refactor(App, navigation): migrate to Expo Router and clean up navigation structure

- Updated App entry point to utilize Expo Router, simplifying the navigation setup.
- Removed legacy navigation components and services to streamline the codebase.
- Adjusted package.json to reflect the new entry point and updated dependencies for compatibility.
- Enhanced overall application structure by consolidating navigation logic and improving maintainability.

src/screens/auth/ForgotPasswordScreen.tsx

@@ -11,19 +11,15 @@ import {
   ActivityIndicator,
 } from 'react-native';
 import { SafeAreaView } from 'react-native-safe-area-context';
-import { useNavigation } from '@react-navigation/native';
-import { NativeStackNavigationProp } from '@react-navigation/native-stack';
+import { useRouter } from 'expo-router';
 import { MaterialCommunityIcons } from '@expo/vector-icons';
 import { LinearGradient } from 'expo-linear-gradient';
 import { colors, spacing, borderRadius, shadows, fontSizes } from '../../theme';
-import { RootStackParamList } from '../../navigation/types';
 import { authService, resolveAuthApiError } from '../../services/authService';
 import { showPrompt } from '../../services/promptService';
 
-type ForgotPasswordNavigationProp = NativeStackNavigationProp<RootStackParamList, 'Auth'>;
-
 export const ForgotPasswordScreen: React.FC = () => {
-  const navigation = useNavigation<ForgotPasswordNavigationProp>();
+  const router = useRouter();
   const [email, setEmail] = useState('');
   const [verificationCode, setVerificationCode] = useState('');
   const [newPassword, setNewPassword] = useState('');
@@ -95,7 +91,7 @@ export const ForgotPasswordScreen: React.FC = () => {
       });
       if (ok) {
         showPrompt({ title: '重置成功', message: '密码已重置，请重新登录', type: 'success' });
-        navigation.goBack();
+        router.back();
       }
     } catch (error: any) {
       showPrompt({ title: '重置失败', message: resolveAuthApiError(error, '请稍后重试'), type: 'error' });
@@ -192,7 +188,7 @@ export const ForgotPasswordScreen: React.FC = () => {
                 {loading ? <ActivityIndicator size="small" color="#fff" /> : <Text style={styles.submitButtonText}>重置密码</Text>}
               </TouchableOpacity>
 
-              <TouchableOpacity style={styles.backButton} onPress={() => navigation.goBack()}>
+              <TouchableOpacity style={styles.backButton} onPress={() => router.back()}>
                 <Text style={styles.backButtonText}>返回登录</Text>
               </TouchableOpacity>
             </View>