openroller/CONTRIBUTING.md

Contributing

Bug reports and focused patches are welcome. For hardware-specific issues, include the platform, firmware or CFW version, song and difficulty, and steps that reproduce the problem.

Do not submit copyrighted game assets, executables, keys, firmware dumps or data extracted from a copy you are not authorized to inspect. Research notes should describe observable formats and behavior without embedding original assets. New code must be compatible with the repository's MIT license.

Keep reusable rendering/platform primitives in vectorail-core, format-only parsing in vectorail-gc, and game behavior in OpenRoller.