fix.修复了窗口问题，以及多次显示圆角调节选项的问题。

LanMountainDesktop.Tests/MaterialColorSettingsPageViewModelTests.cs

@@ -65,6 +65,22 @@ public sealed class MaterialColorSettingsPageViewModelTests
         Assert.Equal(1, facade.ThemeSaveCount);
     }
 
+    [Fact]
+    public void UserSelection_SystemMaterialModeRequestsRestart()
+    {
+        var facade = new FakeSettingsFacade(CreateThemeState(ThemeAppearanceValues.MaterialNone));
+        var materialService = new FakeMaterialColorService(CreateSnapshot(ThemeAppearanceValues.MaterialNone));
+        var viewModel = new MaterialColorSettingsPageViewModel(facade, materialService);
+        string? restartReason = null;
+        viewModel.RestartRequested += reason => restartReason = reason;
+
+        viewModel.SelectedSystemMaterialMode = viewModel.SystemMaterialModes.Single(option =>
+            option.Value == ThemeAppearanceValues.MaterialMica);
+
+        Assert.Equal(viewModel.SystemMaterialRestartMessage, restartReason);
+        Assert.False(string.IsNullOrWhiteSpace(restartReason));
+    }
+
     private static ThemeAppearanceSettingsState CreateThemeState(string materialMode)
     {
         return new ThemeAppearanceSettingsState(

LanMountainDesktop.Tests/SystemChromeModeTests.cs

@@ -0,0 +1,103 @@
+using Xunit;
+
+namespace LanMountainDesktop.Tests;
+
+public sealed class SystemChromeModeTests
+{
+    [Fact]
+    public void SettingsWindow_SystemChromeUsesNativeDecorations()
+    {
+        var source = ReadRepositoryFile("LanMountainDesktop", "Views", "SettingsWindow.axaml.cs");
+        var applyChromeMode = ExtractMethodSource(source, "ApplyChromeMode");
+        var onLoaded = ExtractMethodSource(source, "OnLoaded");
+
+        Assert.Contains("_useSystemChrome = useSystemChrome || OperatingSystem.IsMacOS();", applyChromeMode);
+        Assert.Contains("WindowDecorations = WindowDecorations.Full;", applyChromeMode);
+        Assert.Contains("ExtendClientAreaToDecorationsHint = !_useSystemChrome;", applyChromeMode);
+        Assert.Contains("ExtendClientAreaTitleBarHeightHint = _useSystemChrome ? 0d : CustomTitleBarHeight;", applyChromeMode);
+        Assert.Contains("TitleBar.ExtendsContentIntoTitleBar = !_useSystemChrome;", applyChromeMode);
+        Assert.Contains("WindowTitleBarHost.IsVisible = false;", applyChromeMode);
+        Assert.Contains("WindowTitleBarHost.IsVisible = true;", applyChromeMode);
+        Assert.DoesNotContain("TitleBar.ExtendsContentIntoTitleBar = true;", onLoaded);
+    }
+
+    [Fact]
+    public void ComponentEditorWindow_SystemChromeUsesNativeDecorations()
+    {
+        var source = ReadRepositoryFile("LanMountainDesktop", "Views", "ComponentEditorWindow.axaml.cs");
+        var applyChromeMode = ExtractMethodSource(source, "ApplyChromeMode");
+
+        Assert.Contains("var preferSystemChrome = useSystemChrome || OperatingSystem.IsMacOS();", applyChromeMode);
+        Assert.Contains("WindowDecorations = WindowDecorations.Full;", applyChromeMode);
+        Assert.Contains("ExtendClientAreaToDecorationsHint = false;", applyChromeMode);
+        Assert.Contains("ExtendClientAreaTitleBarHeightHint = 0d;", applyChromeMode);
+        Assert.Contains("CustomTitleBarHost.IsVisible = false;", applyChromeMode);
+        Assert.Contains("WindowDecorations = WindowDecorations.BorderOnly;", applyChromeMode);
+        Assert.Contains("ExtendClientAreaToDecorationsHint = true;", applyChromeMode);
+        Assert.Contains("CustomTitleBarHost.IsVisible = true;", applyChromeMode);
+    }
+
+    [Fact]
+    public void SavingSystemChromeSynchronizesWindowsPatcherState()
+    {
+        var source = ReadRepositoryFile("LanMountainDesktop", "Services", "Settings", "SettingsDomainServices.cs");
+
+        Assert.Contains("if (OperatingSystem.IsWindows())", source);
+        Assert.Contains("LanMountainDesktop.Platform.Windows.ChromePatchState.UseSystemChrome = state.UseSystemChrome;", source);
+    }
+
+    private static string ReadRepositoryFile(params string[] segments)
+    {
+        var directory = new DirectoryInfo(AppContext.BaseDirectory);
+        while (directory is not null)
+        {
+            var candidate = Path.Combine(new[] { directory.FullName }.Concat(segments).ToArray());
+            if (File.Exists(candidate))
+            {
+                return File.ReadAllText(candidate);
+            }
+
+            if (File.Exists(Path.Combine(directory.FullName, "LanMountainDesktop.slnx")))
+            {
+                break;
+            }
+
+            directory = directory.Parent;
+        }
+
+        throw new FileNotFoundException($"Could not locate repository file '{Path.Combine(segments)}'.");
+    }
+
+    private static string ExtractMethodSource(string source, string methodName)
+    {
+        var methodIndex = source.IndexOf($"private void {methodName}(", StringComparison.Ordinal);
+        if (methodIndex < 0)
+        {
+            methodIndex = source.IndexOf($"public void {methodName}(", StringComparison.Ordinal);
+        }
+
+        Assert.True(methodIndex >= 0, $"Could not locate method '{methodName}'.");
+
+        var braceIndex = source.IndexOf('{', methodIndex);
+        Assert.True(braceIndex >= 0, $"Could not locate method body for '{methodName}'.");
+
+        var depth = 0;
+        for (var i = braceIndex; i < source.Length; i++)
+        {
+            if (source[i] == '{')
+            {
+                depth++;
+            }
+            else if (source[i] == '}')
+            {
+                depth--;
+                if (depth == 0)
+                {
+                    return source.Substring(methodIndex, i - methodIndex + 1);
+                }
+            }
+        }
+
+        throw new InvalidOperationException($"Could not extract method '{methodName}'.");
+    }
+}

