feat: SW-2028 Fixed review comments

apps/scandic-web/server/routers/booking/output.ts

@@ -9,6 +9,8 @@ import {
   nullableStringValidator,
 } from "@/utils/zod/stringValidator"
 
+import { CurrencyEnum } from "@/types/enums/currency"
+
 const guestSchema = z.object({
   email: nullableStringEmailValidator,
   firstName: nullableStringValidator,
@@ -97,7 +99,7 @@ export const packageSchema = z
       unitPrice: z.number(),
       totalPrice: z.number().nullish(),
       totalUnit: z.number().int().nullish(),
-      currency: z.string().default(""),
+      currency: z.nativeEnum(CurrencyEnum).default(CurrencyEnum.Unknown),
       points: nullableIntValidator,
     }),
     comment: z.string().nullish(),
@@ -218,7 +220,7 @@ export const bookingConfirmationSchema = z
         computedReservationStatus: z.string().nullable().default(""),
         confirmationNumber: nullableStringValidator,
         createDateTime: z.date({ coerce: true }),
-        currencyCode: z.string(),
+        currencyCode: z.nativeEnum(CurrencyEnum),
         guest: guestSchema,
         linkedReservations: nullableArrayObjectValidator(
           linkedReservationSchema