feat: Implement handling for partially loaded bookings in train scheduling

- Added  to manage decisions on partially loaded bookings during log-pass and dispatch actions.
- Enhanced  to track and manage bookings left behind when a train departs a yard.
- Updated  and  to pass necessary station data for handling partially loaded bookings.
- Modified  and  to account for customer-fault fees and ensure proper handling of credits.
- Introduced fault tracking in  interface to differentiate between customer and EDR faults.

apps/edr-freight-api/src/modules/bookings/booking-wagon-cancellation.service.spec.ts

@@ -232,3 +232,91 @@ describe('BookingWagonCancellationService.buildRebookDto (bulk wagon count)', ()
     expect(dto.requestedWagons).toBeUndefined();
   });
 });
+
+/**
+ * The cancellation fee is paid BEFORE the credit is redeemed.
+ *
+ * An at-loading cut applies immediately and opens the credit while its fee
+ * invoice stays open, so CREDIT_AVAILABLE on its own never means the fee was
+ * settled. Without the gate the customer rebooks the same wagons and the
+ * cancellation fee is simply never collected. EDR-fault cuts carry no fee and
+ * must stay freely rebookable — partial or whole, container or bulk.
+ */
+describe('BookingWagonCancellationService.rebook (cancellation fee gate)', () => {
+  const source = {
+    id: 'b1',
+    contractId: 'c1',
+    paymentCurrency: 'ETB',
+    originYardId: 'y1',
+    destinationYardId: 'y2',
+    tradeDirection: 'IMPORT',
+  };
+
+  const makeSvc = (row: Record<string, unknown>) => {
+    const svc = Object.create(BookingWagonCancellationService.prototype) as Record<
+      string,
+      unknown
+    > & { rebook(id: string, dto: unknown): Promise<unknown> };
+    svc.repo = { findById: async () => row };
+    svc.bookingsRepository = {
+      findById: async () => source,
+      findByIdWithFiles: async () => null,
+    };
+    return svc;
+  };
+
+  /** Bulk credit — no bySize, so nothing depends on container snapshots. */
+  const bulkRow = (over: Record<string, unknown>) => ({
+    id: 'wc1',
+    bookingId: 'b1',
+    status: 'CREDIT_AVAILABLE',
+    creditAmount: 5000,
+    wagonsCancelled: 2,
+    cancelledQuantities: { bulkTons: 100 },
+    feeCurrency: 'ETB',
+    ...over,
+  });
+
+  it('blocks a rebook while a customer-fault fee is unpaid', async () => {
+    const svc = makeSvc(
+      bulkRow({ fault: 'CUSTOMER', feeAmount: 1500, feePaidAt: null }),
+    );
+    await expect(svc.rebook('wc1', { scheduledDate: '2026-09-01' })).rejects.toThrow(
+      /pay the ETB 1500\.00 cancellation fee for 2 wagon\(s\)/i,
+    );
+  });
+
+  it('blocks a WHOLE-booking customer-fault cancel just the same', async () => {
+    const svc = makeSvc(
+      bulkRow({ fault: 'CUSTOMER', feeAmount: 4000, feePaidAt: null, wagonsCancelled: 4 }),
+    );
+    await expect(svc.rebook('wc1', { scheduledDate: '2026-09-01' })).rejects.toThrow(
+      /4 wagon\(s\) before rebooking/i,
+    );
+  });
+
+  it('lets the rebook through once the fee is paid', async () => {
+    const svc = makeSvc(
+      bulkRow({ fault: 'CUSTOMER', feeAmount: 1500, feePaidAt: new Date() }),
+    );
+    // Past the gate it fails later (no contract/create wiring in this harness) —
+    // what matters is that it is no longer the fee that stops it.
+    await expect(
+      svc.rebook('wc1', { scheduledDate: '2026-09-01' }),
+    ).rejects.not.toThrow(/cancellation fee/i);
+  });
+
+  it('never charges an EDR-fault cut', async () => {
+    const svc = makeSvc(bulkRow({ fault: 'EDR', feeAmount: 0, feePaidAt: null }));
+    await expect(
+      svc.rebook('wc1', { scheduledDate: '2026-09-01' }),
+    ).rejects.not.toThrow(/cancellation fee/i);
+  });
+
+  it('leaves legacy rows without a fee untouched', async () => {
+    const svc = makeSvc(bulkRow({ fault: null, feeAmount: 0, feePaidAt: null }));
+    await expect(
+      svc.rebook('wc1', { scheduledDate: '2026-09-01' }),
+    ).rejects.not.toThrow(/cancellation fee/i);
+  });
+});

apps/edr-freight-api/src/modules/bookings/booking-wagon-cancellation.service.ts

@@ -1003,6 +1003,18 @@ export class BookingWagonCancellationService {
         'This cancellation has no rebooking credit — the booking was never paid. Create a new booking instead.',
       );
     }
+    // Customer-fault fee settles BEFORE the credit is redeemed. An at-loading
+    // cut applies immediately and opens the credit while its invoice stays
+    // open, so CREDIT_AVAILABLE alone does not mean the fee was paid — without
+    // this the customer rebooks the wagons and never pays the cancellation
+    // fee the notice already promised. EDR fault carries no fee and is
+    // unaffected; onFeePaid stamps feePaidAt and the gate opens by itself.
+    if (row.fault === 'CUSTOMER' && Number(row.feeAmount) > 0 && !row.feePaidAt) {
+      throw new BadRequestException(
+        `Pay the ${row.feeCurrency} ${Number(row.feeAmount).toFixed(2)} cancellation fee for ` +
+          `${Math.ceil(Number(row.wagonsCancelled))} wagon(s) before rebooking this credit.`,
+      );
+    }
     const source = await this.bookingsRepository.findById(row.bookingId);
     if (!source) throw new NotFoundException(`Booking ${row.bookingId} not found.`);
     if (!source.contractId) {