修复算子工具箱搜索功能

XplorePlane/ViewModels/ImageProcessing/OperatorToolboxViewModel.cs

@@ -36,6 +36,7 @@ namespace XplorePlane.ViewModels
     {
         private readonly IImageProcessingService _imageProcessingService;
         private string _searchText = string.Empty;
+        private OperatorGroupViewModel _selectedGroup;
 
         // UI 元数据（分类 + 图标）由 ProcessorUiMetadata 统一提供，保持工具箱与流水线图标一致
 
@@ -52,6 +53,12 @@ namespace XplorePlane.ViewModels
         public ObservableCollection<OperatorDescriptor> FilteredOperators { get; }
         public ObservableCollection<OperatorGroupViewModel> FilteredGroups { get; }
 
+        public OperatorGroupViewModel SelectedGroup
+        {
+            get => _selectedGroup;
+            set => SetProperty(ref _selectedGroup, value);
+        }
+
         public string SearchText
         {
             get => _searchText;
@@ -78,6 +85,7 @@ namespace XplorePlane.ViewModels
         {
             FilteredOperators.Clear();
             FilteredGroups.Clear();
+            SelectedGroup = null;
 
             var filtered = string.IsNullOrWhiteSpace(SearchText)
                 ? AvailableOperators
@@ -101,6 +109,8 @@ namespace XplorePlane.ViewModels
                     Operators = new ObservableCollection<OperatorDescriptor>(group)
                 });
             }
+
+            SelectedGroup = FilteredGroups.FirstOrDefault();
         }
 
         private static int GetCategoryOrder(string category) => category switch

XplorePlane/Views/ImageProcessing/OperatorToolboxView.xaml

@@ -100,6 +100,7 @@
                 <TabControl x:Name="ToolboxListBox"
                             Margin="8"
                             ItemContainerStyle="{StaticResource OperatorToolboxTabItemStyle}"
+                            SelectedItem="{Binding SelectedGroup, Mode=TwoWay}"
                             ItemsSource="{Binding FilteredGroups}">
                     <TabControl.ItemTemplate>
                         <DataTemplate>

XplorePlane/Views/ImageProcessing/OperatorToolboxWindow.xaml

@@ -3,7 +3,8 @@
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:views="clr-namespace:XplorePlane.Views"
         Title="算子工具箱"
-        Width="500" Height="560"
+        Width="460" Height="540"
+        MinWidth="420" MinHeight="500"
         WindowStartupLocation="CenterOwner"
         ShowInTaskbar="False"
         WindowStyle="None"