feat: 多页面拖拽上传、滚动条精简、UI优化

- 剧本评测/分辨率提升/数字人/角色迁移/图片工作台/去水印/电商：新增外部拖拽文件上传
- 电商：爆款图复刻上传框支持拖拽+大滚动条，短视频/模特图/详情图滚动条精简回退
- 图片工作台：右侧输出面板移至左侧提示词上方，删除局部重绘遮罩/结果框
- 数字人：生成按钮改为「开始生成」
- 局部重绘：编辑遮罩→编辑页面
- 对话框生成器：新增对话/视频模式、模型/速度/深度选择按钮
- 视频时长默认改为5秒
- 工具箱页面空状态logo统一绿底亮色图标
- 多处CSS滚动条和布局优化

src/features/ecommerce/EcommercePage.tsx

@@ -991,6 +991,32 @@ function ProductClonePage(_props: ProductClonePageProps = {}) {
     event.target.value = "";
   };
 
+  const [isCloneReferenceDragging, setIsCloneReferenceDragging] = useState(false);
+
+  const handleCloneReferenceDragOver = (event: DragEvent<HTMLButtonElement>) => {
+    event.preventDefault();
+    event.stopPropagation();
+    if (event.dataTransfer.types.includes("Files")) {
+      setIsCloneReferenceDragging(true);
+    }
+  };
+
+  const handleCloneReferenceDragLeave = (event: DragEvent<HTMLButtonElement>) => {
+    event.preventDefault();
+    event.stopPropagation();
+    if (event.currentTarget === event.target || !event.currentTarget.contains(event.relatedTarget as Node)) {
+      setIsCloneReferenceDragging(false);
+    }
+  };
+
+  const handleCloneReferenceDrop = (event: DragEvent<HTMLButtonElement>) => {
+    event.preventDefault();
+    event.stopPropagation();
+    setIsCloneReferenceDragging(false);
+    const files = Array.from(event.dataTransfer.files);
+    if (files.length) addCloneReferenceImages(files);
+  };
+
   const updateCloneSetCount = (key: CloneSetCountKey, delta: -1 | 1) => {
     setCloneSetCounts((current) => {
       const total = Object.values(current).reduce((sum, value) => sum + value, 0);
@@ -1949,6 +1975,10 @@ function ProductClonePage(_props: ProductClonePageProps = {}) {
       setOpenCloneBasicSelect={setOpenCloneBasicSelect}
       setCloneReferenceMode={setCloneReferenceMode}
       handleCloneReferenceUpload={handleCloneReferenceUpload}
+      isCloneReferenceDragging={isCloneReferenceDragging}
+      handleCloneReferenceDragOver={handleCloneReferenceDragOver}
+      handleCloneReferenceDragLeave={handleCloneReferenceDragLeave}
+      handleCloneReferenceDrop={handleCloneReferenceDrop}
       setCloneReplicateLevel={setCloneReplicateLevel}
       startCloneSetCountHold={startCloneSetCountHold}
       clearCloneSetCountHold={clearCloneSetCountHold}