Reconciles Queue CRs into Kafka topics + Redis shard-map/queue-meta state:
creates shard-0 on first reconcile, splits a shard's hash range into two
children once its split threshold is crossed, drains and closes a parent
shard once its consumer group has fully caught up and its retention
window has elapsed, and tears down every shard's topic + Redis state on
deletion. Includes the manager entrypoint (cmd/queue-operator) and RBAC.
QueueSpec/QueueStatus model the shard-based (Kinesis-style hash-range
splitting) queue lifecycle object, with the controller-gen-generated
deepcopy and CRD YAML.
riotpiaole