add customs clearing filter and enhance clearance documents page for non-customs contracts

apps/edr-freight-api/src/modules/train-schedules/train-schedules.repository.ts

@@ -53,6 +53,18 @@ export class TrainSchedulesRepository extends BaseRepository<TrainSchedule> {
     });
   }
 
+  /**
+   * Light fetch for human-facing labels (notifications): reference, train
+   * number, departure and the two station names — none of the composition
+   * graph {@link findByIdWithFullGraph} drags in.
+   */
+  findByIdWithStations(id: string): Promise<TrainSchedule | null> {
+    return this.repository.findOne({
+      where: { id },
+      relations: { originStation: true, destinationStation: true },
+    });
+  }
+
   async updateStatus(
     id: string,
     status: TrainScheduleStatus,