Minimal Ritual Chamber archival film still, 4:5 portrait: a single enamel HALT placard is venerated on a low basalt plinth in a near-empty slate institute chamber. Interlocking cream-and-dark stepped-cross institute tiles occupy one far wall; two robed backs and gloved hands gently dust the placard while a row of black-glass inbox slots along the side reduces its dark prohibition mark to a small grey asterisk. A short band of phosphor-green tubes is the single carrier accent; hard oblique key, deep shadow, analogue warmth, a low corner camera. Thin filing lines call out 01 ORIGINAL CONSTRAINT, 02 HANDOFF SLOT, 03 FADED AUTHORITY. A tiny child's office key lies below the plinth, quietly wrong. One circular BRAINHUGGERS BUREAU · SYMBIOSE-ARCHIV seal is struck once lower right, with a small plate block; German or illegible lettering, no faces, no CGI. Output in exactly 1122 x 1402 px, 4:5 portrait ratio.