slice 1+2: header social URLs, drop TwitterX/Press Kit, wrap About/Team/PressKit, add /newsletter + /rss

- Header.tsx: bare linkedin/instagram/facebook URLs → /broadcastbeat handles; remove TwitterXIcon from social bar + import (Footer retains TwitterXIcon per "DO NOT OVERRIDE" marker)
- AboutDropdown.tsx: drop "Press kit" item (the page itself stays at /about/press-kit, just delisted from menu)
- SystemStatusBar.tsx: remove "Index online" pulse-dot and "N wire sources" span (keep articles count + events count + build version)
- /about, /about/team, /about/press-kit: wrap in Header+Footer (previously rendered bare <main>)
- /newsletter/page.tsx (new): redirect to /newsletter/archive — Header was 404'ing on /newsletter
- /rss/route.ts (new): dynamic RSS feed reading from legacy-source news section; replaces 404 at /rss

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/app/about/page.tsx

@@ -1,3 +1,6 @@
+import Header from "@/components/Header";
+import Footer from "@/components/Footer";
+
 export const metadata = {
   title: "About BroadcastBeat",
   description: "BroadcastBeat is an independent industry publication covering broadcast, production, and post-production technology.",
@@ -5,29 +8,33 @@ export const metadata = {
 
 export default function AboutPage() {
   return (
-    <main className="mx-auto max-w-3xl px-6 py-12 text-[#e5e7eb]">
-      <h1 className="font-serif text-4xl font-bold tracking-tight mb-6">About BroadcastBeat</h1>
-      <div className="space-y-5 text-[#d1d5db] text-[15px] leading-relaxed">
-        <p>
-          BroadcastBeat is an independent trade publication covering broadcast,
-          live production, streaming, and post-production technology. We
-          report on the equipment, services, and people that move the
-          professional video industry forward.
-        </p>
-        <p>
-          We cover the major industry shows — NAB, IBC, BroadcastAsia, MPTS,
-          and others — track product launches and acquisitions, and publish
-          interviews with the engineers, post supervisors, and executives
-          building the next generation of workflows.
-        </p>
-        <p>
-          Editorial decisions are made independently of advertising. We do
-          not accept payment for editorial coverage. Vendor-supplied press
-          releases routed through our distribution platform are rewritten
-          by our staff or AI assistants according to our editorial style
-          guide; the original submission is preserved on file.
-        </p>
-      </div>
-    </main>
+    <div className="min-h-screen bg-background">
+      <Header />
+      <main className="mx-auto max-w-3xl px-6 py-12 text-[#e5e7eb]">
+        <h1 className="font-serif text-4xl font-bold tracking-tight mb-6">About BroadcastBeat</h1>
+        <div className="space-y-5 text-[#d1d5db] text-[15px] leading-relaxed">
+          <p>
+            BroadcastBeat is an independent trade publication covering broadcast,
+            live production, streaming, and post-production technology. We
+            report on the equipment, services, and people that move the
+            professional video industry forward.
+          </p>
+          <p>
+            We cover the major industry shows — NAB, IBC, BroadcastAsia, MPTS,
+            and others — track product launches and acquisitions, and publish
+            interviews with the engineers, post supervisors, and executives
+            building the next generation of workflows.
+          </p>
+          <p>
+            Editorial decisions are made independently of advertising. We do
+            not accept payment for editorial coverage. Vendor-supplied press
+            releases routed through our distribution platform are rewritten
+            by our staff or AI assistants according to our editorial style
+            guide; the original submission is preserved on file.
+          </p>
+        </div>
+      </main>
+      <Footer />
+    </div>
   );
 }