ReadonlyclientThe reporting client's self-minted id — two surfaces healing are two discoveries.
ReadonlyfieldsThe state fields whose values differed ([] when the whole row appeared/vanished).
ReadonlyhadThe newest revision the client had seen when it detected the gap.
ReadonlyidThe instance, in the id spelling the frames carry.
ReadonlynoticedHow the divergence was noticed.
ReadonlypathThe row's path template, e.g. /channel/{kind}/{index}/delay.
What a client reports when it corrected one row it had wrong.