Optimise LinkedIn for Inbound Recruiter Visibility

Act as a LinkedIn recruiter visibility expert. I am passively job searching for [TARGET_ROLE] in [INDUSTRY] and want recruiters to find and contact me. I do not want my current employer to know. Show me the exact changes to make to my LinkedIn profile so that: recruiter searches surface my profile for the right keywords, my Open to Work setting is set correctly for recruiter-only visibility, my headline and About section attract inbound without alarming my current employer, and my activity signals professional ambition without obvious job-seeking behaviour.