逼真的解剖学锁定镜像自拍提示

```json
{
  "metadata": {
    "engine": "PX-LOCK-X",
    "prompt_version": "1.0.0",
    "generation_goal": "逼真的镜面自拍重现，姿势、解剖结构、环境、光照和服装零漂移",
    "determinism": {
      "pose_lock": true,
      "camera_lock": true,
      "composition_lock": true,
      "anatomy_lock": true,
      "environment_lock": true,
      "lighting_lock": true,
      "wardrobe_lock": true,
      "texture_lock": true,
      "deviation_tolerance": {
        "keypoint_px_at_4k": 6,
        "silhouette_iou_min": 0.94,
        "camera_shift_max_norm": 0.006
      }
    },
    "output_quality": {
      "resolution": "4K",
      "focus": "锐利清晰",
      "noise": "极小"
    }
  },
  "subject": {
    "identity": {
      "gender": "男性",
      "age_range": "30 岁出头",
      "ethnicity": "非洲裔加勒比人",
      "height_estimate_ft_in": "6'1\""
    },
    "face": {
      "shape": "长方形",
      "jawline": "宽阔有力",
      "cheekbones": "中等高度",
      "eyes": {
        "color": "深棕色",
        "gaze": "直视手机",
        "openness": "放松，半开",
        "expression": "平静，自信"
      },
      "nose": "鼻梁宽直",
      "lips": {
        "shape": "中等丰满",
        "parting": "微张"
      },
      "hair": {
        "style": "光头",
        "scalp_finish": "干净剃须",
        "detail_lock": true
      },
      "facial_hair": {
        "type": "络腮胡",
        "length": "短方型",
        "density": "浓密",
        "grooming": "脸颊和颈部线条干净"
      },
      "accessories": "无"
    },
    "skin": {
      "tone": "深暖棕色",
      "texture": "自然，带有沐浴后的微妙光泽",
      "body_hair": {
        "chest": "稀疏",
        "abs": "极少"
      },
      "moisture": "略微湿润"
    },
    "physique": {
      "build": "高度肌肉发达的运动型健美混合体",
      "proportions_inches": {
        "chest": 50,
        "waist": 33,
        "hips": 44
      },
      "upper_body": {
        "shoulders": "极其宽阔",
        "neck": "粗壮有力",
        "pectorals": "致密，圆润",
        "deltoids": "深层纹理",
        "arms": "粗壮，血管突出",
        "triceps": "马蹄形线条"
      },
      "core": {
        "abs": "厚实的六块腹肌，分离度深",
        "obliques": "线条清晰",
        "adonis_belt": "清晰可见"
      },
      "lower_body": {
        "quadriceps": "毛巾下粗壮且线条分明",
        "fat_level": "极低"
      },
      "advanced_anatomy": {
        "thoracic_depth_in": 9.5,
        "waist_depth_in": 5.2,
        "hip_depth_in": 7.5
      },
      "symmetry": "肌肉量和血管分布高度双侧平衡"
    }
  },
  "pose": {
    "stance": "正面站立",
    "orientation": "正对镜子"
  }
}
```