petekSim — the SIMULATION layer: dynamic/engineering appraisal (recoverable/forecast) + PVT + the appraisal facade over the petek subsurface-modelling stack, consolidated into one crate.
//! The `pvt` module — PVT properties. MVP scope is **FVF-as-input** ([`OilFvf`],
//! [`GasFvf`]); the `gas_fvf` (DAK Z) correlation is a later fast-follow that
//! produces the same [`GasFvf`] value type, keeping the downstream boundary
//! stable.
modfvf;pubusefvf::{GasFvf, OilFvf};