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-api/src/modules/warehouses/warehouse-inventory.controller.ts

@@ -78,6 +78,12 @@ export class WarehouseInventoryController {
     return this.inventoryService.loadPassedExport(performedBy);
   }
 
+  @Get('ready-to-load-export')
+  @ApiOperation({ summary: 'EXPORT inventory that passed inspection and is READY_FOR_LOADING' })
+  readyToLoadExport() {
+    return this.inventoryService.readyToLoadExport();
+  }
+
   @Post('bulk-mark-inspected')
   @ApiOperation({ summary: 'Bulk mark received inventory inspection PASSED (EXPORT → READY_FOR_LOADING)' })
   bulkMarkInspected(@Body() dto: BulkInspectDto) {