Mrtenz/FindETH — reverse-engineered prompt

Build me a local web app called FindETH that helps someone recover or identify a lost Ethereum wallet address. I want to enter a mnemonic phrase or connect a Ledger or Trezor, then have the app search through common Ethereum derivation paths and show any addresses it finds with Ether or token balances.

Please make safety the main focus. The mnemonic should never be sent anywhere, and the app should clearly tell the user to run it locally if they are using a seed phrase. It should work in the browser on localhost with HTTPS, even if that means a self signed certificate warning.

The interface should be simple and reassuring, with clear steps for choosing mnemonic, Ledger, or Trezor, starting the scan, seeing progress, and viewing matching addresses, balances, and paths. Include experimental Ledger Bluetooth support if it is realistic. Use TypeScript and a modern React style setup, and look up current wallet device docs online if you need to.