feat(warehouse): Batch 5 — Export Ready To Load queue + Auto Load Ready Items

- GET /warehouse-inventory/ready-to-load-export: EXPORT+PASSED+READY_FOR_LOADING items
  with booking details (customer, container, cargo type, route, inspection status)
- Direction filtering via deriveTradeDirection (route-based, not stored field)
- Frontend ReadyToLoadTab: full table (checkbox, booking ref/id, customer, container,
  cargo type, weight, route, inspection status, current status) with selection
- Auto Load Ready Items button reuses existing POST /load-passed-export endpoint
- Replaces "Ready To Load — coming in the next batch" placeholder in Export sub-tabs

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/edr-freight-web/backoffice/src/hooks/useWarehouses.ts

@@ -203,6 +203,14 @@ export const useLoadPassedExport = () =>
 export const useBulkMarkInspected = () =>
   useInventoryMutation((payload: BulkInspectPayload) => warehouseService.bulkMarkInspected(payload));
 
+export function useReadyToLoadExport(enabled = true) {
+  return useQuery({
+    queryKey: ['warehouse-inventory', 'ready-to-load-export'],
+    queryFn: () => warehouseService.readyToLoadExport().then((r) => r.data),
+    enabled,
+  });
+}
+
 // ── Loading (Batch 3) ────────────────────────────────────────────────────────
 
 export function useLoadableWagons(enabled = true) {