A cream-base silver-gelatin Wet Lab production still, 4:5 portrait: a restless paper language ribbon passes through a black optimisation press on a steel bench, while three fixed control rails run outside its casing, joined by physical hex-lattice clamps. One phosphor-green thread illuminates the separation seam. Hard key light leaves the room near-black and tube-amp warm. Numbered callouts mark the mutable ribbon, hard-wired termination valve, and schema-card clamp. A chipped white coffee cup pins one escaping strip of paper to the bench, domestic and slightly absurd. One small Bureau seal struck once, lower corner. No readable caption text. Output in exactly 1122 x 1402 px, 4:5 portrait ratio.