feat: add food camera and recognition features

- Implemented FoodCameraScreen for capturing food images with meal type selection.
- Created FoodRecognitionScreen for processing and recognizing food images.
- Added Redux slice for managing food recognition state and results.
- Integrated image upload functionality to cloud storage.
- Enhanced UI components for better user experience during food recognition.
- Updated FloatingFoodOverlay to navigate to the new camera screen.
- Added food recognition service for API interaction.
- Improved styling and layout for various components.

components/FloatingFoodOverlay.tsx

@@ -27,13 +27,13 @@ export function FloatingFoodOverlay({ visible, onClose, mealType = 'dinner' }: F
 
   const handlePhotoRecognition = () => {
     onClose();
-    router.push(`/food-camera?mealType=${mealType}`);
+    router.push(`/food/camera?mealType=${mealType}`);
   };
 
   const menuItems = [
     {
       id: 'scan',
-      title: '扫描',
+      title: 'AI拍照识别',
       icon: '📷',
       backgroundColor: '#4FC3F7',
       onPress: handlePhotoRecognition,
@@ -66,7 +66,7 @@ export function FloatingFoodOverlay({ visible, onClose, mealType = 'dinner' }: F
         <View style={styles.container}>
           <BlurView intensity={80} tint="light" style={styles.blurContainer}>
             <View style={styles.header}>
-              <Text style={styles.title}>日常记录</Text>
+              <Text style={styles.title}>记录方式</Text>
             </View>
 
             <View style={styles.menuGrid}>

components/NutritionRadarCard.tsx

@@ -120,7 +120,7 @@ export function NutritionRadarCard({
         <View style={styles.cardRightContainer}>
           <Text style={styles.cardSubtitle}>更新: {dayjs(nutritionSummary?.updatedAt).format('MM-DD HH:mm')}</Text>
           <TouchableOpacity style={styles.addButton} onPress={handleAddFood}>
-            <Ionicons name="add" size={12} color="#514b4bff" />
+            <Ionicons name="add" size={16} color="#514b4bff" />
           </TouchableOpacity>
         </View>
       </View>
@@ -362,10 +362,10 @@ const styles = StyleSheet.create({
     fontSize: 24,
   },
   addButton: {
-    width: 16,
-    height: 16,
-    borderRadius: 8,
-    backgroundColor: '#e5e8ecff',
+    width: 22,
+    height: 22,
+    borderRadius: 12,
+    backgroundColor: '#c1c1eeff',
     marginLeft: 8,
     alignItems: 'center',
     justifyContent: 'center',