Under the hood
Command-queue events move to a shared registry, and peer-message admission failures are now recorded first.
The internal dun() command-queue constructor now gets its commandsDiscarded/commandsConsumed event emitters from a shared Z6e() registry instead of module-level singletons. Peer-message admission failures are now also recorded through a peer_loop_guard telemetry call before falling back to the existing hop-chain/queue-full admission checks.