feat: add admin user leaderboard analytics

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

@@ -6,6 +6,8 @@ import {
   deleteAdminMemoryEntry,
   deleteAdminV1Fact,
   getUserMemory,
+  getUserAnalytics,
+  getUserLeaderboard,
   listUserThreadMessages,
   listUserThreads,
   replaceAdminMemoryEntry,
@@ -13,6 +15,21 @@ import {
   updateAdminV1Section,
 } from "./api";
 
+export function useUserLeaderboard(days: number, limit = 20) {
+  return useQuery({
+    queryKey: ["admin-activity", "leaderboard", days, limit],
+    queryFn: () => getUserLeaderboard(days, limit),
+  });
+}
+
+export function useUserAnalytics(userId: string | null, days: number, limit = 20) {
+  return useQuery({
+    queryKey: ["admin-activity", "analytics", userId, days, limit],
+    queryFn: () => getUserAnalytics(userId!, days, limit),
+    enabled: !!userId,
+  });
+}
+
 /** Threads owned by a given user. Disabled until a user is picked. */
 export function useUserThreads(userId: string | null) {
   return useQuery({