ROOMBRAKE: Every Object Stops the Next

ROOMBRAKE is an original true fine-pixel contact-braked unpacking floorplan puzzle. Every stable furniture body owns a fixed footprint plus one published north/south rail and one published east/west rail. Choose North, East, South or West. The complete object enters through that door, slides until its next physical step would touch a wall or settled footprint, then stops permanently. Every placement therefore becomes braking geometry for every later delivery.