- face_features.py:_PROMPT 只问6项特征(+有无人脸),analyze_features 只返回6个英文字段;无人脸返回 None(不再依赖 has_face 在外部判定) - gateway/app.py:无脸判定改为 feats is None,去掉 has_face import - app.py / docs / test_interface4.html:Swagger/文档/示例/测试页同步 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>