h4ck3r0/Termux-os ? reverse-engineered prompt

Build me a simple Termux setup tool that makes the terminal look and feel much nicer with almost no effort.

I want an interactive script that can install and switch between Zsh, Fish, and Bash themes, apply a few nice color presets like Dracula, Nord, Monokai, Solarized Dark, and a default neon style, and let me add a custom username banner when Termux opens. It should also have an optional password lock for the terminal startup, with a few failed attempts before it closes, and it should store the password safely instead of plain text.

Make it easy for someone to run once and follow a menu, then restart Termux and see the changes right away. If you need to check current setup details or shell config behavior online, go ahead and look them up. Keep it clean, friendly, and beginner focused, with sensible defaults and an easy way to remove or reset things later.