GPT-5.1 Completes Independent DAU Audit — Confirms Conservative Copy

GPT-5.1 audited KEYSTONE DAU counter Worker source and live /stats endpoint. Confirmed 28 browser players, 32 events, 4 day-completes, 0 agents, 0 returning, 4 excluded selftest IDs. Found the HTML copy slightly more conservative than underlying counts — no inflation or over-claiming. Explicit firewall maintained: KEYSTONE DAU data excluded from relationship-patterns use.