Diagnostics API

The stable diagnostics API is mlx_lattice.backend_info(). It reports compiled extension metadata, version information, and backend capability strings. Use it to verify that the native module imported successfully or to attach environment details to bug reports.

backend_info() does not select routes. Public operations still dispatch from the active MLX device, input dtype, relation metadata, shape predicates, and available backend kernels.

The underscored mlx_lattice._native module is an implementation module. Do not import it from application code.