Biometric Mini App

This server hosts the linked-phone approval and mobile face flow UI.

• /connect#networkId=testnet06&chainId=0
• /sign#transactions=...&accounts=...
• /phone-auth.html?challengeId=...&token=...&apiBase=http://localhost:3000
• /face-mobile.html?sessionId=...&token=...&apiBase=http://localhost:3000