I think it's telling how long it took GitHub to release a v1 of this feature. Folks have wanted this for a long time. Graphite came along and did it years ago (and I'm sure they pondered whether GitHub would do this).

And the v1 is also a bit... basic, and buggy. And I'm surprised there's not clear documentation for agents (given using GitHub stacked PRs CLI won't be in models' training data yet).

It does feel like GitHub hasn't been great at shipping new features for a few years now. Nonetheless, I'm glad to see this rolling out. Once polished, it's going to be exciting to use.