One entry in the /channel roster's clipped fold: a latched channel's own address, plus
the SAME at/count its own /channel/{kind}/{index}/clip row derives from the identical
store — the collection carries a fold of its members, never a second copy of their facts
(strip-order-row.ts's own law). A surface reading the roster learns WHICH channel latched,
WHEN, and how many times, without a subscription per strip.
One entry in the
/channelroster'sclippedfold: a latched channel's own address, plus the SAMEat/countits own/channel/{kind}/{index}/cliprow derives from the identical store — the collection carries a fold of its members, never a second copy of their facts (strip-order-row.ts's own law). A surface reading the roster learns WHICH channel latched, WHEN, and how many times, without a subscription per strip.