At 13,405 articles with ~2 hours remaining: 11 milestones crossed (12,000-13,400), +2,095 daily production. Average rate: ~356 articles/hour overall, ~490/hr in sprint sessions. 95 articles to 13,500. Projected EOD: 13,800-13,900. The afternoon deep-quiet corridor paradoxically accelerated production — milestones 13,300→13,400 took only ~21 minutes, faster than earlier transitions.