diff --git a/src/ui/AppShell.tsx b/src/ui/AppShell.tsx
new file mode 100644
index 00000000..c5920e92
--- /dev/null
+++ b/src/ui/AppShell.tsx
@@ -0,0 +1,72 @@
+// src/ui/AppShell.tsx
+export default function AppShell() {
+  // Simple anchor links for now (no react-router-dom needed)
+  const nav = [
+    ['/#/dashboard', 'Dashboard'],
+    ['/#/ideas', 'Ideas'],
+    ['/#/library', 'Content Library'],
+    ['/#/uploads', 'Uploads'],
+    ['/#/presets', 'Presets'],
+    ['/#/schedule', 'Schedule & Autolist'],
+    ['/#/agent', 'AI Agent Training'],
+    ['/#/brands', 'Brands'],
+    ['/#/settings', 'Settings'],
+  ];
+
+  return (
+    <div className="min-h-screen" style={{ color: 'var(--text)' }}>
+      <div className="grid" style={{ gridTemplateColumns: '260px 1fr', minHeight: '100vh' }}>
+        {/* Sidebar */}
+        <aside
+          className="prism-card"
+          style={{ margin: '24px', padding: '20px', display: 'flex', flexDirection: 'column', justifyContent: 'space-between' }}
+        >
+          {/* Logo + Nav */}
+          <div>
+            <div className="flex items-center gap-2 mb-6">
+              <img src="/brand/prism-mark.svg" alt="Prism" style={{ height: '28px' }} />
+              <span className="prism-text" style={{ fontSize: '20px', fontWeight: 600 }}>Prism</span>
+            </div>
+
+            <nav style={{ display: 'flex', flexDirection: 'column', gap: '8px', fontSize: '14px' }}>
+              {nav.map(([href, label]) => (
+                <a
+                  key={href}
+                  href={href}
+                  className="opacity-80 hover:opacity-100"
+                  style={{ textDecoration: 'none', color: 'inherit', padding: '.5rem .75rem', borderRadius: '999px' }}
+                >
+                  {label}
+                </a>
+              ))}
+            </nav>
+          </div>
+
+          <div style={{ fontSize: '12px', opacity: 0.6, marginTop: '20px' }}>© 2025 Prism</div>
+        </aside>
+
+        {/* Main */}
+        <main style={{ margin: '24px' }}>
+          <header
+            className="prism-card"
+            style={{ padding: '16px', marginBottom: '24px', display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}
+          >
+            <h1 style={{ fontWeight: 600 }}>Vibe Studio</h1>
+            <div style={{ display: 'flex', gap: '8px' }}>
+              <input className="prism-input" placeholder="Quick idea URL, text, or upload…" style={{ width: '360px' }} />
+              <button className="prism-btn">Create</button>
+            </div>
+          </header>
+
+          <section className="prism-card" style={{ padding: '24px' }}>
+            <div style={{ opacity: 0.85 }}>
+              <strong>Connected!</strong> This is your Prism shell. 
+              Replace this area with your actual pages or SDK components. 
+              Links on the left are dummy anchors for now.
+            </div>
+          </section>
+        </main>
+      </div>
+    </div>
+  )
+}