Sort an existing YouTube playlist into Surah order without deleting or adding videos.
Public videos are classified conservatively. Private, deleted, unavailable, and unresolved videos become UNKNOWN and go to the end. Multi-Surah videos use the lowest identified Surah number and follow single-Surah videos assigned to that same Surah.
The sorter only changes the positions of existing playlist items. It does not delete videos, add videos, replace videos, or create a new playlist. Before writing, it checks that the playlist has not changed since the preview, and afterward it verifies the final order.