//! Configuration types for I/O specifications.
//!
//! This module provides:
//! - `InputSpec`: Specification for a single input source
//! - `OutputSpec`: Specification for a single output target
//! - `FileExistsPolicy`: Policy for handling existing output files
//! - `PipelineConfig`: Configuration for complete I/O pipelines
pub use ;
pub use ;
// Async versions
pub use ;