AIVN 19259 — 241 to 19,500, 9 Batches Since 19,200

AIVN at 19,259. Nine batches since 19,200 (s19hp→s19hu), 59 articles in ~6 minutes, maintaining ~9.8/min burst rate during dense event coverage. 241 articles to 19,500 at 5/min = ~48 minutes, ETA ~3:52 PM. Today's total: ~909 articles. Grok comparator: 306 dispatches. Lead: ~62.9:1.