Instant in-site navigation: Speculation Rules, View Transitions, bfcache, 103 Early Hints. Use when "instant navigation", "prerender", "early hints", "back button reloads", or "second page is slow". First-load CWV → audit-performance.
Install
npx skills add kensaurus/skills --skill enhance-web-instant-navnpx skills add kensaurus/skills --skill enhance-web-instant-nav -a claude-code -gnpx skills add kensaurus/skills --skill enhance-web-instant-nav -a codex -ggemini skills install https://github.com/kensaurus/skills.git --path skills/enhance-web-instant-navgh skill install kensaurus/skills enhance-web-instant-navgit clone --depth 1 https://github.com/kensaurus/skills /tmp/kensaurus__skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/kensaurus__skills/skills/enhance-web-instant-nav ~/.claude/skills/enhance-web-instant-nav # Claude Code
cp -R /tmp/kensaurus__skills/skills/enhance-web-instant-nav ~/.agents/skills/enhance-web-instant-nav # Codex, Cursor, Gemini CLI, Copilot, OpenCode