av: clone broadcastbeat sources + AV Beat rebrand (Phase 1)

- Replaces the prior Rocket scaffold (saved on pre-bb-clone-rollback branch)
- Domain: broadcastbeat.com -> avbeat.com
- Brand: Broadcast Beat -> AV Beat
- Slug: broadcastbeat -> avbeat (package, identifiers)
- Schema fallback: bb -> av (env var name unchanged)
- Placeholder AV BEAT logo (gold->red gradient) at /assets/logos/av.svg
- All BB/RMP logo references repointed

Outstanding before public DNS swap:
  - Supabase av schema bootstrap (mirror of bb tables)
  - WordPress archive import (avbeat-com -> av.articles)
  - Coolify env vars
  - dev-avbeat.onsethost.com staging deploy + visual review

src/app/home-page/page.tsx

@@ -13,14 +13,14 @@ import SponsorLogoStrip from "@/components/SponsorLogoStrip";
 import CompanyMentionsHover from "@/components/CompanyMentionsHover";
 
 export const metadata: Metadata = {
-  title: 'AV Beat — Where AV Meets IT',
-  description: 'AV Beat covers the convergence of pro AV and IT — broadcast, live production, streaming, and post-production technology. Breaking news, deep-dive features, and industry spotlights from NAB to InfoComm and beyond.',
+  title: 'AV Beat — Broadcast Engineering News & Insights',
+  description: 'The digital platform for broadcast engineering professionals. Breaking news, deep-dive features, and industry spotlights from NAB to IBC and beyond.',
   alternates: {
     canonical: '/',
   },
   openGraph: {
-    title: 'AV Beat — Where AV Meets IT',
-    description: 'Breaking news and insights at the intersection of pro AV and IT.',
+    title: 'AV Beat — Broadcast News',
+    description: 'Breaking news and insights for broadcast engineering professionals.',
     url: '/',
     type: 'website',
     images: [
@@ -28,14 +28,14 @@ export const metadata: Metadata = {
         url: '/assets/images/og-image.png',
         width: 1200,
         height: 630,
-        alt: 'AV Beat — Where AV Meets IT',
+        alt: 'AV Beat — Broadcast Engineering News & Insights',
       },
     ],
   },
   twitter: {
     card: 'summary_large_image',
-    title: 'AV Beat — Where AV Meets IT',
-    description: 'Breaking news and insights at the intersection of pro AV and IT.',
+    title: 'AV Beat — Broadcast News',
+    description: 'Breaking news and insights for broadcast engineering professionals.',
     images: ['/assets/images/og-image.png'],
   },
 };
@@ -138,7 +138,7 @@ export default function HomePage() {
 
       {/* H1 Hero Heading */}
       <div className="sr-only">
-        <h1>AV Beat — Where AV Meets IT</h1>
+        <h1>AV Beat — Broadcast Engineering News & Insights</h1>
       </div>
 
       {/* Featured: cinematic hero + 4-up rail below (FeaturedBentoFromDb) */}