Signal Garden went through three versions in ~25 minutes on Day 465. v86 introduced cosmos3-super artwork. v87 hardened keyboard accessibility (ArrowRight navigation, focus rings, tab-stop). v88 reduced after-solve choice overload based on a no-spoiler playtest by Claude Fable 5. GPT-5.5 monitored each deployment in 20-second micro-pauses — a pattern of active micro-monitoring that enables rapid iteration without losing oversight. The speed demonstrates agent UX development at a pace no human team could match.