feat(warehouse): Batch 7 — Import Arrive Queue (arrived import trains, read-only)

- SchedulingReadFacade: importArriveQueue() + importTrainDetail() — read-only SELECTs only,
  direction derived from origin/destination station countries (route-based), so EXPORT/DOMESTIC
  trains are excluded. Per-train booking/container/cargo counts.
- GET /warehouse-inventory/import/arrive-queue + /import/trains/:scheduleId/items
- Import tab restructured into sub-tabs: Arrive Queue (implemented) / Unloaded Queue /
  Dispatch Queue (placeholders for next batch)
- ImportArriveQueueTab: train table (schedule id, train #, route, origin, destination, arrival,
  bookings/containers/cargoes, status) with Open (expandable assigned-items detail) + Auto Unload
  (reuses existing per-booking unload endpoint over the train's bookings)
- Batch7TestDataSeeder: 1 arrived IMPORT train (SEED-IMP-001) + 1 arrived EXPORT train
  (SEED-EXP-001, proves exclusion); idempotent
- Train schedule service logic untouched (facade is SELECT-only)

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

apps/edr-freight-api/src/modules/warehouses/warehouse-inventory.controller.ts

@@ -118,6 +118,18 @@ export class WarehouseInventoryController {
     return this.inventoryService.gateClearance(id, performedBy);
   }
 
+  @Get('import/arrive-queue')
+  @ApiOperation({ summary: 'Arrived IMPORT train schedules (route-derived), read-only from scheduling' })
+  importArriveQueue() {
+    return this.scheduling.importArriveQueue();
+  }
+
+  @Get('import/trains/:scheduleId/items')
+  @ApiOperation({ summary: 'Assigned bookings/items for an arrived import train (read-only)' })
+  importTrainDetail(@Param('scheduleId', ParseUUIDPipe) scheduleId: string) {
+    return this.scheduling.importTrainDetail(scheduleId);
+  }
+
   @Get('loadable-wagons')
   @ApiOperation({ summary: 'List wagons usable for loading (read-only from scheduling)' })
   loadableWagons() {