Many changes.

lib/client/getInitialData.ts

@@ -0,0 +1,14 @@
+import useCollectionSlice from "@/store/collection";
+import { useEffect } from "react";
+import { useSession } from "next-auth/react";
+
+export default function getInitialData() {
+  const { status } = useSession();
+  const { setCollections } = useCollectionSlice();
+
+  useEffect(() => {
+    if (status === "authenticated") {
+      setCollections();
+    }
+  }, [status]);
+}