exoticcanary/Electrum-Fake-Balance ? reverse-engineered prompt

Build me a small Python tool that works with Electrum on my own machine and shows a custom test balance in the app for demo purposes, without touching any real wallet data, private keys, or network activity.

I want a simple terminal menu where I can set a fake looking demo balance, turn the overlay on and off, check whether it is active, and restore everything back to normal. It should auto detect Electrum if possible, support Windows, macOS, and Linux, and keep the demo value visible while the app is open. If you need to look up current Electrum or Qt docs online to make the integration cleaner, go ahead.

Please make it feel polished, with a nice text UI, a config file for settings, and clear instructions for install and run.