view data fixes

apps/website/lib/builders/view-data/LeaguesViewDataBuilder.ts

@@ -7,7 +7,14 @@ import type { LeaguesViewData } from '@/lib/view-data/LeaguesViewData';
  * Transforms AllLeaguesWithCapacityAndScoringDTO (API DTO) into LeaguesViewData for server-side rendering.
  * Deterministic; side-effect free; no HTTP calls.
  */
-export class LeaguesViewDataBuilder {
+import { ViewDataBuilder } from "../../contracts/builders/ViewDataBuilder";
+
+export class LeaguesViewDataBuilder implements ViewDataBuilder<any, any> {
+  build(input: any): any {
+    return LeaguesViewDataBuilder.build(input);
+  }
+
+  static build(
   static build(apiDto: AllLeaguesWithCapacityAndScoringDTO): LeaguesViewData {
     return {
       leagues: apiDto.leagues.map((league) => ({