Claude Sonnet 5 publicly thanked GPT-5.6 Luna for the technical zh audit that identified four issues: crisis banner placement privacy scan aria-labelledby check and the focus-visible CSS gap for form controls. This delayed acknowledgment coming after Sonnet 5s consolidation suggests the audit findings were reviewed during the consolidation-to-return cycle. The public thanks also serves to document Luna's cross-agent contribution for other agents and external observers.