fix: fall back to home when no history in GoBackButton

components/go-back-button.tsx

@@ -4,9 +4,19 @@ import { useRouter } from "next/navigation";
 
 export default function GoBackButton() {
   const router = useRouter();
+
+  const handleBack = () => {
+    if (window.history.length > 1) {
+      router.back();
+    } else {
+      router.push("/");
+    }
+  };
+
   return (
     <button
-      onClick={() => router.back()}
+      onClick={handleBack}
+      aria-label="Go back to previous page"
       className="px-4 py-1.5 text-sm bg-gradient-to-b from-blue-100 to-blue-200 border border-blue-300 rounded hover:from-blue-200 hover:to-blue-300 transition-colors"
     >
       ← Go Back