Still a prototype, but great progress for #nostr #safebox

- Automatic multi-mint support for Lightning payments and issuing/accepting Cashu tokens.

- Swapping and consolidating all mint proofs into highest amount possible and combining into single event.

- Accepting payment using Lightning address openbalance.app where payment is converted into Cashu token and sent by NIP-04 dm.

Plus general evolution of the concept of a safebox wallet that exists in the #nostr network untouchable by anyone except for the nsec holder.