fix(core): 删脚本分镜联动删故事板帧 + 演员库自取 person + 分镜编辑行抽组件

- views.py: delete-script-segment 同步删对应 StoryboardFrame(原 SET_NULL 留孤儿帧致故事板仍显示已删的场),并重排剩余帧 sort_order
- actor-library.tsx: 演员库改自取 person 资产(全局 assets 已懒加载不再全量预载,否则演员库全空),保存后 reload 即时入列
- pipeline.tsx: 抽出 EditableShotField 组件、PromptBox 参数化
- 附 perf-report 产物

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

core/backend/apps/projects/views.py

@@ -43,6 +43,8 @@ from .models import (
     ProjectStage,
     ScriptSegment,
     ScriptVersion,
+    StoryboardFrame,
+    StoryboardVersion,
     SubtitleTrack,
     Timeline,
     TimelineClip,
@@ -429,6 +431,15 @@ class ProjectViewSet(TeamScopedViewSetMixin, ModelViewSet):
         script = segment.script_version
         if script.segments.count() <= 1:
             return Response({"detail": "至少保留一个分镜"}, status=status.HTTP_400_BAD_REQUEST)
+        # 删本场脚本时,它对应的故事板分镜帧也一起删 —— frame.script_segment 是 SET_NULL,
+        # 不主动删会留下孤儿帧,故事板里仍显示这一(已删的)场。各版本受影响的帧统一收口后重排 sort_order。
+        affected_storyboards = list(StoryboardVersion.objects.filter(frames__script_segment=segment).distinct())
+        StoryboardFrame.objects.filter(script_segment=segment).delete()
+        for sb in affected_storyboards:
+            for index, frame in enumerate(sb.frames.order_by("sort_order")):
+                if frame.sort_order != index:
+                    frame.sort_order = index
+                    frame.save(update_fields=["sort_order", "updated_at"])
         segment.delete()
         for index, seg in enumerate(script.segments.order_by("sort_order")):
             if seg.sort_order != index: