具有身份鎖定的 2x2 網格照片生成

```json
{
  "generation_request": {
    "meta_data": {
      "tool": "NanoBananaPro",
      "task_type": "photorealistic_multi_panel_grid",
      "version": "v1.0",
      "priority": "high"
    },
    "output_settings": {
      "layout": {
        "type": "2x2_grid",
        "border": "thin_cream_gutter",
        "frame_consistency_rule": "same_person_same_outfit_same_field"
      },
      "aspect_ratio": "4:5",
      "resolution": "ultra_high_res",
      "render_style": "analog_film_kodak_portra_400"
    },
    "reference_constraints": {
      "character_reference_image": "UPLOAD_REF_IMAGE",
      "use_reference_face_only": true,
      "identity_lock": true,
      "strict_face_match": true,
      "preserve_facial_structure": true,
      "preserve_skin_tone": true,
      "preserve_hair": true,
      "no_face_mixing": true,
      "no_extra_people": true
    },
    "global_prompt": {
      "scene": "黃昏時分的金色草地。溫暖的鏡頭光暈，塵埃在光線中飛舞。可見方格野餐毯。夢幻、浪漫、柔焦氛圍。",
      "subject": {
        "type": "年輕成年女性",
        "identity": "與參考圖像中的人物相同",
        "hair": "波浪散髮，半紮髮型繫有絲帶",
        "makeup": "裸妝感，陽光親吻的雀斑，紅潤的臉頰",
        "outfit": "白色亞麻擠奶女工洋裝，泡泡袖和馬甲細節，赤腳",
        "prop": "復古精裝書和一顆青蘋果"
      },
      "camera": {
        "capture": "類比膠片",
        "lens_equivalent": "50mm",
        "focus": "柔焦",
        "depth_of_field": "中景深"
      }
    },
    "frames": [
      {
        "frame_id": "A",
        "position": "top_left",
        "shot_type": "高角度俯視",
        "pose": "仰臥在野餐毯上，將書舉過臉部以遮擋陽光，頭髮散開。",
        "expression": "俏皮，大笑"
      },
      {
        "frame_id": "B",
        "position": "top_right",
        "shot_type": "坐姿側面",
        "pose": "盤腿而坐，咬著青蘋果，望向日落的地平線。",
        "expression": "平靜，滿足"
      },
      {
        "frame_id": "C",
        "position": "bottom_left",
        "shot_type": "半身照",
        "pose": "穿過高高的草地，手輕拂麥穗頂端，回頭望向鏡頭。",
        "expression": "誘人，自然"
      },
      {
        "frame_id": "D",
        "position": "bottom_right",
        "shot_type": "微距特寫",
        "pose": "特寫手持打開的書，臉部在背景中略微失焦。",
        "expression": "專注閱讀"
      }
    ]
  }
}
```