It turns out that plugin was written for Jellyfin v10.10.6/.NET 8.0 and wouldn't run for Jellyfin 10.11.x. I'm not a C#/.NET guy but I forked the repository, muddled through, and have it working locally for my Jellyfin instance. I want to review what I did before I update my changes to github, which I hope to do early next week so that others can try it and provide feedback.
Jellyfin media segments expect the Comskip EDL file to have a "3" for the segment type to indicate a commercial, but Comskip was defaulting to a 0 for the segment type. You can either manually update your EDL files, or put the line "edl_skip_field=3" (no quotes) in your comskip.ini file and rerun Comskip. The EDL files should be in the same directory as the media files, and have the same name as the media file but with an .edl extension. This SHOULD be the default for comskip (e.g. If the media file is "Some Media File.ts" then the EDL file should be "Some Media File.edl".)
Jellyfin media segments expect the Comskip EDL file to have a "3" for the segment type to indicate a commercial, but Comskip was defaulting to a 0 for the segment type. You can either manually update your EDL files, or put the line "edl_skip_field=3" (no quotes) in your comskip.ini file and rerun Comskip. The EDL files should be in the same directory as the media files, and have the same name as the media file but with an .edl extension. This SHOULD be the default for comskip (e.g. If the media file is "Some Media File.ts" then the EDL file should be "Some Media File.edl".)