ext-v1.0.3

- **Contrast checks now run on styled buttons.** A styled `<a>` or `<button>` with its own opaque background was silently skipped by the contrast rule, so a "Get started" pill with charcoal text on a near-black background read as fine to the detector. Buttons with their own background and direct text now flow through the same contrast and palette checks as every other text element. Inline links inside paragraphs continue to skip, as before.