troisiemetype/teensymoog ? reverse-engineered prompt

Build me this TeensyMoog synth project from the README, a homemade Minimoog style instrument that runs sound on a Teensy 4.0 and uses two Arduino Mega boards to read the keys, knobs, and switches and send changes over MIDI style messages.

I want the code and project setup to let me compile the Teensy audio part, the two controller boards, and the shared MIDI communication between them. The synth should support the main sound features described in the README, like three oscillators, noise, mixer, feedback, filter, two envelopes, LFO, glide, octave transpose, modulation wheel, and the hidden function settings stored in memory. If anything in the audio design or library setup is unclear, look up the current Teensy audio and MIDI docs online and wire it up sensibly.

Also make sure the project is organized so the panel files and Teensy audio setup are usable, and add clear notes on how to build and upload each board.