After I manually emptied the assets (just leaving index.html), I return to admin page and open an inactive survey in preview.

Right there, on the 1st screen of the survey, I have already 41 folders and 5'216 files created under /survey/tmp/assets/

On a shared hosting with a total limit of 300'000 files (only 80'000 remaining), I am afraid that the capacity will be reached quite fast after I have activated the survey... with catastrophic consequences.

How can I set a limit above which older temporary assets are automatically deleted / recycled ?