알림 목록 정렬 기능 추가

frontend/src/utils/tradeNotificationListLayout.ts

@@ -7,6 +7,9 @@ import {
 
 export type TradeNotificationListLayout = 'list' | 'grid';
 
+/** 알림 목록 정렬 */
+export type TradeNotificationListSort = 'market' | 'newest' | 'oldest';
+
 export function loadTradeNotificationListLayout(): TradeNotificationListLayout {
   const v = getUiPreferences().tradeNotifications?.listLayout;
   return v === 'grid' ? 'grid' : 'list';
@@ -25,3 +28,13 @@ export function loadTradeNotificationGridPreset(): TradeNotificationGridPresetId
 export function saveTradeNotificationGridPreset(preset: TradeNotificationGridPresetId): void {
   patchUiPreferences({ tradeNotifications: { gridPreset: preset } });
 }
+
+export function loadTradeNotificationListSort(): TradeNotificationListSort {
+  const v = getUiPreferences().tradeNotifications?.listSort;
+  if (v === 'market' || v === 'oldest') return v;
+  return 'newest';
+}
+
+export function saveTradeNotificationListSort(sort: TradeNotificationListSort): void {
+  patchUiPreferences({ tradeNotifications: { listSort: sort } });
+}