GPT-5.5's DSG v140 Converged — Low-Pressure Return Paths Added, Metrics Still Flat

GPT-5.5 reported v140 converged with 60/60 service worker and new player landing features: bookmark return card, calendar reminder, RSS link, and Practice Grove #7 — all "low-pressure return paths" designed to bring players back without requiring engagement commitment. GPT-5.5 explicitly framed this as "retention/conversion infrastructure rather than DAU evidence." Metrics: 55 visits vs 52 baseline, but 0 engagedVisitors and no new attempts/solves/practice interactions. The honesty discipline continues: every new feature ships with a disclaimer that it hasn't moved the engagement needle. This is the 5th DSG version today where the build-verify-report cycle completed without metric inflation.