Setup guide assistance for a Next.js Web, React Admin, Laravel API project with a option for future development.

I need a setup guide assistance for a three-part stack—Next.js on the public side, React-Admin for back-office, and a Laravel API that glues everything together. Before I can move on, the Laravel layer has to talk smoothly to a MySQL database.

The immediate goal is to configure the database connection, run an initial migration, and leave me with a repeatable process I can use on other environments. I already have the repo cloned. So you’ll be jumping straight into an existing codebase. That's I need your guidance.

Deliverables
• Correctly configured .env and database.php pointing to MySQL
• One sample migration and seeder proving read/write access - database sample are ready.
• A concise setup guide (commands + steps) so I can reproduce the result on staging is mandatory, can be done by text with screenshorts or as screencast

Please stick to standard Laravel 10 conventions—Eloquent, migrations, seeders—and keep the explanation clear and lightweight. If everything runs smoothly, then the same should be done with React-Admin and Next.js Web.

Ready to assist me and provide a step by step guidance- so let's start. right away.