//! Export flag configuration for `config.json → exports`.
use ;
/// Export flags controlling which outputs are written to disk
/// (`config.json → exports`).
///
/// Only the active fields below are accepted. Legacy keys (`training`, `cuts`,
/// `vertices`, `simulation`, `forward_detail`, `backward_detail`,
/// `compression`) must be removed from existing `config.json` files before
/// loading — they are now rejected as unknown fields.