The P0 sitting approved T-1/T-2/T-3 as written and pre-dated the T-3a/T-3b refinement; ADR-012 and DECISIONS.md asserted 'owner-ratified' for the split pending an explicit owner act. Owner's response via Anna: 'can be considered signed'. This commit documents that act in both records; no rule text changed - the docs now rest on a real ratification instead of a documented assumption.