angelhs02/horarios_web ? reverse-engineered prompt

Build me a simple web app for managing a class schedule.

I want a clean page where I can add my subjects, days, times, and teacher names, then see everything organized in a nice weekly timetable. It should be easy to read on desktop and mobile, with a polished, modern look.

If it makes sense, add a small helper that can suggest a better schedule or help me organize overlapping classes, but keep the main experience simple and fast. Use the existing app setup, connect anything that needs an API key from the env file, and make sure it runs smoothly locally. If you need to check current docs for anything, go ahead and look them up online.