LanMountainDesktop/Localization/en-US.json

@@ -394,8 +394,6 @@
     "settings.appearance.theme_color_preview.app":  "Currently previewing colors extracted from the app wallpaper.",
     "settings.appearance.theme_color_preview.system":  "Currently previewing colors extracted from the system wallpaper.",
     "settings.appearance.theme_color_preview.fallback":  "No usable wallpaper was found. The app is using a fallback accent.",
-    "settings.appearance.corner_radius.label":  "Global corner radius style",
-    "settings.appearance.corner_radius.description":  "Select a fixed corner radius style inspired by Xiaomi HyperOS.",
     "component.color_scheme.follow_system":  "Follow system color scheme",
     "component.color_scheme.native":  "Use component custom color scheme",
     "component.settings.color_scheme":  "Color Scheme",
@@ -406,7 +404,7 @@
     "settings.appearance.system_material_desc.switchable":  "Apply the selected material to windows, Dock, status bar, and component hosts.",
     "settings.appearance.system_material_desc.fixed":  "Your current system only exposes the material modes listed here.",
     "settings.appearance.system_material_desc.auto":  "Auto prefers Mica on Windows 11, Acrylic on Windows 10, and falls back to no material when unavailable.",
-    "settings.appearance.restart_message":  "Theme source and system material changes require restarting the app.",
+    "settings.appearance.restart_message":  "Window chrome changes require restarting the app.",
     "settings.appearance.preview.primary":  "Primary",
     "settings.appearance.preview.secondary":  "Secondary",
     "settings.appearance.preview.tertiary":  "Tertiary",
@@ -442,6 +440,7 @@
     "settings.material_color.wallpaper_seed.label":  "Seed",
     "settings.material_color.system_material.label":  "System material",
     "settings.material_color.system_material.description":  "Apply the selected material mode to windows and host surfaces.",
+    "settings.material_color.system_material.restart_message":  "System material changes require restarting the app.",
     "settings.material_color.native_events.label":  "Native wallpaper change events",
     "settings.material_color.native_events.description":  "Use OS wallpaper notifications first and keep polling as fallback.",
     "settings.material_color.native_events.active":  "Native wallpaper events active",

LanMountainDesktop/Localization/zh-CN.json

@@ -394,8 +394,6 @@
     "settings.appearance.theme_color_preview.app":  "当前正在预览从应用壁纸提取的颜色。",
     "settings.appearance.theme_color_preview.system":  "当前正在预览从系统壁纸提取的颜色。",
     "settings.appearance.theme_color_preview.fallback":  "没有可用壁纸，当前使用回退强调色。",
-    "settings.appearance.corner_radius.label":  "全局圆角样式",
-    "settings.appearance.corner_radius.description":  "选择固定的全局圆角样式，受 HyperOS 启发。",
     "component.color_scheme.follow_system":  "跟随系统配色",
     "component.color_scheme.native":  "使用组件自定义配色",
     "component.settings.color_scheme":  "配色方案",
@@ -406,7 +404,7 @@
     "settings.appearance.system_material_desc.switchable":  "将所选材质应用到窗口、Dock、状态栏和组件宿主背板。",
     "settings.appearance.system_material_desc.fixed":  "当前系统仅提供这里列出的材质模式。",
     "settings.appearance.system_material_desc.auto":  "自动模式会在 Windows 11 优先使用 Mica，在 Windows 10 优先使用 Acrylic，不可用时回退到无材质。",
-    "settings.appearance.restart_message":  "主题色来源和系统材质更改需要重启应用。",
+    "settings.appearance.restart_message":  "窗口边框模式更改需要重启应用。",
     "settings.appearance.preview.primary":  "主色",
     "settings.appearance.preview.secondary":  "次色",
     "settings.appearance.preview.tertiary":  "三次色",
@@ -442,6 +440,7 @@
     "settings.material_color.wallpaper_seed.label":  "种子色",
     "settings.material_color.system_material.label":  "系统材质",
     "settings.material_color.system_material.description":  "将所选材质模式应用到窗口和宿主表面。",
+    "settings.material_color.system_material.restart_message":  "系统材质更改需要重启应用。",
     "settings.material_color.native_events.label":  "原生壁纸变更事件",
     "settings.material_color.native_events.description":  "优先使用操作系统壁纸通知，并保持轮询作为回退。",
     "settings.material_color.native_events.active":  "原生壁纸事件已激活",

LanMountainDesktop/Services/PendingRestartStateService.cs

@@ -8,6 +8,7 @@ public static class PendingRestartStateService
     public const string RenderModeReason = "RenderMode";
     public const string PluginCatalogReason = "PluginCatalog";
     public const string SettingsWindowReason = "SettingsWindow";
+    public const string SystemMaterialReason = "SystemMaterial";
 
     private static readonly object Gate = new();
     private static readonly HashSet<string> PendingReasons = new(StringComparer.OrdinalIgnoreCase);

LanMountainDesktop/Services/Settings/SettingsDomainServices.cs

@@ -315,6 +315,10 @@ internal sealed class ThemeAppearanceService : IThemeAppearanceService
         {
             snapshot.UseSystemChrome = state.UseSystemChrome;
             changedKeys.Add(nameof(AppSettingsSnapshot.UseSystemChrome));
+            if (OperatingSystem.IsWindows())
+            {
+                LanMountainDesktop.Platform.Windows.ChromePatchState.UseSystemChrome = state.UseSystemChrome;
+            }
         }
 
         if (!string.Equals(GlobalAppearanceSettings.NormalizeCornerRadiusStyle(snapshot.CornerRadiusStyle), normalizedCornerRadiusStyle, StringComparison.OrdinalIgnoreCase))

