Makes a UI pull request autonomously verifiable. `author` writes a Markdown intent spec — the happy path plus out-of-bounds cases from a PR-scoped brainstorm — into the PR description as a collapsed, machine-findable block (delegated to by `create-pr` on UI diffs). `run` resolves the PR's live preview URL via the GitHub deployments API and runs the spec there through `aw-tester`, which may adapt the route but checks every expected outcome with evidence, and reports a verdict plus full-page screenshots (`--no-screenshots` opts out). It then tries to break the same change — hostile input, double submits, failed requests, small viewports — and documents every probe with screenshots, never changing the verdict (`--no-adversarial` opts out). `verify` is author-if-needed, then run. `setup` delegates to `aw-setup --target preview`. A LoreKit loop feeds runner friction into the next spec. Web only. Triggers on "write a preview spec", "verify this PR's preview", "try to break this PR's preview", "/ui-verify".