//! Constraint Propagation Engine for IPFRS TensorLogic
//!
//! Implements a full constraint propagation engine supporting:
//! - Arc consistency (AC3/AC4/AC6)
//! - Bounds propagation over integer intervals
//! - Interval arithmetic
//! - DFS backtracking with MRV (Minimum Remaining Values) heuristic
//! - AllDifferent, Linear, Sum, Abs, and relational constraints
// Re-export all types
pub use *;
pub use *;
pub use *;