fix: align hot clone reference upload UI

src/features/ecommerce/EcommercePage.tsx

@@ -6899,7 +6899,7 @@ function ProductClonePage(_props: ProductClonePageProps = {}) {
             <div
               role="button"
               tabIndex={0}
-              className={`ecom-quick-set-upload${cloneReferenceImages.length ? " has-images" : ""}${isCloneReferenceDragging ? " is-dragging" : ""}`}
+              className={`ecom-quick-set-upload ecom-quick-hot-material ecom-quick-hot-reference${cloneReferenceImages.length ? " has-images" : ""}${isCloneReferenceDragging ? " is-dragging" : ""}`}
               onClick={() => cloneReferenceInputRef.current?.click()}
               onKeyDown={(event) => openQuickUploadWithKeyboard(event, cloneReferenceInputRef)}
               onDragOver={(event) => { event.preventDefault(); event.stopPropagation(); if (event.dataTransfer.types.includes("Files")) setIsCloneReferenceDragging(true); }}
@@ -6910,7 +6910,22 @@ function ProductClonePage(_props: ProductClonePageProps = {}) {
               <span>拖拽或点击上传</span>
               <em>参考图用于风格迁移，最多 {maxCloneReferenceImages} 张</em>
               <b>+ 上传图片</b>
-              {cloneReferenceImages.length ? renderQuickUploadThumbs(cloneReferenceImages, removeCloneReferenceImage) : null}
+              {cloneReferenceImages.length ? (
+                <>
+                  {renderHotMaterialThumbs(cloneReferenceImages, removeCloneReferenceImage)}
+                  <button
+                    type="button"
+                    className="ecom-quick-hot-add-btn"
+                    aria-label="添加更多参考图"
+                    onClick={(event) => {
+                      event.stopPropagation();
+                      cloneReferenceInputRef.current?.click();
+                    }}
+                  >
+                    <PlusOutlined />
+                  </button>
+                </>
+              ) : null}
             </div>
             <input
               ref={cloneReferenceInputRef}