I need a lightweight Android TV app that plays a full-screen slideshow of the photos stored on any plugged-in USB drive at 1080p. The app should automatically scan the drive for common image formats, let me select what to play, then loop through them, and let me set how long each picture stays visible. When a new image appears, it must use a smooth slide-in / slide-out transition—no fades, no zooms. Navigation will happen entirely with the TV remote: arrow keys open a simple settings overlay and OK confirms changes. Touch or voice control could be added later, but remote support is the main requirement for this build. Key functions to include: • Adjustable interval timer (user-selectable seconds) • Brightness slider that dims or brightens the screen without leaving the app • Continuous, flicker-free slideshow running at 60 fps • Leanback-ready UI built in Kotlin or Java with AndroidX support • Signed APK plus full source so I can sideload or update it later Keep the interface minimal and performance-friendly; the whole app should install quickly and run smoothly on standard Android TV hardware. Let me know your estimated timeline and any similar projects you have shipped—especially USB media viewers or Leanback apps.