* docs: add device pairing section to Control UI docs Explains that new browser connections require one-time pairing approval, what error message users will see, and how to approve devices using the CLI. This was a gap in the documentation that caused confusion for users connecting via Tailscale Serve. * docs: clarify Control UI pairing error * docs: clarify device revoke flags --------- Co-authored-by: Lucifer (via OpenClaw) <[email protected]> Co-authored-by: Sebastian <[email protected]>