fix: 优化栅格化命令，支持父图层及其子图层的栅格化，并改进加载提示的管理

src/component/Canvas/CanvasEditor/commands/RasterizeLayerCommand.js

@@ -45,6 +45,13 @@ export class RasterizeLayerCommand extends Command {
     );
     this.layer = layer;
     this.parentLayer = parent;
+
+    // 新增：如果有父图层，则栅格化父图层及其所有子图层
+    if (this.parentLayer) {
+      this.layer = this.parentLayer;
+      this.layerId = this.parentLayer.id;
+    }
+
     this.isGroupLayer = this.layer?.children && this.layer.children.length > 0;
 
     if (!this.layer) {

src/component/Canvas/CanvasEditor/managers/ToolManager.js

@@ -795,18 +795,17 @@ export class ToolManager {
    */
   async _rasterizeLayerForLiquify(layerId) {
     if (!this.commandManager || !this.layerManager) return;
+    // 显示加载Modal
+    const loadingModal = Modal.info({
+      title: "正在栅格化",
+      content: "正在栅格化图层，请稍候...",
+      okButtonProps: { style: { display: "none" } },
+      centered: true,
+      closable: false,
+      maskClosable: false,
+    });
 
     try {
-      // 显示加载Modal
-      const loadingModal = Modal.info({
-        title: "正在栅格化",
-        content: "正在栅格化图层，请稍候...",
-        okButtonProps: { style: { display: "none" } },
-        centered: true,
-        closable: false,
-        maskClosable: false,
-      });
-
       // 创建栅格化命令
       const rasterizeCommand = new RasterizeLayerCommand({
         canvas: this.canvas,
@@ -819,9 +818,6 @@ export class ToolManager {
       // 执行命令
       const result = await this.commandManager.execute(rasterizeCommand);
 
-      // 关闭加载Modal
-      loadingModal.destroy();
-
       if (result) {
         // 栅格化成功，启动液化
         message.success("图层已成功栅格化，可以进行液化操作");
@@ -837,12 +833,16 @@ export class ToolManager {
       }
     } catch (error) {
       console.error("栅格化图层失败:", error);
+
       Modal.error({
         title: "栅格化错误",
         content: `栅格化失败：${error.message}`,
         okText: "确定",
         centered: true,
       });
+    } finally {
+      // 关闭加载Modal
+      loadingModal.destroy();
     }
   }