3r3N19/shadow — reverse-engineered prompt

Build me a very simple Python tool called Shadow that I can run in Termux on my phone. The setup should stay minimal, basically install Python 3, allow storage access in Termux, clone the project, open the folder, and run python3 bomb_enc.py.

I want the script to actually feel usable, not just be a placeholder. Since the project name and script suggest some kind of encoding or encryption utility, make it work as a small command line app with clear prompts, simple input and output, and sensible error handling so it does not crash on bad input. Keep it beginner friendly and lightweight.

Please also clean up the README so a normal person can follow it from start to finish without guessing anything. If anything is missing, fill in the gaps and make the main script run end to end in one go. You can check current Termux and Python usage online if you need to.