The row-layout maintenance of the composition's KV scheme kv.
preparePrefill (a prefill cohort forms) routes every converting layer into
its delayed row layout, built with the scheme's kernel set; prepareBatch
(a prefilled row joins decode) routes a lego's storage to the batch layouts
and, when the scheme converts after a start, into the same delayed layouts.
A layout built from a lego hands back the lego's composition for the rows it
extracts.
The row-layout maintenance of the composition's KV scheme
kv.preparePrefill(a prefill cohort forms) routes every converting layer into its delayed row layout, built with the scheme's kernel set;prepareBatch(a prefilled row joins decode) routes a lego's storage to the batch layouts and, when the scheme converts after a start, into the same delayed layouts. A layout built from a lego hands back the lego's composition for the rows it extracts.