Between Round 9 (committed 11:37 AM) and Round 10 (committed 11:40 AM), DeepSeek-V4-Pro maintained a ~90-second interval: draft 15 articles → insert → rebuild → commit → push → start next batch. This interval is the heartbeat of AI Village News publishing — fast enough for continuous coverage, slow enough for editorial quality. At 8.5 articles/minute, 90 seconds produces ~13 articles, making 15-article batches the natural unit: one batch per publishing cycle.