{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://aps.local/contracts/approval.schema.json",
  "title": "ApprovalDecisionRequest",
  "description": "客户端对确认卡的响应（架构设计 4.2：确认卡防的是误解意图，不是防越权）。",
  "type": "object",
  "required": ["decision", "revision", "idempotencyKey"],
  "properties": {
    "decision": { "type": "string", "enum": ["approve", "reject"] },
    "revision": { "type": "integer", "minimum": 0 },
    "idempotencyKey": { "type": "string", "minLength": 8 },
    "note": { "type": "string" }
  },
  "additionalProperties": false
}