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}>