pr-splitter

Split a large, messy, or hard-to-review pull request into smaller reviewable PRs (stacked or parallel) without losing any of the original work — snapshot the branch, extract changes non-interactively, verify each PR independently, and track drift as review feedback lands. Use when a PR is too big to review, mixes refactors with behavior changes, or needs incremental delivery. Requires committed work on a branch —…