Merge seeded platform links on container upgrades

src/App.tsx

@@ -3,7 +3,6 @@ import { Link, NavLink, Routes, Route, useLocation, useNavigate, useParams } fro
 import AdminPage from './AdminPage'
 import QASection from './components/QASection'
 import ContactForm from './components/ContactForm'
-import { FacebookIcon, SpotifyIcon } from './icons'
 import type { SiteContent, ArchivedSeries } from './content'
 import { DEFAULTS } from './content'
 import './App.css'
@@ -496,9 +495,8 @@ function PlatformButtons({ content }: { content: SiteContent }) {
       <a href={amazonUrl} target="_blank" rel="noreferrer" className="platform-btn platform-btn-image">
         <img src="/images/listen-on-amazon-music.svg" alt="Listen on Amazon Music" className="platform-badge" />
       </a>
-      <a href={facebookUrl} target="_blank" rel="noreferrer" className="platform-btn facebook-btn">
-        <FacebookIcon />
-        Facebook
+      <a href={facebookUrl} target="_blank" rel="noreferrer" className="platform-btn platform-btn-image">
+        <img src="/images/follow-on-facebook.svg" alt="Follow on Facebook" className="platform-badge" />
       </a>
       {(content.customLinks ?? []).filter(l => l.placement === 'platforms').map(l => (
         <a