sarita110/StackForge-MERN ? reverse-engineered prompt

Build me a lightweight learning platform where students can sign up, log in, browse courses, open lessons, and mark lessons as completed so their progress is saved. I also need an admin area where I can approve or block users, and create, edit, or delete courses and lessons.

Please make it feel clean and modern, with a simple dashboard for students and a separate control panel for admins. The app should keep everything secure with login sessions and role based access, so pending users cannot get into the main workspace until they are approved. I want the data stored in PostgreSQL, with the database running in Docker, and the whole thing split into a backend API and a frontend React app.

Use a polished UI, make sure the course progress updates correctly, and include basic tests for the main API flows. If you need to check current setup details or docs while building it, look them up online.