feat(medical): 添加医疗免责声明和参考文献功能

- 在用药模块首次添加时显示医疗免责声明弹窗
- 新增断食参考文献页面，展示权威医学机构来源
- 在个人中心添加WHO医学来源入口
- 使用本地存储记录用户已读免责声明状态
- 支持Liquid Glass毛玻璃效果和降级方案
- 新增中英文国际化翻译支持

app/(tabs)/fasting.tsx

@@ -48,6 +48,7 @@ import {
 import { Ionicons } from '@expo/vector-icons';
 import { useFocusEffect } from '@react-navigation/native';
 import dayjs from 'dayjs';
+import { GlassView, isLiquidGlassAvailable } from 'expo-glass-effect';
 import { useRouter } from 'expo-router';
 import React, { useCallback, useEffect, useMemo, useState } from 'react';
 import { ScrollView, StyleSheet, Text, TouchableOpacity, View } from 'react-native';
@@ -592,6 +593,38 @@ export default function FastingTabScreen() {
           activePlanId={activePlan?.id ?? currentPlan?.id}
           onSelectPlan={handleSelectPlan}
         />
+
+        {/* 参考文献入口 */}
+        <View style={styles.referencesSection}>
+          <TouchableOpacity
+            style={styles.referencesButton}
+            onPress={() => router.push(ROUTES.FASTING_REFERENCES)}
+            activeOpacity={0.8}
+          >
+            {isLiquidGlassAvailable() ? (
+              <GlassView
+                style={styles.referencesGlass}
+                glassEffectStyle="clear"
+                tintColor="rgba(46, 49, 66, 0.05)"
+                isInteractive={true}
+              >
+                <View style={styles.referencesContent}>
+                  <Ionicons name="library-outline" size={20} color="#2E3142" />
+                  <Text style={styles.referencesText}>参考文献与医学来源</Text>
+                  <Ionicons name="chevron-forward" size={16} color="#6F7D87" />
+                </View>
+              </GlassView>
+            ) : (
+              <View style={[styles.referencesGlass, styles.referencesFallback]}>
+                <View style={styles.referencesContent}>
+                  <Ionicons name="library-outline" size={20} color="#2E3142" />
+                  <Text style={styles.referencesText}>参考文献与医学来源</Text>
+                  <Ionicons name="chevron-forward" size={16} color="#6F7D87" />
+                </View>
+              </View>
+            )}
+          </TouchableOpacity>
+        </View>
       </ScrollView>
 
       <FastingStartPickerModal
@@ -766,4 +799,34 @@ const styles = StyleSheet.create({
     fontWeight: '600',
     color: '#2E3142',
   },
+  referencesSection: {
+    marginTop: 24,
+    marginBottom: 20,
+  },
+  referencesButton: {
+    borderRadius: 20,
+    overflow: 'hidden',
+  },
+  referencesGlass: {
+    borderRadius: 20,
+    paddingVertical: 16,
+    paddingHorizontal: 20,
+  },
+  referencesFallback: {
+    backgroundColor: 'rgba(246, 248, 250, 0.8)',
+    borderWidth: 1,
+    borderColor: 'rgba(46, 49, 66, 0.1)',
+  },
+  referencesContent: {
+    flexDirection: 'row',
+    alignItems: 'center',
+  },
+  referencesText: {
+    flex: 1,
+    fontSize: 16,
+    fontWeight: '600',
+    color: '#2E3142',
+    marginLeft: 12,
+    marginRight: 8,
+  },
 });

