feat: SW-2028 Fixed review comments

apps/scandic-web/stores/my-stay/myStayTotalPrice.ts

@@ -1,9 +1,11 @@
 import { create } from "zustand"
 
+import { CurrencyEnum } from "@/types/enums/currency"
+
 interface RoomPrice {
   id: string
   totalPrice: number
-  currencyCode: string
+  currencyCode: CurrencyEnum
   isMainBooking?: boolean
   roomPoints: number
 }
@@ -11,7 +13,7 @@ interface RoomPrice {
 interface MyStayTotalPriceState {
   rooms: RoomPrice[]
   totalPrice: number | null
-  currencyCode: string
+  currencyCode: CurrencyEnum
   totalPoints: number
   actions: {
     // Add a single room price
@@ -26,7 +28,7 @@ export const useMyStayTotalPriceStore = create<MyStayTotalPriceState>(
     totalPoints: 0,
     totalCheques: 0,
     totalVouchers: 0,
-    currencyCode: "",
+    currencyCode: CurrencyEnum.Unknown,
     actions: {
       addRoomPrice: (room) => {
         set((state) => {
@@ -44,7 +46,7 @@ export const useMyStayTotalPriceStore = create<MyStayTotalPriceState>(
 
           // Get currency from main booking or first room
           const mainRoom = newRooms.find((r) => r.isMainBooking) || newRooms[0]
-          const currencyCode = mainRoom?.currencyCode || ""
+          const currencyCode = mainRoom?.currencyCode ?? CurrencyEnum.Unknown
 
           // Calculate total (only same currency for now)
           const total = newRooms.reduce((sum, r) => {