consecutive whole windows the warming chain survived without a re-creation
cold boots met during this window; the observation for an interval past hibernation
the warm re-arm this object has converged on; see solveWarmInterval
Optionallastwhen the newest render of the last rolled batch arrived; the idle fade's clock
The render count that survives hibernation: the arrival ring is in memory and dies with the incarnation, so between 505 and 8,640 renders/day every wake would read rate 0.
One
cfw_metarow (counter plus window start), flushed on the 15-minute window boundary rather than every tick, which caps it at 96 rows/day (a write per idle tick was 32.4% of free's budget).