Polish: npm test runs every test file, two silent failures now log, Loading placeholders shimmer

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

public/podcast-view.js

@@ -34,7 +34,7 @@ const pdLeft = e => { const p = pdProg[pdId(e)]; return p && p.pos > 10 && p.dur
 
 async function viewPodcast(args = []) {
   const v = $('#view');
-  v.innerHTML = '<div class="wrap"><h1>Podcast</h1><p class="empty">Loading…</p></div>';
+  v.innerHTML = '<div class="wrap"><h1>Podcast</h1><p class="empty loading" role="status">Loading…</p></div>';
   try {
     if (args[0] === 'show' && args[1]) return await pdShow(args[1]);
     return await pdHome();