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/admin/accounting/orders/page.tsx

@@ -4,7 +4,7 @@ import Link from 'next/link';
 import { useAuth } from '@/contexts/AuthContext';
 import { useRouter, useSearchParams } from 'next/navigation';
 
-const SITES = ['broadcastbeat','avbeat','backlotbeat','broadcastengineering'];
+const SITES = ['avbeat','avbeat','backlotbeat','broadcastengineering'];
 const STATUSES = ['active','completed','cancelled'];
 const SCHEDULES = ['single','monthly','quarterly'];
 

src/app/admin/accounting/reports/page.tsx

@@ -6,7 +6,7 @@ import { useRouter } from 'next/navigation';
 
 function fmt(cents: number) { return '$' + (cents / 100).toLocaleString('en-US', { minimumFractionDigits: 2 }); }
 
-const SITES = ['broadcastbeat','avbeat','backlotbeat','broadcastengineering'];
+const SITES = ['avbeat','avbeat','backlotbeat','broadcastengineering'];
 
 export default function ReportsPage() {
   const { user, loading } = useAuth();