Playground by option and archives Doc clear up automatically (I make by Cron)
reverence-page for Playground-replacement
I am sure there is a tip explaining this at wiki.splitbrain.org. If not you should add your implementation there. I don't think this is required for main codebase. It could be supported in an action plugin for those that need it.
i use a cron script.
you want this? (playground clean, blocklist update, daily/weekly/monthly-backup.
(it took a time, until i had that script written, i am not a lunix crack ;). could by put in dokuwiki as example.)