//! Queue file loading facade with read-only semantics.
//!
//! Responsibilities:
//! - Expose queue-file load helpers for plain reads, parse repair, and validation.
//! - Coordinate queue/done loading for read-only validation flows.
//! - Keep semantic repair writes in `queue::repair` so undo semantics are centralized.
//!
//! Not handled here:
//! - Queue file saving (see `queue::save`).
//! - ID generation or backup management.
//!
//! Invariants/assumptions:
//! - Missing queue files return default empty queues.
//! - Pure load/validate APIs never write to disk.
//! - Mutating repair APIs live outside this loader facade.
pub use ;