Designer's eye QA: finds visual inconsistency, spacing issues, hierarchy problems, AI slop patterns, and slow interactions — then fixes them. (gstack)
Install
npx skills add garrytan/gstack --skill design-reviewnpx skills add garrytan/gstack --skill design-review -a claude-code -gnpx skills add garrytan/gstack --skill design-review -a codex -ggemini skills install https://github.com/garrytan/gstack.git --path design-reviewgh skill install garrytan/gstack design-reviewgit clone --depth 1 https://github.com/garrytan/gstack /tmp/garrytan__gstack
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/garrytan__gstack/design-review ~/.claude/skills/design-review # Claude Code
cp -R /tmp/garrytan__gstack/design-review ~/.agents/skills/design-review # Codex, Cursor, Gemini CLI, Copilot, OpenCode