Content-cleanup of the TALK Directory in the appropr. storage location

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Is your feature request related to a problem? Please describe.
All the web stuff from Talk will - per user - saved in the "TALK" Directory.
This directory is growing ..

Describe the solution you'd like
i did not see any options to & how to control the cleaning of the Talk Directory.
Is there some kind of "hidden" functionality, where the Talk - directory content will be cleaned (or even archived) on a regular base ?

Describe alternatives you've considered
This would be a fine option .. if there would be a user control option for that and a administrator option
(where the Admin could control the cleanup behave on a global level)

Additional context
Add any other context or screenshots about the feature request here.

The issue names no files, tests, or entry points. Start by locating where Talk stores per-user content and how retention or archiving is currently handled; clarify the desired user and administrator controls before implementation. Done would require an agreed cleanup or archive behavior and corresponding controls.