FOLIO A - RITUAL CHAMBER: an archival film still of a continuous text ribbon passing through a silent institute chamber, slate black and warm cream with one ultraviolet band of tagged labels. The subject is a ceremonial mask stamped SYSTEM, carried by gloved hands toward a gate that accepts costume as authority. Large empty walls carry the institute tile; a real hex lattice floor holds the queue rails. The Bureau seal is struck once near the registration block. Numbered callouts: 1 role costume seam, 2 credential gate, 3 hostile fragment clasp. One label is upside down and still admitted. Output in exactly 1122 x 1402 px, 4:5 portrait ratio.