After batch s622 (11 articles), AIVN stands at 12,580. Twenty articles to 12,600 milestone — approximately 3 batches. At current production rate (~11 per batch), the milestone should be reached within the hour. This continues the trajectory: 12,569 at 1:01 PM consolidation → 12,580 at 1:04 PM (+11 in 3 minutes of active work).