Implement prior archive cutoff API

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/api/src/organizations/dto.ts

@@ -12,6 +12,7 @@ import {
 } from 'class-validator';
 import { Type } from 'class-transformer';
 import { BUSINESS_FIELDS } from '@mento/shared';
+import type { UpdatePriorArchiveCutoffRequest } from '@mento/shared';
 
 export class ExchangeRateInputDto {
   @IsString()
@@ -67,3 +68,9 @@ export class UpdateOrganizationDto {
   @IsIn([...BUSINESS_FIELDS])
   businessField?: (typeof BUSINESS_FIELDS)[number];
 }
+
+export class UpdatePriorArchiveCutoffDto
+  implements UpdatePriorArchiveCutoffRequest
+{
+  cutoffAt!: string | null;
+}