fix(#2174 P0): 信任链i2i改为t2i文生图,实测通过Seedance肖像审核 #2175

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xiaoxia merged 2 commits from feat/2174-trust-chain-t2i into develop 2026-10-04 15:49:07 +08:00
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xiaoxia added 1 commit 2026-10-04 15:33:12 +08:00
fix(#2174 P0): 信任链从i2i改为t2i文生图——方舟实测验证通过
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0e78f175fe
#2170/#2172的信任链用Seedream图生图(i2i,传reference_images=用户真人照),
实测产物不被Seedance信任,仍被400 portrait_intercept拦截。

方舟文档+实测确认:信任的是Seedream文生图(t2i)产物——纯prompt描述人物,
不传reference_images,产物是纯模型生成人像,同账号30天内可直接传Seedance。

改动:
- VLM prompt新增portrait_prompt字段(60-100字人物外貌描述)
- preheat_trust_chain签名从portrait_urls改为portrait_descriptions,t2i模式不传reference_images
- video_generation移除现场跑i2i逻辑,仅使用预热好的t2i结果;预热失败走#2166自动降级t2v
- 预热时机从VLM前改为VLM后(需要VLM输出的portrait_prompt),仍与文案阶段并行
- 单测适配:TestTrustChain全部改为pre_trusted_images路径验证

实测验证(充值后):
- Seedream flash t2i ~15s出图,人像prompt中英文混合写实风格
- Seedance 2.5 i2v用t2i产物URL → 成功出5s视频(120s)
- Seedance 2.0-mini i2v用t2i产物URL → 成功出5s视频
- 对照组直传用户真人照片 → 400 portrait_intercept(预期)

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auto-approve-bot added 1 commit 2026-10-04 15:39:14 +08:00
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07cf055a97
xiaoxia merged commit 718deb32b9 into develop 2026-10-04 15:49:07 +08:00

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🗑️ **预览环境已清理** PR #2175 已关闭或合并,对应的预览环境已被清理。 > 如有需要,可以重新打开 PR 来重新生成预览环境。
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