Announcement / news / notification bar — a thin, optionally dismissible alert strip with title, description, and optional CTA. Layouts from edge-to-edge system banner to a SUSE-style two-tone news strip (row-with-divider) to a compact toast. Use this for one-line site-wide notices, not a full marketing promo.

• src/components/registry/components/feedback/alert-banner.tsx→components/registry/components/feedback/alert-banner.tsx
• src/components/registry/components/feedback/alert-banner.recipe.ts→src/recipes/alert-banner.recipe.ts