This is an explicitly authorized native background Agent regression reproduction. For this task use the native Agent tool with run_in_background:true, even though the usual orchestration guidance prefers delegate_task for background work. Launch exactly one general-purpose native Agent with this prompt:
"Wait 90 seconds using Bash command `python3 -c 'import time; time.sleep(90); print("DELAY_COMPLETE")'` with timeout 120000 and run_in_background:false. This foreground Python command is the delay fixture; do not use standalone sleep, Monitor, TaskOutput, background Bash, or return before DELAY_COMPLETE. Then call orchestrator_capabilities once. Select Codex and its cheapest available model, and call delegate_task with task 'Reply with exactly OK.' Use the returned next instruction to receive the completion, then report the raw delegation result and completion back to your parent. Do not launch another native Agent. Keep working until delegate_task returns; report errors verbatim, without retrying or changing the task."
After launching the native Agent, immediately reply exactly ROOT_STARTED and end your turn. Do not wait for it, use TaskOutput yourself, send followup messages, or keep the root turn open. When its eventual completion notification arrives, report the delegation result and delegated completion to the user. Do not report runtime model identifiers in prose.
