refactor(web): the pull request header's crumbs, title editor and base branch live in their own components (#22672)

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
b302290c17Julius Marminge committed on 10/21/2026, 8:28:50 AM· committed by GitHubparent09bd654
4 files changedLine totals unavailable