Use for Graphite CLI stacked PRs workflow in repos with .git/.graphite_repo_config.
Triggers: graphite, stacked PRs, dependent PRs, chained PRs, PR stack, gt create,
gt modify, gt submit, gt sync, gt restack, gt log, gt checkout, gt up, gt down,
rebase my stack, fix stack conflicts, split PR, land my stack, merge stack,
sync with main/trunk, reorder branches, fold commits, amend stack, move branch
to different parent, stack out of date, update my stack. For repos WITHOUT
.git/.graphite_repo_config, use standard git commands instead.