{
  "project_id": "28052026-002-Tran-Quang-Dieu-Bui-Thi-Xuan",
  "step": 5,
  "status": "approved",
  "provider": "gen-img-gpt",
  "model": "cx/gpt-5.5-image",
  "canvas_rule": "16:9 landscape character reference concept sheet; reject portrait/square/3:2.",
  "style_reference": "sepia parchment Vietnamese historical concept sheet, muted brown/ochre/charcoal ink wash, identity locking only, not final scene.",
  "references": [
    {
      "character_id": "tran_quang_dieu",
      "name": "Trần Quang Diệu",
      "priority": "required",
      "output_path": "/data/video-pipeline/Youtube-Video-Maker/Project/28052026-002-Tran-Quang-Dieu-Bui-Thi-Xuan/images/refs/tran_quang_dieu_ref.png",
      "status": "generated",
      "bytes": 3044339,
      "validation": {
        "width": 1672,
        "height": 941,
        "ratio": 1.777,
        "is_landscape_16_9_like": true
      },
      "approval": "approved"
    },
    {
      "character_id": "bui_thi_xuan",
      "name": "Bùi Thị Xuân",
      "priority": "required",
      "output_path": "/data/video-pipeline/Youtube-Video-Maker/Project/28052026-002-Tran-Quang-Dieu-Bui-Thi-Xuan/images/refs/bui_thi_xuan_ref.png",
      "status": "generated",
      "bytes": 2982424,
      "validation": {
        "width": 1672,
        "height": 941,
        "ratio": 1.777,
        "is_landscape_16_9_like": true
      },
      "approval": "approved"
    },
    {
      "character_id": "quang_trung",
      "name": "Nguyễn Huệ / Quang Trung",
      "priority": "recommended",
      "output_path": "/data/video-pipeline/Youtube-Video-Maker/Project/28052026-002-Tran-Quang-Dieu-Bui-Thi-Xuan/images/refs/quang_trung_ref.png",
      "status": "generated",
      "bytes": 2955461,
      "validation": {
        "width": 1672,
        "height": 941,
        "ratio": 1.777,
        "is_landscape_16_9_like": true
      },
      "approval": "approved"
    },
    {
      "character_id": "nguyen_anh",
      "name": "Nguyễn Ánh / Gia Long",
      "priority": "recommended",
      "output_path": "/data/video-pipeline/Youtube-Video-Maker/Project/28052026-002-Tran-Quang-Dieu-Bui-Thi-Xuan/images/refs/nguyen_anh_ref.png",
      "status": "generated",
      "bytes": 2902580,
      "validation": {
        "width": 1672,
        "height": 941,
        "ratio": 1.777,
        "is_landscape_16_9_like": true
      },
      "approval": "approved"
    }
  ],
  "validation": {
    "required_refs_exist": true,
    "approved_by_user": true,
    "notes": "Generate refs then stop for user approval before Step 6.",
    "all_refs_exist": true,
    "all_16x9_landscape": true
  }
}