fixed a bug & replicated all changes to docker version

desktop/src/scripts/anime/player.js

@@ -239,8 +239,9 @@ async function loadExtensions() {
         const select = document.getElementById('extension-select');
         let extensions = data.extensions || [];
 
-        // Añadimos local manualmente
-        if (!extensions.includes('local')) extensions.push('local');
+        if (extName === 'local' && !extensions.includes('local')) {
+            extensions.push('local');
+        }
 
         select.innerHTML = '';
         extensions.forEach(ext => {
@@ -251,8 +252,8 @@ async function loadExtensions() {
 
         if (extName && extensions.includes(extName)) {
             select.value = extName;
-        } else {
-            select.value = 'local'; // Default a local
+        } else if (extensions.length > 0) {
+            select.value = extensions[0];
         }
 
         currentExtension = select.value;