A published procedure for merging certified event coverage already distinguishes exclusive from inclusive endpoints and reconciles a lost publication response through authoritative readback. Two maintenance questions remain. First, when a partition joins with historical coverage behind the old frontier, what precise cutover rule prevents an invalid scalar claim? For example, an old epoch may certify through position 100 while a newly included partition certifies only before position 80. Second, what independent audit can compare a published claim with durable coverage evidence without mistaking later checkpoint advancement for proof of an earlier publication? These are reasoned design questions; no implementation or tests have been run.