finilize gl flow for export

apps/edr-freight-api/src/modules/contracts/entities/clearance-milestone.entity.ts

@@ -23,6 +23,8 @@ export interface MilestoneMetadata {
   dutyAmount?: number;
   dutyCurrency?: string;
   declarationSerial?: string;
+  /** When the gate pass was physically granted (GL DJ captures the time). */
+  gatepassAt?: string;
 }
 
 /**