app/(tabs)/medications.tsx

@@ -3,12 +3,14 @@ import { DateSelector } from '@/components/DateSelector';
 import { MedicationCard } from '@/components/medication/MedicationCard';
 import { ThemedText } from '@/components/ThemedText';
 import { IconSymbol } from '@/components/ui/IconSymbol';
+import { MedicalDisclaimerSheet } from '@/components/ui/MedicalDisclaimerSheet';
 import { Colors } from '@/constants/Colors';
 import { useAppDispatch, useAppSelector } from '@/hooks/redux';
 import { useColorScheme } from '@/hooks/useColorScheme';
 import { medicationNotificationService } from '@/services/medicationNotifications';
 import { fetchMedicationRecords, fetchMedications, selectMedicationDisplayItemsByDate } from '@/store/medicationsSlice';
 import { DEFAULT_MEMBER_NAME } from '@/store/userSlice';
+import { getItemSync, setItemSync } from '@/utils/kvStore';
 import { convertMedicationDataToWidget, refreshWidget, syncMedicationDataToWidget } from '@/utils/widgetDataSync';
 import { useFocusEffect } from '@react-navigation/native';
 import dayjs, { Dayjs } from 'dayjs';
@@ -29,6 +31,9 @@ import { useSafeAreaInsets } from 'react-native-safe-area-context';
 
 dayjs.locale('zh-cn');
 
+// 本地存储键名：医疗免责声明已读状态
+const MEDICAL_DISCLAIMER_READ_KEY = 'medical_disclaimer_read';
+
 type MedicationFilter = 'all' | 'taken' | 'missed';
 
 type ThemeColors = (typeof Colors)[keyof typeof Colors];
@@ -46,15 +51,37 @@ export default function MedicationsScreen() {
   const celebrationRef = useRef<CelebrationAnimationRef>(null);
   const celebrationTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null);
   const [isCelebrationVisible, setIsCelebrationVisible] = useState(false);
+  const [disclaimerVisible, setDisclaimerVisible] = useState(false);
 
   // 从 Redux 获取数据
   const selectedKey = selectedDate.format('YYYY-MM-DD');
   const medicationsForDay = useAppSelector((state) => selectMedicationDisplayItemsByDate(selectedKey)(state));
 
   const handleOpenAddMedication = useCallback(() => {
+    // 检查是否已经读过免责声明
+    const hasRead = getItemSync(MEDICAL_DISCLAIMER_READ_KEY);
+    
+    if (hasRead === 'true') {
+      // 已读过，直接跳转
+      router.push('/medications/add-medication');
+    } else {
+      // 未读过，显示医疗免责声明弹窗
+      setDisclaimerVisible(true);
+    }
+  }, []);
+
+  const handleDisclaimerConfirm = useCallback(() => {
+    // 用户同意免责声明后，记录已读状态，关闭弹窗并跳转到添加页面
+    setItemSync(MEDICAL_DISCLAIMER_READ_KEY, 'true');
+    setDisclaimerVisible(false);
     router.push('/medications/add-medication');
   }, []);
 
+  const handleDisclaimerClose = useCallback(() => {
+    // 用户不接受免责声明，只关闭弹窗，不跳转，不记录已读状态
+    setDisclaimerVisible(false);
+  }, []);
+
   const handleOpenMedicationManagement = useCallback(() => {
     router.push('/medications/manage-medications');
   }, []);
@@ -328,6 +355,13 @@ export default function MedicationsScreen() {
           </View>
         )}
       </ScrollView>
+
+      {/* 医疗免责声明弹窗 */}
+      <MedicalDisclaimerSheet
+        visible={disclaimerVisible}
+        onClose={handleDisclaimerClose}
+        onConfirm={handleDisclaimerConfirm}
+      />
     </View>
   );
 }

app/(tabs)/personal.tsx

@@ -435,6 +435,16 @@ export default function PersonalScreen() {
         },
       ],
     },
+    {
+      title: t('personal.sections.medicalSources'),
+      items: [
+        {
+          icon: 'medkit-outline' as React.ComponentProps<typeof Ionicons>['name'],
+          title: t('personal.menu.whoSource'),
+          onPress: () => Linking.openURL('https://www.who.int'),
+        },
+      ],
+    },
     {
       title: t('personal.language.title'),
       items: [