عرض عملي: طلب استرداد يُوجَّه إلى موافقة بشرية

خطوة بخطوة

1. Define request_refund(orderId, reason); it inserts a PENDING refund request.
2. Add an idempotency key (order id plus reason hash); a repeat returns the existing request.
3. Build the approval endpoint used by a support agent; only that role can execute the refund.
4. Add loop limits (steps, time, cost) and show the loop stopping.
5. Planned mistake: let the tool call the payment API directly "to save a step"; the test "no side effect without approval" fails. Fix by moving execution behind approval.
6. Show the audit record: requester, approver, arguments.