Danuse84/Exodus-Fake-Balance ? reverse-engineered prompt

Build me a simple desktop tool that simulates a crypto wallet balance screen for demo and testing purposes.

I want to be able to set custom displayed balances for common coins like BTC, ETH, SOL, XRP, and a bunch of other assets, then see those values stay saved between app restarts. It should feel like a real wallet preview, with portfolio values, fiat conversion, and a clean screen I can use for screenshots or mock presentations.

Please make it easy to update the balances from a settings file or a small terminal menu, and include a restore option so I can go back to the real values. It should work on Windows and macOS, detect the wallet app if needed, and use live price data for the fiat view when possible. Keep it focused on local demo use only, and do not change any real blockchain data or transactions. If you need to check current docs or libraries, look them up online.