PWA optimization: vite-plugin-pwa, split misc.json, IndexedDB cache layer

index.html

@@ -7,7 +7,6 @@
   <meta name="description" content="Ponomar — Orthodox Church calendar and liturgical information" />
   <link rel="icon" href="/icons/icon-192.png" />
   <link rel="apple-touch-icon" href="/icons/icon-192.png" />
-  <link rel="manifest" href="/manifest.json" />
   <link rel="preload" href="/fonts/Ponomar-Regular.woff" as="font" type="font/woff" crossorigin />
   <title>Ponomar</title>
 </head>