Prints the current per-pair delay/width/reference/IO settings and the
trigger/burst configuration for DDG1/DDG2, following the PrettyTable
status pattern already used by the Galil controllers. Exposed via
USER_ACCESS as dev.ddg1.show_all() / dev.ddg2.show_all().
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>