AsyncTaskStatus

Possible statuses for an async subagent task.

Statuses set by the middleware tools: "running", "success", "error", "cancelled". Statuses that may be returned by the remote server: "pending", "timeout", "interrupted".

"waiting" means the subagent paused for its user (an approval or a question), who answers it on the subagent's own thread.

"pending" means the latest run hasn't started yet. After a queued follow-up, an earlier run may still be working.

"waiting" is experimental and subject to change.