changes

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

@@ -21,6 +21,10 @@ export class TrainSchedulesRepository extends BaseRepository<TrainSchedule> {
   findByIdWithFullGraph(id: string, manager?: EntityManager): Promise<TrainSchedule | null> {
     return this.repo(manager).findOne({
       where: { id },
+      // One SELECT per relation instead of a single monster join — the nested
+      // wagon×allocation×booking×container branches multiply rows catastrophically
+      // when joined (measured ~925ms vs ~84ms on a 21-wagon schedule).
+      relationLoadStrategy: 'query',
       relations: {
         // Yards carry the route's display name; without them formatRouteLabel
         // degrades to the literal "Origin → Destination". Milestones (with