//! Fault Detection & Isolation (FDI)
//!
//! This module provides three complementary FDI techniques:
//!
//! - [`parity_space`]: Parity-space residual generation using an open-loop
//! model predictor. Suitable for discrete-time systems with known model.
//!
//! - [`observer_fdi`]: Luenberger observer-based residual generator with
//! per-channel isolation. Enables identification of which output is faulty.
//!
//! - [`hypothesis_test`]: Statistical decision logic — χ² test and SPRT —
//! applied to FDI residuals for principled fault declaration.
pub use ;
pub use ;
pub use ;