feat: 新增营养摄入分析卡片并优化相关页面

- 在统计页面中引入营养摄入分析卡片，展示用户的营养数据
- 更新探索页面，增加营养数据加载逻辑，确保用户体验一致性
- 移除不再使用的推荐文章逻辑，简化代码结构
- 更新路由常量，确保路径管理集中化
- 优化体重历史记录卡片，提升用户交互体验

app/(tabs)/statistics.tsx

@@ -1,18 +1,21 @@
 import { AnimatedNumber } from '@/components/AnimatedNumber';
 import { BMICard } from '@/components/BMICard';
 import { CircularRing } from '@/components/CircularRing';
+import { NutritionRadarCard } from '@/components/NutritionRadarCard';
 import { ProgressBar } from '@/components/ProgressBar';
 import { WeightHistoryCard } from '@/components/WeightHistoryCard';
 import { Colors } from '@/constants/Colors';
 import { getTabBarBottomPadding } from '@/constants/TabBar';
 import { useAppSelector } from '@/hooks/redux';
+import { useAuthGuard } from '@/hooks/useAuthGuard';
 import { useColorScheme } from '@/hooks/useColorScheme';
+import { calculateNutritionSummary, getDietRecords, NutritionSummary } from '@/services/dietRecords';
 import { getMonthDaysZh, getMonthTitleZh, getTodayIndexInMonth } from '@/utils/date';
 import { ensureHealthPermissions, fetchHealthDataForDate } from '@/utils/health';
 import { Ionicons } from '@expo/vector-icons';
 import { useBottomTabBarHeight } from '@react-navigation/bottom-tabs';
 import { useFocusEffect } from '@react-navigation/native';
-import { useRouter } from 'expo-router';
+import dayjs from 'dayjs';
 import React, { useEffect, useMemo, useRef, useState } from 'react';
 import {
   SafeAreaView,
@@ -25,12 +28,13 @@ import {
 import { useSafeAreaInsets } from 'react-native-safe-area-context';
 
 export default function ExploreScreen() {
-  const router = useRouter();
   const theme = (useColorScheme() ?? 'light') as 'light' | 'dark';
   const colorTokens = Colors[theme];
   const stepGoal = useAppSelector((s) => s.user.profile?.dailyStepsGoal) ?? 2000;
   const userProfile = useAppSelector((s) => s.user.profile);
 
+  const { pushIfAuthedElseLogin, isLoggedIn } = useAuthGuard();
+
   // 使用 dayjs：当月日期与默认选中“今天”
   const days = getMonthDaysZh();
   const [selectedIndex, setSelectedIndex] = useState(getTodayIndexInMonth());
@@ -67,12 +71,17 @@ export default function ExploreScreen() {
   const [isLoading, setIsLoading] = useState(false);
   // 用于触发动画重置的 token（当日期或数据变化时更新）
   const [animToken, setAnimToken] = useState(0);
-  const [trainingProgress, setTrainingProgress] = useState(0.8); // 暂定静态80%
+  const [trainingProgress, setTrainingProgress] = useState(0); // 暂定静态80%
+
+  // 营养数据状态
+  const [nutritionSummary, setNutritionSummary] = useState<NutritionSummary | null>(null);
+  const [isNutritionLoading, setIsNutritionLoading] = useState(false);
 
   // 记录最近一次请求的“日期键”，避免旧请求覆盖新结果
   const latestRequestKeyRef = useRef<string | null>(null);
 
-  const getDateKey = (d: Date) => `${d.getFullYear()}-${d.getMonth() + 1}-${d.getDate()}`;
+  const getDateKey = (d: Date) => `${dayjs(d).year()}-${dayjs(d).month() + 1}-${dayjs(d).date()}`;
+
 
   const loadHealthData = async (targetDate?: Date) => {
     try {
@@ -112,11 +121,44 @@ export default function ExploreScreen() {
     }
   };
 
+  // 加载营养数据
+  const loadNutritionData = async (targetDate?: Date) => {
+    try {
+      setIsNutritionLoading(true);
+
+      // 若未显式传入日期，按当前选中索引推导日期
+      const derivedDate = targetDate ?? days[selectedIndex]?.date?.toDate() ?? new Date();
+
+      console.log('加载营养数据...', derivedDate);
+      const data = await getDietRecords({
+        startDate: dayjs(derivedDate).startOf('day').toISOString(),
+        endDate: dayjs(derivedDate).endOf('day').toISOString(),
+      });
+
+      if (data.records.length > 0) {
+        const summary = calculateNutritionSummary(data.records);
+        setNutritionSummary(summary);
+      } else {
+        setNutritionSummary(null);
+      }
+      console.log('营养数据加载完成:', data);
+
+    } catch (error) {
+      console.error('营养数据加载失败:', error);
+      setNutritionSummary(null);
+    } finally {
+      setIsNutritionLoading(false);
+    }
+  };
+
   useFocusEffect(
     React.useCallback(() => {
       // 聚焦时按当前选中的日期加载，避免与用户手动选择的日期不一致
       loadHealthData();
-    }, [selectedIndex])
+      if (isLoggedIn) {
+        loadNutritionData();
+      }
+    }, [])
   );
 
   // 日期点击时，加载对应日期数据
@@ -126,6 +168,9 @@ export default function ExploreScreen() {
     const target = days[index]?.date?.toDate();
     if (target) {
       loadHealthData(target);
+      if (isLoggedIn) {
+        loadNutritionData(target);
+      }
     }
   };
 
@@ -138,10 +183,10 @@ export default function ExploreScreen() {
           contentContainerStyle={{ paddingBottom: bottomPadding }}
           showsVerticalScrollIndicator={false}
         >
-                  {/* 体重历史记录卡片 */}
-                  <Text style={styles.sectionTitle}>健康数据</Text>
+          {/* 体重历史记录卡片 */}
+          <Text style={styles.sectionTitle}>健康数据</Text>
           <WeightHistoryCard />
-          
+
           {/* 标题与日期选择 */}
           <Text style={styles.monthTitle}>{monthTitle}</Text>
           <ScrollView
@@ -169,6 +214,12 @@ export default function ExploreScreen() {
             })}
           </ScrollView>
 
+          {/* 营养摄入雷达图卡片 */}
+          <NutritionRadarCard
+            nutritionSummary={nutritionSummary}
+            isLoading={isNutritionLoading}
+          />
+
           {/* 指标行：左大卡（训练时间），右两小卡（消耗卡路里、步数） */}
           <View style={styles.metricsRow}>
             <View style={[styles.trainingCard, styles.metricsLeft]}>
@@ -230,7 +281,8 @@ export default function ExploreScreen() {
             height={userProfile?.height ? parseFloat(userProfile.height) : undefined}
           />
 
-  
+
+
         </ScrollView>
       </SafeAreaView>
     </View>