{
  "schemaVersion": "1.0.0",
  "kind": "nandarona.asset-provenance",
  "releaseId": "amatsugi@2.3.0",
  "rightsOwner": "nandarona",
  "review": {
    "status": "human-reviewed",
    "reviewedAt": "2026-07-30",
    "checks": [
      "identity",
      "family distinction",
      "state readability",
      "prohibited elements",
      "source path"
    ]
  },
  "referenceAsset": {
    "publicPath": "/characters/platform/weather/amatsugi.png",
    "repositorySource": "assets/characters/weather/design/amatsugi-expressions-v1.png"
  },
  "expressionAsset": {
    "repositorySource": "assets/characters/weather/design/amatsugi-expressions-v1.png",
    "creationMethod": "OpenAI built-in ImageGen generation from the official Weather Signs design contract, followed by human visual review",
    "promptContract": {
      "useCase": "stylized-concept",
      "requiredStates": [
        "dry",
        "first-drop",
        "interval",
        "shower",
        "rain-gap",
        "clear"
      ],
      "invariants": [
        "縦に連なる三滴と、その間に浮く小さな空白環",
        "雨脚の間隔とタイムスロット",
        "preserve the face-free field phenomenon, individual signal system, environmental silhouette, and shape-based state redundancy",
        "states must differ through structural action rather than recoloring"
      ],
      "avoid": [
        "単なる時計アイコンにしない",
        "涙や悲しみの記号へ固定しない",
        "二つ目を追加しない",
        "extra characters",
        "watermark"
      ]
    }
  },
  "licenseScope": "Released artifacts are offered under CC BY 4.0; third-party rights and official endorsement are not granted."
}