fix issue

apps/edr-freight-api/src/modules/rule-engine/interfaces/rates.repository.interface.ts

@@ -14,7 +14,8 @@ export interface IRatesRepository {
   findLiveRatesDetailed(): Promise<Rate[]>;
   findByPattern(pattern: {
     rateType: string;
-    rateUnit: string;
+    /** Omitted for singly-resolved rates — see the repository implementation. */
+    rateUnit?: string;
     containerTypeId?: string | null;
     cargoTypeId?: string | null;
     tradeDirection?: string | null;