tiendnm/zukulock ? reverse-engineered prompt

Build me a small Android app called ZukuLock that lets me lock or wake the screen with a single tap, like a virtual power button.

It should use Shizuku to send the power key command, so it does not need root and does not rely on Accessibility permissions. I want it to be simple and lightweight, with no extra screens popping up when I tap the app icon. If Shizuku is not set up yet, show a clear message telling me what to do.

Please make it work on Android 7.0 and up, and keep it friendly for Pixel phones and launcher gestures, so I can map double tap to open the app in Lawnchair or Nova Launcher. Use current Shizuku docs online if you need to confirm the best way to do it. Also include basic app icon and simple branding so it feels polished.