Improve PageSpeed accessibility, SEO, and performance scores

Add alt attributes, width/height for CLS, aria-labels, meta description,
preconnect hints, LCP fetchpriority, and sound/stamp cache headers.

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

vue/src/components/util/Wip.vue

@@ -1,7 +1,7 @@
 <template>
     <div class="a4page-portrait bdr-1 flex flex-col relative overflow-scroll">
         <RouterLink to="/" class="bdr-2">
-            <img src="/img/memes/epic.jpeg" loading="lazy" />
+            <img src="/img/memes/epic.jpeg" alt="" loading="lazy" />
         </RouterLink>
         <h1>Click her, she will take you home</h1>
         <span style="height: 100px"></span>