Swagger UI attachments

Swagger UI does not allow adding attachments because the file upload field does not work. Perhaps upgrading the version or double-checking the type annotations would help. It could be a compojure-api problem too.

Reproduce the Swagger UI file-upload failure and inspect the Swagger UI integration and compojure-api type annotations mentioned in the issue. Check whether the problem is the dependency version or the annotations, then verify that attachment uploads work as expected.

Written by the indexing model from the issue text.