{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "gno://schemas/error@1.0",
  "title": "GNO Error Response",
  "description": "Error response for CLI JSON output",
  "type": "object",
  "required": ["error"],
  "properties": {
    "error": {
      "type": "object",
      "required": ["code", "message"],
      "properties": {
        "code": {
          "type": "string",
          "description": "Error code matching exit code",
          "enum": ["VALIDATION", "RUNTIME"]
        },
        "message": {
          "type": "string",
          "description": "Human-readable error message"
        },
        "details": {
          "type": "object",
          "description": "Additional error context",
          "additionalProperties": true
        }
      }
    }
  }
}