full-stack Learning Management System designed for online education at scale. Instructors can create, manage, and publish video courses with rich metadata. Students can explore the catalog, enroll via Stripe checkout, stream lectures with resume-from-position playback, visualize engagement through per-lecture heatmaps, and participate in threaded Q&A discussions — all backed by a secure, queue-driven architecture with AI-powered RAG (Retrieval-Augmented Generation) chat.