feat(viral-video): v1.6 单次Seedance出片+编导分镜脚本 #2124

- 输出从营销口播文案改为专业编导分镜脚本（CopyResult v1.6：overview/scene_and_lighting/shots/hard_constraints/negative_prompts/voiceover_script）
- 新 SCRIPT_GENERATION 阶段替代原 copy_fusion+storyboard+review，prompt 指导 LLM 输出严格 JSON 结构
- pipeline 简化为4步：图片分析 → 编导脚本 → TTS整段合成(上传OSS做reference_audios) → 单次Seedance出片 → 上传
- 删除：多段分镜拆分、ffmpeg concat拼接、placeholder占位视频、分段重试降级、BGM单独混音（Seedance generate_audio=true原生合成音效/BGM）
- ai_client/ai_service video_generation 支持 reference_images/reference_audios/reference_videos/generate_audio 参数
- duration 默认15秒，上限30秒；前端时长下拉 5/10/15/20/25/30s
- 首帧图模式不传 ratio（保持 #2110 修复）
- Alembic migration 088 幂等添加 voice_id/voice_source/video_ratio/video_model/copy_result 五列
- _step_image_analysis call_vision() 全路径 None 防护
- 向后兼容：final_copy=voiceover_script、storyboard=shots、老数据 _build_copy_result 降级拼装
- TS types 更新 CopyResult v1.6 结构 + ShotScript/Overview
- 96个 viral 相关单测全通过

packages/adapters/sqlalchemy_impl/models.py

@@ -954,6 +954,9 @@ class ViralVideoJobModel(Base):
     image_analysis = Column(JSON, nullable=True)
     storyboard = Column(JSON, nullable=True)
     generated_copy_text = Column(Text, nullable=False, default="")
+    copy_result = Column(
+        JSON, nullable=True
+    )  # v1.6: 编导脚本结构{overview,scene_and_lighting,shots,hard_constraints,negative_prompts,voiceover_script}
     result_video_url = Column(String(1000), nullable=False, default="")
     credits_cost = Column(Integer, nullable=False, default=0)
     error_msg = Column(Text, nullable=False, default="")

packages/adapters/sqlalchemy_impl/session.py

@@ -88,6 +88,7 @@ _VIRAL_VIDEO_BACKFILL_COLS = [
     ("voice_source", "VARCHAR(20) NOT NULL DEFAULT ''"),
     ("video_ratio", "VARCHAR(10) NOT NULL DEFAULT '9:16'"),
     ("video_model", "VARCHAR(100) NOT NULL DEFAULT ''"),
+    ("copy_result", "JSON"),
 ]
 
 

packages/adapters/sqlalchemy_impl/viral_video_repository.py

@@ -24,7 +24,7 @@ def _to_domain(model: ViralVideoJobModel) -> ViralVideoJob:
         viral_structure=model.viral_structure or "",
         marketing_purpose=model.marketing_purpose or "",
         bgm_preference=model.bgm_preference or "",
-        duration=model.duration or 30,
+        duration=model.duration or 15,
         user_copy_text=model.user_copy_text or "",
         fusion_level=model.fusion_level or "ai_polish",
         reference_audio_path=model.reference_audio_path or "",
@@ -41,6 +41,7 @@ def _to_domain(model: ViralVideoJobModel) -> ViralVideoJob:
         image_analysis=dict(model.image_analysis) if getattr(model, "image_analysis", None) else None,
         storyboard=list(model.storyboard) if getattr(model, "storyboard", None) else None,
         generated_copy_text=getattr(model, "generated_copy_text", "") or "",
+        copy_result=dict(model.copy_result) if getattr(model, "copy_result", None) else None,
         result_video_url=model.result_video_url or "",
         credits_cost=model.credits_cost or 0,
         error_msg=model.error_msg or "",
@@ -86,6 +87,7 @@ class SQLAlchemyViralVideoJobRepository:
             image_analysis=job.image_analysis,
             storyboard=job.storyboard,
             generated_copy_text=job.generated_copy_text,
+            copy_result=job.copy_result,
             result_video_url=job.result_video_url,
             credits_cost=job.credits_cost,
             error_msg=job.error_msg,
@@ -108,6 +110,7 @@ class SQLAlchemyViralVideoJobRepository:
         model.image_analysis = job.image_analysis
         model.storyboard = job.storyboard
         model.generated_copy_text = job.generated_copy_text or ""
+        model.copy_result = job.copy_result
         model.result_video_url = job.result_video_url
         model.credits_cost = job.credits_cost
         model.error_msg = job.error_msg