feat(warehouses): allow deleting a warehouse

Soft-delete route guarded by warehouses:delete, refused with 409 while
yards remain — zones and inventory hang off a yard, so cascading would
orphan stock. Backoffice list gets a delete action in both views,
omitted when the user lacks the permission.

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

@@ -82,6 +82,14 @@ export function useUpdateWarehouse() {
   });
 }
 
+export function useDeleteWarehouse() {
+  const qc = useQueryClient();
+  return useMutation({
+    mutationFn: (id: string) => warehouseService.remove(id),
+    onSuccess: () => qc.invalidateQueries({ queryKey: warehouseKeys.all }),
+  });
+}
+
 // ── Yards ────────────────────────────────────────────────────────────────
 
 export function useWarehouseYards(warehouseId?: string) {