To cover: The commitment to making this site usable for everyone, including assistive-technology users.
To cover: The target conformance level (e.g. WCAG 2.1 AA) and how the site is built toward it.
To cover: Semantic structure, keyboard navigability, contrast, focus states, reduced-motion support.
To cover: Anything known to be imperfect and the plan for it.
To cover: How to report an accessibility barrier and how quickly you'll respond.