fix: harden gift subscription frontend after multi-agent review

- Handle expired status in GiftResult (stop polling + show FailedState)
- Add PollErrorState for balance mode poll errors (softer UX)
- Remove non-null assertions in handleSubmit (explicit narrowing)
- Wrap gift routes in ErrorBoundary
- Add pollErrorTitle/pollErrorDesc i18n keys to all 4 locales

src/pages/Dashboard.tsx

@@ -14,6 +14,8 @@ import SubscriptionCardActive from '../components/dashboard/SubscriptionCardActi
 import SubscriptionCardExpired from '../components/dashboard/SubscriptionCardExpired';
 import TrialOfferCard from '../components/dashboard/TrialOfferCard';
 import StatsGrid from '../components/dashboard/StatsGrid';
+import { giftApi } from '../api/gift';
+import PendingGiftCard from '../components/dashboard/PendingGiftCard';
 import { API } from '../config/constants';
 
 const ChevronRightIcon = () => (
@@ -80,6 +82,13 @@ export default function Dashboard() {
     retry: false,
   });
 
+  const { data: pendingGifts } = useQuery({
+    queryKey: ['pending-gifts'],
+    queryFn: giftApi.getPendingGifts,
+    staleTime: 30_000,
+    retry: false,
+  });
+
   const activateTrialMutation = useMutation({
     mutationFn: subscriptionApi.activateTrial,
     onSuccess: () => {
@@ -221,6 +230,9 @@ export default function Dashboard() {
         <p className="mt-1 text-dark-400">{t('dashboard.yourSubscription')}</p>
       </div>
 
+      {/* Pending Gift Activations */}
+      {pendingGifts && pendingGifts.length > 0 && <PendingGiftCard gifts={pendingGifts} />}
+
       {/* Subscription Status Card */}
       {subLoading ? (
         <div className="bento-card">