mujflix-team/mujflix ? reverse-engineered prompt

Build me a Czech personal movie and TV tracker that feels like Netflix, but for keeping track of what I watch. I want a clean responsive web app that works on phone, tablet, and desktop, and can be installed like an app on the home screen.

People should be able to pick or create a profile with its own name, avatar, color, favorites, ratings, and watch progress, all without needing an account or email. The app should let me browse movies and series, search by Czech, English, or original title, filter by genre and year, and show me things like continue watching, recommendations, trending titles, new episodes, and similar shows. I also want detail pages with seasons, episodes, cast, trailers, and the option to mark episodes watched.

Add playback links with a way to try the next source if one fails, plus a section showing where something is legally available to watch. If you need current API details, look them up online. Also include offline support, saved data in the browser, and a simple way to back up or connect data between devices with a code or QR code.