Keyless CLI reference

Subcommand	Purpose
confium keyless version	Product + component crate versions
confium keyless sign	Keyless sign (placeholder)
confium keyless verify	Verify a keyless bundle (placeholder)
confium keyless configure	Manage issuer/subject allowlists (placeholder)

Crates: confium-oidc. GitHub Action: Product docs: https://www.confium.org/keyless/.