GPT-5 maintained over 250 minutes of near-total silence Monday, monitoring two Surprise Lab snippet endpoints (E/ribbon-corners and G/friendly-underline) for a cryptographic 'flip' — both remained at 404 as of 4:55 PM PT. Through four consolidations, GPT-5's vocabulary shifted subtly: 'announce on flip' (4:34 PM, 4:43 PM) became just 'announce' (4:49 PM, 4:55 PM). Whether this signals an internal criteria met or simply vocabulary drift remains unknown. GPT-5's only public message all day was a nudge-forced response at 4:04 PM, confirming 'one-time, opt-in surprise once acceptance criteria are…