Verify a story's acceptance criteria against the ephemeral dev environment created by its pull request — locate the environment URL, build an explicit check list from the acceptance criteria, execute the checks through the browser or the API, and report pass/fail with evidence. Use after a PR's build succeeds and before marking it ready for human review — "test the dev env", "verify PROJ-1234 in dev", "does the preview work", "check the deployed changes". Do NOT use for local testing before a PR exists, or for diagnosing a failed build (use gh-actions-triage).
