thisless/StoryBible-NarrativeEngine ? reverse-engineered prompt

Build me a simple AI Studio web app called StoryBible Narrative Engine.

I want a clean page where I can type in a story idea, a few character notes, and any world building details, then have the app use Gemini to generate a stronger story bible and narrative suggestions for me. It should feel easy to use, with a main input area, a generate button, and a results area that shows the output in a readable way.

Make it work locally with my Gemini API key, and keep the UI polished but simple. If it helps, include loading and error states, and make the generated text easy to copy and reuse. Use the existing TypeScript setup and build it so I can run it right away in the browser. If you need current API details, look them up online.