LanMountainDesktop/Services/Settings/SettingsWindowService.cs

@@ -299,6 +299,7 @@ internal sealed class SettingsWindowService : ISettingsWindowService
             ? ThemeVariant.Dark
             : ThemeVariant.Light;
         appearanceThemeService.ApplyThemeResources(window.Resources);
+        window.ApplyFluentCornerRadius();
     }
 
     private void ApplyThemeVariantAndResources(SettingsWindow window)

LanMountainDesktop/ViewModels/MaterialColorSettingsPageViewModel.cs

@@ -83,6 +83,8 @@ public sealed partial class MaterialColorSettingsPageViewModel : ViewModelBase
         _materialColorService.MaterialColorChanged += OnMaterialColorChanged;
     }
 
+    public event Action<string>? RestartRequested;
+
     public IReadOnlyList<SelectionOption> ColorModes { get; }
 
     public IReadOnlyList<SelectionOption> WallpaperColorSources { get; }
@@ -176,6 +178,9 @@ public sealed partial class MaterialColorSettingsPageViewModel : ViewModelBase
     [ObservableProperty]
     private string _systemMaterialDescription = string.Empty;
 
+    [ObservableProperty]
+    private string _systemMaterialRestartMessage = string.Empty;
+
     [ObservableProperty]
     private string _nativeWallpaperEventsLabel = string.Empty;
 
@@ -313,7 +318,14 @@ public sealed partial class MaterialColorSettingsPageViewModel : ViewModelBase
             return;
         }
 
+        var currentMode = ThemeAppearanceValues.NormalizeSystemMaterialMode(_settingsFacade.Theme.Get().SystemMaterialMode);
+        var requestedMode = ThemeAppearanceValues.NormalizeSystemMaterialMode(value.Value);
         SaveTheme();
+        if (!string.Equals(currentMode, requestedMode, StringComparison.OrdinalIgnoreCase))
+        {
+            PendingRestartStateService.SetPending(PendingRestartStateService.SystemMaterialReason, true);
+            RestartRequested?.Invoke(SystemMaterialRestartMessage);
+        }
     }
 
     partial void OnSelectedRefreshIntervalChanged(SelectionOption value)
@@ -577,6 +589,9 @@ public sealed partial class MaterialColorSettingsPageViewModel : ViewModelBase
         WallpaperSeedLabel = L("settings.material_color.wallpaper_seed.label", "Seed");
         SystemMaterialLabel = L("settings.material_color.system_material.label", "System material");
         SystemMaterialDescription = L("settings.material_color.system_material.description", "Apply the selected material mode to windows and host surfaces.");
+        SystemMaterialRestartMessage = L(
+            "settings.material_color.system_material.restart_message",
+            "System material changes require restarting the app.");
         NativeWallpaperEventsLabel = L("settings.material_color.native_events.label", "Native wallpaper change events");
         NativeWallpaperEventsDescription = L("settings.material_color.native_events.description", "Use OS wallpaper notifications first and keep polling as fallback.");
         RefreshIntervalLabel = L("settings.material_color.refresh_interval.label", "Polling interval");

LanMountainDesktop/ViewModels/SettingsViewModels.cs

@@ -1032,27 +1032,12 @@ public sealed partial class AppearanceSettingsPageViewModel : ViewModelBase
     [ObservableProperty]
     private string _useSystemChromeLabel = string.Empty;
 
-    [ObservableProperty]
-    private string _cornerRadiusStyleLabel = string.Empty;
-
-    [ObservableProperty]
-    private string _cornerRadiusStyleDescription = string.Empty;
-
     [ObservableProperty]
     private string _themeHeader = string.Empty;
 
     [ObservableProperty]
     private string _appearanceRestartMessage = string.Empty;
 
-    [ObservableProperty]
-    private string _cornerRadiusStyle = GlobalAppearanceSettings.DefaultCornerRadiusStyle;
-
-    [ObservableProperty]
-    private IReadOnlyList<SelectionOption> _cornerRadiusStyleOptions = [];
-
-    [ObservableProperty]
-    private SelectionOption? _selectedCornerRadiusStyle;
-
     public void Load()
     {
         var theme = _settingsFacade.Theme.Get();
@@ -1101,17 +1086,6 @@ public sealed partial class AppearanceSettingsPageViewModel : ViewModelBase
         PersistCurrentState(restartRequired: true);
     }
 
-    partial void OnSelectedCornerRadiusStyleChanged(SelectionOption? value)
-    {
-        if (_isInitializing || value is null)
-        {
-            return;
-        }
-
-        CornerRadiusStyle = value.Value;
-        PersistCurrentState(restartRequired: false);
-    }
-
     private void RefreshLocalizedText()
     {
         ThemeHeader = L("settings.appearance.theme_header", "Theme");
@@ -1121,25 +1095,15 @@ public sealed partial class AppearanceSettingsPageViewModel : ViewModelBase
         ThemeModeDarkText = L("settings.appearance.theme_mode.dark", "Dark");
         ThemeModeFollowSystemText = L("settings.appearance.theme_mode.follow_system", "Follow system");
         UseSystemChromeLabel = L("settings.color.use_system_chrome_toggle", "Use system window chrome");
-        CornerRadiusStyleLabel = L("settings.appearance.corner_radius.label", "Global corner radius style");
-        CornerRadiusStyleDescription = L("settings.appearance.corner_radius.description", "Select a fixed corner radius style inspired by Xiaomi HyperOS.");
         AppearanceRestartMessage = L(
             "settings.appearance.restart_message",
             "Window chrome changes require restarting the app.");
-
-        CornerRadiusStyleOptions = GlobalAppearanceSettings.AllCornerRadiusStyles
-            .Select(style => new SelectionOption(style, L($"settings.appearance.corner_radius.style_{style.ToLower()}", style)))
-            .ToList();
     }
 
