//! Ports (interfaces)
//!
//! Traits defining the boundaries of the domain. Infrastructure adapters
//! implement these traits; the domain only depends on them.
//!
//! ## Ports
//!
//! - [`memo_encryptor`] - ChaCha20Poly1305 encryption contract
//! - [`key_deriver`] - SHA-256 key derivation contract
pub use KeyDeriver;
pub use MemoEncryptor;