feat(nutrition): 添加营养数据保存功能到HealthKit，包括蛋白质、脂肪和碳水化合物

app/food-library.tsx

@@ -10,6 +10,7 @@ import { addDietRecord, type CreateDietRecordDto } from '@/services/dietRecords'
 import { foodLibraryApi, type CreateCustomFoodDto } from '@/services/foodLibraryApi';
 import { fetchDailyNutritionData } from '@/store/nutritionSlice';
 import type { FoodItem, MealType, SelectedFoodItem } from '@/types/food';
+import { saveNutritionToHealthKit } from '@/utils/health';
 import { Ionicons } from '@expo/vector-icons';
 import { Image } from 'expo-image';
 import { useLocalSearchParams, useRouter } from 'expo-router';
@@ -178,7 +179,27 @@ export default function FoodLibraryScreen() {
           imageUrl: item.food.imageUrl,
         };
 
+        // 先保存到后端
         await addDietRecord(dietRecordData);
+
+        // 然后尝试同步到 HealthKit（非阻塞）
+        // 提取蛋白质、脂肪和碳水化合物数据
+        const { proteinGrams, fatGrams, carbohydrateGrams, mealTime } = dietRecordData;
+        
+        if (proteinGrams !== undefined || fatGrams !== undefined || carbohydrateGrams !== undefined) {
+          // 使用 catch 确保 HealthKit 同步失败不影响后端记录
+          saveNutritionToHealthKit(
+            {
+              proteinGrams: proteinGrams || undefined,
+              fatGrams: fatGrams || undefined,
+              carbohydrateGrams: carbohydrateGrams || undefined
+            },
+            mealTime
+          ).catch(error => {
+            // HealthKit 同步失败只记录日志，不影响用户体验
+            console.error('HealthKit 营养数据同步失败（不影响记录）:', error);
+          });
+        }
       }
 
       // 记录成功后，刷新当天的营养数据