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/styles/pages/script-tokens-v5.css

@@ -142,6 +142,7 @@
 
 /* Upload zone */
 .script-eval-v5-upload-zone {
+  position: relative;
   border: 2px dashed var(--v5-border2);
   border-radius: 12px;
   padding: 22px 18px;
@@ -155,6 +156,37 @@
   background: var(--v5-green-deep);
 }
 
+.script-eval-v5-upload-zone.is-dragging {
+  border-color: var(--v5-green);
+  border-style: solid;
+  background: var(--v5-green-deep);
+}
+
+.script-eval-v5-upload-drop-overlay {
+  position: absolute;
+  inset: 0;
+  z-index: 10;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  gap: 10px;
+  border-radius: 12px;
+  background: rgba(0, 255, 136, 0.06);
+  color: var(--v5-green);
+  pointer-events: none;
+}
+
+.script-eval-v5-upload-drop-overlay .anticon {
+  font-size: 40px;
+  opacity: 0.8;
+}
+
+.script-eval-v5-upload-drop-overlay span {
+  font-size: 16px;
+  font-weight: 800;
+}
+
 .script-eval-v5-upload-icon {
   margin-bottom: 10px;
   font-size: 38px;
@@ -195,10 +227,11 @@
 }
 
 .script-eval-v5-upload-done {
+  position: relative;
   display: none;
   align-items: center;
   gap: 10px;
-  padding: 12px 14px;
+  padding: 12px 28px 12px 14px;
   border-radius: 8px;
   background: var(--v5-green-deep);
   border: 1px solid var(--v5-green-border);
@@ -208,6 +241,30 @@
   display: flex;
 }
 
+.script-eval-v5-upload-delete {
+  position: absolute;
+  top: 4px;
+  right: 4px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 18px;
+  height: 18px;
+  border: 0;
+  border-radius: 50%;
+  background: rgba(255, 255, 255, 0.12);
+  color: var(--v5-text3);
+  cursor: pointer;
+  font-size: 10px;
+  line-height: 1;
+  transition: background 0.15s, color 0.15s;
+}
+
+.script-eval-v5-upload-delete:hover {
+  background: rgba(255, 77, 103, 0.5);
+  color: #fff;
+}
+
 .script-eval-v5-upload-done .anticon {
   font-size: 16px;
   color: var(--v5-green);
@@ -218,7 +275,7 @@
   font-size: 13px;
   color: var(--v5-green);
   font-weight: 600;
-  flex: 1;
+  max-width: 16ch;
   overflow: hidden;
   text-overflow: ellipsis;
   white-space: nowrap;
@@ -2805,7 +2862,7 @@
   overflow: hidden;
   text-overflow: ellipsis;
   white-space: nowrap;
-  max-width: 8em;
+  max-width: 16em;
 }
 
 .script-eval-v5-uf-size {
@@ -3425,8 +3482,6 @@
     font-size: 13px;
   }
 }
-<<<<<<< HEAD
-=======
 
 /* Script review left panel overflow guard: keep actions available while history remains scrollable. */
 .script-eval-v5-left {
@@ -3935,4 +3990,3 @@
 .script-eval-v5.is-ready .script-eval-v5-status-dot {
   box-shadow: none;
 }
->>>>>>> c1c4086383ddd7c1c8c152c2d5a97a4f432fa260