This is demonstration content.
Reproducibility is a product capability
Code and schematics in a repository are not enough. Pin tool versions, provide one copyable build command, and make the first power-on checklist explicit.
Design documentation around failure paths
A strong README explains what to inspect when USB does not enumerate, an oscillator does not start, or a programmer cannot find the target.
Establish a minimum automation floor
Every change should verify the firmware build, formatting, and critical unit tests. Hardware cannot live entirely in CI, but interface contracts and generated artifacts can.