feat(train-scheduling): show coupled/uncoupled wagons on intercity marshalling doc

Marshalling 2 rendered only the final consist after a mid-corridor
adjustScheduleConsist call, with no signal that anything changed.
Reuses the existing ScheduleWagonAdjustmentLog (already recording
every ADD/REMOVE/SWITCH) filtered to the printed stop's yard and to
ADD/SWITCH, and prints a Consist changed at this stop box. Origin
import/export docs are untouched — the option is only passed from
intercityMarshallingDocument.

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

@@ -1209,6 +1209,32 @@ describe('TrainSchedulingService', () => {
       expect(html).toContain('<span>To load en route</span><strong>1 containers</strong>');
     });
 
+    it('prints coupled/switched wagons logged at this stop, and omits the box when there are none', () => {
+      const schedule = {
+        id: 'schedule-1',
+        trainNumber: '8302',
+        direction: 'EXPORT',
+        trainSet: { wagons: [{ ...makeWagon(1, 'W-001', [loadedAllocation]), id: 'slot-1' }] },
+        scheduleBookings: [],
+      };
+      const build = (service as never as {
+        buildExportLoadListHtml: (s: unknown, o?: unknown) => string;
+      }).buildExportLoadListHtml.bind(service);
+
+      const withChanges = build(schedule, {
+        consistChangesAtStop: [
+          { action: 'ADD', wagonNumber: 'W-1002' },
+          { action: 'SWITCH', wagonNumber: 'W-0501 → W-1003' },
+        ],
+      });
+      expect(withChanges).toContain('Consist changed at this stop');
+      expect(withChanges).toContain('Coupled: W-1002');
+      expect(withChanges).toContain('Uncoupled — replaced: W-0501 → W-1003');
+
+      const withoutChanges = build(schedule, {});
+      expect(withoutChanges).not.toContain('Consist changed at this stop');
+    });
+
     it('lists loaded empty containers by number and states they are empty', () => {
       const schedule = {
         id: 'schedule-1',

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

@@ -3558,6 +3558,16 @@ export class TrainSchedulingService {
       : `At ${schedule.originStation?.label ?? schedule.originStation?.code ?? 'origin'} — no checkpoint recorded`;
 
     const { wagons, unassignedBookings } = this.intercityOnBoardView(schedule);
+    // Couples/switches logged AT THIS STOP — what staff standing here actually
+    // just did to the consist. Bare trims (REMOVE, no replacement) are left
+    // out: nothing new to point staff at for those. Origin adjustments (a
+    // different yard) don't show up on this stop's document.
+    const consistChangesAtStop = last
+      ? await this.dataSource.getRepository(ScheduleWagonAdjustmentLog).find({
+          where: { trainScheduleId: scheduleId, yardId: last.yardId, action: In(['ADD', 'SWITCH']) },
+          order: { occurredAt: 'DESC' },
+        })
+      : [];
     const html = this.buildExportLoadListHtml(schedule, {
       title: 'Intercity Marshalling Document / Load List (Marshalling 2)',
       positionLabel,
@@ -3565,6 +3575,7 @@ export class TrainSchedulingService {
       unassignedBookings,
       emptyContainers: await this.loadedEmptyContainers(scheduleId),
       logoImageUrl: await this.logoSettings.getLogoImageUrl(),
+      consistChangesAtStop,
     });
     // Styled table-aware fallback (marshalling grid) — see importLoadListDocument.
     const buffer = await this.pdfDocuments.renderTabularDocument(html, 'Intercity marshalling / load list');
@@ -3634,6 +3645,10 @@ export class TrainSchedulingService {
       // Slots that couple to the train downstream (slot id → board yard label).
       // Their cargo renders as TO LOAD AT and stays out of the loaded tallies.
       pendingBoardYardLabelBySlot?: Map<string, string>;
+      // Intercity (Marshalling 2) only: couples/switches logged at the stop
+      // this document is printed at (see ScheduleWagonAdjustmentLog). Origin
+      // import/export docs never pass this, so they render no such box.
+      consistChangesAtStop?: ScheduleWagonAdjustmentLog[];
     },
   ): string {
     const esc = (value: unknown) =>
@@ -3844,6 +3859,24 @@ export class TrainSchedulingService {
     ${opts?.positionLabel ? `<div class="tile"><span>Current position</span><strong>${esc(opts.positionLabel)}</strong></div>` : ''}
   </div>
 
+  ${
+    opts?.consistChangesAtStop?.length
+      ? `<div class="notice">
+    <b>Consist changed at this stop:</b>
+    ${(() => {
+      const coupled = opts.consistChangesAtStop.filter((row) => row.action === 'ADD');
+      const switched = opts.consistChangesAtStop.filter((row) => row.action === 'SWITCH');
+      return [
+        coupled.length ? `Coupled: ${esc(coupled.map((row) => row.wagonNumber).join(', '))}` : '',
+        switched.length ? `Uncoupled — replaced: ${esc(switched.map((row) => row.wagonNumber).join(', '))}` : '',
+      ]
+        .filter(Boolean)
+        .join(' &nbsp;|&nbsp; ');
+    })()}
+  </div>`
+      : ''
+  }
+
   <table>
     <thead>
       <tr>