feat: add QR code login and enhance chat experience

- Add QR code login flow with scanner and confirmation screens
- Implement swipe-to-reply in chat with SwipeableMessageBubble
- Replace FlatList with FlashList for chat performance optimization
- Add Schedule stack navigator with CourseDetail screen support
- Configure deep linking for QR code login (carrotbbs://qrcode/login/:sessionId)
- Update branding from 胡萝卜 to 萝卜社区
- Display dynamic app version in settings

src/screens/profile/SettingsScreen.tsx

@@ -15,6 +15,7 @@ import {
 import { SafeAreaView } from 'react-native-safe-area-context';
 import { useNavigation } from '@react-navigation/native';
 import { MaterialCommunityIcons } from '@expo/vector-icons';
+import Constants from 'expo-constants';
 import { colors, spacing, fontSizes, borderRadius } from '../../theme';
 import { useAuthStore } from '../../stores';
 import { Text, ResponsiveContainer } from '../../components/common';
@@ -30,6 +31,9 @@ interface SettingsItem {
   subtitle?: string;
 }
 
+// 获取应用版本号
+const APP_VERSION = Constants.expoConfig?.version || '1.0.0';
+
 // 设置分组配置
 const SETTINGS_GROUPS = [
   {
@@ -53,7 +57,7 @@ const SETTINGS_GROUPS = [
     title: '关于与帮助',
     icon: 'information-outline',
     items: [
-      { key: 'about', title: '关于我们', icon: 'information-outline', showArrow: true, subtitle: '版本 1.0.2' },
+      { key: 'about', title: '关于我们', icon: 'information-outline', showArrow: true, subtitle: `版本 ${APP_VERSION}` },
       { key: 'help', title: '帮助与反馈', icon: 'help-circle-outline', showArrow: true },
     ],
   },
@@ -183,7 +187,7 @@ export const SettingsScreen: React.FC = () => {
       {/* 底部版权信息 */}
       <View style={styles.footer}>
         <Text variant="caption" color={colors.text.hint}>
-          萝卜社区 v1.0.2
+          萝卜社区 v{APP_VERSION}
         </Text>
         <Text variant="caption" color={colors.text.hint} style={styles.copyright}>
           © 2024 Carrot BBS. All rights reserved.