Currently, the Kolab files module allows moving files from Seafile backend from one folder into a read-only folder. Apparently, the UI suggests that it is still possible to move a file into the read-only folder and shows it there, but then does not allow to move it out again:
Read-only libraries/folders in Seafile should be shown as such, maybe using a lock icon and then not allowing files to be moved/copied inside the folder in the first place.
Currently the UI is not aware of the access rights of folders. The same is for mail folders in Roundcube. While we do this for addressbook/calendar/tasks Alec is not sure it's good for Files and Mail. There might be possible problem with performance, as we expect more folders here, but maybe if we'd check rights only on shared folders it wouldn't be so bad. There's no performance problem for SeaFile as its API already returns access rights of a folder/library.
This request is specifically for Seafile, so it would be sufficient to check for read-only state for shared file folders via the Seafile API.