fix u=issue

apps/edr-freight-api/src/modules/train-scheduling/dto/maintenance-reschedule.dto.ts

@@ -0,0 +1,39 @@
+import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';
+import { IsArray, IsISO8601, IsOptional, IsString, IsUUID } from 'class-validator';
+
+/**
+ * Admin maintenance reschedule: move a train's departure to a new date/time.
+ * Every allocated booking rides along (links and wagon assignments untouched);
+ * only the dates move — the schedule's train set, route, and window rule
+ * snapshot all stay exactly as they were.
+ */
+export class MaintenanceRescheduleDto {
+  @ApiProperty({
+    example: '2026-07-20T05:00:00.000Z',
+    description: 'New scheduled departure date/time (ISO 8601)',
+  })
+  @IsISO8601()
+  newDepartureDate!: string;
+
+  @ApiPropertyOptional({ description: 'Why the train is being moved (logged)' })
+  @IsOptional()
+  @IsString()
+  reason?: string;
+
+  @ApiPropertyOptional({
+    description: 'Client-side trigger tag (e.g. TRAIN_MAINTENANCE) — logged only',
+  })
+  @IsOptional()
+  @IsString()
+  trigger?: string;
+
+  @ApiPropertyOptional({
+    description:
+      "The bookings the client believes are aboard — informational; the server moves the schedule's actual bookings",
+    type: [String],
+  })
+  @IsOptional()
+  @IsArray()
+  @IsUUID('4', { each: true })
+  incomingBookingIds?: string[];
+}