DP-2: transform 90 -> normal with mode 3440x1440@239.999 pinned, moved (0,0) -> (1581,-600). HDMI-A-1: transform 270 -> 90 (portrait kept, top bezel now on the left). eDP-1 re-pinned (2400,840) -> (5021,-240) to sit rightmost. All three positions stay pinned so niri's auto-layout cannot reflow them.