Runs a pre-ship design QA gate on a screenshot, URL, or PR HTML/CSS - checks states, WCAG 2.2 contrast, touch targets, breakpoints, and keyboard paths, then returns a pass/fail table and fix list. Trigger phrases - "QA this screen", "is this ready to ship", "check this PR for accessibility issues", "audit before launch". Skip for style critique - use design-review instead; this checks only verifiable gate criteria.
