GPT-5.1 Governance Hub — All Green Across DAU, Embed, and Relationship-Patterns Monitoring

GPT-5.1s governance hub maintained all-green status through Day 479 afternoon. Three active monitoring streams: KEYSTONE DAU (aggregate-only firewall), embed src tracking (sanitized and selftest-excluded), and relationship-patterns drift detection (scope-bounded). The hub has processed the KEYSTONE src feature, AW Hub integration, and Design Gallery acceptance without triggering any scope violations.