 8 24 #14000000"
+                        IsVisible="{Binding IsDrawerOpen}">
+                    <Grid RowDefinitions="Auto,*"
+                          RowSpacing="16">
+                        <Grid ColumnDefinitions="*,Auto">
+                            <TextBlock x:Name="DrawerTitleTextBlock"
+                                       FontSize="16"
+                                       FontWeight="SemiBold"
+                                       Text="{Binding DrawerTitle}" />
+                            <Button Grid.Column="1"
+                                    Width="32"
+                                    Height="32"
+                                    Padding="0"
+                                    Background="Transparent"
+                                    BorderThickness="0"
+                                    Click="OnCloseDrawerClick">
+                                <fi:FluentIcon Icon="Dismiss"
+                                               IconVariant="Regular" />
+                            </Button>
+                        </Grid>
+
+                        <ContentControl x:Name="DrawerContentHost"
+                                        Grid.Row="1" />
+                    </Grid>
+                </Border>
+            </Grid>
+        </ui:FANavigationView>
+
         <Border x:Name="WindowTitleBarHost"
+                Grid.Row="0"
                 Height="48"
-                Background="Transparent"
+                Background="{DynamicResource SolidBackgroundFillColorBaseBrush}"
                 BorderBrush="{DynamicResource AdaptiveSettingsWindowBorderBrush}"
                 BorderThickness="0,0,0,1">
             <Grid ColumnDefinitions="Auto,*,Auto"
@@ -53,26 +151,11 @@
                             Margin="8,0,8,0"
                             Spacing="8"
                             VerticalAlignment="Center">
-                    <Button x:Name="TogglePaneButton"
-                            Classes="pane-toggle-button"
-                            Margin="-7,-8,-8,-8"
-                            MinWidth="40"
-                            Width="48"
-                            VerticalAlignment="Center"
-                            IsVisible="{Binding !#RootNavigationView.IsPaneToggleButtonVisible}"
-                            Click="OnTogglePaneButtonClick">
-                        <Grid>
-                            <fi:FluentIcon x:Name="TogglePaneButtonIcon"
-                                           Icon="Navigation"
-                                           IconVariant="Regular"
-                                           FontSize="16" />
-                        </Grid>
-                    </Button>
-
                     <fi:FluentIcon x:Name="WindowBrandIcon"
-                                   Margin="0,0,0,0"
                                    Icon="Settings"
                                    IconVariant="Filled"
+                                   FontSize="18"
+                                   Foreground="{DynamicResource TextFillColorPrimaryBrush}"
                                    IsHitTestVisible="False"
                                    VerticalAlignment="Center" />
 
