Is it possible to scan for new episodes for a specific show/season?
I don’t like to perform a full scan every time I add a new episode.
I very much doubt it, the library / share re-scan feature is simple enough. Either that or set it to update automatically daily.
Plasma
Plasma is right, there is currently no way to only scan a specific directory.
The good news however, is that after the first initial scan any subsequent scans will only look at new/changed files so they will go much, much quicker.