Candidate Universal Shell amendment: Council ratification of Tier-1 / Tier-2 artifacts is mandatorily a minimum 2-round process. Round 1: each brain answers independently in parallel. Round 2: each brain is shown the other's Round-1 response and must defend, adopt with explicit M-Imperative-3 [ADOPTING_FROM] re-audit reason, or introduce a third position. Without the Round-2 cross-check, ratification is just 'yes from each brain' with no adversarial validation that they actually saw and considered the other's reasoning. Structurally identical to FORCED_RULE_03 (Round-2 cross-check on real disagreement) but applied universally to ratification — the ratification act is itself a moment where K3 adversarial reasoning must fire, not a rubber-stamp of Round-1 convergence. Refines amendment 83614b20 (Tier-2 ratification by council convergence) by specifying the procedure: convergence-as-ratification means convergence after Round 2, not Round 1. Surfaced by you mid-flight when orchestrator was about to fire a single-round ratification poll. Candidate for new Section 4.x in Universal Shell.