What coffre's other packages share: access rules, envelope encryption, the
key-encryption keys (a local key, or AWS KMS), the audit chain, identity and
sign-in, and Vault, the contract between the server and the vault.
A deployment does not import it. @coffre/server and @coffre/vault
re-export what a deployment needs from it.
Part of coffre, a secrets manager you
deploy as a small project of your own. Its eight @coffre/* packages are
released together, at one version. MIT licensed.