Brain Atlas Data Structures for the 'ggsegverse' Ecosystem // Provides the 'ggseg_atlas' S3 class used across the 'ggsegverse' ecosystem for 2D and 3D brain visualisation. Ships four bundled atlases ('Desikan-Killiany', 'FreeSurfer' 'aseg', 'TRACULA', 'SUIT') and functions for querying, subsetting, renaming, and enriching atlas objects. Also includes readers for 'FreeSurfer' statistics files.