Add booking window management and locomotive scheduling features

- Implemented migration to release stuck assigned locomotives.
- Added schedule window phases to train schedules.
- Created booking batch offers table for partial capacity bookings.
- Developed BookingSplitService to handle partial booking offers and splits.
- Introduced BookingWindowService to manage booking window lifecycle and transitions.
- Added BookingBatchOffer entity to represent offers made during booking splits.
- Enhanced locomotive options with warnings for scheduling.
- Created UpcomingWindowsSection component to display upcoming booking windows.

apps/edr-freight-api/src/modules/train-schedules/entities/train-schedule.entity.ts

@@ -83,6 +83,34 @@ export class TrainSchedule extends BaseEntity {
   @Column({ name: 'booking_window_status', type: 'varchar', length: 10, default: 'OPEN' })
   bookingWindowStatus!: string;
 
+  /**
+   * Booking-window lifecycle for the one-booking-day cycle
+   * (PRE_WINDOW → OPEN → DOC_REVIEW → PAYMENT → reopen | CLOSED_FOR_DAY | DONE).
+   * NULL on legacy and DOMESTIC schedules — the window engine ignores those.
+   */
+  @Column({ name: 'window_phase', type: 'varchar', length: 20, nullable: true })
+  windowPhase?: string | null;
+
+  @Column({ name: 'window_opens_at', type: 'timestamptz', nullable: true })
+  windowOpensAt?: Date | null;
+
+  @Column({ name: 'window_closes_at', type: 'timestamptz', nullable: true })
+  windowClosesAt?: Date | null;
+
+  @Column({ name: 'doc_review_ends_at', type: 'timestamptz', nullable: true })
+  docReviewEndsAt?: Date | null;
+
+  /** Staff finished document review early — starts the batch/payment phase immediately. */
+  @Column({ name: 'doc_review_completed_at', type: 'timestamptz', nullable: true })
+  docReviewCompletedAt?: Date | null;
+
+  @Column({ name: 'payment_phase_ends_at', type: 'timestamptz', nullable: true })
+  paymentPhaseEndsAt?: Date | null;
+
+  /** 1-based count of open→settle cycles run on the booking day. */
+  @Column({ name: 'booking_cycle_no', type: 'int', default: 0 })
+  bookingCycleNo!: number;
+
   @OneToMany(() => TrainScheduleBooking, (scheduleBooking) => scheduleBooking.trainSchedule)
   scheduleBookings?: TrainScheduleBooking[];
 }