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/hooks/useAppBridge.tsx

@@ -1,6 +1,6 @@
 import { useState, useEffect, useCallback } from 'react';
 import { appBridge } from '@/utils/appBridge';
-import { DeviceInfo, LocationInfo, ContactInfo, ShareContent } from '@/types';
+import { DeviceInfo, ShareContent } from '@/types';
 
 interface UseAppBridgeReturn {
   isNativeEnvironment: boolean;
@@ -37,6 +37,14 @@ interface UseAppBridgeReturn {
   */
   // 공유
   shareContent: (content: ShareContent) => Promise<void>;
+
+  // 간편 인증 등록
+  registerBiometric: () => Promise<void>;
+
+  // 간편 인증 등록 팝업 열기
+  openBiometricRegistrationPopup: () => Promise<boolean>;
+  // 간편 인증 등록 팝업 닫기
+  closeBiometricRegistrationPopup: () => Promise<void>;
 }
 
 export const useAppBridge = (): UseAppBridgeReturn => {
@@ -149,6 +157,28 @@ export const useAppBridge = (): UseAppBridgeReturn => {
     return appBridge.safeCall(() => appBridge.removeStorage(key));
   }, [isNativeEnvironment]);
 
+  const registerBiometric = useCallback(async (): Promise<void> => {
+    if (!isNativeEnvironment) {
+      throw new Error('Biometric auth is only available in native environment');
+    }
+    return appBridge.safeCall(() => appBridge.registerBiometric());
+  }, [isNativeEnvironment]);
+
+  const openBiometricRegistrationPopup = useCallback(async (): Promise<boolean> => {
+    if (!isNativeEnvironment) {
+      return false;
+    }
+    const result = await appBridge.safeCall(() => appBridge.openBiometricRegistrationPopup(), false);
+    return result || false;
+  }, [isNativeEnvironment]);
+
+  const closeBiometricRegistrationPopup = useCallback(async (): Promise<void> => {
+    if (!isNativeEnvironment) {
+      return;
+    }
+    return appBridge.safeCall(() => appBridge.closeBiometricRegistrationPopup());
+  }, [isNativeEnvironment]);
+
   /*
   const openCamera = useCallback(async (
     options?: { quality?: number; allowEdit?: boolean }
@@ -265,6 +295,9 @@ export const useAppBridge = (): UseAppBridgeReturn => {
     getLocation,
     getContacts,
     */
-    shareContent
+    shareContent,
+    registerBiometric,
+    openBiometricRegistrationPopup,
+    closeBiometricRegistrationPopup
   };
 };