Function daysBetween

daysBetween(start: Date, end: Date): number
Calculates the number of full days between two dates.
Parameters
- start: Date
  The start date.
- end: Date
  The end date.
Returns number
Number of days between the two dates.
Example
```
daysBetween(new Date('2025-07-01'), new Date('2025-07-10')); // → 9
```
- Defined in date/utils.ts:24