changes export flow

apps/edr-freight-api/src/modules/bookings/entities/booking.entity.ts

@@ -351,6 +351,15 @@ export class Booking extends BaseEntity {
   @Column({ name: 'cargo_total_weight_vgm', type: 'numeric', precision: 12, scale: 3 })
   cargoTotalWeightVgm!: number;
 
+  /**
+   * Break-bulk only: actual total cargo weight in tons when the bulk cargo
+   * type is PER_ITEM (`cargoTotalWeightVgm` then carries the item COUNT).
+   * Null for PER_TON bulk and all CONTAINER bookings. Wagon allocation uses
+   * weight ÷ count to size indivisible items per wagon.
+   */
+  @Column({ name: 'bulk_total_weight_tons', type: 'numeric', precision: 12, scale: 3, nullable: true })
+  bulkTotalWeightTons?: number | null;
+
   @Column({ name: 'is_hazardous', type: 'boolean', default: false })
   isHazardous!: boolean;
 
@@ -485,6 +494,18 @@ export class Booking extends BaseEntity {
   @Column({ name: 'train_schedule_id', type: 'uuid', nullable: true })
   trainScheduleId?: string | null;
 
+  /**
+   * EXPORT only: the specific train the customer picked at day-commit.
+   * pickExportSchedule reserves on this train (409 if it no longer fits)
+   * instead of falling back to earliest-departure-first. NULL = no preference.
+   */
+  @Column({ name: 'requested_train_schedule_id', type: 'uuid', nullable: true })
+  requestedTrainScheduleId?: string | null;
+
+  /** Stamped when the one pre-deadline pay reminder went out (tick dedup). */
+  @Column({ name: 'payment_reminder_sent_at', type: 'timestamptz', nullable: true })
+  paymentReminderSentAt?: Date | null;
+
   // ── Per-booking journey (segment corridor bookings) ────────────────────────
   // A booking rides only its own origin→destination leg of the train's route,
   // so dispatch/arrival are per-booking facts, not train facts. Clearance gates