统一前端时间按酒店时区显示

client/src/config/reservationConfig.ts

@@ -1,14 +1,25 @@
 const configuredReservationHotelId = import.meta.env.VITE_RESERVATION_HOTEL_ID?.trim()
 
 export const reservationHotelId = configuredReservationHotelId || null
+export const reservationTimeZone = 'Asia/Bangkok'
 
 let reservationHotelIdProvider: (() => string | null | undefined) | null = null
+let reservationTimeZoneProvider: (() => string | null | undefined) | null = null
 
 export function setReservationHotelIdProvider(provider: (() => string | null | undefined) | null): void {
   reservationHotelIdProvider = provider
 }
 
+export function setReservationTimeZoneProvider(provider: (() => string | null | undefined) | null): void {
+  reservationTimeZoneProvider = provider
+}
+
 export function getReservationHotelId(): string | null {
   const providedHotelId = reservationHotelIdProvider?.()?.trim()
   return providedHotelId || reservationHotelId
 }
+
+export function getReservationTimeZone(): string {
+  const providedTimeZone = reservationTimeZoneProvider?.()?.trim()
+  return providedTimeZone || reservationTimeZone
+}