derive a missing client digest from the secret that exists

A client with a secret in the store or in a leftover file but no digest gets the digest of that secret instead of stopping the unit. The password reaches authelia's prompt through a pty, not argv. A lost mint race takes the winner's secret. Also name the mint, not the publisher, in the remaining rust docs.

swarm-secret-client/src/review_classifier.rs

@@ -60,7 +60,7 @@ pub fn forge_token_path() -> Result<String, Error> {
 }
 
 /// The path holding the queue client secret of the classifier's OIDC client
-/// `client_id`, where `swarm-secret-publisher.nix` puts every swarm service's.
+/// `client_id`, where authelia's mint puts every swarm service's.
 ///
 /// # Errors
 /// [`Error::PathSegment`] when `client_id` is not a single path segment.