fix: 예정 배지 세로 중앙 정렬

- items-start → items-center로 변경

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/src/pages/pc/public/schedule/sections/YoutubeSection.jsx

@@ -14,7 +14,7 @@ function VideoInfo({ schedule, isShorts, isScheduled = false }) {
   return (
     <div className={`bg-gradient-to-br from-gray-100 to-gray-200/80 rounded-2xl p-6 ${isShorts ? 'flex-1' : ''}`}>
       {/* 제목 */}
-      <div className="flex items-start gap-3 mb-4">
+      <div className="flex items-center gap-3 mb-4">
         <h1 className={`font-bold text-gray-900 leading-relaxed ${isShorts || isScheduled ? 'text-lg' : 'text-xl'}`}>
           {decodeHtmlEntities(schedule.title)}
         </h1>