Use 127.0.0.1 instead of localhost when constructing CDP URL from port
number, since Chrome only binds to IPv4. This prevents connection
failures on systems like Ubuntu 24.04 where localhost resolves to ::1.
Co-authored-by: hyunjinee <leehj0110@kakao.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>