Answer A-254: a run's step-ended carries its answer

Claude-Session: https://claude.ai/code/session_01NcbgfGKaxw984XyAPfLm4h
2026-11-12 09:41:28 +01:00
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commit ff669cc720
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@@ -287,3 +287,8 @@ the principle that settles it, cited as "design 47 G A-n".
  revision's node-engine entry differs from the trunk's, that build serves every machine. One run ask per machine.
 - **A-253** (A-249; principle 8) The tool runner hands a bundle a chunked answer as the verb's own answer with the
  whole file added as the member `file` (base64).
+- **A-254** (§712, §354, A-240, A-247, ADR 0596; principles 1, 2 and 7) A build seat's `step-ended` of a run carries
+  the run's answer (its standard output's last line): inline as `output` up to the event bound, else as
+  `output-object`, the name of an object the build seat keeps, read through the seat's verb `output` answered in
+  chunks. Every build seat (`node-build-go`, `node-build-image`, `node-build-node`) says it the same way, from the
+  shared step runner; no asker reads the seat's step state.