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This is Part 17 of the “Frontend Testing, Done Right” series. Browse the full series · Glossary Tests have no power while they’re “something you run locally, sometimes.” They protect a team only once they become a checkpoint that runs on every PR. This article builds that checkpoint with GitHub Actions — a merge gate where unit tests, E2E, and accessibility checks must pass before code can merge — from a single workflow file. Never touched CI? Fine. Three minutes of vocabulary first. ...