holidays feature

The owner page

Where: Manage → Business → Holidays, at /owner/settings/holidays. It needs the same permission as Business Details.
Adding: you enter a name, a start date and an optional end date. Leaving the end empty gives a single day.
Upcoming and past: upcoming holidays are listed by date, with a trash icon to remove each one. Past ones sit in a collapsed “Past” list.
Existing bookings: if appointments are already booked on those dates, you see them and confirm with “Add Anyway”, the same pattern as Opening Hours. Nothing is cancelled automatically.

What it does to booking

Customer calendar: holiday dates are greyed out, for every staff member and every service.
Time slots: no slots are offered on those dates.
Direct bookings: staff and owner bookings and reschedules onto a holiday are refused, with a message naming the holiday. This is deliberate, but if you want owners to be able to override it, that’s a small change.

src/features/booking/error-messages.ts

@@ -12,6 +12,7 @@ const FRIENDLY_MESSAGES: Record<BookingValidationErrorCode, string> = {
   SERVICES_SPAN_MULTIPLE_BUSINESSES: "One or more selected services aren't available here.",
   STAFF_CANNOT_PERFORM_SERVICE: "This barber doesn't offer one of the selected services.",
   BUSINESS_CLOSED: "The business is closed at this time — please choose another slot.",
+  BUSINESS_HOLIDAY: "The business is closed on that date — please choose another day.",
   STAFF_NOT_WORKING: "This barber isn't working at that time — please choose another slot or barber.",
   STAFF_ON_BREAK: "This barber is on a break at that time — please choose another slot.",
   STAFF_ON_LEAVE: "This barber is away on that date — please choose another barber or date.",