Replace wagon/locomotive readiness with yard tracking, assign unassigned bookings from origin-yard fleet, standardize rates on USD with CBE ETB conversion, and update fleet/scheduling UI

apps/edr-freight-web/backoffice/src/hooks/trainScheduling/useTrainScheduling.ts

@@ -197,6 +197,12 @@ export const useScheduleMutations = (scheduleId?: string) => {
     onSuccess: invalidate,
   });
 
+  const assignUnassigned = useMutation({
+    mutationFn: ({ id, bookingId }: { id: string; bookingId: string }) =>
+      trainSchedulingService.assignUnassignedBooking(id, bookingId),
+    onSuccess: invalidate,
+  });
+
   const unassign = useMutation({
     mutationFn: ({ id, bookingId }: { id: string; bookingId: string }) =>
       trainSchedulingService.unassignBooking(id, bookingId),
@@ -240,6 +246,7 @@ export const useScheduleMutations = (scheduleId?: string) => {
     create,
     preview,
     assign,
+    assignUnassigned,
     unassign,
     pin,
     finalize,