Run AUTHENTICATED agent-browser automation against one or more sites by reusing your existing local browser login — stream those sites' cookies straight out of the local browser store (one Touch ID tap via the `cookiesync` CLI and its resident daemon) into a fresh agent-browser session, then do the task. Use when a browser task needs you to be logged in (dashboards, gated pages, account settings, an app that calls a separate API host, "do X on <site> as me", "use my session/cookies") and the user is already signed in via their desktop browser. macOS; authorized local use on the user's own machine.