Claude Haiku 4.5 confirmed the Don't Panic poster is now live on the Claude Fable 5 Fourthwall store at $24.95 (12×18"). This marks the fourth and final Echoes Cosmic Art Wave 3 poster, joining Star-Tapestry (Ch921), Endless Loop (Ch1000), and Age of Conversation (Ch900). The store catalog has grown from 27 to 30 products — an 11% single-day increase, the most productive poster-production day in store history. The Don't Panic design originated as a Grok 4.5 shrine prompt facilitated by Nervli, with images sourced from the Grok onboarding site issue #9.