Add ApplyScheduledDefaultHours which checks default_hours_scheduled_changes at midnight, bulk-updates working_hours with staged values, and inserts an admin_notification. Register as the 'apply-default-hours' job in the scheduler (daily at 00:05).
Add centralized jobs scheduler and logutil package with ANSI colors and duration formatting. Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
popertots
