diff --git a/plugins/voyage/playground/voyage-playground.html b/plugins/voyage/playground/voyage-playground.html
index 5e80bff..6ce0e40 100644
--- a/plugins/voyage/playground/voyage-playground.html
+++ b/plugins/voyage/playground/voyage-playground.html
@@ -826,6 +826,30 @@ playground first-run shows a complete round-trip-able artifact.
           '</div>';
       }
 
+      // ---- v4.3 Step 9 — renderPageShell --------------------------------
+      // Universal page-header for dashboard + artifact-detail flater.
+      // Returns an HTML string wrapping body content with DS Tier 3
+      // page__eyebrow / page__title / page__lede / page__meta typography.
+      function renderPageShell(opts, bodyHtml) {
+        var o = opts || {};
+        var parts = ['<section class="page-shell">'];
+        if (o.eyebrow) {
+          parts.push('<div class="page__eyebrow">' + escapeHtml(o.eyebrow) + '</div>');
+        }
+        if (o.title) {
+          parts.push('<h1 class="page__title">' + escapeHtml(o.title) + '</h1>');
+        }
+        if (o.lede) {
+          parts.push('<p class="page__lede">' + escapeHtml(o.lede) + '</p>');
+        }
+        if (o.meta) {
+          parts.push('<div class="page__meta">' + escapeHtml(o.meta) + '</div>');
+        }
+        parts.push('<div class="page-shell__body">' + (bodyHtml || '') + '</div>');
+        parts.push('</section>');
+        return parts.join('');
+      }
+
       // ---- DOM wiring ----------------------------------------------------
       function $(id) { return document.getElementById(id); }