{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://wanxiang.ai/contracts/play-loop/match3-visual-audit.schema.json",
  "title": "Match3VisualAuditV1",
  "type": "object",
  "required": [
    "schemaVersion", "artifactHash", "transactionId", "transactionHash", "moveId",
    "visualTransactionRef", "visualTransactionHash", "matchedCells", "cascadeCount",
    "visualSettlementFrameRef", "visualSettlementFrameHash", "status"
  ],
  "properties": {
    "schemaVersion": { "const": "Match3VisualAudit/1" },
    "artifactHash": { "$ref": "#/$defs/sha256" },
    "transactionId": { "$ref": "#/$defs/id" },
    "transactionHash": { "$ref": "#/$defs/sha256" },
    "moveId": { "$ref": "#/$defs/id" },
    "visualTransactionRef": { "$ref": "#/$defs/ref" },
    "visualTransactionHash": { "$ref": "#/$defs/sha256" },
    "matchedCells": { "type": "array", "minItems": 3, "items": { "$ref": "#/$defs/cell" } },
    "cascadeCount": { "type": "integer", "minimum": 1, "maximum": 7 },
    "visualSettlementFrameRef": { "$ref": "#/$defs/ref" },
    "visualSettlementFrameHash": { "$ref": "#/$defs/sha256" },
    "status": { "const": "pass" }
  },
  "additionalProperties": false,
  "$defs": {
    "sha256": { "type": "string", "pattern": "^[0-9a-f]{64}$" },
    "id": { "type": "string", "pattern": "^[A-Za-z0-9][A-Za-z0-9._-]{0,127}$" },
    "ref": { "type": "string", "minLength": 1, "pattern": "^(?!/).+$" },
    "cell": {
      "type": "object", "required": ["row", "column"],
      "properties": {
        "row": { "type": "integer", "minimum": 1, "maximum": 8 },
        "column": { "type": "integer", "minimum": 1, "maximum": 8 }
      },
      "additionalProperties": false
    }
  }
}