The part build-step gains the verb `output` (the ask and the call in, the ask and the chunk count out, marked chunks, read by the
askers of a run), and the fields output and output-object of step-ended name the run's answer inline or as an object the holder
keeps. The three seats' fixtures carry the verb; the generated Go and TypeScript follow.
Builds: design 47 G A-254, A-139, §712, §354
Claude-Session: https://claude.ai/code/session_01NcbgfGKaxw984XyAPfLm4h
jschoubben
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