{
  "schemaVersion": "1.0.0",
  "kind": "nandarona.asset-provenance",
  "releaseId": "sasou@2.2.0",
  "rightsOwner": "nandarona",
  "review": {
    "status": "human-reviewed",
    "reviewedAt": "2026-07-30",
    "checks": [
      "identity",
      "family distinction",
      "state readability",
      "prohibited elements",
      "source path"
    ]
  },
  "referenceAsset": {
    "publicPath": "/characters/platform/tools/sasou.png",
    "repositorySource": "assets/characters/tools/design/sasou-expressions-v2.png"
  },
  "expressionAsset": {
    "repositorySource": "assets/characters/tools/design/sasou-expressions-v2.png",
    "creationMethod": "OpenAI built-in ImageGen generation from the official Between Tools design contract, followed by human visual review",
    "promptContract": {
      "useCase": "stylized-concept",
      "requiredStates": [
        "idle",
        "crack-open",
        "signal",
        "invite",
        "wait-choice",
        "welcome"
      ],
      "invariants": [
        "細い視覚線を持つ半開きの扉",
        "折り畳みウェルカムマーカー",
        "preserve mouthless identity, the individual slit, dot, lens, line, or indicator signal, and the abstract everyday-tool silhouette",
        "states must differ through structural action rather than recoloring"
      ],
      "avoid": [
        "生体器官や内臓のように描かない",
        "全個体へ同じ大きな二つ目を追加しない",
        "色替えだけで別個体にしない",
        "extra characters",
        "watermark"
      ]
    }
  },
  "licenseScope": "Released artifacts are offered under CC BY 4.0; third-party rights and official endorsement are not granted."
}
