chore: purge all rocket.new references from source

- Replace img.rocket.new mock URLs in authors/[slug] + FeaturedBento
  with /assets/images/article-placeholder.svg (live DB data drives
  these pages now; the static maps are fallback only).
- Replace broadcastb5322.builtwithrocket.new with broadcastbeat.com
  in admin API routes, news detail, forum layout, and the 4 Supabase
  edge functions that build outbound email links.
- Swap rocket-hosted JSON-LD logo URL in root layout for the local
  /assets/images/logo.png we already ship.
- Drop img.rocket.new from the Next.js image-hosts allowlist;
  add supabase.onsethost.com so storage proxy URLs can render.

The DB has had zero rocket.new image refs for weeks; this finishes
the job in the codebase so no page on broadcastbeat.com can render
a rocket-hosted asset anymore.

src/app/api/admin/articles/route.ts

@@ -81,7 +81,7 @@ export async function POST(req: NextRequest) {
   // Trigger article publish notification if published immediately
   if (status === 'published' && data) {
     try {
-      const siteUrl = process.env.NEXT_PUBLIC_SITE_URL || 'https://broadcastb5322.builtwithrocket.new';
+      const siteUrl = process.env.NEXT_PUBLIC_SITE_URL || 'https://broadcastbeat.com';
       fetch(`${siteUrl}/api/newsletter/notify-article`, {
         method: 'POST',
         headers: {
@@ -152,7 +152,7 @@ export async function PATCH(req: NextRequest) {
         .single();
 
       if (articleData) {
-        const siteUrl = process.env.NEXT_PUBLIC_SITE_URL || 'https://broadcastb5322.builtwithrocket.new';
+        const siteUrl = process.env.NEXT_PUBLIC_SITE_URL || 'https://broadcastbeat.com';
         // Fire-and-forget: call notify-article route internally
         fetch(`${siteUrl}/api/newsletter/notify-article`, {
           method: 'POST',

src/app/api/admin/company-coverage-reminder/route.ts

@@ -31,12 +31,12 @@ export async function POST(request: NextRequest) {
             <ul style="margin:0;padding-left:20px;color:#e5e5e5;font-size:14px;line-height:1.8;">${companyList}</ul>
             ${moreText}
           </div>
-          <a href="${process.env.NEXT_PUBLIC_SITE_URL || 'https://broadcastb5322.builtwithrocket.new'}/admin/company-tracker"
+          <a href="${process.env.NEXT_PUBLIC_SITE_URL || 'https://broadcastbeat.com'}/admin/company-tracker"
              style="display:inline-block;background:#3b82f6;color:#fff;text-decoration:none;padding:10px 20px;border-radius:6px;font-size:14px;font-weight:bold;">
             Review Story Queue →
           </a>
           <p style="color:#444;font-size:12px;margin-top:24px;">
-            Manage settings at <a href="${process.env.NEXT_PUBLIC_SITE_URL || 'https://broadcastb5322.builtwithrocket.new'}/admin/company-tracker" style="color:#3b82f6;">Company Tracker</a>
+            Manage settings at <a href="${process.env.NEXT_PUBLIC_SITE_URL || 'https://broadcastbeat.com'}/admin/company-tracker" style="color:#3b82f6;">Company Tracker</a>
           </p>
         </div>
       `,

src/app/api/admin/suspensions/route.ts

@@ -2,7 +2,7 @@ import { NextRequest, NextResponse } from 'next/server';
 import { createClient } from '@/lib/supabase/server';
 import nodemailer from 'nodemailer';
 
-const siteUrl = process.env.NEXT_PUBLIC_SITE_URL || 'https://broadcastb5322.builtwithrocket.new';
+const siteUrl = process.env.NEXT_PUBLIC_SITE_URL || 'https://broadcastbeat.com';
 
 async function sendSuspensionEmail(
   email: string,

src/app/api/admin/users/route.ts

@@ -107,7 +107,7 @@ export async function POST(req: NextRequest) {
   // Send email via Supabase Edge Function
   const supabaseUrl = process.env.NEXT_PUBLIC_SUPABASE_URL;
   const supabaseAnonKey = process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY;
-  const siteUrl = process.env.NEXT_PUBLIC_SITE_URL || 'https://broadcastb5322.builtwithrocket.new';
+  const siteUrl = process.env.NEXT_PUBLIC_SITE_URL || 'https://broadcastbeat.com';
 
   try {
     const emailRes = await fetch(`${supabaseUrl}/functions/v1/send-contributor-invite`, {