Automatically delete locked threads from favorites

[irigone]

I browse 4chan/g/ and it's annoying to delete each favorite thread when it reaches the bump limit or gets locked after a few hours. Then I add a newer thread to favorites and I have 2 threads with the same name therr.
Maybe make a button that deletes all locked threads?
Maybe allow selecting threads and delete them instead of long pressing each one?
Maybe make a button that deletes threads with similar subjects? For example, on /g/ there's /fglt/, if a more recent /fglt/ thread appears in the favorites, delete all the older /fglt/ threads.
Or do it automatically IDK