5.27.0
(feat): Add an opt-in prefer_explicit_auth configuration option. When enabled (and the API composes
OAuth client-credentials with basic auth via auth: any), auth credentials passed
explicitly to the client constructor take precedence over environment-variable
defaults when selecting the auth scheme — e.g. explicitly provided basic auth
credentials win over OAuth client ID/secret environment variables. Disabled by
default, so existing generated output and runtime behavior are unchanged.