Internal: added docs/specs/COURSES.md, the version 1 specification for a Courses area: courses of modules and lessons written in the Notes editor; private video and audio with captions and resume; self-paced and cohort courses with release rules, live sessions and a waiting list; quizzes, assignments with instructor review, completion and certificates with a public verification page; lesson discussion and announcements; a school where students sign in by emailed link or code; enrolment for free, by purchase through Store, by payment plan or through a Supporters tier; reports, emails and JSON import. Video delivery, plans and limits, fees, payment plans, Supporters access and five other decisions are open for the owner. Nothing is built yet.
Added the Courses specification
Internal: docs/specs/COURSES.md specifies a Courses area with lessons, private video, cohorts, quizzes, assignments, certificates and selling through Store.