Function addDays

addDays(date: Date, days: number): Date
Adds a specified number of days to a date.
Parameters
- date: Date
  The input date.
- days: number
  The number of days to add.
Returns Date
A new Date with days added.
Example
```
addDays(new Date('2025-07-23'), 5); // → 2025-07-28
```
- Defined in date/utils.ts:53