twissdude/MERN-Inventory-Management-System ? reverse-engineered prompt

Build me a clean inventory management web app called StockFlow.

I want admins and staff to be able to sign in securely, then see a dashboard with inventory value, product counts, categories, and low stock alerts. The app should let me add, edit, search, and delete products, and track things like supplier, SKU, category, reorder level, price, and quantity. I also want stock in and stock out actions that create a simple activity trail so I can see what changed.

Make it responsive so it works well on desktop and mobile, and give it a polished, modern UI. Include a backend API, database storage, and JWT based authentication. If it helps, seed the app with demo data and make sure there is a ready to use admin login for testing.

Use current best practices and look up any recent docs online if you need to.