leg-aware capacity and wagon sharing

packages/types/src/freight/index.ts

@@ -1108,6 +1108,10 @@ export interface ExportTrainOptionWagonType {
  */
 export interface ExportTrainOption {
   scheduleId: string;
+  /** Schedule's train number (falls back to the built train's number). */
+  trainNumber: string | null;
+  /** Built train's name/code, when the schedule runs a Train Builder train. */
+  trainName: string | null;
   departure: string;
   bookingClosesAt: string | null;
   isOpen: boolean;