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/auth/RegisterScreen.tsx

@@ -268,8 +268,8 @@ export const RegisterScreen: React.FC = () => {
       </View>
       
       {/* 品牌名称 - 优化大屏排版 */}
-      <Text style={[styles.title, isSplitLayout && styles.splitTitle]}>创建账号</Text>
-      <Text style={[styles.subtitle, isSplitLayout && styles.splitSubtitle]}>加入胡萝卜，开始你的旅程</Text>
+      <Text style={[styles.title, isSplitLayout && styles.splitTitle]}>加入萝卜社区</Text>
+      <Text style={[styles.subtitle, isSplitLayout && styles.splitSubtitle]}>加入萝卜社区，发现有趣的内容</Text>
       
       {/* 装饰元素 - 大屏模式改为水平排列 + 大幅放大 */}
       <View style={[styles.leftPanelDecorBottom, isSplitLayout && styles.splitLeftPanelDecorBottom]}>
@@ -720,8 +720,8 @@ export const RegisterScreen: React.FC = () => {
                   color="#FFF"
                 />
               </View>
-              <Text style={[styles.title, { fontSize: titleSize }]}>创建账号</Text>
-              <Text style={styles.subtitle}>加入胡萝卜，开始你的旅程</Text>
+              <Text style={[styles.title, { fontSize: titleSize }]}>加入萝卜社区</Text>
+              <Text style={styles.subtitle}>加入萝卜社区，发现有趣的内容</Text>
             </Animated.View>
 
             {/* 表单 */}