v0.2.1 — fix queue throughput metric name

Fixed

• Queue throughput cards queried queue_metrics_queue_throughput_per_minute; the OTLP collector translates the {jobs}/min unit to a _per_min suffix (verified against live production data), so the Throughput card, the queues table's Jobs/min column and the queue-detail header matched nothing. Now they query queue_metrics_queue_throughput_per_min. All other derived metric names and labels verified correct against live data.

Full Changelog: v0.2.0...v0.2.1