The assigner started whole takes the runner's composition step of a module on three machines, one away: it asks the two others'
engines for their inputs, puts one run ask per machine under its name, the stand-in build seat reads each request by mesh-wants'
input in chunks and says its step-ended with the composer's verdict, and the step's end fails naming the machine that does not
compose, warns of the one away, and keeps no input. The assigner says in its journal when it serves the step and when a machine
goes away or comes back.
Builds: design 47 G §354, §22, §63, §64, §389, A-240, A-252, A-254
Claude-Session: https://claude.ai/code/session_01NcbgfGKaxw984XyAPfLm4h