Wake sleeping threads for queued agent mail - #34852
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## Why An idle thread with an outstanding durable sleep must resume when agent work arrives, even when that message would normally remain queued without triggering a turn. ## What changed - Treat any pending mailbox message as wake-up work while a durable sleep is attached to the thread. - Keep requiring `trigger_turn` for idle threads that are not durably asleep. - Cover waking a sleeping root thread from queue-only agent mail and persisting the message in thread history. GitOrigin-RevId: e361ac1b104436d4d63aebfe5e2422691a1cc139
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Wake sleeping threads for queued agent mail
Why
An idle thread with an outstanding durable sleep must resume when agent work
arrives, even when that message would normally remain queued without triggering a
turn.
What changed
attached to the thread.
trigger_turnfor idle threads that are not durably asleep.the message in thread history.