feat: update booking form to remove per-route quantity input for general contracts

apps/edr-freight-api/src/modules/booking-orders/entities/booking-order-line.entity.ts

@@ -3,6 +3,16 @@ import { Column, Entity, JoinColumn, ManyToOne } from 'typeorm';
 import { ContainerType } from '../../rule-engine/entities/container-type.entity';
 import { BookingOrder } from './booking-order.entity';
 
+/**
+ * Postgres `numeric` columns are serialized to JS strings by the driver. This
+ * transformer hydrates them back into real numbers so consumers (and the
+ * `quantity: number` API type) don't have to coerce on every read.
+ */
+const numericColumn = {
+  to: (value: number) => value,
+  from: (value: string | null) => (value == null ? value : Number(value)),
+};
+
 /**
  * One drawn-down quantity line of an order. For CONTAINER contracts there is one
  * line per container type (matching the contract's pools); for BULK/BREAK_BULK a
@@ -25,7 +35,7 @@ export class BookingOrderLine extends BaseEntity {
   containerType?: ContainerType | null;
 
   /** Containers (count), tons, or items depending on the contract's freight/UoM. */
-  @Column({ name: 'quantity', type: 'numeric', precision: 12, scale: 3 })
+  @Column({ name: 'quantity', type: 'numeric', precision: 12, scale: 3, transformer: numericColumn })
   quantity!: number;
 
   /**
@@ -33,9 +43,23 @@ export class BookingOrderLine extends BaseEntity {
    * customer when they toggle the flag. Drives the HAZARD_SURCHARGE /
    * REEFER_SURCHARGE rates on the spawned child booking. Both ≤ quantity.
    */
-  @Column({ name: 'hazardous_quantity', type: 'numeric', precision: 12, scale: 3, default: 0 })
+  @Column({
+    name: 'hazardous_quantity',
+    type: 'numeric',
+    precision: 12,
+    scale: 3,
+    default: 0,
+    transformer: numericColumn,
+  })
   hazardousQuantity!: number;
 
-  @Column({ name: 'reefer_quantity', type: 'numeric', precision: 12, scale: 3, default: 0 })
+  @Column({
+    name: 'reefer_quantity',
+    type: 'numeric',
+    precision: 12,
+    scale: 3,
+    default: 0,
+    transformer: numericColumn,
+  })
   reeferQuantity!: number;
 }