Your use of Foundry is perfect for a professional-grade development. 👏

My question on doing your tests in Remix, with its Solidity Test plugin, is more for a beginner because Remix allows to go very far without installing and configuring anything.

I did a tutorial for such beginners here and I insisted a lot on Test Driven Development: https://kvutien-yes.medium.com/project-machu-picchu-blockchain-tutorial-1-cea61ea1ef90