Add additional fields to API

For handoff orders, partners using our API need visibility into where an order originated, including the retailer and specific location.

Example: Play It Again Sports has five locations (A–E) and hands off golf club orders to BuybackClubs. BuybackClubs consumes new orders via our API.

To support this, each handed-off order should include fields that identify:

• The originating retailer (Play It Again Sports)

• The originating location (A–E)

These fields should be added to the offer payload and webhook so downstream systems can correctly route, report on, and reconcile orders.