fix(prefab): 修复预制体编辑模式的保存与退出，使用原生 scene://edit-mode 接口替代无效的 IPC 广播，更新相关使用文档与安全规定

src/main.js

@@ -345,6 +345,16 @@ const getToolsList = () => {
             description: `保存当前场景的修改`,
             inputSchema: { type: "object", properties: {} },
         },
+        {
+            name: "save_prefab",
+            description: `保存当前正在编辑的预制体的修改（仅在 open_prefab 进入预制体编辑模式后使用）`,
+            inputSchema: { type: "object", properties: {} },
+        },
+        {
+            name: "close_prefab",
+            description: `退出预制体编辑模式，返回普通场景编辑状态`,
+            inputSchema: { type: "object", properties: {} },
+        },
         {
             name: "get_scene_hierarchy",
             description: `获取当前场景的节点树结构（包含 UUID、名称、子节点数）。若要查询节点组件详情等，请使用 manage_components。`,
@@ -1238,6 +1248,24 @@ module.exports = {
                 callback(null, "场景保存成功。");
                 break;
 
+            case "save_prefab":
+                isSceneBusy = true;
+                addLog("info", "调用场景脚本保存预制体...");
+                callSceneScriptWithTimeout("mcp-bridge", "save-prefab", {}, (err, res) => {
+                    isSceneBusy = false;
+                    callback(err, res);
+                });
+                break;
+
+            case "close_prefab":
+                isSceneBusy = true;
+                addLog("info", "调用场景脚本退出预制体模式...");
+                callSceneScriptWithTimeout("mcp-bridge", "close-prefab", {}, (err, res) => {
+                    isSceneBusy = false;
+                    callback(err, res);
+                });
+                break;
+
             case "get_scene_hierarchy":
                 callSceneScriptWithTimeout("mcp-bridge", "get-hierarchy", args, callback);
                 break;