enhance Google OAuth handling by adding deep link redirect support; update comments for clarity

App.js

@@ -4,6 +4,7 @@ import { NavigationContainer } from '@react-navigation/native';
 import { createNativeStackNavigator } from '@react-navigation/native-stack';
 import { createBottomTabNavigator } from '@react-navigation/bottom-tabs';
 import { ActivityIndicator, View, Text, TouchableOpacity } from 'react-native';
+import * as WebBrowser from 'expo-web-browser';
 import { ThemeProvider, useTheme } from './src/services/ThemeContext';
 import DatabaseService from './src/services/DatabaseService';
 import LoginScreen from './src/screens/LoginScreen';
@@ -14,6 +15,9 @@ import SearchScreen from './src/screens/SearchScreen';
 import CollectionsScreen from './src/screens/AlbumsScreen';
 import SettingsScreen from './src/screens/SettingsScreen';
 
+// Required for OAuth deep link redirect to close the browser and return to the app
+WebBrowser.maybeCompleteAuthSession();
+
 const Stack = createNativeStackNavigator();
 const Tab = createBottomTabNavigator();