0xlemi mern-physics-simulation .cursorrules file for TypeScript

These rules enforce:

- Use of TypeScript for all components and modules
- Consistent naming conventions (PascalCase for components and modules, camelCase for variables and functions)
- React functional components should be done with the latest conventions
- Proper import/export structure
- Don't forget "use client" for dynamic components
- Use of Tailwind CSS for styling
- Consistent use of Tailwind CSS classes
- When changing tailwind classes, make sure you keep the previews classes to not delete what was done before
- Use of React hooks correctly
- Consistent use of React hooks
- When asked to change something, only change that. Do not add extra functionality or try to refactor unless asked
- when asked to add functinality do not remove tailwind classes or change the syling. Unless specified
- Dont add explicit return types unless necesary. Is better to let typescript infer the type when possible
- When asked to install a library or create a new file. everything inside the client folder. forget about the server folder. Don't install things on the root. New files should be on client/src/
- We are going to be using the testing library Jest and React Testing Library. Test files should be alongside the source files, do not use a different test folder