google-gemini/angular-language-learning-sample ? reverse-engineered prompt

Build me an Angular web app for language learning that uses the Gemini API to generate quiz questions in a few supported languages.

I want it to feel like a simple demo where a user can pick a language, get a question, answer it, and then keep going with follow up questions that get adjusted based on how they’re doing. Please make it use prompt instructions in a way that shows how the app can guide Gemini to create better quiz content over time.

Set it up so it runs with server side rendering, and make sure the API key can be read from an environment variable, with a simple fallback for local testing if needed. Keep the UI clean and easy to use, since this is meant to be a sample I can run locally and show quickly. If you need to check the latest Angular or Gemini docs while building it, go ahead and look them up online.