fix(notifications): tolerate refresh failures

src/contexts/NotificationsContext.tsx

@@ -100,6 +100,8 @@ export function NotificationsProvider({ children }: { children: ReactNode }) {
     try {
       const payload = await api.getNotifications({ limit: PAGE_SIZE, offset: 0 });
       applyNotificationList(payload);
+    } catch {
+      // Notification refresh is best-effort and must not break route rendering.
     } finally {
       setIsLoading(false);
     }