feat(billing): show account currency on billing page

app/javascript/dashboard/i18n/locale/en/settings.json

@@ -439,7 +439,14 @@
       "TITLE": "Current Plan",
       "PLAN_NOTE": "You are currently subscribed to the **{plan}** plan with **{quantity}** licenses",
       "SEAT_COUNT": "Number of seats",
-      "RENEWS_ON": "Renews on"
+      "RENEWS_ON": "Renews on",
+      "CURRENCY": "Currency"
+    },
+    "CURRENCY": {
+      "OPTIONS": {
+        "USD": "US Dollar (USD)",
+        "BRL": "Brazilian Real (BRL)"
+      }
     },
     "VIEW_PRICING": "View Pricing",
     "MANAGE_SUBSCRIPTION": {

app/javascript/dashboard/routes/dashboard/settings/billing/Index.vue

@@ -15,6 +15,8 @@ import PurchaseCreditsModal from './components/PurchaseCreditsModal.vue';
 import BaseSettingsHeader from '../components/BaseSettingsHeader.vue';
 import SettingsLayout from '../SettingsLayout.vue';
 import ButtonV4 from 'next/button/Button.vue';
+import { getCurrencyConfig } from 'dashboard/constants/billing';
+import { useI18n } from 'vue-i18n';
 
 const router = useRouter();
 const { currentAccount, isOnChatwootCloud } = useAccount();
@@ -29,6 +31,7 @@ const {
 
 const uiFlags = useMapGetter('accounts/getUIFlags');
 const store = useStore();
+const { t } = useI18n();
 
 const BILLING_REFRESH_ATTEMPTED = 'billing_refresh_attempted';
 
@@ -61,6 +64,13 @@ const subscribedQuantity = computed(() => {
   return customAttributes.value.subscribed_quantity;
 });
 
+const billingCurrency = computed(() => {
+  if (!customAttributes.value.billing_currency) return '';
+  return t(
+    getCurrencyConfig(customAttributes.value.billing_currency).i18nLabelKey
+  );
+});
+
 const subscriptionRenewsOn = computed(() => {
   if (!customAttributes.value.subscription_ends_on) return '';
   const endDate = new Date(customAttributes.value.subscription_ends_on);
@@ -188,6 +198,11 @@ onMounted(handleBillingPageLogic);
               :label="$t('BILLING_SETTINGS.CURRENT_PLAN.RENEWS_ON')"
               :value="subscriptionRenewsOn"
             />
+            <DetailItem
+              v-if="billingCurrency"
+              :label="$t('BILLING_SETTINGS.CURRENT_PLAN.CURRENCY')"
+              :value="billingCurrency"
+            />
           </div>
         </BillingCard>
         <BillingCard