add company stamp upload functionality for contract signing

- Introduced StampUpload component for uploading company stamp images.
- Integrated stamp upload in contract signing modal, supporting PNG and JPG formats.
- Implemented validation for file type and size (max 5 MB).
- Added visual feedback for drag-and-drop functionality.
- Updated contract-related pages to handle duplicate contract alerts and pricing notices.
- Enhanced contract expiry management with a nightly sweep service.
- Added unit tests for new features and updated existing tests for contract handling.

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

@@ -3000,6 +3000,22 @@ export class BookingBatchService implements OnModuleInit {
     }
   }
 
+  /**
+   * How many bookings on this route-day would be expired if document review
+   * ended right now — i.e. requests staff have neither accepted nor rejected.
+   * Same query the doc-review-end sweep runs, so the number staff see is
+   * exactly what is at risk.
+   */
+  async countUnacceptedForRouteDay(group: RouteDayGroup): Promise<number> {
+    const corridorYards = await this.corridorYardsForRouteDay(group);
+    if (corridorYards.length === 0) return 0;
+    const unaccepted = await this.bookingsRepository.findUnacceptedForRouteDay(
+      corridorYards,
+      group.day,
+    );
+    return unaccepted.length;
+  }
+
   /**
    * Free capacity for a government booking by displacing the lowest-priority commercial
    * bookings (reserved first, then allocated — including PAID). Displaced → EXPIRED + notified.