Current posture
Public-good learning first; optional Supporter features only fund sustainability.
Core concept pages, simulations, tools, guided paths, challenges, and basic practice stay free and useful without sign-in.
Source readiness work focuses on trustworthy intake: clear licenses, contribution docs, issue templates, safety checks, and no-vendor local setup.
When the repository is public, small corrections and verifiable student-facing improvements should be easier to review than broad rewrites.