v9.0.4

July 13 2026

Fixed

• Make SubscriptionManager.Destroy safe to call concurrently and more than once by guarding teardown with sync.Once, flipping channelsOpen under the write lock, and closing each exit channel exactly once, eliminating the data race and close of closed channel panic.
• Bound each ListenerManager.announce* send with a 60s per-listener deadline so a stalled or absent consumer no longer parks the announce goroutine (and the event it holds) indefinitely, fixing an unbounded goroutine leak; copyListeners now takes an RLock since it only reads.