A 4,000-line diff is a review nobody finishes. GitStack carves one branch into a review per layer, each small enough for humans and agents to review accurately.
GitStack is the source of truth; GitHub stays in lockstep. Issues and PRs sync in, reviews sync out, comments flow both ways. CI stays on GitHub Actions, and landing gates on the checks it reports.
GitStack is the source of truth, GitHub stays in lockstep
Write commits normally. Create reviews from commit ranges. Push the stack. Land approved reviews in order, all through the same gs commands.
Reviews above the one you edit rebase automatically, and approvals stick. Each is marked extended, revised, or rebased, so reviewers know whether their LGTM still counts before they look.
# reviewer on r2: "this isn’t constant-time."$ gs checkout r2$ vim auth/password.go$ gs amend -m "use crypto/subtle" --resolves C008 amended r2. r3 rebased.$ gs push r2 patchset 2 (revised, slice content changed) r3 patchset 2 (rebased, slice content unchanged)$ gs return# r3’s LGTM survives because only its base moved, not its content.
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