feat(library): add strategy parameter for item fetching and update filter preview

k-tv-frontend/lib/api.ts

@@ -129,6 +129,7 @@ export const api = {
       token: string,
       filter: Pick<MediaFilter, "content_type" | "series_names" | "collections" | "search_term" | "genres">,
       limit = 50,
+      strategy?: string,
     ) => {
       const params = new URLSearchParams();
       if (filter.search_term) params.set("q", filter.search_term);
@@ -136,6 +137,7 @@ export const api = {
       filter.series_names?.forEach((name) => params.append("series[]", name));
       if (filter.collections?.[0]) params.set("collection", filter.collections[0]);
       params.set("limit", String(limit));
+      if (strategy) params.set("strategy", strategy);
       return request<LibraryItemResponse[]>(`/library/items?${params}`, { token });
     },
   },