{
  "type": "object",
  "required": [
    "email",
    "password",
    "name"
  ],
  "properties": {
    "email": {
      "$ref": "#/components/schemas/Email"
    },
    "name": {
      "type": "string"
    },
    "password": {
      "type": "string"
    },
    "referral_code": {
      "type": [
        "string",
        "null"
      ],
      "description": "Optional referral code for affiliate tracking"
    }
  }
}