Docs-only reconciliation of the Stable Assistant Turn Anchors / Live-to-Final RFCs + CONTRACTS.md + Phase 0 inventory from proposed/scaffold to accepted/implemented framing. No runtime/CI change; one comment-header fix in static/assistant_turn_anchors.js. Remaining hardening tracked under #3400. Co-authored-by: nesquena-hermes <agent@nesquena-hermes> Co-authored-by: franksong2702 <franksong2702@users.noreply.github.com>