StepEnded.ReadOutput takes the inline `output`, else asks the seat's verb output on the node that ran the ask for the object
`output-object` names (the runtime hands the chunks as the member `file`, A-249); a step-ended with both is refused.
Builds: design 47 G A-254, A-240, A-247
Claude-Session: https://claude.ai/code/session_01NcbgfGKaxw984XyAPfLm4h