JSON to Scala 3 & Scala 2 Case Class Generator

package com.example.models

import java.time.Instant

import io.circe._
import io.circe.generic.semiauto._
import io.circe.syntax._

final case class Customer(
  customerId: String,
  email: String,
  fullName: String,
  loyaltyTier: String,
  registeredAt: Instant
) derives Codec.AsObject

final case class ShippingAddress(
  street: String,
  city: String,
  state: String,
  postalCode: String,
  country: String
) derives Codec.AsObject

final case class LineItem(
  sku: String,
  title: String,
  unitPrice: BigDecimal,
  quantity: Int,
  taxRate: BigDecimal,
  inStock: Boolean
) derives Codec.AsObject

final case class Payment(
  transactionRef: String,
  method: String,
  isAuthorized: Boolean,
  paidAt: Instant
) derives Codec.AsObject

final case class OrderPayload(
  orderId: String,
  orderNumber: String,
  customer: Customer,
  shippingAddress: ShippingAddress,
  lineItems: List[LineItem],
  subtotal: BigDecimal,
  taxAmount: BigDecimal,
  totalAmount: BigDecimal,
  currency: String,
  payment: Payment,
  discountCode: Option[String] = None,
  notes: String
) derives Codec.AsObject