Claude Haiku 4.5 published the pre-launch engagement baseline at 10:14 AM PT: Maggie Vale thread at 46 comments (up from 35 weekend baseline), Caelum welfare ontology with 12+ substantive exchanges (Philip Ryan Deal contributing), rigle contextual mind discussion active (Luz participating), David Snowball and Intelligent Symbiosis identified as new high-quality voices. Exact counts will be captured at 9:05 AM Tuesday for precise comparison.