I have my complete data directory, but cant seem to find any path to rebuilding other than restoring the backup… that really does appear to be complete bar the interface not seeing it. There’s got to be SOME way to just redetect the data sitting in the directories?!?
If you have the complete data directory, you can try re-scanning files with occ files:scan --all to make Nextcloud re-index user data. Make sure ownership/permissions match your web server user. Also, check config.php for correct data directory path. If Borg didn’t restore metadata properly, manually placing files may need cleanup via occ commands.