Function collate_refs_verified_in 

pub fn collate_refs_verified_in(
    meshes: &[InstanceMeshRef<'_>],
    min_group: usize,
    rtc: [f64; 3],
    verify_basis: Option<&Matrix4<f64>>,
) -> Collated

Compatibility entry point preserving the original verify-only emission contract. Use collate_refs_in_basis for baked-frame output.