improve:UI

Ink Canvas/Windows/SettingsViews/Pages/SearchPage.xaml

@@ -0,0 +1,48 @@
+<ui:Page x:Class="Ink_Canvas.Windows.SettingsViews.Pages.SearchPage"
+      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+      xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+      xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+      xmlns:ui="http://schemas.inkore.net/lib/ui/wpf/modern"
+      xmlns:props="clr-namespace:Ink_Canvas.Properties"
+      mc:Ignorable="d"
+      Title="Search">
+
+    <Grid Margin="59,0,59,0">
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="*"/>
+        </Grid.RowDefinitions>
+
+        <!-- 搜索框居中偏上 -->
+        <ui:AutoSuggestBox
+            x:Name="SearchBox"
+            Grid.Row="0"
+            MaxWidth="600"
+            HorizontalAlignment="Stretch"
+            VerticalAlignment="Top"
+            Margin="0,80,0,0"
+            FontSize="14"
+            CornerRadius="8"
+            PlaceholderText="{x:Static props:NavStrings.Nav_SearchSettings}"
+            QuerySubmitted="SearchBox_QuerySubmitted"
+            TextChanged="SearchBox_TextChanged"
+            GotFocus="SearchBox_GotFocus"
+            KeyDown="SearchBox_KeyDown">
+            <ui:AutoSuggestBox.QueryIcon>
+                <ui:FontIcon Icon="{x:Static ui:SegoeFluentIcons.Search}" FontSize="14"/>
+            </ui:AutoSuggestBox.QueryIcon>
+        </ui:AutoSuggestBox>
+
+        <!-- 搜索提示 -->
+        <TextBlock
+            x:Name="HintText"
+            Grid.Row="1"
+            Text="{x:Static props:NavStrings.Nav_SearchSettings}"
+            FontSize="13"
+            Foreground="{DynamicResource TextFillColorSecondaryBrush}"
+            HorizontalAlignment="Center"
+            VerticalAlignment="Top"
+            Margin="0,24,0,0"/>
+    </Grid>
+</ui:Page>

Ink Canvas/Windows/SettingsViews/Pages/SearchPage.xaml.cs

@@ -0,0 +1,90 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Windows;
+using System.Windows.Input;
+using iNKORE.UI.WPF.Modern.Controls;
+
+namespace Ink_Canvas.Windows.SettingsViews.Pages
+{
+    public partial class SearchPage
+    {
+        /// <summary>
+        /// 选中搜索结果时触发，参数为 PageTag；"__back__" 表示返回
+        /// </summary>
+        public static event EventHandler<string> ResultSelected;
+
+        // 由 SettingsWindow 设置的静态搜索数据
+        internal static List<(string Text, string PageTag)> SearchData { get; set; }
+
+        public SearchPage()
+        {
+            InitializeComponent();
+            Loaded += (s, e) =>
+            {
+                Dispatcher.BeginInvoke(new Action(() => SearchBox.Focus()),
+                    System.Windows.Threading.DispatcherPriority.Input);
+            };
+        }
+
+        private void SearchBox_QuerySubmitted(AutoSuggestBox sender, AutoSuggestBoxQuerySubmittedEventArgs args)
+        {
+            if (SearchData == null) return;
+
+            string raw = (args.ChosenSuggestion as string) ?? args.QueryText;
+            if (string.IsNullOrWhiteSpace(raw)) return;
+
+            string query = raw.Trim();
+            var match = SearchData.Where(e => e.Text.Equals(query, StringComparison.OrdinalIgnoreCase))
+                     .Concat(SearchData.Where(e => e.Text.IndexOf(query, StringComparison.OrdinalIgnoreCase) >= 0))
+                     .FirstOrDefault();
+
+            if (match.Text != null)
+            {
+                ResultSelected?.Invoke(this, match.PageTag);
+            }
+        }
+
+        private void SearchBox_TextChanged(AutoSuggestBox sender, AutoSuggestBoxTextChangedEventArgs args)
+        {
+            if (args.Reason != AutoSuggestionBoxTextChangeReason.UserInput) return;
+            if (SearchData == null) return;
+
+            string query = sender.Text?.Trim() ?? string.Empty;
+            if (string.IsNullOrEmpty(query))
+            {
+                sender.ItemsSource = null;
+                HintText.Visibility = Visibility.Visible;
+                return;
+            }
+
+            HintText.Visibility = Visibility.Collapsed;
+
+            var suggestions = SearchData
+                .Where(e => e.Text.IndexOf(query, StringComparison.OrdinalIgnoreCase) >= 0)
+                .Select(e => e.Text)
+                .Distinct()
+                .Take(50)
+                .ToList();
+
+            sender.ItemsSource = suggestions;
+            sender.IsSuggestionListOpen = suggestions.Count > 0;
+        }
+
+        private void SearchBox_GotFocus(object sender, RoutedEventArgs e)
+        {
+            if (!string.IsNullOrEmpty(SearchBox.Text))
+            {
+                SearchBox.IsSuggestionListOpen = true;
+            }
+        }
+
+        private void SearchBox_KeyDown(object sender, KeyEventArgs e)
+        {
+            if (e.Key == Key.Escape)
+            {
+                ResultSelected?.Invoke(this, "__back__");
+            }
+        }
+    }
+}

