{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "required": [
    "schemaVersion",
    "generatedAt",
    "baselineDigest",
    "currentDigest",
    "compatibility",
    "failures",
    "registries"
  ],
  "properties": {
    "schemaVersion": { "const": 2 },
    "generatedAt": { "type": "string", "format": "date-time" },
    "baselineDigest": {
      "type": "string",
      "pattern": "^[a-f0-9]{64}$"
    },
    "currentDigest": {
      "type": "string",
      "pattern": "^[a-f0-9]{64}$"
    },
    "compatibility": {
      "type": "object",
      "required": ["impact", "changes"],
      "properties": {
        "impact": {
          "enum": ["none", "additive", "behavior-change", "breaking"]
        },
        "changes": { "type": "array" }
      },
      "additionalProperties": false
    },
    "failures": { "type": "array", "maxItems": 0 },
    "registries": {
      "type": "array",
      "minItems": 10,
      "maxItems": 10,
      "items": {
        "type": "object",
        "required": [
          "registryId",
          "owner",
          "source",
          "rowCount",
          "contract",
          "rows"
        ]
      }
    }
  },
  "additionalProperties": false
}