Optional Oban entry point for forward response-partition creation, mirroring
mix ash_onetime.roll_partitions. Schedule it ahead of the retention horizon (e.g. daily or
weekly) so payloads never route to the _default partition; without it, bounded retention
silently degrades past the install window.
Runs on a dedicated :ash_onetime_partitions queue (separate from CleanupWorker's
:ash_onetime_cleanup) so forward partition creation — the retention-safety path — does
not compete with routine cleanup for queue slots under saturation. Configure the queue in
your Oban config (queues: [ash_onetime_partitions: N]) or jobs sit unscheduled.