CronSchedule.dailyAt constructor
Builder: At specific time daily
Example: CronSchedule.dailyAt(hour: 9, minute: 30) → 9:30 AM daily
Implementation
factory CronSchedule.dailyAt({required int hour, int minute = 0}) {
if (hour < 0 || hour > 23) throw ArgumentError('Hour must be 0-23');
if (minute < 0 || minute > 59) throw ArgumentError('Minute must be 0-59');
return CronSchedule('$minute $hour * * *');
}