Add biometric authentication registration functionality

- Implement biometric registration methods in appBridge
- Add openBiometricRegistrationPopup and closeBiometricRegistrationPopup functions
- Integrate biometric registration UI in home page and auth register component
- Fix TypeScript errors in useAppBridge hook

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/types/bridge.ts

@@ -51,6 +51,10 @@ export enum BridgeMessageType {
   // 인증
   LOGIN = 'login',
   LOGOUT = 'logout',
+  REGISTER_BIOMETRIC = 'registerBiometric',
+
+  OPEN_BIOMETRIC_REGISTRATION_POPUP = 'openBiometricRegistrationPopup',
+  CLOSE_BIOMETRIC_REGISTRATION_POPUP = 'closeBiometricRegistrationPopup',
   
   // 언어 설정
   SET_LANGUAGE = 'setLanguage',