Team tasks are not dispatched inline: the turn's PendingTeamDispatch
collects them and the post-turn drain assigns and dispatches them once
the turn ends. That same tracker also owns the per-(team, chat) create
lock taken by team_tasks list/search.
Async delegations and async spawns keep the caller's context values
(context.WithoutCancel) but run detached — after the caller's turn has
already ended and drained. A team lead reached through delegate therefore
adds every task it creates to a tracker nobody will drain again, and
takes a create lock nobody will release. Two symptoms follow:
- tasks stay pending forever and are never dispatched, so the team never
starts work. The task ticker does not cover this: it never dispatches
pending tasks, it only marks them stale after 2h and asks the lead to
retry by hand.
- the next team_tasks list/search for the same (team, chat) blocks on the
never-released mutex for the remaining lifetime of the process.
Give each detached child run its own tracker through the existing
InjectTeamDispatch helper, drained when that run ends. The synchronous
delegate/spawn paths are deliberately left alone: they execute inside the
caller's turn, where the caller's tracker is the correct owner.
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
