paradox1905006/TG-media-Backup- ? reverse-engineered prompt

Build me an Android app in Kotlin that backs up my photos and videos to a private Telegram group, and keeps everything organized by folder using Telegram topics.

I want it to scan my device storage, find media in nested folders, and upload only what is new so it does not keep sending duplicates if I rename or move files. It should also be able to restore media later and recreate the same folder structure on my phone from the topic names.

Please make it privacy focused, with the bot token and chat ID saved securely on device, and use a clean dark interface with a dashboard, folder picker, and settings screen. It should run backups in the background reliably, show progress and status, and handle retries when the network is bad.

If you need to check the latest Android or Telegram docs while building it, feel free to look them up online.