Use rails logger

app/services/nostr_manager/fetch_latest_event.rb

@@ -20,7 +20,7 @@ module NostrManager
         end
 
         if received_events >= @max_events
-          puts "Found #{@max_events} events, ending the search"
+          Rails.logger.debug "Found #{@max_events} events, ending the search"
           break
         end
       end