clean

internal/api-harness/src/pages/ApiPlaceholder.jsx

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+const ApiPlaceholder = ({ title }) => {
+  return (
+    <div>
+      <h1 className="text-3xl font-bold text-slate-900 mb-4">{title}</h1>
+      <div className="bg-slate-100 border border-slate-200 rounded-lg p-8 text-center">
+        <p className="text-slate-500">This page is a placeholder for the "{title}" API test harness.</p>
+        <p className="text-slate-500 mt-2">Implementation is pending.</p>
+      </div>
+    </div>
+  );
+};
+
+export default ApiPlaceholder;