Traffic — Who Arrives, and From Where

The analytics skill (Mixpanel) measures what users do inside the app. This skill measures acquisition: who lands on the site, from which channel — the top of every funnel. Google Analytics 4 is the pick: free, the acquisition standard, and the lens Google Ads and Search Console plug into later.

GA4's weakness is its interface — a maze of clicks that moves every year. So the rule this skill is built on: the GA website is never opened. After one browser sign-in, the property, the data stream, and the measurement ID are all created and read through the Admin API — no UI navigation, ever.

Step 0 — Scope check

Read codehance.md first. This skill covers the acquisition half of component 21 (Analytics) — it annotates that row rather than owning a new one: