Add default icons to repo, wire in changing them when stream is live and album art is found

config.php

@@ -222,6 +222,8 @@ if (!defined('RADIO_CONFIG_LOADED')) {
             'autoplay'   => radio_env_bool('PLAYER_AUTOPLAY', false),
             // Show OS/lock-screen media controls via the MediaSession API.
             'mediasession' => radio_env_bool('MEDIASESSION', true),
+            // Swap the OpenGraph image + favicon to the current album art.
+            'dynamic_meta' => radio_env_bool('DYNAMIC_META', true),
         ],
 
         // ---- Listeners / extras ---------------------------------------
@@ -291,6 +293,7 @@ function radio_client_config() {
         'autoplay'      => cfg('player.autoplay'),
         'dynamicBg'     => cfg('theme.dynamic_bg'),
         'mediaSession'  => cfg('player.mediasession'),
+        'dynamicMeta'   => cfg('player.dynamic_meta'),
         'siteName'      => cfg('site.name'),
         'tagline'       => cfg('site.tagline'),
         'offlineStreamUrl' => cfg('offline.stream_url'),