New admin option (auto_unload_minutes, off by default): once nothing has run for that many minutes, the hub sets ComfyUI's unload_models queue flag, as the Unload models button does. A run or a waiting prompt restarts the clock; it unloads once per idle period. auto_unload_cache also clears the node cache (free_memory). Co-authored-by: Edouard Durand <xiaodoudou@users.noreply.github.com>