alt Hacker NewsThe tooling for that already exists, since a PR can consist of multiple Git commits and you can look at them separately in the UI. I don't know whether agents are any good at navigating that, but if not, they won't do any better with stacked PRs. Stacked PRs do create some new affordances for the review process, but that seems different from what you're looking for.
Looking at multiple commits is not a good workflow:
* It amounts to doing N code reviews at once rather than a few small reviews which can be done individually
* Github doesn't have any good UI to move between commits or to look at multiple at once. I have to find them, open them in separate tabs, etc.
* Github's overall UX for reviewing changes, quickly seeing a list of all comments, etc. is just awful. Gerrit is miles ahead. Microsoft's internal tooling was better 16 years ago.
* The more commits you have to read through at once the harder it is to keep track of the state of things.