feat(core): 脚本 agent 体感打磨 — skill松绑/对白去重/模型自写收尾/品牌遮罩/删除提速

- skill:旁白/对白每镜交给模型按内容判断(去掉「默认旁白·对白按门槛」);visual 加厚撑满15秒
- 脚本 agent:输出协议加收尾交付语 + _closing_summary → summary 事件(替写死的「已生成」)
- 前端:有对白的镜不再重复显旁白;summary 当 AI 气泡;进度时间轴 @keyframes 嵌套失效→移顶层(动画真跑起来)
- 生成遮罩改品牌生成卡(icon-box转圈+标题+动态点+橙扫光条);AI全生确定后不再闪三菜单
- 删除分镜:不再误显改写罩子(拆 rewriteShot);放开「至少保留一个分镜」可删空;删除提速(后端 bulk_update + 前端 liteRefresh)
- 去掉脚本助手标题旁冗余的模型名

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

core/frontend/src/App.tsx

@@ -369,7 +369,7 @@ export function App() {
   // 用 ref 而非 loading state,避免闭包拿到旧值;同步置位,任何同一 tick 的二次点击都拦得住。
   const actionInFlightRef = useRef(false);
 
-  async function action<T>(work: () => Promise<T>, successText: string): Promise<T | null> {
+  async function action<T>(work: () => Promise<T>, successText: string, opts?: { liteRefresh?: boolean }): Promise<T | null> {
     if (actionInFlightRef.current) {
       setNotice({ type: "error", text: "操作进行中,请稍候…" });
       return null;
@@ -383,7 +383,8 @@ export function App() {
       if (successText) setNotice({ type: "success", text: successText });
       // 后台刷新,不阻塞操作返回:全量 loadData 会分页拉全部 assets 很重,await 它会让
       // 「项目已创建/确认脚本」后白等很久(行29/37)。改为后台 hydrate,操作立即返回。
-      void loadData();
+      // liteRefresh(改/删/加分镜等只动脚本、不动商品/资产的轻操作):跳过全量 loadData,只刷项目详情 → 快很多。
+      if (!opts?.liteRefresh) void loadData();
       void refreshProjectDetail();
       return result;
     } catch (error) {
@@ -803,10 +804,10 @@ export function App() {
         unreadCount={unreadCount}
         avatarChar={avatarChar}
         logout={logout}        onAdoptScript={(scriptId) => action(() => api.adoptScript(pipelineProject.id, scriptId), "脚本已采用")}
-        onUpdateShot={(payload) => action(() => api.updateScriptSegment(pipelineProject.id, payload), "分镜已更新")}
-        onAddShot={(afterSegmentId, content) => action(() => api.addScriptSegment(pipelineProject.id, { after_segment_id: afterSegmentId, ...content }), "分镜已添加")}
-        onDeleteShot={(segmentId) => action(() => api.deleteScriptSegment(pipelineProject.id, { segment_id: segmentId }), "分镜已删除")}
-        onRerunShot={(segmentId, instruction) => action(() => api.rerunScriptSegment(pipelineProject.id, { segment_id: segmentId, instruction }), "分镜已重跑")}
+        onUpdateShot={(payload) => action(() => api.updateScriptSegment(pipelineProject.id, payload), "分镜已更新", { liteRefresh: true })}
+        onAddShot={(afterSegmentId, content) => action(() => api.addScriptSegment(pipelineProject.id, { after_segment_id: afterSegmentId, ...content }), "分镜已添加", { liteRefresh: true })}
+        onDeleteShot={(segmentId) => action(() => api.deleteScriptSegment(pipelineProject.id, { segment_id: segmentId }), "分镜已删除", { liteRefresh: true })}
+        onRerunShot={(segmentId, instruction) => action(() => api.rerunScriptSegment(pipelineProject.id, { segment_id: segmentId, instruction }), "分镜已重跑", { liteRefresh: true })}
         onSaveProjectMeta={(meta) =>
           // metadata 是整体替换:合并现有 project.metadata 后再 PATCH,别把别的 key(wizard 等)冲掉
           action(() => api.updateProject(pipelineProject.id, { metadata: { ...(pipelineProject.metadata ?? {}), ...meta } }), "已保存")