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。

NodeFlow/Model/Operations/RemoveCanvasOperation.cs

@@ -0,0 +1,64 @@
+using Serein.Library;
+using Serein.Library.Api;
+using Serein.NodeFlow.Model.Nodes;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Serein.NodeFlow.Model.Operations
+{
+    internal class RemoveCanvasOperation : OperationBase
+    {
+        public override string Theme => nameof(RemoveCanvasOperation);
+        public override bool IsCanUndo => false;
+        public required string CanvasGuid { get; set; }
+
+        private FlowCanvasDetailsInfo? flowCanvasDetailsInfo;
+        private FlowCanvasDetails? flowCanvasDetails;
+
+        public override bool ValidationParameter()
+        {
+            var canvasModel = flowModelService.GetCanvasModel(CanvasGuid);
+            if (canvasModel is null) return false; // 画布不存在
+            var nodeCount = canvasModel.Nodes.Count;
+            if (nodeCount > 0)
+            {
+                SereinEnv.WriteLine(InfoType.WARN, "无法删除具有节点的画布");
+                return false;
+            }
+            this.flowCanvasDetails = canvasModel;
+            return true;
+        }
+
+        public override async Task<bool> ExecuteAsync()
+        {
+            if (!ValidationParameter()) return false;
+
+            if (flowCanvasDetails is null)
+            {
+                // 验证过画布存在，但这时画布不存在了
+                // 考虑到多线程操作影响，一般不会进入这个逻辑分支
+                var canvasModel = flowModelService.GetCanvasModel(CanvasGuid);
+                if (canvasModel is null) return false; // 画布不存在
+                flowCanvasDetails = canvasModel;
+            }
+
+            flowModelService.RemoveCanvasModel(flowCanvasDetails);
+            flowCanvasDetailsInfo = flowCanvasDetails.ToInfo();
+
+            await TriggerEvent(() =>
+            {
+                flowEnvironmentEvent.OnCanvasRemoved(new CanvasRemoveEventArgs(flowCanvasDetails.Guid));
+            });
+            return true;
+        }
+
+        public override void ToInfo()
+        {
+            throw new NotImplementedException();
+        }
+
+    }
+}