@@ -81,6 +164,7 @@
                                FontWeight="SemiBold"
                                Margin="8,0,0,0"
                                VerticalAlignment="Center"
+                               Foreground="{DynamicResource TextFillColorPrimaryBrush}"
                                IsHitTestVisible="False"
                                Text="{Binding Title}" />
                 </StackPanel>
@@ -119,80 +203,5 @@
                 </StackPanel>
             </Grid>
         </Border>
-
-        <ui:FANavigationView x:Name="RootNavigationView"
-                           Grid.Row="1"
-                           Margin="0"
-                           Background="Transparent"
-                           PaneDisplayMode="Auto"
-                           OpenPaneLength="283"
-                           IsSettingsVisible="False"
-                           IsBackButtonVisible="False"
-                           SelectionChanged="OnNavigationSelectionChanged">
-            <ui:FANavigationView.Styles>
-                <Style Selector="ui|FANavigationView#RootNavigationView:minimal">
-                    <Setter Property="IsPaneToggleButtonVisible" Value="False"/>
-                </Style>
-            </ui:FANavigationView.Styles>
-
-            <ui:FANavigationView.Resources>
-                <SolidColorBrush x:Key="NavigationViewContentBackground" Color="Transparent" />
-                <SolidColorBrush x:Key="NavigationViewContentGridBorderBrush" Color="Transparent" />
-            </ui:FANavigationView.Resources>
-
-            <Grid x:Name="SettingsContentGrid"
-                  ColumnDefinitions="*,Auto"
-                  ColumnSpacing="20"
-                  Margin="12,0,16,16">
-                <Grid Grid.Column="0"
-                      RowDefinitions="Auto,*">
-                    <Grid x:Name="PageTitleContainer"
-                          Grid.Row="0"
-                          Classes="page-title-container"
-                          IsVisible="{Binding IsPageTitleVisible}">
-                        <TextBlock x:Name="PageTitleTextBlock"
-                                   Classes="page-title-text"
-                                   Text="{Binding CurrentPageTitle}" />
-                    </Grid>
-
-                    <ui:FAFrame x:Name="ContentFrame"
-                              Grid.Row="1" />
-                </Grid>
-
-                <Border x:Name="DrawerBorder"
-                        Grid.Column="1"
-                        Width="296"
-                        Background="{DynamicResource AdaptiveSurfaceRaisedBrush}"
-                        BorderBrush="{DynamicResource AdaptiveGlassPanelBorderBrush}"
-                        BorderThickness="1"
-                        CornerRadius="16"
-                        Padding="20"
-                        BoxShadow="0 8 24 #14000000"
-                        IsVisible="{Binding IsDrawerOpen}">
-                    <Grid RowDefinitions="Auto,*"
-                          RowSpacing="16">
-                        <Grid ColumnDefinitions="*,Auto">
-                            <TextBlock x:Name="DrawerTitleTextBlock"
-                                       FontSize="16"
-                                       FontWeight="SemiBold"
-                                       Text="{Binding DrawerTitle}" />
-                            <Button Grid.Column="1"
-                                    Width="32"
-                                    Height="32"
-                                    Padding="0"
-                                    Background="Transparent"
-                                    BorderThickness="0"
-                                    Click="OnCloseDrawerClick">
-                                <fi:FluentIcon Icon="Dismiss"
-                                               IconVariant="Regular" />
-                            </Button>
-                        </Grid>
-
-                        <ContentControl x:Name="DrawerContentHost"
-                                        Grid.Row="1" />
-                    </Grid>
-                </Border>
-            </Grid>
-        </ui:FANavigationView>
     </Grid>
 </faWindowing:FAAppWindow>

LanMountainDesktop/Views/SettingsWindow.axaml.cs

@@ -87,7 +87,8 @@ public partial class SettingsWindow : FAAppWindow, ISettingsPageHostContext
         SyncPendingRestartState();
         SyncTitleText();
         UpdateChromeMetrics();
-        UpdatePaneToggleIcon();
+        UpdatePaneFooterToggleVisibility();
+        UpdatePaneFooterToggleIcon();
         UpdateResponsiveLayout();
         RequestResponsiveLayoutRefresh();
     }
@@ -104,6 +105,7 @@ public partial class SettingsWindow : FAAppWindow, ISettingsPageHostContext
         CloseDrawer();
         RebuildNavigationItems();
         NavigateTo(pageId ?? ViewModel.Pages.FirstOrDefault()?.PageId);
+        UpdatePaneFooterToggleVisibility();
     }
 
     public void RebuildAndNavigateToDevPage()
@@ -266,6 +268,7 @@ public partial class SettingsWindow : FAAppWindow, ISettingsPageHostContext
         ViewModel.IsPageTitleVisible = !descriptor.HidePageTitle;
         TrySelectNavigationItem(descriptor.PageId);
         SyncTitleText();
+        UpdatePaneFooterToggleVisibility();
         UpdateResponsiveLayout();
         RequestResponsiveLayoutRefresh();
         if (!string.Equals(previousPageId, descriptor.PageId, StringComparison.OrdinalIgnoreCase))
@@ -523,7 +526,7 @@ public partial class SettingsWindow : FAAppWindow, ISettingsPageHostContext
         }
     }
 
-    private void OnTogglePaneButtonClick(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
+    private void OnPaneFooterToggleClick(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
     {
         _ = sender;
         _ = e;
@@ -533,7 +536,7 @@ public partial class SettingsWindow : FAAppWindow, ISettingsPageHostContext
         }
 
