update homepage tagline to 'News & Intelligence for Broadcast, Post-Production & Streaming Technology'

src/app/about/page.tsx

@@ -5,7 +5,7 @@ import Header from "@/components/Header";
 import Footer from "@/components/Footer";
 
 export const metadata: Metadata = {
-  title: "About BroadcastBeat — The Digital Platform for Broadcast Engineering",
+  title: "About BroadcastBeat — The News & Intelligence for Broadcast, Post-Production & Streaming Technology",
   description:
     "BroadcastBeat is the leading digital platform for broadcast engineering professionals. Learn about our editorial mission, team, and commitment to the broadcast industry.",
   alternates: { canonical: "/about" },

src/app/api/newsletter/subscribers/route.ts

@@ -141,7 +141,7 @@ export async function POST(req: NextRequest) {
       <!-- Header -->
       <div style="background:#111;border-bottom:2px solid #3b82f6;padding:24px 32px;">
         <h1 style="color:#3b82f6;font-size:22px;margin:0;font-weight:bold;">BroadcastBeat</h1>
-        <p style="color:#555;font-size:12px;margin:4px 0 0;">Digital Platform for Broadcast Engineering</p>
+        <p style="color:#555;font-size:12px;margin:4px 0 0;">News & Intelligence for Broadcast, Post-Production & Streaming Technology</p>
       </div>
       <!-- Body -->
       <div style="padding:32px;">

src/components/Header.tsx

@@ -214,7 +214,7 @@ export default function Header() {
       <div className="bg-[#1a2535] border-b border-[#2a3a50]">
         <div className="max-w-container mx-auto px-4 h-8 flex items-center justify-between">
           <p className="text-[#999999] text-xs font-body hidden sm:block">
-            Digital Platform for Broadcast Engineering
+            News & Intelligence for Broadcast, Post-Production & Streaming Technology
           </p>
           <div className="flex items-center gap-3 ml-auto">
             <a href="https://linkedin.com" target="_blank" rel="noopener noreferrer" aria-label="BroadcastBeat on LinkedIn"