add lashing surcharge for cargo types with hasLashing flag

add lashing surcharge for cargo types with hasLashing flag

apps/edr-freight-api/src/modules/rule-engine/entities/cargo-type.entity.ts

@@ -53,6 +53,14 @@ export class CargoType extends BaseEntity {
   @Column({ name: 'requires_director_approval', type: 'boolean', default: false })
   requiresDirectorApproval!: boolean;
 
+  /**
+   * When true, any booking of this cargo type incurs the flat LASHING surcharge
+   * (the LASHING-trigger rate). Set on commodities that need EDR-provided
+   * lashing/securing; leave false for cargo that ships without it.
+   */
+  @Column({ name: 'has_lashing', type: 'boolean', default: false })
+  hasLashing!: boolean;
+
   @Column({ name: 'is_active', type: 'boolean', default: true })
   isActive!: boolean;
 

apps/edr-freight-api/src/modules/rule-engine/entities/rate-type.util.ts

@@ -30,6 +30,7 @@ export function deriveRateType(input: {
       case 'SHIPPING_LINE':
         return 'DOUBLE_HANDLING';
       case 'CONSOLIDATION':
+      case 'LASHING':
         return 'LASHING';
       case 'CANCELLATION':
         return 'CANCELLATION_FEE';

apps/edr-freight-api/src/modules/rule-engine/entities/rate-unit.util.ts

@@ -36,6 +36,9 @@ export function allowedRateUnits(input: {
       case 'CUSTOMS_CLEARANCE':
         // Flat per clearance (ONE_TIME contract) / per shipment request (GENERAL).
         return ['FLAT'];
+      case 'LASHING':
+        // Flat cargo-securing fee, billed once per booking.
+        return ['FLAT'];
       case 'CONSOLIDATION':
         return ['PER_CONTAINER', 'FLAT'];
       case 'SHIPPING_LINE':

apps/edr-freight-api/src/modules/rule-engine/entities/rate.entity.ts

@@ -78,6 +78,9 @@ export const RATE_TRIGGERS = [
   'WITH_RETURN',
   'SHIPPING_LINE',
   'CONSOLIDATION',
+  // Cargo securing / lashing. Fires when the booking's cargo type has
+  // hasLashing = true. Flat fee, billed once per booking.
+  'LASHING',
   'CANCELLATION',
   'DEMURRAGE',
   'PIL_EXTRA_FEE',