A Ritual Chamber film still, frontal from behind the evaluators: a near-empty institute chamber where a synthetic persona card stands upright behind one-way glass, slowly assembling into a forum-user silhouette made of chat bubbles, research notes, and judge stamps. Large empty walls carry the cream-and-dark stepped-cross institute tile; deep near-black shadow, hard chiaroscuro, clear analogue tube-amp warmth. One sepia grade; the single accent is a few phosphor-green vials along the judging rail. A hexagonal honeycomb lattice is the real floor structure; one small mis-struck Bureau seal. Numbered callouts: (1) Turing reward stamp, (2) persona seam, (3) imitation pulse. One detail gone quietly wrong: the silhouette casts two timestamps. Nobody is afraid. Output in exactly 1122 x 1402 px, 4:5 portrait ratio.