feat(ui): premium refinement UX Luxe + Add Feed functionality

web/src/layouts/RootLayout.tsx

@@ -0,0 +1,19 @@
+import { useState } from 'react';
+import { Sidebar } from '../components/Sidebar';
+import { DashboardPage } from '../pages/DashboardPage';
+
+export function RootLayout() {
+    const [selectedFeedId, setSelectedFeedId] = useState<string | null>(null);
+
+    return (
+        <div className="flex h-screen bg-carbon overflow-hidden">
+            <Sidebar
+                onSelectFeed={setSelectedFeedId}
+                selectedFeedId={selectedFeedId}
+            />
+            <DashboardPage
+                selectedFeedId={selectedFeedId}
+            />
+        </div>
+    );
+}