Stacked sessions and pull requests in the GitHub Copilot app

GitHub introduces stacked sessions in the Copilot app, allowing multiple tasks in the same repository to build on one another and connect with pull requests. The accompanying story uses a long-lived personal dashboard project as an example: it still depended on React 15, Less, and an old react-bootstrap version. The author says untangling that legacy code before AI would have taken weeks, illustrating the intended workflow for coordinating incremental modernization tasks with Copilot. The supplied abstract is truncated, so additional implementation details are not independently confirmed.