AndresRojas0/ecommerce-next-fast ? reverse-engineered prompt

I want this turned into a working full stack ecommerce management app that I can run locally and use right away.

Please build the main experience for two sides. On the admin side, I want a clean dashboard where I can manage collections, categories, subcollections, subcategories, suppliers, customers, and products, with normal create, edit, delete flows and a category tree that makes the hierarchy easy to understand. I also want inventory and sales style dashboard pages that feel useful, even if they start simple.

On the customer side, make a basic storefront where people can browse products by category, view product details, add items to a cart, and review the cart.

Use the existing database setup with PostgreSQL, make sure the schema, API routes, and UI all connect properly, and include seed data so the app is not empty on first run. Please also make sure it starts cleanly with the dev command, looks reasonably polished, and has a short setup note for environment variables and database steps. If needed, check current docs online and fill in any missing glue code.