feat: 交互式对话框生成器 + 电商取消生成与上传优化

新增:
- 交互式对话框生成器模块（路由、页面、样式、MorePage入口）
- 电商模块取消生成功能（任务追踪/取消按钮/中止逻辑）
- 视频服务图片上传支持 Blob/dataURL/远程URL 多种来源

优化:
- 电商图片上传修复本地 blob 预览图缺少原始文件的问题
- 视频规划管线错误信息改进
- 生成流程中多处增加中止检查点

src/features/ecommerce/panels/EcommerceClonePanel.tsx

@@ -133,6 +133,7 @@ interface EcommerceClonePanelProps {
   clampCloneVideoDuration: (value: number) => number;
   setCloneVideoSmart: (updater: (current: boolean) => boolean) => void;
   handleGenerate: () => void;
+  onCancelGenerate: () => void;
   formatRatioDisplayValue: (value: string) => string;
   setVideoOutfitFiles?: (video: File | null, ref: File | null) => void;
   onStartVideoPlan?: () => void;
@@ -200,6 +201,7 @@ export default function EcommerceClonePanel({
   clampCloneVideoDuration,
   setCloneVideoSmart,
   handleGenerate,
+  onCancelGenerate,
   formatRatioDisplayValue,
   setVideoOutfitFiles,
   onStartVideoPlan,
@@ -746,6 +748,11 @@ export default function EcommerceClonePanel({
           {status === "generating" ? <LoadingOutlined /> : status === "failed" ? <ReloadOutlined /> : null}
           {status === "generating" ? "生成中..." : status === "failed" ? "重新生成" : cloneOutput === "video-outfit" ? "✦ 开始换装" : "✦ 开始生成"}
         </button>
+        {status === "generating" && cloneOutput !== "video" ? (
+          <button type="button" className="clone-ai-generate clone-ai-generate--cancel" onClick={onCancelGenerate}>
+            {"\u53d6\u6d88\u751f\u6210"}
+          </button>
+        ) : null}
       </div>
     </>
   );