//! # petekIO
//!
//! The subsurface **data ingestion + structure layer**: surfaces, wells,
//! points, and polygons, with loading, interpolation, filters, and statistics
//! built in. It is the input-data model that subsurface apps consume so they do
//! zero parsing/interpolation themselves.
//!
//! See `SPEC.md` (design constitution + architecture) and `API.md` (the locked
//! public API contract) at the repo root.
//!
//! ## Layered, one-way dependencies
//!
//! ```text
//! foundation → io → core → analysis → manager → py
//! ```
//!
//! A layer imports only from below — never sideways, never up. The public types
//! are re-exported at the crate root; users reach for `petekio::Surface`, not
//! `petekio::core::Surface`.
pub
// Public types are re-exported at the crate root.
pub use ;
pub use ;
pub use ;