feat(portal): land files platform and frontend workspace refresh

front/src/components/ui/PageToolbar.tsx

@@ -0,0 +1,25 @@
+import React, { ReactNode } from 'react';
+
+interface PageToolbarProps {
+  title: ReactNode;
+  actions?: ReactNode;
+}
+
+export function PageToolbar({ title, actions }: PageToolbarProps) {
+  return (
+    <div className="flex w-full items-center justify-between">
+      <div className="flex items-center gap-3">
+        {typeof title === 'string' ? (
+          <h2 className="text-lg font-semibold text-white tracking-tight">{title}</h2>
+        ) : (
+          title
+        )}
+      </div>
+      {actions && (
+        <div className="flex items-center gap-2">
+          {actions}
+        </div>
+      )}
+    </div>
+  );
+}