Ink Canvas/Windows/SettingsViews/SettingsWindow.xaml

@@ -107,7 +107,8 @@ Title="{x:Static props:NavStrings.Nav_SettingsWindow_Title}"
                     x:FieldModifier="public"
                     PlaceholderText="{x:Static props:NavStrings.Nav_SearchSettings}"
                     QuerySubmitted="OnControlsSearchBoxQuerySubmitted"
-                    TextChanged="OnControlsSearchBoxTextChanged">
+                    TextChanged="OnControlsSearchBoxTextChanged"
+                    GotFocus="OnControlsSearchBoxGotFocus">
                     <ui:AutoSuggestBox.QueryIcon>
                         <ui:FontIcon Icon="{x:Static ui:SegoeFluentIcons.Search}" FontSize="12"/>
                     </ui:AutoSuggestBox.QueryIcon>

Ink Canvas/Windows/SettingsViews/SettingsWindow.xaml.cs

@@ -51,7 +51,8 @@ public partial class SettingsWindow : Window
             { "AboutPage", typeof(AboutPage) },
             { "Settings", typeof(SettingsPage) },
             { "PluginPage", typeof(PluginPage) },
-            { "PluginSettingsPage", typeof(PluginSettingsPage) }
+            { "PluginSettingsPage", typeof(PluginSettingsPage) },
+            { "SearchPage", typeof(SearchPage) }
         };
         private Dictionary<string, Type> _pageTypes;
         private readonly Dictionary<string, object> _pages = new Dictionary<string, object>();
@@ -112,7 +113,8 @@ public SettingsWindow()
                 { "AboutPage", typeof(AboutPage) },
                 { "Settings", typeof(SettingsPage) },
                 { "PluginPage", typeof(PluginPage) },
-                { "PluginSettingsPage", typeof(PluginSettingsPage) }
+                { "PluginSettingsPage", typeof(PluginSettingsPage) },
+                { "SearchPage", typeof(SearchPage) }
             };
 
             // 默认选中首页
@@ -150,10 +152,12 @@ public SettingsWindow()
             };
 
             AnnouncementService.UnreadCountChanged += UpdateAnnouncementUnreadBadge;
+            SearchPage.ResultSelected += OnSearchPageResultSelected;
 
             this.Closed += (sender, e) =>
             {
                 AnnouncementService.UnreadCountChanged -= UpdateAnnouncementUnreadBadge;
+                SearchPage.ResultSelected -= OnSearchPageResultSelected;
                 UnregisterDpiChangedListener();
                 _pages.Clear();
                 _pageTypes.Clear();
@@ -737,6 +741,31 @@ private void OnControlsSearchBoxTextChanged(AutoSuggestBox sender, AutoSuggestBo
             sender.ItemsSource = suggestions;
         }
 
+        private void OnControlsSearchBoxGotFocus(object sender, RoutedEventArgs e)
+        {
+            // 构建搜索索引并传给 SearchPage
+            EnsureSearchIndexBuilt();
+            SearchPage.SearchData = _searchIndex
+                .Select(se => (se.Text, se.PageTag))
+                .ToList();
+            NavigateToPage("SearchPage");
+            NavigationViewControl.Header = NavStrings.Nav_SearchSettings;
+            // 取消侧边栏选中状态
+            NavigationViewControl.SelectedItem = null;
+        }
+
+        private void OnSearchPageResultSelected(object sender, string pageTag)
+        {
+            if (pageTag == "__back__")
+            {
+                // 返回上一页
+                if (rootFrame.CanGoBack) rootFrame.GoBack();
+                return;
+            }
+
+            NavigateToSearchEntry(_searchIndex?.FirstOrDefault(e => e.PageTag == pageTag));
+        }
+
         // 统一获取所有导航项（主菜单+子菜单+底部菜单）
         private List<NavigationViewItem> GetAllNavigationItems()
         {