feat: 添加图层缩略图更新功能，优化变换命令执行后的图层状态

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

@@ -60,6 +60,19 @@ export class TransformCommand extends Command {
     // 应用最终变换状态
     await this._applyTransform(targetObject, this.finalState);
 
+    setTimeout(() => {
+      // 现在图层就是元素本身，直接更新元素的缩略图
+      this?.layerManager?.canvasManager?.thumbnailManager?.generateLayerThumbnail?.(
+        this.layer.id
+      );
+      if (this.parent) {
+        // 如果有父图层，更新父图层的缩略图
+        this?.layerManager?.canvasManager?.thumbnailManager?.generateLayerThumbnail?.(
+          this.parent.id
+        );
+      }
+    }, 300);
+
     // 触发画布更新
     this.canvas.renderAll();
 
@@ -86,6 +99,18 @@ export class TransformCommand extends Command {
     // 应用初始变换状态
     await this._applyTransform(targetObject, this.initialState);
 
+    setTimeout(() => {
+      // 现在图层就是元素本身，直接更新元素的缩略图
+      this?.layerManager?.canvasManager?.thumbnailManager?.generateLayerThumbnail?.(
+        this.layer.id
+      );
+      if (this.parent) {
+        // 如果有父图层，更新父图层的缩略图
+        this?.layerManager?.canvasManager?.thumbnailManager?.generateLayerThumbnail?.(
+          this.parent.id
+        );
+      }
+    }, 300);
     // 触发画布更新
     this.canvas.renderAll();