- Vite + React app with dark Bitcoin-orange theme
- HD Wallet: generate, display seed/xpub/addresses, save with encryption
- Single addresses: P2PKH, P2WPKH, P2TR, P2PK, P2SH (multisig)
- Decrypt: load encrypted JSON wallet and reveal private data
- Bitcoin SVG icon in public/icons/
- Vite proxy /api → localhost:8000
