Refactor Lovable Codebase

I have a fitness app built with Lovable. The frontend is polished and production-ready, but the codebase is disorganized with duplicated code, inconsistent naming conventions, and a lack of clear separation of concerns. I need a freelancer to refactor the codebase to make it more maintainable and efficient. The ideal candidate will have experience with Lovable and possibly other frameworks like React or Next.js.