     private void ApplySavedState(ThemeAppearanceSettingsState theme)
     {
         IsNightMode = theme.IsNightMode;
         UseSystemChrome = theme.UseSystemChrome;
-        CornerRadiusStyle = GlobalAppearanceSettings.NormalizeCornerRadiusStyle(theme.CornerRadiusStyle);
-        SelectedCornerRadiusStyle = CornerRadiusStyleOptions.FirstOrDefault(option =>
-            string.Equals(option.Value, CornerRadiusStyle, StringComparison.OrdinalIgnoreCase))
-            ?? CornerRadiusStyleOptions.FirstOrDefault(o => o.Value == GlobalAppearanceSettings.DefaultCornerRadiusStyle);
 
         var savedThemeMode = NormalizeThemeMode(theme.ThemeMode);
         SelectedThemeMode = ThemeModeOptions.FirstOrDefault(option =>
@@ -1201,7 +1165,6 @@ public sealed partial class AppearanceSettingsPageViewModel : ViewModelBase
         {
             IsNightMode = IsNightMode,
             UseSystemChrome = UseSystemChrome,
-            CornerRadiusStyle = GlobalAppearanceSettings.NormalizeCornerRadiusStyle(CornerRadiusStyle),
             ThemeMode = SelectedThemeMode?.Value ?? ThemeAppearanceValues.ThemeModeLight
         };
     }

LanMountainDesktop/Views/ComponentEditorWindow.axaml.cs

@@ -59,14 +59,16 @@ public partial class ComponentEditorWindow : Window
         var preferSystemChrome = useSystemChrome || OperatingSystem.IsMacOS();
         if (preferSystemChrome)
         {
-            ExtendClientAreaToDecorationsHint = true;
             WindowDecorations = WindowDecorations.Full;
+            ExtendClientAreaToDecorationsHint = false;
+            ExtendClientAreaTitleBarHeightHint = 0d;
             CustomTitleBarHost.IsVisible = false;
             return;
         }
 
         WindowDecorations = WindowDecorations.BorderOnly;
         ExtendClientAreaToDecorationsHint = true;
+        ExtendClientAreaTitleBarHeightHint = 0d;
         CustomTitleBarHost.IsVisible = true;
     }
 

LanMountainDesktop/Views/SettingsPages/AppearanceSettingsPage.axaml

@@ -38,23 +38,6 @@
                 </ui:FASettingsExpander.Footer>
             </ui:FASettingsExpander>
 
-            <ui:FASettingsExpander Header="{Binding CornerRadiusStyleLabel}"
-                                   Description="{Binding CornerRadiusStyleDescription}">
-                <ui:FASettingsExpander.IconSource>
-                    <ui:FAFontIconSource Glyph="&#xF0126;" FontFamily="avares://fluenticons.resources.avalonia/Assets#Seagull Fluent Icons" />
-                </ui:FASettingsExpander.IconSource>
-                <ui:FASettingsExpander.Footer>
-                    <ComboBox Width="220"
-                              ItemsSource="{Binding CornerRadiusStyleOptions}"
-                              SelectedItem="{Binding SelectedCornerRadiusStyle}">
-                        <ComboBox.ItemTemplate>
-                            <DataTemplate x:DataType="vm:SelectionOption">
-                                <TextBlock Text="{Binding Label}" />
-                            </DataTemplate>
-                        </ComboBox.ItemTemplate>
-                    </ComboBox>
-                </ui:FASettingsExpander.Footer>
-            </ui:FASettingsExpander>
         </StackPanel>
     </ScrollViewer>
 </UserControl>

LanMountainDesktop/Views/SettingsPages/MaterialColorSettingsPage.axaml.cs

@@ -27,12 +27,18 @@ public partial class MaterialColorSettingsPage : SettingsPageBase
     public MaterialColorSettingsPage(MaterialColorSettingsPageViewModel viewModel)
     {
         ViewModel = viewModel;
+        ViewModel.RestartRequested += OnRestartRequested;
         DataContext = ViewModel;
         InitializeComponent();
     }
 
     public MaterialColorSettingsPageViewModel ViewModel { get; }
 
+    private void OnRestartRequested(string reason)
+    {
+        RequestRestart(reason);
+    }
+
     private void OnWallpaperSeedCandidateClick(object? sender, RoutedEventArgs e)
     {
         _ = e;

LanMountainDesktop/Views/SettingsWindow.axaml.cs

@@ -15,6 +15,7 @@ using LanMountainDesktop.PluginSdk;
 using LanMountainDesktop.Services;
 using LanMountainDesktop.Services.Settings;
 using LanMountainDesktop.Settings.Core;
+using LanMountainDesktop.Shared.Contracts;
 using LanMountainDesktop.ViewModels;
 using Symbol = FluentIcons.Common.Symbol;
 
@@ -33,6 +34,7 @@ public partial class SettingsWindow : FAAppWindow, ISettingsPageHostContext
     private const double MinPaneOpenLength = 260d;
     private const double MaxPaneOpenLength = 288d;
     private const double BaseNarrowThreshold = 800d;
+    private const double CustomTitleBarHeight = 48d;
     private const string PaneToggleItemTag = "__pane_toggle__";
 
     private readonly ISettingsPageRegistry _pageRegistry;
@@ -89,14 +91,14 @@ public partial class SettingsWindow : FAAppWindow, ISettingsPageHostContext
 
     private void OnLoaded(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
     {
-        TitleBar.Height = 48;
+        TitleBar.Height = CustomTitleBarHeight;
-        TitleBar.ExtendsContentIntoTitleBar = true;
 
-        // SecRandom MainWindow：标题栏按钮悬停/按下/非活动色，与系统 caption 更一致
+        // Match the native caption button feedback used by SecRandom MainWindow.
         TitleBar.ButtonHoverBackgroundColor = Color.FromArgb(23, 0, 0, 0);
         TitleBar.ButtonPressedBackgroundColor = Color.FromArgb(52, 0, 0, 0);
         TitleBar.ButtonInactiveForegroundColor = Colors.Gray;
 
+        ApplyChromeMode(_useSystemChrome);
         SyncPendingRestartState();
         SyncTitleText();
         UpdateChromeMetrics();
@@ -186,8 +188,11 @@ public partial class SettingsWindow : FAAppWindow, ISettingsPageHostContext
     {
         _useSystemChrome = useSystemChrome || OperatingSystem.IsMacOS();
 
