4.0.0 io.github.pnoker iot-dc3 2026.5.22 ${project.artifactId} dc3-mq 2026.5.22 pom IoT DC3 pluggable message broker layer: the broker-neutral port, one certified reactive adapter per broker (rabbitmq default, kafka, pulsar, mqtt 5) and the contract suite that gates adapter compliance. Deployments pick exactly one adapter via dc3.mq.type — see docs/mq-brokers.md and docs/design/mq-abstraction.md. dc3-mq-core dc3-mq-rabbitmq dc3-mq-kafka dc3-mq-pulsar dc3-mq-mqtt dc3-mq-tck