GitHub Copilot app now supports stacked sessions and pull requests

The blog post documents a concrete workflow improvement in the GitHub Copilot app: the ability to chain multiple AI-guided development sessions together so that each session's changes build logically on the previous one. The author's use case illustrates why this matters in practice. She had a decade-old personal project (last major updates in 2014) that had become increasingly difficult to maintain—it used React 15, Less CSS preprocessing, and an old version of react-bootstrap. Attempting the modernization as a single large task would have taken weeks or required giving up entirely (which she had done before). By breaking the work into stacked sessions, she was able to handle compatibility issues separately, avoid scope creep (a constant temptation when AI is doing the coding), and ship multiple focused pull requests instead of one unwieldy mega-PR.

The feature appears to address a real pain point in developer workflows: the gap between "I want to refactor this large codebase" and "I want to review and merge changes safely." Stacking allows developers to accept AI's help on large tasks without sacrificing code review discipline or creating dangerously large changesets. The author's excitement about the feature suggests it resonates with developers who use AI coding tools regularly and want to maintain good engineering practices while benefiting from AI assistance.