enhance leaderboard reporting and grouping

frontend-web/src/core/admin/hooks.ts

@@ -5,6 +5,7 @@ import {
   addAdminV1Fact,
   deleteAdminMemoryEntry,
   deleteAdminV1Fact,
+  generateUserLeaderboardReport,
   getUserMemory,
   getUserAnalytics,
   getUserLeaderboard,
@@ -47,6 +48,18 @@ export function useUserAnalytics(
   });
 }
 
+export function useGenerateUserLeaderboardReport() {
+  return useMutation({
+    mutationFn: ({
+      range,
+      limit,
+    }: {
+      range: { since: string; until: string; days?: number };
+      limit?: number;
+    }) => generateUserLeaderboardReport(range, limit ?? 30),
+  });
+}
+
 /** Threads owned by a given user. Disabled until a user is picked. */
 export function useUserThreads(userId: string | null) {
   return useQuery({