//! FlowLog Optimizer Library
//! This crate provides two handlers:
//! * Reader handler: load / update base (EDB) relation cardinalities.
//! * Planner handler: given a stratum catalog collection, build `PlanTree`s per rule.
//! (Currently left‑to‑right only; future phases may add cost-based ordering.)
//!
//! All interfaces are intentionally lightweight to allow later extension.
pub
pub
pub use Optimizer;