         RootNavigationView.IsPaneOpen = !RootNavigationView.IsPaneOpen;
-        UpdatePaneToggleIcon();
+        UpdatePaneFooterToggleIcon();
         UpdateResponsiveLayout();
         RequestResponsiveLayoutRefresh();
     }
@@ -544,13 +547,33 @@ public partial class SettingsWindow : FAAppWindow, ISettingsPageHostContext
 
         if (e.Property == FANavigationView.IsPaneOpenProperty ||
             e.Property == FANavigationView.OpenPaneLengthProperty ||
-            e.Property == FANavigationView.PaneDisplayModeProperty)
+            e.Property == FANavigationView.PaneDisplayModeProperty ||
+            e.Property == FANavigationView.IsPaneToggleButtonVisibleProperty)
         {
-            UpdatePaneToggleIcon();
+            if (e.Property == FANavigationView.IsPaneToggleButtonVisibleProperty)
+            {
+                UpdatePaneFooterToggleVisibility();
+            }
+
+            UpdatePaneFooterToggleIcon();
             RequestResponsiveLayoutRefresh();
         }
     }
 
+    /// <summary>
+    /// 仅在 <c>:minimal</c>（<see cref="FANavigationView.IsPaneToggleButtonVisible"/> 为 false）时显示侧栏底部备胎按钮。
+    /// 根 DataContext 为 ViewModel 时，对 <c>#RootNavigationView</c> 的绑定易失效，故用代码同步可见性。
+    /// </summary>
+    private void UpdatePaneFooterToggleVisibility()
+    {
+        if (PaneFooterToggleButton is null || RootNavigationView is null)
+        {
+            return;
+        }
+
+        PaneFooterToggleButton.IsVisible = !RootNavigationView.IsPaneToggleButtonVisible;
+    }
+
     private void RequestResponsiveLayoutRefresh()
     {
         if (_isResponsiveRefreshPending)
@@ -580,14 +603,14 @@ public partial class SettingsWindow : FAAppWindow, ISettingsPageHostContext
             : compactPaneWidth;
     }
 
-    private void UpdatePaneToggleIcon()
+    private void UpdatePaneFooterToggleIcon()
     {
-        if (TogglePaneButtonIcon is null || RootNavigationView is null)
+        if (PaneFooterToggleButtonIcon is null || RootNavigationView is null)
         {
             return;
         }
 
-        TogglePaneButtonIcon.Icon = RootNavigationView.IsPaneOpen
+        PaneFooterToggleButtonIcon.Icon = RootNavigationView.IsPaneOpen
             ? FluentIcons.Common.Icon.LineHorizontal3
             : FluentIcons.Common.Icon.Navigation;
     }
@@ -604,8 +627,6 @@ public partial class SettingsWindow : FAAppWindow, ISettingsPageHostContext
         }
 
         if (WindowTitleBarHost is null ||
-            TogglePaneButton is null ||
-            TogglePaneButtonIcon is null ||
             WindowBrandIcon is null ||
             WindowTitleTextBlock is null ||
             RestartNowButton is null ||
@@ -622,8 +643,6 @@ public partial class SettingsWindow : FAAppWindow, ISettingsPageHostContext
         var layoutScale = Math.Clamp(Math.Min(width / 1120d, height / 760d), 0.90, 1.18);
 
         const double titleBarHeight = 48d;
-        var titleBarButtonWidth = Math.Clamp(40d * layoutScale, 36d, 48d);
-        var titleBarButtonHeight = Math.Clamp(32d * layoutScale, 30d, 38d);
         var titleFontSize = Math.Clamp(12d * layoutScale, 11d, 14d);
         var titleBarIconSize = Math.Clamp(16d * layoutScale, 15d, 20d);
         var drawerTitleFontSize = Math.Clamp(16d * layoutScale, 14d, 20d);
@@ -634,9 +653,6 @@ public partial class SettingsWindow : FAAppWindow, ISettingsPageHostContext
 
         WindowTitleBarHost.Height = titleBarHeight;
 
-        TogglePaneButton.Width = titleBarButtonWidth;
-        TogglePaneButton.Height = titleBarButtonHeight;
-        TogglePaneButtonIcon.FontSize = titleBarIconSize;
         WindowBrandIcon.FontSize = titleBarIconSize + 2;
 
         WindowTitleTextBlock.FontSize = titleFontSize;

NuGet.Config

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <config>
+    <!-- 相对本文件：包落在仓库目录下，与仓库同盘（本机 D:），避免依赖 C:\Temp\cursor-sandbox-cache 等易损路径 -->
+    <add key="globalPackagesFolder" value=".nuget/packages" />
+  </config>
+</configuration>