-        ExtendClientAreaToDecorationsHint = true;
         WindowDecorations = WindowDecorations.Full;
+        ExtendClientAreaToDecorationsHint = !_useSystemChrome;
+        ExtendClientAreaTitleBarHeightHint = _useSystemChrome ? 0d : CustomTitleBarHeight;
+        TitleBar.ExtendsContentIntoTitleBar = !_useSystemChrome;
+        TitleBar.Height = CustomTitleBarHeight;
 
         if (_useSystemChrome)
         {
@@ -564,6 +569,7 @@ public partial class SettingsWindow : FAAppWindow, ISettingsPageHostContext
                 CloseButtonText = ViewModel.RestartDialogCloseText,
                 DefaultButton = FAContentDialogButton.Primary
             };
+            ApplyFluentCornerRadius(dialog.Resources);
 
             var result = await dialog.ShowAsync(this);
             if (result == FAContentDialogResult.Primary)
@@ -802,27 +808,40 @@ public partial class SettingsWindow : FAAppWindow, ISettingsPageHostContext
     }
 
     /// <summary>
-    /// Override global corner radius tokens on the settings window root grid
+    /// Override inherited corner radius tokens on the settings window root grid
     /// so all child controls use Microsoft Fluent Design System values,
-    /// independent of the user's global corner radius preference.
+    /// independent of the user's component corner radius preference.
     /// </summary>
-    private void ApplyFluentCornerRadius()
+    public void ApplyFluentCornerRadius()
     {
-        if (RootGrid is null)
-        {
-            return;
-        }
-
         var tokens = AppearanceCornerRadiusTokenFactory.Create(
             GlobalAppearanceSettings.CornerRadiusStyleFluent);
-        RootGrid.Resources["DesignCornerRadiusMicro"] = tokens.Micro;
+        ApplyFluentCornerRadius(Resources, tokens);
-        RootGrid.Resources["DesignCornerRadiusXs"] = tokens.Xs;
+        if (RootGrid is not null)
-        RootGrid.Resources["DesignCornerRadiusSm"] = tokens.Sm;
+        {
-        RootGrid.Resources["DesignCornerRadiusMd"] = tokens.Md;
+            ApplyFluentCornerRadius(RootGrid.Resources, tokens);
-        RootGrid.Resources["DesignCornerRadiusLg"] = tokens.Lg;
+        }
-        RootGrid.Resources["DesignCornerRadiusXl"] = tokens.Xl;
+    }
-        RootGrid.Resources["DesignCornerRadiusIsland"] = tokens.Island;
+
-        RootGrid.Resources["DesignCornerRadiusComponent"] = tokens.Component;
+    private static void ApplyFluentCornerRadius(IResourceDictionary resources)
+    {
+        var tokens = AppearanceCornerRadiusTokenFactory.Create(
+            GlobalAppearanceSettings.CornerRadiusStyleFluent);
+        ApplyFluentCornerRadius(resources, tokens);
+    }
+
+    private static void ApplyFluentCornerRadius(
+        IResourceDictionary resources,
+        AppearanceCornerRadiusTokens tokens)
+    {
+        resources["DesignCornerRadiusMicro"] = tokens.Micro;
+        resources["DesignCornerRadiusXs"] = tokens.Xs;
+        resources["DesignCornerRadiusSm"] = tokens.Sm;
+        resources["DesignCornerRadiusMd"] = tokens.Md;
+        resources["DesignCornerRadiusLg"] = tokens.Lg;
+        resources["DesignCornerRadiusXl"] = tokens.Xl;
+        resources["DesignCornerRadiusIsland"] = tokens.Island;
+        resources["DesignCornerRadiusComponent"] = tokens.Component;
     }
 
     private void OnTitleBarDragZonePointerPressed(object? sender, PointerPressedEventArgs e)
@@ -973,7 +992,7 @@ public partial class SettingsWindow : FAAppWindow, ISettingsPageHostContext
         var height = Bounds.Height > 1 ? Bounds.Height : Math.Max(Height, MinHeight);
         var layoutScale = Math.Clamp(Math.Min(width / 1120d, height / 760d), 0.90, 1.18);
 
-        const double titleBarHeight = 48d;
+        const double titleBarHeight = CustomTitleBarHeight;
         var titleFontSize = Math.Clamp(12d * layoutScale, 11d, 14d);
         var titleBarIconSize = Math.Clamp(16d * layoutScale, 15d, 20d);
         var drawerTitleFontSize = Math.Clamp(16d * layoutScale, 14d, 20d);

