//! Core trait abstractions for pluggable backends.
//!
//! These traits define the extension points of A3S Box. The runtime provides
//! default implementations, but consumers can swap in their own backends
//! (e.g., a different registry client, a Redis-backed cache, etc.).
pub use AuditSink;
pub use ;
pub use CredentialProvider;
pub use EventBus;
pub use ;
pub use ;
pub use ;