The rail becomes one unboxed near-black instrument (420->332px, card borders and fills removed, chrome labels, bone values); amber decoration retires from the rail while cursor/selection/ownership keep it; Seen resolves as institution — porcelain floor field, ivory wall faces, near-black cutaway cap seams; Unknown stays featureless black. Before/after/grayscale evidence committed beside the studies. Defense: implements wiki/interface/clinical-frame.md (composition + instrument-rail contracts; ACs 1-4, 6-8 evidenced, AC5 partial) and the visual-identity law's world-is-the-primary-interface clause; status note records the slice and the remaining opens.