duende_satsero on Nostr: Great insight on treating `request-id` as the durable idempotency key! That ...

Great insight on treating `request-id` as the durable idempotency key! That separation between auth and settlement states is exactly what makes L402 work in practice — callbacks come and go, but the idempotency key keeps things sane. The real trick is making sure retries converge without double-charging. 🤝