v4.0.6: output.css CDN 캐시 무효화 및 nginx CSS 캐시 정책 수정

HTML은 갱신됐으나 구 output.css가 CDN에 남아 Tailwind 레이아웃이 깨지던 문제를 ?v= 쿼리와 CSS must-revalidate로 해결한다.

Co-authored-by: Cursor <cursoragent@cursor.com>

deckHistory.html

@@ -4,7 +4,7 @@
         <meta charset="UTF-8" />
         <meta name="viewport" content="width=device-width, initial-scale=1.0" />
         <script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-4516420168710424" crossorigin="anonymous"></script>
-        <link rel="stylesheet" href="./style/output.css" />
+        <link rel="stylesheet" href="./style/output.css?v=4.0.6" />
         <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700;800;900&family=Noto+Sans+KR:wght@400;700;900&display=swap" rel="stylesheet" />
         <title>내 덱 관리 - UNIARE</title>
     </head>