Naver: 카페 URL에서 숫자 cafeId 추출
$npx -y skills add greekr4/viruagent-cli --skill va-naver-cafe-idInstalls into the current project.
Run `npx skills use "https://github.com/greekr4/viruagent-cli" --skill "greekr4/viruagent-cli/va-naver-cafe-id"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/greekr4/viruagent-cli" that are relevant to the current task. Run `npx skills add "https://github.com/greekr4/viruagent-cli"` and select the relevant skills, then follow their instructions.