v2.7.41

What's Changed

• tracing: a drain lets a finished run go once it has stored it (aebc962)
• tracing: end-mode barriers write under the run's lock (6618df0)
• tracing: durability="end" stores a run only at its barriers (42c2db7)
• tracing: one write per run at a time, barriers included (09d54f1)
• tracing: a background task's end is stored after the turn (ed90f44)
• tracing: track background work per run, not per task (a285d3e)
• tracing: background work after the root run stays buffered (d5c81ad)
• messages: replay tool inputs in a fixed key order (2720885)
• voice: freeze the playback clock in the unheard-greeting test (858c7c1)
• tracing: link a run started inside a tool or step body to the call that started it (c3f6b2d)
• voice: an interrupted greeting keeps the time it was said (4c311d6)
• tracing: opt-in buffered persistence for mid-run trace saves (c975922)

Full Changelog: v2.7.40...v2.7.41