1. 重新设计了Generate项目及相关特性的命名，避免与其他类型混淆。

2. 补充了部分注释。
3. 修改了删除容器节点时，容器内子节点未正确删除的问题。

Workbench/ViewModels/FlowEditViewModel.cs

@@ -20,7 +20,7 @@ namespace Serein.Workbench.ViewModels
     /// <summary>
     /// 流程编辑数据视图
     /// </summary>
-    public partial class FlowEditViewModel : ObservableObject
+    internal partial class FlowEditViewModel : ObservableObject
     {
         /// <summary>
         /// 画布集合

Workbench/ViewModels/MainMenuBarViewModel.cs

@@ -8,7 +8,7 @@ using System.Windows.Input;
 
 namespace Serein.Workbench.ViewModels
 {
-    public class MainMenuBarViewModel : ObservableObject
+    internal class MainMenuBarViewModel : ObservableObject
     {
         private readonly IFlowEnvironment flowEnvironment;
         private readonly FlowNodeService flowNodeService;

Workbench/ViewModels/MainViewModel.cs

@@ -10,10 +10,17 @@ using System.Windows;
 
 namespace Serein.Workbench.ViewModels
 {
+    /// <summary>
+    /// 主视图模型
+    /// </summary>
     public class MainViewModel : ObservableObject
     {
         private readonly IKeyEventService keyEventService;
 
+        /// <summary>
+        /// 主视图模型构造函数
+        /// </summary>
+        /// <param name="keyEventService"></param>
         public MainViewModel(IKeyEventService keyEventService)
         {