offici5l/MiTool — reverse-engineered prompt

Build me a Termux based Android tool for Xiaomi phones called MiTool. I want someone to be able to use one Android phone to help manage another Xiaomi device without needing a PC.

The main things it should do are unlock the bootloader and flash a Fastboot ROM. Make it feel like a simple command line app that guides the user step by step, checks what it needs, and gives clear warnings before doing anything risky. It should work from Termux, use storage access, and include an easy install script people can run with curl.

Please keep it focused and practical. Include a README with simple install instructions, mention that Termux and Termux API are needed, and add clear notes about supported features and safety. Use Python for the tool logic and shell only where it makes sense for installation. Look up current Termux or Android command details online if you need to.