refactor: remove all offline download and caching functionality

app/settings/page.tsx

@@ -14,7 +14,6 @@ import { useStandaloneLastFm } from '@/hooks/use-standalone-lastfm';
 import { useSidebarShortcuts, SidebarShortcutType } from '@/hooks/use-sidebar-shortcuts';
 import { SidebarCustomization } from '@/app/components/SidebarCustomization';
 import { SettingsManagement } from '@/app/components/SettingsManagement';
-import EnhancedOfflineManager from '@/app/components/EnhancedOfflineManager';
 import { AutoTaggingSettings } from '@/app/components/AutoTaggingSettings';
 import { FaServer, FaUser, FaLock, FaCheck, FaTimes, FaLastfm, FaCog, FaTags } from 'react-icons/fa';
 import { Settings, ExternalLink, Tag } from 'lucide-react';
@@ -778,11 +777,6 @@ const SettingsPage = () => {
                   <SettingsManagement />
                 </div>
 
-                {/* Offline Library Management */}
-                <div className="break-inside-avoid mb-6">
-                  <EnhancedOfflineManager />
-                </div>
-
                 {/* Auto-Tagging Settings */}
                 <div className="break-inside-avoid mb-6">
                   <AutoTaggingSettings />