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/services/warehouse.service.ts

@@ -35,6 +35,7 @@ import type {
   LoadPassedExportResult,
   BulkInspectPayload,
   BulkInspectResult,
+  ReadyToLoadRow,
   ReserveInventoryPayload,
   SaveWarehousePayload,
   SaveYardPayload,
@@ -130,6 +131,8 @@ export const warehouseService = {
     apiClient.post<LoadPassedExportResult>(URL_CONSTANTS.WAREHOUSE_INVENTORY.LOAD_PASSED_EXPORT, {}),
   bulkMarkInspected: (payload: BulkInspectPayload) =>
     apiClient.post<BulkInspectResult>(URL_CONSTANTS.WAREHOUSE_INVENTORY.BULK_MARK_INSPECTED, payload),
+  readyToLoadExport: () =>
+    apiClient.get<ReadyToLoadRow[]>(URL_CONSTANTS.WAREHOUSE_INVENTORY.READY_TO_LOAD_EXPORT),
   move: (id: string, payload: MoveInventoryPayload) =>
     apiClient.post<WarehouseInventoryItem>(URL_CONSTANTS.WAREHOUSE_INVENTORY.MOVE(id), payload),
   movements: (id: string) =>