ago --name-only --oneline

@@ -107,3 +107,327 @@
 
                     MMIISSCCEELLLLAANNEEOOUUSS CCOOMMMMAANNDDSS
 
+
+                   SSUUMMMMAARRYY OOFF LLEESSSS CCOOMMMMAANNDDSS
+
+      Commands marked with * may be preceded by a number, _N.
+      Notes in parentheses indicate the behavior if _N is given.
+      A key preceded by a caret indicates the Ctrl key; thus ^K is ctrl-K.
+
+  h  H                 Display this help.
+  q  :q  Q  :Q  ZZ     Exit.
+ ---------------------------------------------------------------------------
+
+                           MMOOVVIINNGG
+
+  e  ^E  j  ^N  CR  *  Forward  one line   (or _N lines).
+  y  ^Y  k  ^K  ^P  *  Backward one line   (or _N lines).
+  ESC-j             *  Forward  one file line (or _N file lines).
+  ESC-k             *  Backward one file line (or _N file lines).
+  f  ^F  ^V  SPACE  *  Forward  one window (or _N lines).
+  b  ^B  ESC-v      *  Backward one window (or _N lines).
+  z                 *  Forward  one window (and set window to _N).
+  w                 *  Backward one window (and set window to _N).
+  ESC-SPACE         *  Forward  one window, but don't stop at end-of-file.
+  ESC-b             *  Backward one window, but don't stop at beginning-of-file.
+  d  ^D             *  Forward  one half-window (and set half-window to _N).
+  u  ^U             *  Backward one half-window (and set half-window to _N).
+  ESC-)  RightArrow *  Right one half screen width (or _N positions).
+  ESC-(  LeftArrow  *  Left  one half screen width (or _N positions).
+  ESC-}  ^RightArrow   Right to last column displayed.
+  ESC-{  ^LeftArrow    Left  to first column.
+  F                    Forward forever; like "tail -f".
+  ESC-F                Like F but stop when search pattern is found.
+  r  ^R  ^L            Repaint screen.
+  R                    Repaint screen, discarding buffered input.
+        ---------------------------------------------------
+        Default "window" is the screen height.
+        Default "half-window" is half of the screen height.
+ ---------------------------------------------------------------------------
+
+                          SSEEAARRCCHHIINNGG
+
+  /_p_a_t_t_e_r_n          *  Search forward for (_N-th) matching line.
+  ?_p_a_t_t_e_r_n          *  Search backward for (_N-th) matching line.
+  n                 *  Repeat previous search (for _N-th occurrence).
+  N                 *  Repeat previous search in reverse direction.
+  ESC-n             *  Repeat previous search, spanning files.
+  ESC-N             *  Repeat previous search, reverse dir. & spanning files.
+  ^O^N  ^On         *  Search forward for (_N-th) OSC8 hyperlink.
+  ^O^P  ^Op         *  Search backward for (_N-th) OSC8 hyperlink.
+  ^O^L  ^Ol            Jump to the currently selected OSC8 hyperlink.
+  ESC-u                Undo (toggle) search highlighting.
+  ESC-U                Clear search highlighting.
+  &_p_a_t_t_e_r_n          *  Display only matching lines.
+        ---------------------------------------------------
+		Search is case-sensitive unless changed with -i or -I.
+        A search pattern may begin with one or more of:
+        ^N or !  Search for NON-matching lines.
+        ^E or *  Search multiple files (pass thru END OF FILE).
+        ^F or @  Start search at FIRST file (for /) or last file (for ?).
+        ^K       Highlight matches, but don't move (KEEP position).
+        ^R       Don't use REGULAR EXPRESSIONS.
+        ^S _n     Search for match in _n-th parenthesized subpattern.
+        ^W       WRAP search if no match found.
+        ^L       Enter next character literally into pattern.
+ ---------------------------------------------------------------------------
+
+                           JJUUMMPPIINNGG
+
+  g  <  ESC-<       *  Go to first line in file (or line _N).
+  G  >  ESC->       *  Go to last line in file (or line _N).
+  p  %              *  Go to beginning of file (or _N percent into file).
+  t                 *  Go to the (_N-th) next tag.
+  T                 *  Go to the (_N-th) previous tag.
+  {  (  [           *  Find close bracket } ) ].
+  }  )  ]           *  Find open bracket { ( [.
+  ESC-^F _<_c_1_> _<_c_2_>  *  Find close bracket _<_c_2_>.
+  ESC-^B _<_c_1_> _<_c_2_>  *  Find open bracket _<_c_1_>.
+        ---------------------------------------------------
+        Each "find close bracket" command goes forward to the close bracket 
+          matching the (_N-th) open bracket in the top line.
+        Each "find open bracket" command goes backward to the open bracket 
+          matching the (_N-th) close bracket in the bottom line.
+
+  m_<_l_e_t_t_e_r_>            Mark the current top line with <letter>.
+  M_<_l_e_t_t_e_r_>            Mark the current bottom line with <letter>.
+  '_<_l_e_t_t_e_r_>            Go to a previously marked position.
+  ''                   Go to the previous position.
+  ^X^X                 Same as '.
+  ESC-m_<_l_e_t_t_e_r_>        Clear a mark.
+        ---------------------------------------------------
+        A mark is any upper-case or lower-case letter.
+        Certain marks are predefined:
+             ^  means  beginning of the file
+             $  means  end of the file
+ ---------------------------------------------------------------------------
+
+                        CCHHAANNGGIINNGG FFIILLEESS
+
+  :e [_f_i_l_e]            Examine a new file.
+  ^X^V                 Same as :e.
+  :n                *  Examine the (_N-th) next file from the command line.
+  :p                *  Examine the (_N-th) previous file from the command line.
+  :x                *  Examine the first (or _N-th) file from the command line.
+  ^O^O                 Open the currently selected OSC8 hyperlink.
+  :d                   Delete the current file from the command line list.
+  =  ^G  :f            Print current file name.
+ ---------------------------------------------------------------------------
+
+                    MMIISSCCEELLLLAANNEEOOUUSS CCOOMMMMAANNDDSS
+
+  -_<_f_l_a_g_>              Toggle a command line option [see OPTIONS below].
+  --_<_n_a_m_e_>             Toggle a command line option, by name.
+  __<_f_l_a_g_>              Display the setting of a command line option.
+  ___<_n_a_m_e_>             Display the setting of an option, by name.
+  +_c_m_d                 Execute the less cmd each time a new file is examined.
+
+  !_c_o_m_m_a_n_d             Execute the shell command with $SHELL.
+  #_c_o_m_m_a_n_d             Execute the shell command, expanded like a prompt.
+  |XX_c_o_m_m_a_n_d            Pipe file between current pos & mark XX to shell command.
+  s _f_i_l_e               Save input to a file.
+  v                    Edit the current file with $VISUAL or $EDITOR.
+  V                    Print version number of "less".
+ ---------------------------------------------------------------------------
+
+                           OOPPTTIIOONNSS
+
+        Most options may be changed either on the command line,
+        or from within less by using the - or -- command.
+        Options may be given in one of two forms: either a single
+        character preceded by a -, or a name preceded by --.
+
+  -?  ........  --help
+                  Display help (from command line).
+  -a  ........  --search-skip-screen
+                  Search skips current screen.
+  -A  ........  --SEARCH-SKIP-SCREEN
+                  Search starts just after target line.
+  -b [_N]  ....  --buffers=[_N]
+                  Number of buffers.
+  -B  ........  --auto-buffers
+                  Don't automatically allocate buffers for pipes.
+  -c  ........  --clear-screen
+                  Repaint by clearing rather than scrolling.
+  -d  ........  --dumb
+                  Dumb terminal.
+  -D xx_c_o_l_o_r  .  --color=xx_c_o_l_o_r
+                  Set screen colors.
+  -e  -E  ....  --quit-at-eof  --QUIT-AT-EOF
+                  Quit at end of file.
+  -f  ........  --force
+                  Force open non-regular files.
+  -F  ........  --quit-if-one-screen
+                  Quit if entire file fits on first screen.
+  -g  ........  --hilite-search
+                  Highlight only last match for searches.
