//! Pure-function diff calculators for content.
//!
//! Each calculator hashes the disk-side and database-side representations
//! and emits a structured diff (`added`/`modified`/`removed`/`unchanged`)
//! without mutating either side.
//!
//! Copyright (c) systemprompt.io — Business Source License 1.1.
//! See <https://systemprompt.io> for licensing details.
pub use ContentDiffCalculator;
use ;