When autologin is rejected the panel offers '휴대폰으로 로그인 (QR)'. It opens a 5-minute LAN relay to the launcher UI guarded by a one-time token (first phone to open the QR URL is the only client allowed) and shows the URL as a QR code. The relay closes as soon as a new session appears, on cancel, on expiry, and on unload. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>