fix(freight): fixed some issues

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

@@ -37,7 +37,7 @@ const makeBooking = (
   scheduledDate: new Date(scheduledDate),
   originYardId,
   destinationYardId,
-  status: 'APPROVED',
+  status: 'PAID',
   customer: { companyName: 'Demo Customer' },
   originYard: { label: 'Djibouti', code: 'DJIBOUTI' },
   destinationYard: { label: 'Addis Ababa', code: 'ADDIS_ABABA' },
@@ -163,6 +163,44 @@ describe('TrainSchedulingService', () => {
     );
   });
 
+  it('rejects bookings that are not in schedulable status', async () => {
+    const bookings = [
+      {
+        ...makeBooking('b7', 'BKG-CONT-007', 120, 2, '40FT'),
+        status: 'APPROVED',
+      },
+    ];
+
+    wagonTypesRepository.findAll.mockResolvedValue([nw5]);
+    dataSource.getRepository.mockImplementation((entity: { name?: string }) => {
+      if (entity?.name === 'Booking') {
+        return { find: jest.fn().mockResolvedValue(bookings) };
+      }
+      if (entity?.name === 'TrainScheduleBooking') {
+        return { find: jest.fn().mockResolvedValue([]) };
+      }
+      if (entity?.name === 'Locomotive') {
+        return {
+          count: jest.fn().mockResolvedValue(1),
+          find: jest.fn().mockResolvedValue([locomotive]),
+        };
+      }
+      throw new Error(`Unexpected repository ${entity?.name}`);
+    });
+
+    const result = await service.previewContainerTrainSchedule({
+      bookingIds: ['b7'],
+      scheduleDate: '2026-06-20T08:00:00.000Z',
+      originStationId: 'yard-origin',
+      destinationStationId: 'yard-destination',
+    });
+
+    expect(result.valid).toBe(false);
+    expect(result.violations).toContain(
+      'Only PAID bookings can be scheduled; received: APPROVED',
+    );
+  });
+
   it('creates a schedule transactionally when validation passes', async () => {
     const bookings = [makeBooking('b1', 'BKG-CONT-001', 140, 2, '40FT')];
     const validation = {