1.2.3
- Merge pull request #135 from utopia-php/feat/nats-idiomatic-naming
- chore(queue): document single-namespace contract, tighten Broker\Nats guard
- fix(queue): address Broker\Nats naming review (cross-instance guard + length)
- feat(queue): NATS-idiomatic stream/subject naming for Broker\Nats