Fix session replay: fetch newest messages from tail, not oldest from start

lib/hooks.ts

@@ -19,10 +19,10 @@ export function useSession(id: string) {
   });
 }
 
-export function useMessages(sessionId: string, limit = 200) {
+export function useMessages(sessionId: string, limit = 200, offset?: number) {
   return useQuery({
-    queryKey: ["messages", sessionId, limit],
-    queryFn: () => api.fetchMessages(sessionId, limit),
+    queryKey: ["messages", sessionId, limit, offset],
+    queryFn: () => api.fetchMessages(sessionId, limit, offset),
     enabled: !!sessionId,
   });
 }