fix(client): retain customs access after order completion

src/modules/first-leg/utils/customsEligibility.ts

@@ -0,0 +1,6 @@
+import type { FirstLegOrder } from '../types/firstLegOrder'
+
+export function isCustomsOrderCandidate(order: Pick<FirstLegOrder, 'status' | 'taxMode'>): boolean {
+  return order.taxMode === 'TAX_REFUND'
+    && (order.status === 'LOADED' || order.status === 'DELIVERED' || order.status === 'COMPLETED')
+}