feat: separate prior records behind an owner switch and count last-period questions

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

apps/api/src/common/record-scope.ts

@@ -20,6 +20,8 @@ export type Actor = {
   visibleUserIds?: string[] | null;
   /** سطح دید تفکیکی هر بخش (از Membership.dataVisibilityScopes) */
   scopes?: Partial<Record<DataScope, ScopeVisibility>>;
+  /** off = فیلتر خاموش؛ current = کار جاری؛ archive = بایگانی اطلاعات قبل */
+  priorLens?: 'off' | 'current' | 'archive';
 };
 
 export type ScopedActor = Pick<Actor, 'userId' | 'role' | 'dataVisibility' | 'visibleUserIds' | 'scopes'>;