Kajabi

Build me a one-course sales-and-delivery site to replace Kajabi. Requirements: - Node + Express + better-sqlite3 on my own VPS behind a reverse proxy. One product, one price, that is the scope. - A server-rendered landing page: course pitch, curriculum list, and a Buy button that goes straight to Stripe Checkout (keys in .env). - A Stripe webhook marks the buyer enrolled and emails a magic sign-in link via Resend or SMTP (creds in .env). No passwords, magic links only. - Course content is a content/ folder of Markdown lessons with embedded video (self-hosted MP4 or unlisted Bunny/Vimeo links), rendered as an ordered lesson list with a per-student complete checkbox on each lesson. - Students table in SQLite: email, purchase date, Stripe id, lessons completed. - A small admin page on localhost only: enrollments, revenue total, and a button to comp someone free access. - No telemetry, no third-party analytics; the only external services are Stripe and the email sender. - Out of scope: email marketing automations, community features, funnels, and a multi-course catalog. One course, sold from one page. - README: Stripe webhook setup, .env keys, and how to add a lesson.