Unify store-closed messaging when the market is closed or has no quote.

Treat missing quotes as closed across home and products, show only the admin closed_message as hint, and block trading with consistent notices.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/views/base/home/composables/useHomePage.ts

@@ -12,7 +12,7 @@ import {
 } from '@/utils/productAssets'
 import { useSettingsStore } from '@/store/settingsStore'
 import { getTradeBuyPrice, lastPrice, stopLastPricePolling } from '@/utils/price'
-import { getStoreClosedMessage, isStoreClosed } from '@/utils/storeHours'
+import { isStoreClosed } from '@/utils/storeHours'
 import { message, Modal } from 'ant-design-vue'
 import { useBanners } from './useBanners'
 import { usePriceChart, type ChartMetalType } from './usePriceChart'
@@ -74,7 +74,7 @@ export function useHomePage() {
   const closedMessage = computed(() => userStore.getValueByKey('closed_message'))
   const marketClosedText = computed(() => {
     if (!isStoreClosed()) return ''
-    // فقط پیام سفارشی ادمین رو نشون بده — پیام ساعت کاری در CurrentPrice نمایش داده میشه
+    // فقط پیام سفارشی ادمین — در CurrentPrice نمایش داده می‌شود
     const custom = typeof closedMessage.value === 'string' ? closedMessage.value.trim() : ''
     return custom || ''
   })