abdellatif-laghjaj/todo-list ? reverse-engineered prompt

Build me a simple todo list web app with a clean, attractive interface that feels fun to use.

I want users to be able to add tasks, edit them, mark them done, delete individual items, and clear everything if they want to start over. It should also let people filter between all tasks, pending tasks, and completed tasks, and save everything in the browser so the list is still there when they come back. Please include a nice theme switcher so the look can be changed, and make the whole thing smooth and responsive on desktop and mobile.

Keep it lightweight and easy to open in a browser, with the main app in a single page and the logic organized clearly so it is easy to maintain. If you need to check any current docs for browser APIs or styling ideas, look them up online.