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,
+  },
 });