//! Detection pipeline: tile diffing, perceptual hashing, ROI mapping, and
//! temporal volatility / busy-region detection.
//!
//! All steps operate on a cheap [`WorkingFrame`] (the full frame downsampled to a
//! tile grid). Downsampling is the only per-frame full-buffer pass; everything
//! downstream is `O(tiles)`.
pub use ;
pub use ;
pub use ;
pub use ;