leon 86e268ae1c fix: 修复特征提取失败(错误码81929) ...

问题: extractFaceFeature 返回错误码 81929 (MERR_FSDK_FACEFEATURE_FACEDATA)

根本原因: detectFaces 返回的人脸信息缺少 faceData 字段，
而虹软 SDK 的 extractFaceFeature 必须要有这个字段才能提取特征

修复:
- FaceEngineManager.convertFaceInfoToList: 添加返回 faceData
- ArcPlugin.handleExtractFaceFeature: 接收并传递 faceData 参数
- Dart API: extractFaceFeature 添加 faceData 参数
- example: 传递 faceData 到特征提取调用

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-03-30 16:58:12 +08:00

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