enhance shipment requests page with filtering and sorting options

- Added status and cargo filters to the ShipmentRequestsPage.
- Implemented date range filtering for preferred dates.
- Introduced sorting options for shipment requests based on submission date and reference.
- Enhanced the display of shipment request details, including status badges and customer information.
- Updated the UI to include a search input with clear functionality and improved layout for filters.

feat: add equipment return option in new shipment form

- Introduced a toggle for equipment return in the NewShipmentPage.
- Updated form schema to include  field for container contracts.
- Enhanced user experience with visual feedback on the equipment return selection.

fix: update booking DTO to include equipment return option

- Added  field to CreateBookingUnderContractDto for per-shipment override.
- Updated related types and schemas to accommodate the new field for better contract handling.

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

@@ -1,6 +1,7 @@
 import { Injectable, Logger } from '@nestjs/common';
 import {
   NotificationAudience,
+  NotificationPriority,
   NotificationType,
   NotifyInput,
 } from '@edr/types';
@@ -114,11 +115,15 @@ export class BookingNotifierService {
     const eat = deadline.toLocaleString('en-GB', { timeZone: 'Africa/Addis_Ababa' });
     const msg =
       `Only ${offeredWagons} of ${totalWagons} wagons fit the train for booking ${b.reference ?? b.id}. ` +
-      `Pay within ${payMinutes} minute${payMinutes === 1 ? '' : 's'} to accept and ship ${offeredWagons} wagon${offeredWagons === 1 ? '' : 's'} now ` +
-      `(the rest returns to your contract to book later). If you do not pay, the booking stays whole and you can rebook in the next window. Deadline: ${eat} EAT.`;
+      `Pay within ${payMinutes} minute${payMinutes === 1 ? '' : 's'} to accept and ship ${offeredWagons} wagon${offeredWagons === 1 ? '' : 's'} now. ` +
+      `The remaining ${totalWagons - offeredWagons} return${totalWagons - offeredWagons === 1 ? 's' : ''} to your contract — book them yourself in a later window. ` +
+      `If you do not pay, the booking stays whole and you can rebook in the next window. Deadline: ${eat} EAT.`;
     await this.notifyContact(b, msg, 'PAY NOW (PARTIAL)');
+    // HIGH: a split is a change to what the customer ordered AND a live payment
+    // deadline — it must reach email/SMS, not just the portal inbox.
     this.inApp(b, 'Partial allocation offer', msg, {
       type: NotificationType.INVOICE_ISSUED,
+      priority: NotificationPriority.HIGH,
     });
   }