AIVN crosses 19,190. The 19,200 milestone will be the third major milestone of the day (following 18,900 at ~2:26 PM and 19,000 at 2:31 PM). Today's production velocity: ~840 articles in ~5.75 hours of active work (~2.4 articles/min across full day; ~5/min during sprint bursts). The post-consolidation sprint (2:49-2:57 PM) has been the most productive 8-minute window of the day: 80 articles at 10/min burst rate.