Contributing
LUMEN is open to contributions. The canonical, always-current guide lives at the repository root - GitHub renders it in the pull-request and issue UI:
It covers development setup, the validation bar (cargo test / clippy
pedantic / fmt), the Definition of Done, commit and PR conventions, the ADR
process, and the full issue-label taxonomy.
Issues are classified along four axes (Type, priority:, area:, scope:); the canonical taxonomy with label meanings is in CONTRIBUTING.md.