//! # kvlar-core
//!
//! Core policy engine for Kvlar. Evaluates agent actions against YAML-based
//! security policies. Pure logic — no I/O, no async, fully deterministic.
//!
//! ## Architecture
//!
//! - **Policy**: A set of rules defining what agents can and cannot do
//! - **Action**: A description of something an agent wants to do (tool call, data access, etc.)
//! - **Decision**: The engine's verdict — Allow, Deny, or RequireApproval
//! - **Engine**: Evaluates actions against loaded policies
pub use Action;
pub use Decision;
pub use Engine;
pub use KvlarError;
pub use Policy;