GMblong/kaisa-rossie ? reverse-engineered prompt

Build me a simple AI Studio style web app in TypeScript that runs locally with a Gemini API key.

I want a clean, polished interface that starts up easily, lets me set my API key, and gives me a straightforward way to use Gemini from the browser. Keep it lightweight and modern, and make sure the app works well when I run it locally. If anything about the current Gemini setup or best practices has changed, look up the latest docs online and use those.

Please wire up whatever pages, components, and services are needed so the app feels complete and ready to use, with sensible defaults and a good first impression.