feat(content): add announcements and public news flows

apps/web/src/components/public-announcements.tsx

@@ -0,0 +1,39 @@
+import { listActiveAnnouncements, type PublicAnnouncement } from "@cms/db"
+import Link from "next/link"
+
+type PublicAnnouncementsProps = {
+  placement: "global_top" | "homepage"
+}
+
+function AnnouncementCard({ announcement }: { announcement: PublicAnnouncement }) {
+  return (
+    <article className="rounded-lg border border-blue-200 bg-blue-50 px-4 py-3 text-sm text-blue-900">
+      <p className="text-xs uppercase tracking-wide text-blue-700">{announcement.title}</p>
+      <p className="mt-1">{announcement.message}</p>
+      {announcement.ctaLabel && announcement.ctaHref ? (
+        <Link
+          href={announcement.ctaHref}
+          className="mt-2 inline-block font-medium underline underline-offset-2"
+        >
+          {announcement.ctaLabel}
+        </Link>
+      ) : null}
+    </article>
+  )
+}
+
+export async function PublicAnnouncements({ placement }: PublicAnnouncementsProps) {
+  const announcements = await listActiveAnnouncements(placement)
+
+  if (announcements.length === 0) {
+    return null
+  }
+
+  return (
+    <section className="mx-auto w-full max-w-6xl space-y-2 px-6 py-3">
+      {announcements.map((announcement) => (
+        <AnnouncementCard key={announcement.id} announcement={announcement} />
+      ))}
+    </section>
+  )
+}