Refactor components and enhance background task management

- Updated font sizes and weights in BasalMetabolismCard, MoodCard, HealthDataCard, and NutritionRadarCard for improved readability.
- Removed loading state from MoodCard to simplify the component.
- Adjusted styles in WeightHistoryCard for better layout and spacing.
- Integrated expo-background-fetch for improved background task handling.
- Updated Info.plist to include background fetch capability.
- Enhanced background task registration and execution logic in backgroundTaskManager.
- Added debug function to manually trigger background task execution for testing purposes.

components/DateSelector.tsx

@@ -182,7 +182,7 @@ export const DateSelector: React.FC<DateSelectorProps> = ({
 
 const styles = StyleSheet.create({
   container: {
-    paddingVertical: 8,
+
   },
   monthTitle: {
     fontSize: 18,