CI/CD pipeline for automated builds and releases

[wocsor]

Set up a CI/CD pipeline that builds firmware on push to the release branch and publishes binaries under GitHub Releases. This will let users download precompiled binaries without needing a development environment. Also we need a releases branch from which to run CI/CD, as main should be for active development.

Acceptance Criteria

• CI runs automatically on pushes to release
• Successful builds produce firmware binaries
• Binaries are uploaded to GitHub Releases

[wocsor]

main blocker at the moment: firmware needs to be in a state ready for an initial release. once the release branch has been made, CI/CD can start.