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/recipes-view.js

@@ -9,7 +9,7 @@ let rcQuery = '', rcPage = 1;
 
 async function viewRecipes(args = []) {
   const v = $('#view');
-  v.innerHTML = '<div class="wrap"><h1>Recipes</h1><p class="empty">Loading…</p></div>';
+  v.innerHTML = '<div class="wrap"><h1>Recipes</h1><p class="empty loading" role="status">Loading…</p></div>';
   try {
     if (args[0] === 'r' && args[1]) return await rcOne(decodeURIComponent(args[1]));
     if (args[0] === 'pantry') return await viewPantry(args[1]);