Investigate the usage of github secrets as archive logins

I think we can use those to store test logins, but it needs to be investigated.

Also, it would be better if it was a login for a test account on the other side, giving only some limited access for testing purposes.

The issue names no files, tests, or entry points. Investigate whether GitHub secrets can hold test logins and whether a separate test account with limited access is available; document the viable approach and its security implications.

Written by the indexing model from the issue text.