// One Gauge object (#933) — moved DOWN into the neutral `gam-problem`
// crate (#1521 contract inversion). The whole `Gauge` section type, its
// builders, and the `assemble_block_triangular_t` assembler now live in
// `gam_problem::gauge` so the `terms`/`basis` and `identifiability`
// layers stop reaching UP into `solver` for it. This module re-exports
// the neutral type so every existing `crate::gauge::Gauge`
// (and `crate::gauge::assemble_block_triangular_t`) path keeps
// resolving unchanged.
//
// The one upward dependency — `Gauge::from_compiled_map`, which used to
// name `gam_identifiability::families::compiler::{CompiledMap,
// BlockOrder}` directly — was inverted: `from_compiled_map` is now
// generic over the neutral `gam_problem::gauge::CompiledBlockMap` trait,
// implemented for the real `CompiledMap` up in
// `gam_identifiability::families::compiler`.
pub use gam_problem::gauge::{CompiledBlockMap, Gauge, assemble_block_triangular_t};