SOLVED: Media scan stuck at 96%

[Efficient_Good_5784]

maybe piece it together a little at a time; move the last few files it scans in the log out of the library path?

I second this, but in reverse.

Make a new dataset/folder location and copy one or two shows/movies into it. Then make a new blank config location for Jellyfin.
Set up Jellyfin to use the new blank config folder and the new small media location only.
See if this new installation works. Basically, you'll be seeing if a brand-new Jellyfin install will scan to 100%.

If this does work, then it's a process of elimination of which dataset/folder or file is causing the issue.

I was also thinking it might be a plugin you have installed. The new Jellyfin install shouldn't have any plugin installed, but you could add them back one-by-one to see if this is also the issue.