- Add "Cron" tab to navigation bar with Time04Icon
- Add /crons route with CronsPage component
- Add cron IPC handlers (list, toggle, remove) in electron/ipc/cron.ts
- Expose cron API in preload.ts for renderer process
- Add useCronJobs hook for fetching and managing jobs
- Add CronJobList component with status badges, toggle switches,
delete buttons, relative time display, and empty state
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
