improvement: dashboard UX improved

frontend/src/app/(dashboard)/treatment/page.tsx

@@ -0,0 +1,10 @@
+export default function TreatmentPage() {
+  return (
+    <div className="space-y-3">
+      <h1 className="text-2xl font-semibold text-text-primary">Treatment</h1>
+      <p className="text-sm text-text-secondary">
+        Treatment module is coming soon.
+      </p>
+    </div>
+  );
+}