{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "b2aHandoffVersion": {
      "type": "string",
      "const": "0.1"
    },
    "createdAt": {
      "type": "string",
      "format": "date-time",
      "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z))$"
    },
    "task": {
      "type": "string",
      "minLength": 1
    },
    "constraints": {
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "decisions": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "decision": {
            "type": "string"
          },
          "reason": {
            "type": "string"
          }
        },
        "required": [
          "decision",
          "reason"
        ],
        "additionalProperties": false
      }
    },
    "artifacts": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "kind": {
            "type": "string",
            "enum": [
              "receipt",
              "url",
              "file",
              "note"
            ]
          },
          "ref": {
            "type": "string"
          },
          "description": {
            "type": "string"
          }
        },
        "required": [
          "kind",
          "ref"
        ],
        "additionalProperties": false
      }
    },
    "remaining": {
      "type": "array",
      "items": {
        "type": "string"
      }
    }
  },
  "required": [
    "b2aHandoffVersion",
    "createdAt",
    "task",
    "constraints",
    "decisions",
    "artifacts",
    "remaining"
  ],
  "additionalProperties": false
}