feat: 添加场景头部信息字段，优化场景数据保存逻辑

src/apis/scene/type.ts

@@ -25,6 +25,10 @@ export interface StandardScene {
   routes?: Array<StandardSceneRoute>; // 标准线路信息
   areas?: Array<StandardSceneArea>; // 标准区域信息
   blocks?: Array<[number, number]>; // 障碍点集合
+  header?: {
+    width: number;
+    height: number;
+  }; // 场景头部信息
 }
 export interface StandardScenePoint {
   id: string;

src/services/editor.service.ts

@@ -52,7 +52,11 @@ export class EditorService extends Meta2d {
       scene.robotGroups = [detail.group];
       scene.robots = detail.robots;
     }
-    const { robotGroups, robots, points, routes, areas } = scene;
+    const { robotGroups, robots, points, routes, areas, header } = scene;
+
+    // 保存header字段
+    this.#originalSceneData = { header };
+
     this.open();
     this.setState(editable);
     this.#loadRobots(robotGroups, robots);
@@ -74,7 +78,9 @@ export class EditorService extends Meta2d {
       routes: this.routes.value.map((v) => this.#mapSceneRoute(v)).filter((v) => !isNil(v)),
       areas: this.areas.value.map((v) => this.#mapSceneArea(v)).filter((v) => !isNil(v)),
       blocks: [],
+      header: this.#originalSceneData?.header, // 保留header字段
     };
+
     return JSON.stringify(scene);
   }
 
@@ -365,6 +371,9 @@ export class EditorService extends Meta2d {
   }
   //#endregion
 
+  /** 保存header字段 */
+  #originalSceneData?: { header?: { width: number; height: number } };
+
   /** 画布变化事件流，用于触发响应式数据更新 */
   readonly #change$$ = new Subject<boolean>();