New connect_service_account_token() and has_service_account_token()
functions allow looking up credentials from Connect-managed service accounts
(or service principals).
Error messages for misuse of connect_viewer_token() outside Connect have
improved.
connectcreds is is a toolkit for making use of credentials
mediated by Posit Connect. It handles the details of communicating with
Connect's API correctly, OAuth token caching, and refresh behaviour.