Function remove_device_files 

pub(crate) fn remove_device_files(id: &str) -> String

“Remove its files” pressed. The doses first: a device silent a day or more stops counting for them exactly as a forgotten one (its claims go with its files; a device that still counts here is forgotten by the sharing too, as “Forget it now” does); one heard of within a day may be in use, and keeps counting for them, its doubt said, until it has been silent a day (heard_lately; review of 17 October 2026, L7): the sharing alone forgets it. Then everything it wrote in the folder goes (share::remove_device_files). “” when it went, else why not.