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xiaoxia-saas/packages/shared
xiaoxia 0cf7f14992
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feat(viral-video): VLM提速+商品描述增强+爆款结构注入(问题4/5/6)
问题4:图片分析提速
- 新增 doubao_vision_lite_model 配置(默认 doubao-1-5-vision-lite-250915)+ doubao_vision_use_lite 开关
- call_vision 支持 model/max_tokens/temperature/timeout/system_prompt 参数覆盖
- _step_image_analysis 改 ThreadPoolExecutor 并行调用 VLM(max_workers=min(4,n_images)),lite 模型 timeout=30s,max_tokens=1024
- 图片直接传公网 OSS URL 给豆包视觉,无需本地下载-上传链路(原流程已是直传,保持)

问题5:VLM 商品描述增强(对齐竞品截图2粒度)
- 新 _IMAGE_ANALYSIS_SYSTEM_PROMPT 要求输出 16 个字段:name/brand/category/spec/appearance/packaging/text_on_package/colors/material_or_texture/key_features/visual_style/scene/suitable_scenes/target_audience/selling_points/summary
- appearance(外观80-150字)+packaging(包装80-150字)要求自然语言细节描述,summary(150-250字)直接给前端展示
- 严禁编造:看不清/没有的统一填「无法判断」,text_on_package 只 OCR 清晰可见的
- _build_products_summary 优先用 VLM 返回的 summary 段(自然段落给编导模型效果最好),兜底再拼结构化字段
- _analyze_single_image 独立函数,所有新字段都有 setdefault 防御,兼容旧字段名

问题6:爆款结构(copy_structure → viral_structure)透传
- 后端现有 schema 已支持 viral_structure 字段,STEP2 generate-copy 也已传,本次把 viral_structure 注入 _SCRIPT_GENERATION_PROMPT
- prompt 新增「爆款结构」字段+关键要求第8条:必须严格按该结构节奏/段落顺序编排镜头台词
- 前端 STRUCTURES 从 4 个扩展到 19 个(按协调 Agent 提供的中文列表)
- 一键路径 generateViralVideo 已传 viral_structure,无需改动

其它:
- .env.example 补 DOUBAO_VISION_MODEL/LITE_MODEL/USE_LITE 三个配置项
- scripts/render_env.sh 把新变量加入 SHARED_SECRETS 白名单

验收:单图分析目标 10-15s(lite 模型+并行),VLM 返回 6 维度丰富描述+summary,copy_structure 影响文案结构
2026-10-02 09:54:44 +08:00
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