//! SQL-based storage backends using the `sqlx` crate.
//!
//! Supported databases:
//! - **PostgreSQL** (via feature `sqlx-postgres`): session, execution, and pgvector embedding stores
//! - **MySQL** (via feature `sqlx-mysql`): session and execution stores
//! - **SQLite** (via feature `sqlx-sqlite`): session and execution stores
//!
//! Each backend is selected at compile time via Cargo feature flags and
//! uses runtime SQL queries for cross-database compatibility.
pub use SqlSessionStore;
pub use SqlEmbeddingStore;
pub use SqlExecutionStore;