feat: add security fixes, quality tools, and infrastructure improvements#13

jschulte merged 2 commits intomainjschulte/stackshift:mainfrom

claude/codebase-review-01LBVxLho4aFbMniXLniNnpHjschulte/stackshift:claude/codebase-review-01LBVxLho4aFbMniXLniNnpHCopy head branch name to clipboard