@waifu The README should say; `This project is licensed under the GNU Affero General Public License v3.0 (AGPL-3.0-or-later).' (the comment at the end barely saves it, but there's no reason why any part should be ambiguous).

Many .py files are missing a license header (without a license header, it is extremely easy for the software and the license to get separated).

A contributing file is optional - advise how commits should be submitted is a good idea, but is not required.

For any nontrivial changes from someone else with copyright not assigned to the project or you, the copyright header of each nontrivially changed file would need to be adjusted to list the additional copyright holder if they haven't already added such (so copyright holders are not omitted) and git will store the rest of the information.