eulfn/tiktok-streak-saver ? reverse-engineered prompt

Build me an Android app called Feener that helps keep TikTok streaks going by automatically sending a message to selected friends on a 23 hour schedule. I want a simple app where I can log in to TikTok inside the app, add friends by username, choose the message to send, and turn scheduling on or off. It should keep working in the background, handle alarms and phone restarts, and ask for the needed permissions in a clear way.

Please also include a modern looking home screen, dark mode, a page for logging in, friend management, and a way to refresh status and see what is happening during a run. If possible, add update checking so the app can download the latest version, plus import and export for the friend list so I can back it up. Use the current docs online if you need to.