add goverment booking

apps/edr-freight-api/src/modules/scheduling-reschedule/scheduling-reschedule.service.ts

@@ -139,6 +139,17 @@ export class SchedulingRescheduleService {
     actorUserId?: string,
   ) {
     const plan = await this.previewReschedule(scheduleId, dto);
+    // Gov bookings may never be pushed off a train. Checked here (not only in
+    // unassignBooking) because the displacement loop below swallows unassign
+    // errors and force-detaches the booking anyway.
+    const govDisplaced = plan.displaced.filter((b) => b.isGovernment);
+    if (govDisplaced.length) {
+      throw new BadRequestException(
+        `Government bookings cannot be removed from a train: ${govDisplaced
+          .map((b) => b.reference)
+          .join(', ')}`,
+      );
+    }
     const expectedDisplaced = new Set(plan.displaced.map((b) => b.id));
     const providedDisplaced = new Set(dto.displacedBookingIds);
     if (