sujalchauhan342-ship-it/Mern-portfolio-project- ? reverse-engineered prompt

Build me a MERN portfolio project repo with three separate starter apps, one for an ecommerce store, one for an expense tracker, and one for a realtime chat app.

Each project should be easy to run locally and have its own frontend and backend, with a clean basic setup I can expand later. I want the ecommerce one to let users browse products, view details, and handle a simple cart and checkout style flow. The expense tracker should let someone add, edit, and remove expenses and see their spending at a glance. The chat app should support realtime messaging between users in a simple room or conversation style layout.

Keep the design clean and polished enough for a portfolio. Add sensible README files for each project so I know how to start them and what each one does. If you need to check current docs online for anything, go ahead. Make it feel like a good starter codebase I can learn from and improve myself.