camhyx/bilibilias ? reverse-engineered prompt

Build me a simple experimental app for learning that can take a Bilibili video link,解析 it, and let me view the video info, play it on the device, and save it for offline viewing on my own phone. I want it to feel modern and easy to use, with a clean home screen, a place to paste or share a link, a results page, and basic download or cache management. Please add a first launch warning that this is an experimental project and not for public distribution, and make the app clearly handle user responsibility and content use. Use the existing Kotlin project structure and keep it working as a cross platform app if that’s already set up. If you need current library or API details, look them up online and keep the implementation practical and lightweight.