The shared asker (buildrun.Asker.Wait) answers an ended step whole: a key naming its answer as output-object has it read
through the build seat's verb output on the step's node (Step.Whole) with the asker's Outputs, so the checker's judge,
manifests judge, checking program and compose sandbox read the answer as before; a step whose object cannot be read is
the wait's error. The checker reads its run asks' failed key's answer for a program that exited other than 0. The
checker, the indexer and the assigner read a kept answer through process.Conn.CallFile (A-291), which receives the
verb's chunks; the checker's manifest invokes the three build seats' output.
Builds: design 47 G A-290, A-291, A-254
Claude-Session: https://claude.ai/code/session_01NcbgfGKaxw984XyAPfLm4h
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