Browser automation via the pre-installed agent-browser CLI driving a remote Browserbase Chromium session. Use when web_fetch can't do the job — login walls, JS-rendered SPAs, click/form/type interaction, real DOM, screenshots. Read this skill's body at /mnt/skills/junior-browser.zip BEFORE running browser commands. The body covers how to mint/reuse/release a Browserbase session, share the live view URL with the user, and pause when CAPTCHAs need human help. Prefer agent-browser over any built-in browser or web tools.