- Implement full train import journey with six container bookings filling a 54-wagon train.
- Create tests for split offer and rebooking scenarios, handling payment expiry and waiting list promotions.
- Add tests for handling waiting bookings expiration when the train is full.
- Implement tests for reopening booking windows after expired reservations.
- Seed database with necessary corridor data for import flows, including yards, container types, locomotives, and rates.
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