view data fixes

apps/website/lib/view-data/LeagueRosterAdminViewData.ts

@@ -1,3 +1,5 @@
+import { ViewData } from '@/lib/contracts/view-data/ViewData';
+
 /**
  * LeagueRosterAdminViewData - Pure ViewData for RosterAdminPage
  * Contains only raw serializable data, no methods or computed properties
@@ -25,7 +27,8 @@ export interface JoinRequestData {
   message?: string;
 }
 
-export interface LeagueRosterAdminViewData {
+
+export interface LeagueRosterAdminViewData extends ViewData {
   leagueId: string;
   members: RosterMemberData[];
   joinRequests: JoinRequestData[];