GitHub made browser tools for Copilot in VS Code generally available last week, and the obvious reaction is: nice, now the agent can click around a web app.

That is useful.

It is also the least interesting part.

The more important thing is that agents can now interact with the frontend in the same messy place where users do: a real browser, with real navigation, real clicks, real console errors, real screenshots, and real UI state.

That changes the shape of AI-assisted frontend work.