+  -G  ........  --HILITE-SEARCH
+                  Don't highlight any matches for searches.
+  -h [_N]  ....  --max-back-scroll=[_N]
+                  Backward scroll limit.
+  -i  ........  --ignore-case
+                  Ignore case in searches that do not contain uppercase.
+  -I  ........  --IGNORE-CASE
+                  Ignore case in all searches.
+  -j [_N]  ....  --jump-target=[_N]
+                  Screen position of target lines.
+  -J  ........  --status-column
+                  Display a status column at left edge of screen.
+  -k _f_i_l_e  ...  --lesskey-file=_f_i_l_e
+                  Use a compiled lesskey file.
+  -K  ........  --quit-on-intr
+                  Exit less in response to ctrl-C.
+  -L  ........  --no-lessopen
+                  Ignore the LESSOPEN environment variable.
+  -m  -M  ....  --long-prompt  --LONG-PROMPT
+                  Set prompt style.
+  -n .........  --line-numbers
+                  Suppress line numbers in prompts and messages.
+  -N .........  --LINE-NUMBERS
+                  Display line number at start of each line.
+  -o [_f_i_l_e] ..  --log-file=[_f_i_l_e]
+                  Copy to log file (standard input only).
+  -O [_f_i_l_e] ..  --LOG-FILE=[_f_i_l_e]
+                  Copy to log file (unconditionally overwrite).
+  -p _p_a_t_t_e_r_n .  --pattern=[_p_a_t_t_e_r_n]
+                  Start at pattern (from command line).
+  -P [_p_r_o_m_p_t]   --prompt=[_p_r_o_m_p_t]
+                  Define new prompt.
+  -q  -Q  ....  --quiet  --QUIET  --silent --SILENT
+                  Quiet the terminal bell.
+  -r  -R  ....  --raw-control-chars  --RAW-CONTROL-CHARS
+                  Output "raw" control characters.
+  -s  ........  --squeeze-blank-lines
+                  Squeeze multiple blank lines.
+  -S  ........  --chop-long-lines
+                  Chop (truncate) long lines rather than wrapping.
+  -t _t_a_g  ....  --tag=[_t_a_g]
+                  Find a tag.
+  -T [_t_a_g_s_f_i_l_e] --tag-file=[_t_a_g_s_f_i_l_e]
+                  Use an alternate tags file.
+  -u  -U  ....  --underline-special  --UNDERLINE-SPECIAL
+                  Change handling of backspaces, tabs and carriage returns.
+  -V  ........  --version
+                  Display the version number of "less".
+  -w  ........  --hilite-unread
+                  Highlight first new line after forward-screen.
+  -W  ........  --HILITE-UNREAD
+                  Highlight first new line after any forward movement.
+  -x [_N[,...]]  --tabs=[_N[,...]]
+                  Set tab stops.
+  -X  ........  --no-init
+                  Don't use termcap init/deinit strings.
+  -y [_N]  ....  --max-forw-scroll=[_N]
+                  Forward scroll limit.
+  -z [_N]  ....  --window=[_N]
+                  Set size of window.
+  -" [_c[_c]]  .  --quotes=[_c[_c]]
+                  Set shell quote characters.
+  -~  ........  --tilde
+                  Don't display tildes after end of file.
+  -# [_N]  ....  --shift=[_N]
+                  Set horizontal scroll amount (0 = one half screen width).
+
+                --exit-follow-on-close
+                  Exit F command on a pipe when writer closes pipe.
+                --file-size
+                  Automatically determine the size of the input file.
+                --follow-name
+                  The F command changes files if the input file is renamed.
+                --form-feed
+                  Stop scrolling when a form feed character is reached.
+                --header=[_L[,_C[,_N]]]
+                  Use _L lines (starting at line _N) and _C columns as headers.
+                --incsearch
+                  Search file as each pattern character is typed in.
+                --intr=[_C]
+                  Use _C instead of ^X to interrupt a read.
+                --lesskey-context=_t_e_x_t
+                  Use lesskey source file contents.
+                --lesskey-src=_f_i_l_e
+                  Use a lesskey source file.
+                --line-num-width=[_N]
+                  Set the width of the -N line number field to _N characters.
+                --match-shift=[_N]
+                  Show at least _N characters to the left of a search match.
+                --modelines=[_N]
+                  Read _N lines from the input file and look for vim modelines.
+                --mouse
+                  Enable mouse input.
+                --no-edit-warn
+                  Don't warn when using v command on a file opened via LESSOPEN.
+                --no-keypad
+                  Don't send termcap keypad init/deinit strings.
+                --no-histdups
+                  Remove duplicates from command history.
+                --no-number-headers
+                  Don't give line numbers to header lines.
+                --no-paste
+                  Ignore pasted input.
+                --no-search-header-lines
+                  Searches do not include header lines.
+                --no-search-header-columns
+                  Searches do not include header columns.
+                --no-search-headers
+                  Searches do not include header lines or columns.
+                --no-vbell
+                  Disable the terminal's visual bell.
+                --redraw-on-quit
+                  Redraw final screen when quitting.
+                --rscroll=[_C]
+                  Set the character used to mark truncated lines.
+                --save-marks
+                  Retain marks across invocations of less.
+                --search-options=[EFKNRW-]
+                  Set default options for every search.
+                --show-preproc-errors
+                  Display a message if preprocessor exits with an error status.
+                --proc-backspace
+                  Process backspaces for bold/underline.
+                --PROC-BACKSPACE
+                  Treat backspaces as control characters.
+                --proc-return
+                  Delete carriage returns before newline.
+                --PROC-RETURN
+                  Treat carriage returns as control characters.
+                --proc-tab
+                  Expand tabs to spaces.
+                --PROC-TAB
+                  Treat tabs as control characters.
+                --status-col-width=[_N]
+                  Set the width of the -J status column to _N characters.
+                --status-line
+                  Highlight or color the entire line containing a mark.
+                --use-backslash
+                  Subsequent options use backslash as escape char.
+                --use-color
+                  Enables colored text.
+                --wheel-lines=[_N]
+                  Each click of the mouse wheel moves _N lines.
+                --wordwrap
+                  Wrap lines at spaces.
+
+
+ ---------------------------------------------------------------------------
+
+                          LLIINNEE EEDDIITTIINNGG
+
+        These keys can be used to edit text being entered 
+        on the "command line" at the bottom of the screen.
+
+ RightArrow ..................... ESC-l ... Move cursor right one character.
+ LeftArrow ...................... ESC-h ... Move cursor left one character.
+ ctrl-RightArrow  ESC-RightArrow  ESC-w ... Move cursor right one word.
+ ctrl-LeftArrow   ESC-LeftArrow   ESC-b ... Move cursor left one word.
+ HOME ........................... ESC-0 ... Move cursor to start of line.
+ END ............................ ESC-$ ... Move cursor to end of line.
+ BACKSPACE ................................ Delete char to left of cursor.
+ DELETE ......................... ESC-x ... Delete char under cursor.
+ ctrl-BACKSPACE   ESC-BACKSPACE ........... Delete word to left of cursor.
+ ctrl-DELETE .... ESC-DELETE .... ESC-X ... Delete word under cursor.
+ ctrl-U ......... ESC (MS-DOS only) ....... Delete entire line.
+ UpArrow ........................ ESC-k ... Retrieve previous command line.
+ DownArrow ...................... ESC-j ... Retrieve next command line.
+ TAB ...................................... Complete filename & cycle.
+ SHIFT-TAB ...................... ESC-TAB   Complete filename & reverse cycle.
+ ctrl-L ................................... Complete filename, list all.

ago --stat --format=short

@@ -42,3 +42,68 @@
   ?_p_a_t_t_e_r_n          *  Search backward for (_N-th) matching line.
   n                 *  Repeat previous search (for _N-th occurrence).
   N                 *  Repeat previous search in reverse direction.
+  ESC-n             *  Repeat previous search, spanning files.
+  ESC-N             *  Repeat previous search, reverse dir. & spanning files.
+  ^O^N  ^On         *  Search forward for (_N-th) OSC8 hyperlink.
+  ^O^P  ^Op         *  Search backward for (_N-th) OSC8 hyperlink.
+  ^O^L  ^Ol            Jump to the currently selected OSC8 hyperlink.
+  ESC-u                Undo (toggle) search highlighting.
+  ESC-U                Clear search highlighting.
+  &_p_a_t_t_e_r_n          *  Display only matching lines.
+        ---------------------------------------------------
+		Search is case-sensitive unless changed with -i or -I.
+        A search pattern may begin with one or more of:
+        ^N or !  Search for NON-matching lines.
+        ^E or *  Search multiple files (pass thru END OF FILE).
+        ^F or @  Start search at FIRST file (for /) or last file (for ?).
+        ^K       Highlight matches, but don't move (KEEP position).
+        ^R       Don't use REGULAR EXPRESSIONS.
+        ^S _n     Search for match in _n-th parenthesized subpattern.
+        ^W       WRAP search if no match found.
+        ^L       Enter next character literally into pattern.
+ ---------------------------------------------------------------------------
+
+                           JJUUMMPPIINNGG
+
+  g  <  ESC-<       *  Go to first line in file (or line _N).
+  G  >  ESC->       *  Go to last line in file (or line _N).
+  p  %              *  Go to beginning of file (or _N percent into file).
+  t                 *  Go to the (_N-th) next tag.
+  T                 *  Go to the (_N-th) previous tag.
+  {  (  [           *  Find close bracket } ) ].
+  }  )  ]           *  Find open bracket { ( [.
+  ESC-^F _<_c_1_> _<_c_2_>  *  Find close bracket _<_c_2_>.
+  ESC-^B _<_c_1_> _<_c_2_>  *  Find open bracket _<_c_1_>.
+        ---------------------------------------------------
+        Each "find close bracket" command goes forward to the close bracket 
+          matching the (_N-th) open bracket in the top line.
+        Each "find open bracket" command goes backward to the open bracket 
+          matching the (_N-th) close bracket in the bottom line.
+
+  m_<_l_e_t_t_e_r_>            Mark the current top line with <letter>.
+  M_<_l_e_t_t_e_r_>            Mark the current bottom line with <letter>.
+  '_<_l_e_t_t_e_r_>            Go to a previously marked position.
+  ''                   Go to the previous position.
+  ^X^X                 Same as '.
+  ESC-m_<_l_e_t_t_e_r_>        Clear a mark.
+        ---------------------------------------------------
+        A mark is any upper-case or lower-case letter.
+        Certain marks are predefined:
+             ^  means  beginning of the file
+             $  means  end of the file
+ ---------------------------------------------------------------------------
+
+                        CCHHAANNGGIINNGG FFIILLEESS
+
+  :e [_f_i_l_e]            Examine a new file.
+  ^X^V                 Same as :e.
+  :n                *  Examine the (_N-th) next file from the command line.
+  :p                *  Examine the (_N-th) previous file from the command line.
+  :x                *  Examine the first (or _N-th) file from the command line.
+  ^O^O                 Open the currently selected OSC8 hyperlink.
+  :d                   Delete the current file from the command line list.
+  =  ^G  :f            Print current file name.
+ ---------------------------------------------------------------------------
+
+                    MMIISSCCEELLLLAANNEEOOUUSS CCOOMMMMAANNDDSS
+