feat(i18n): 实现应用国际化支持，添加中英文翻译

- 为所有UI组件添加国际化支持，替换硬编码文本
- 新增useI18n钩子函数统一管理翻译
- 完善中英文翻译资源，覆盖统计、用药、通知设置等模块
- 优化Tab布局使用翻译键值替代静态文本
- 更新药品管理、个人资料编辑等页面的多语言支持

components/statistic/SleepCard.tsx

@@ -7,6 +7,7 @@ import dayjs from 'dayjs';
 import { Image } from 'expo-image';
 import { router } from 'expo-router';
 import React, { useEffect, useMemo, useRef, useState } from 'react';
+import { useTranslation } from 'react-i18next';
 import { StyleSheet, Text, TouchableOpacity, View } from 'react-native';
 
 
@@ -19,6 +20,7 @@ const SleepCard: React.FC<SleepCardProps> = ({
   selectedDate,
   style,
 }) => {
+  const { t } = useTranslation();
   const dispatch = useAppDispatch();
   const challenges = useAppSelector(selectChallengeList);
   const [sleepDuration, setSleepDuration] = useState<number | null>(null);
@@ -39,7 +41,7 @@ const SleepCard: React.FC<SleepCardProps> = ({
         const data = await fetchCompleteSleepData(selectedDate);
         setSleepDuration(data?.totalSleepTime || null);
       } catch (error) {
-        console.error('SleepCard: 获取睡眠数据失败:', error);
+        console.error('SleepCard: Failed to get sleep data:', error);
         setSleepDuration(null);
       } finally {
         setLoading(false);
@@ -75,7 +77,7 @@ const SleepCard: React.FC<SleepCardProps> = ({
       try {
         await dispatch(reportChallengeProgress({ id: sleepChallenge.id, value: sleepDuration })).unwrap();
       } catch (error) {
-        logger.warn('SleepCard: 挑战进度上报失败', { error, challengeId: sleepChallenge.id });
+        logger.warn('SleepCard: Challenge progress report failed', { error, challengeId: sleepChallenge.id });
       }
 
       lastReportedRef.current = { date: dateKey, value: sleepDuration };
@@ -91,10 +93,10 @@ const SleepCard: React.FC<SleepCardProps> = ({
           source={require('@/assets/images/icons/icon-sleep.png')}
           style={styles.titleIcon}
         />
-        <Text style={styles.cardTitle}>睡眠</Text>
+        <Text style={styles.cardTitle}>{t('statistics.components.sleep.title')}</Text>
       </View>
       <Text style={styles.sleepValue}>
-        {loading ? '加载中...' : (sleepDuration != null ? formatSleepTime(sleepDuration) : '--')}
+        {loading ? t('statistics.components.sleep.loading') : (sleepDuration != null ? formatSleepTime(sleepDuration) : '--')}
       </Text>
     </View>
   );