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/about/contact/page.tsx

@@ -52,8 +52,8 @@ export default function ContactPage() {
         <div className="lg:grid lg:grid-cols-[1fr,300px] lg:gap-10">
           <main>
             <header className="mb-8 border-b border-[#252525] pb-6">
-              <div className="text-[10px] font-mono uppercase tracking-[0.22em] text-[var(--color-text-info,#E67E22)] mb-2">
-                AV Beat · Where AV Meets IT
+              <div className="text-[10px] font-mono uppercase tracking-[0.22em] text-[var(--color-text-info,#60a5fa)] mb-2">
+                AV Beat
               </div>
               <h1 className="font-serif text-4xl md:text-5xl font-bold tracking-tight">Contact</h1>
               <p className="mt-3 text-[#9ca3af] text-base">