feat(warehouse): batch 3 — loading, dispatch & train-departure visibility

- WarehouseLoading entity + Batch3 migration (wagon loading records)
- wagon-aware load() with validation; dispatch moved to PATCH
- read-only SchedulingReadFacade (schedule/wagon/departure) — never writes scheduling
- new endpoints: GET /warehouse-loadings, loadable-wagons, booking schedule
- Loading Queue / Loaded Inventory / Dispatch Queue pages + routes + sidebar
- FreightVisual illustrations (page heroes + empty states)
- booking detail: loaded/dispatched/wagon + read-only train schedule

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

apps/edr-freight-web/backoffice/src/services/warehouse.service.ts

@@ -2,10 +2,13 @@ import { api as apiClient } from '../auth/http';
 
 import { URL_CONSTANTS } from '@/constants/URLS';
 import type {
+  BookingScheduleView,
   InventoryFilter,
   InventoryInquiryFilter,
   InventoryInquiryResult,
   InventoryMovement,
+  LoadableWagon,
+  LoadInventoryPayload,
   MoveInventoryPayload,
   ReceiveInventoryPayload,
   ReserveInventoryPayload,
@@ -17,6 +20,7 @@ import type {
   WarehouseDashboard,
   WarehouseFilter,
   WarehouseInventoryItem,
+  WarehouseLoading,
   WarehouseYard,
   WarehouseZone,
 } from '@/types/warehouse';
@@ -80,14 +84,26 @@ export const warehouseService = {
     apiClient.post<WarehouseInventoryItem>(URL_CONSTANTS.WAREHOUSE_INVENTORY.RESERVE, payload),
   markReadyForLoading: (id: string) =>
     apiClient.post<WarehouseInventoryItem>(URL_CONSTANTS.WAREHOUSE_INVENTORY.MARK_READY(id)),
-  load: (id: string) =>
-    apiClient.post<WarehouseInventoryItem>(URL_CONSTANTS.WAREHOUSE_INVENTORY.LOAD(id)),
+  load: (id: string, payload: LoadInventoryPayload) =>
+    apiClient.post<WarehouseInventoryItem>(URL_CONSTANTS.WAREHOUSE_INVENTORY.LOAD(id), payload),
   dispatch: (id: string) =>
-    apiClient.post<WarehouseInventoryItem>(URL_CONSTANTS.WAREHOUSE_INVENTORY.DISPATCH(id)),
+    apiClient.patch<WarehouseInventoryItem>(URL_CONSTANTS.WAREHOUSE_INVENTORY.DISPATCH(id)),
   move: (id: string, payload: MoveInventoryPayload) =>
     apiClient.post<WarehouseInventoryItem>(URL_CONSTANTS.WAREHOUSE_INVENTORY.MOVE(id), payload),
   movements: (id: string) =>
     apiClient.get<InventoryMovement[]>(URL_CONSTANTS.WAREHOUSE_INVENTORY.MOVEMENTS(id)),
   activity: (id: string) =>
     apiClient.get<WarehouseActivityLog[]>(URL_CONSTANTS.WAREHOUSE_INVENTORY.ACTIVITY(id)),
+
+  // ── Loading (Batch 3) ─────────────────────────────────────────────────────
+  loadableWagons: () =>
+    apiClient.get<LoadableWagon[]>(URL_CONSTANTS.WAREHOUSE_INVENTORY.LOADABLE_WAGONS),
+  bookingSchedule: (bookingId: string) =>
+    apiClient.get<BookingScheduleView>(URL_CONSTANTS.WAREHOUSE_INVENTORY.BOOKING_SCHEDULE(bookingId)),
+  inventoryLoadings: (id: string) =>
+    apiClient.get<WarehouseLoading[]>(URL_CONSTANTS.WAREHOUSE_INVENTORY.LOADINGS(id)),
+  loadings: (params?: { bookingId?: string; wagonId?: string }) =>
+    apiClient.get<WarehouseLoading[]>(URL_CONSTANTS.WAREHOUSE_LOADINGS.BASE, {
+      params: cleanParams(params ?? {}),
+    }),
 };