The short `~<channel>` address encodes in 25 modules where the old command line took 33, and that buys back the room the first attempts had to spend. At 64 points the code draws at 58 — the stones are 56 — with four device pixels to a module, still above the floor the renderer refuses below. So it keeps the wall's rhythm instead of being the one tile that shouts. Still decodes off a full-screen capture.