Not exactly what you’ve asked for but within settings webui there is a session timeout you could set to 60 seconds or even less I think, for me it doesn’t stop my active session but if I close the browser and revisit after the time set I have to login again.
You can rename through the client but it would be nice if the clients could also use a hash, then when it detects a file is missing it could just scan the dir for a matching file automatically.