homepage: All featured → goes to dedicated /news/featured page

Was linking to /news?category=Featured which silently fell back to the
unfiltered /news listing because "Featured" isn't in CATEGORIES and the
filter is tag-based, not category-column-based.

Adds getLegacyFeaturedArticles() that mirrors FeaturedBento's query
(category ILIKE 'featured', featured-flag-first sort) at limit 200, and
a thin /news/featured route that reuses NewsPageClient.

src/app/news/featured/page.tsx

@@ -0,0 +1,22 @@
+import type { Metadata } from "next";
+import { Suspense } from "react";
+import NewsPageClient from "../NewsPageClient";
+import { getLegacyFeaturedArticles } from "@/lib/articles/legacy-source";
+
+export const revalidate = 1800;
+
+export const metadata: Metadata = {
+  title: "Featured Stories — Broadcast Beat",
+  description:
+    "Editorial picks from the Broadcast Beat staff — the most important industry stories, hand-selected from across broadcast engineering, IP/cloud workflows, streaming, AI, and live production.",
+  alternates: { canonical: "/news/featured" },
+};
+
+export default async function FeaturedNewsPage() {
+  const articles = await getLegacyFeaturedArticles(200);
+  return (
+    <Suspense fallback={null}>
+      <NewsPageClient articles={articles} />
+    </Suspense>
+  );
+}