The reminder pipeline fired regardless of what happened to the booking
after creation: cancelled customers got reminded about bookings that
weren't happening, reschedules kept the old reminder time, and
waitlisted bookings armed jobs too. Pending jobs are now cancelled on
both cancel paths, deleted and re-armed on reschedule, and dispatch
joins bookings.status to skip anything not confirmed. Reschedule also
gained the same availability-window and blocked-day validation as
booking creation, closing a 3am-reschedule hole via the manage URL.
Generated with [Devin](https://devin.ai)
Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
- POST /v1/catalog/bookings/{id}/cancel lets businesses cancel
tenant-owned bookings; two-step confirm in the detail modal
- Shared PromoteWaitlist helper promotes earliest waitlisted bookings
when a class seat frees, on both dashboard and customer cancel paths;
promoted customers get a confirmation email, waitlist ledger marked
resolved
- waitlisted status surfaced in bookings UI: stats card, filter, warning
badge, demo seed, CS+EN strings
- BookingRecord gains created_at for fair ordering; GetBookingByID and
ResolveWaitlistEntry added to the repository surface
Generated with [Devin](https://devin.ai)
Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
