Stress run with a real orchestrator subagent showed the per-task keys buried in results[] were not relayed
upward; the same prose lines now sit at the top of the sync delegate_task result. evals/subagent_process_handoff/
stress_handoff_live.py runs 12 real parent+child scenarios (handoff, orphan, unread, clean read, cap, exited refusal,
mixed fan-out, parent controlling the inherited process, sibling theft incl. adversarial, nested orchestrator,
5-way burst) and scores them against runtime accounting, never model prose.
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