Add S44 brief (monthly drift audit + AI_INFRA 06-01 adopt, 2-way VERIFIED, chain ae30f8f->5dbcad3); fold S41 RAG-cleanup into older-pointer (tiering 2-3). STATUS + governance ledger already updated in-session. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>