{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://one-person-ops.local/contract-check/validation-receipt.schema.json",
  "title": "ValidationReceiptV1",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "contract_version",
    "request_id",
    "schema_sha256",
    "input_sha256",
    "validator_version",
    "valid",
    "errors",
    "processed_at"
  ],
  "properties": {
    "contract_version": { "type": "string", "const": "ValidationReceiptV1" },
    "request_id": { "type": ["string", "null"] },
    "schema_sha256": { "type": ["string", "null"], "pattern": "^([a-f0-9]{64})?$" },
    "input_sha256": { "type": ["string", "null"], "pattern": "^([a-f0-9]{64})?$" },
    "validator_version": { "type": "string" },
    "valid": { "type": "boolean" },
    "errors": {
      "type": "array",
      "maxItems": 100,
      "items": {
        "type": "object",
        "additionalProperties": false,
        "required": ["path", "code", "expected", "actual_type", "hint"],
        "properties": {
          "path": { "type": "string" },
          "code": { "type": "string" },
          "expected": { "type": "string" },
          "actual_type": { "type": "string" },
          "hint": { "type": "string" }
        }
      }
    },
    "processed_at": { "type": "string", "format": "date-time" }
  }
}