树形节点图标直接复用项目现有图标资源；调整CNC编辑界面大小

XplorePlane/Services/Cnc/CncProgramService.cs

@@ -205,6 +205,32 @@ namespace XplorePlane.Services.Cnc
             return updated;
         }
 
+        /// <inheritdoc />
+        public CncProgram UpdateNode(CncProgram program, int index, CncNode node)
+        {
+            ArgumentNullException.ThrowIfNull(program);
+            ArgumentNullException.ThrowIfNull(node);
+
+            if (index < 0 || index >= program.Nodes.Count)
+                throw new ArgumentOutOfRangeException(nameof(index),
+                    $"Index out of range: {index}, Count={program.Nodes.Count}");
+
+            var nodes = new List<CncNode>(program.Nodes)
+            {
+                [index] = node with { Index = index }
+            };
+
+            var updated = program with
+            {
+                Nodes = nodes.AsReadOnly(),
+                UpdatedAt = DateTime.UtcNow
+            };
+
+            _logger.Info("Updated node: Index={Index}, Type={NodeType}, Program={ProgramName}",
+                index, node.NodeType, program.Name);
+            return updated;
+        }
+
         /// <inheritdoc />
         public async Task SaveAsync(CncProgram program, string filePath)
         {

XplorePlane/Services/Cnc/ICncProgramService.cs

@@ -4,36 +4,28 @@ using XplorePlane.Models;
 namespace XplorePlane.Services.Cnc
 {
     /// <summary>
-    /// CNC 程序管理服务接口，负责程序的创建、节点编辑、序列化/反序列化和文件读写
-    /// CNC program management service interface for creation, node editing, serialization and file I/O
+    /// CNC program management service interface.
     /// </summary>
     public interface ICncProgramService
     {
-        /// <summary>创建空的 CNC 程序 | Create an empty CNC program</summary>
         CncProgram CreateProgram(string name);
 
-        /// <summary>根据节点类型创建节点（从 IAppStateService 捕获设备状态）| Create a node by type (captures device state from IAppStateService)</summary>
         CncNode CreateNode(CncNodeType type);
 
-        /// <summary>在指定索引之后插入节点并重新编号 | Insert a node after the given index and renumber</summary>
         CncProgram InsertNode(CncProgram program, int afterIndex, CncNode node);
 
-        /// <summary>移除指定索引的节点并重新编号 | Remove the node at the given index and renumber</summary>
         CncProgram RemoveNode(CncProgram program, int index);
 
-        /// <summary>将节点从旧索引移动到新索引并重新编号 | Move a node from old index to new index and renumber</summary>
         CncProgram MoveNode(CncProgram program, int oldIndex, int newIndex);
 
-        /// <summary>将 CNC 程序保存到 .xp 文件 | Save CNC program to .xp file</summary>
+        CncProgram UpdateNode(CncProgram program, int index, CncNode node);
+
         Task SaveAsync(CncProgram program, string filePath);
 
-        /// <summary>从 .xp 文件加载 CNC 程序 | Load CNC program from .xp file</summary>
         Task<CncProgram> LoadAsync(string filePath);
 
-        /// <summary>将 CNC 程序序列化为 JSON 字符串 | Serialize CNC program to JSON string</summary>
         string Serialize(CncProgram program);
 
-        /// <summary>从 JSON 字符串反序列化 CNC 程序 | Deserialize CNC program from JSON string</summary>
         CncProgram Deserialize(string json);
     }
-}
+}