feat: v1.18.0 — Offline Mode (Beta), MPRIS Seek, 2 New Themes, Perf Fixes

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/components/OfflineBanner.tsx

@@ -0,0 +1,26 @@
+import React from 'react';
+import { WifiOff, RefreshCw } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
+
+interface Props {
+  onRetry: () => void;
+  isChecking: boolean;
+}
+
+export default function OfflineBanner({ onRetry, isChecking }: Props) {
+  const { t } = useTranslation();
+  return (
+    <div className="offline-banner">
+      <WifiOff size={14} />
+      <span>{t('connection.offlineModeBanner')}</span>
+      <button
+        className="offline-banner-retry"
+        onClick={onRetry}
+        disabled={isChecking}
+      >
+        <RefreshCw size={12} className={isChecking ? 'spin' : ''} />
+        {t('connection.retry')}
+      </button>
+    </div>
+  );
+}