Hardware: connection table + KiCad netlist
docs/hardware-plan.md §11: authoritative connection table (refdes, all
nets by block — power, RM2 radio, USB/flash/SWD, CV DAC, 8 bipolar CV
channels, MIDI TRS, display/UI/keypad, spares).
hardware/netlist.net: machine-importable KiCad netlist (S-expr format)
derived from the table — components with footprints + all nets/pins.
Import: KiCad > File > Import Non-KiCad Netlist (or open as a netlist
to populate a board). Pins are logical (GPIO names, DAC/op-amp function
names); map physical QFN pins when placing footprints.