add next auth

package.json

@@ -18,12 +18,9 @@
     "@tinacms/datalayer": "^2.0.18",
     "astro": "^6.2.1",
     "express": "^5.2.1",
-    "fs-extra": "^11.3.4",
     "mongodb-level": "^0.0.4",
-    "slate": "^0.124.1",
-    "slate-dom": "^0.124.1",
-    "slate-hyperscript": "^0.100.0",
-    "slate-react": "^0.124.0",
+    "next": "^15.5.15",
+    "next-auth": "^4.24.14",
     "tailwindcss": "^4.2.4",
     "tinacms": "^3.7.5",
     "tinacms-authjs": "^21.0.5",