- Some way for the add to elastic callback to skip existing keys if not doing a full search

Later:
- Add a wildcard option to restricted_download_paths to block all sub-directories
- Add a dict to each restricted_download_paths item to specify how many levels recursive the block should be applied
- add a "last modified" to "sort" https://chub-archive.evulid.cc/api/file/list?path=/chub.ai/characters&page=1&limit=50&sort=folders
- add an admin endpoint to fetch the last n modified files.