The relay's delivery child shared one 600s deadline between the target's turn
and the one-shot exit linger, whose own budget is the same 600s — so a turn that
answered in seconds and then handed off to a teammate was killed mid-linger,
reported to the sender as delivery_timeout (auto-retried: the turn ran twice),
its reply lost, and the handoff delivery the linger protected destroyed.
The -Q child's turn report (#113608) now carries the answer the run will print,
rewritten when a follow-up turn displaces it, and the poll loop that books a
child from that report moves next to the contract as
quiet_single_query.run_reported_turn. The cron lane keeps its policy (book after
a 2s exit grace); the relay waits for exit under the cap as before — a teammate's
reply during the linger may still become the printed answer — and at the cap
books a reported child from its latest report and leaves it to finish. Only a
turn that never ends is a timeout. The report is 0600 from creation now that it
carries the answer.
Fixes#114980
76a486a1eb