ced339bd18
- 17 net definitions (GND, +3.3V/+5V, BCK/LRCK/DIN/DOUT, audio signals) - Net assignments to 35+ pads across all components (PCM1808, PCM5102A, TL072, AMS1117) - 20 trace segments for I2S bus and audio signal routing - 4 GND copper pour zones (F.Cu + B.Cu) Uses string-based S-expression manipulation with proper parenthesis tracking.