Read the AI Assistant channel as its own row

GA4 files ChatGPT, Gemini, Copilot and Grok referrals under AI Assistant already — but not AI Overviews or AI Mode, which stay inside Organic Search. Judge the row on conversion rate, not sessions: it is the one place on your own property where “the assistant pre-qualified them” is checkable, and it counts the clicks only, never the reads.