wp-abilities-api

Covers the WordPress Abilities API introduced in WP 6.9, including registering abilities and categories in PHP, exposing them via the `wp-abilities/v1` REST namespace, and consuming them in JavaScript with `@wordpress/abilities`. Also handles debugging when abilities don't appear on the client or in REST responses. Without this skill, you'd piece together hook timing, REST namespace details, and JS package wiring from scattered Trac tickets and changelogs — this consolidates the full registration-to-consumption path in one place.