L-shape opens toward bottom-left; the two long outer edges carry the jack rows (CV top, MIDI right, ~52 mm each), USB-C on the short left edge beside the battery. Top arm = all CV analog + switching converters (noise kept far from radio); right arm = digital + MIDI + RM2 at the bottom-right corner for best antenna keepout. Target 2000 mAh cell -> ~70x58 mm bounding box, 50x35 mm notch. Renumbered build order.