Add a combined stylesheet entry for package consumers

docs/releasing.md

@@ -27,6 +27,16 @@ Changesets should currently be used for:
 - `@ai-ui/ui`
 - `@ai-ui/tokens`
 
+Package consumers should now prefer:
+
+- `@ai-ui/ui` for component imports
+- `@ai-ui/ui/styles.css` for the combined token + skin stylesheet
+
+The lower-level entries remain available when needed:
+
+- `@ai-ui/tokens/styles.css`
+- `@ai-ui/ui/skins.css`
+
 Changes to the docs app alone usually do not need a changeset.
 
 ## When to create a changeset