feat(bookings): add estimated shipment date handling and validation for binding shipment day

apps/edr-freight-api/src/migrations/1820000000012-AddEstimatedShipmentDate.ts

@@ -0,0 +1,26 @@
+import { MigrationInterface, QueryRunner } from 'typeorm';
+
+/**
+ * The booking wizard now captures a NON-BINDING estimated shipment date instead
+ * of the binding scheduledDate. The binding scheduledDate (validated against
+ * open train departures) is set later, at the operation-request step.
+ */
+export class AddEstimatedShipmentDate1820000000012
+  implements MigrationInterface
+{
+  name = 'AddEstimatedShipmentDate1820000000012';
+
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+      ALTER TABLE freight.bookings
+        ADD COLUMN IF NOT EXISTS estimated_shipment_date timestamptz NULL;
+    `);
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+      ALTER TABLE freight.bookings
+        DROP COLUMN IF EXISTS estimated_shipment_date;
+    `);
+  }
+}