Codex fixes

package.json

@@ -5,21 +5,17 @@
   "scripts": {
     "dev": "next dev",
     "build": "next build",
-    "start": "next start",
+    "start": "node .next/standalone/server.js",
     "lint": "eslint"
   },
   "dependencies": {
     "@tailwindcss/typography": "^0.5.19",
     "better-sqlite3": "^12.6.2",
-    "date-fns": "^4.1.0",
     "gray-matter": "^4.0.3",
-    "next": "16.1.6",
-    "next-mdx-remote": "^5.0.0",
+    "next": "^16.2.6",
+    "next-mdx-remote": "^6.0.0",
     "react": "19.2.3",
-    "react-dom": "19.2.3",
-    "rehype-autolink-headings": "^7.1.0",
-    "rehype-slug": "^6.0.0",
-    "remark-gfm": "^4.0.1"
+    "react-dom": "19.2.3"
   },
   "devDependencies": {
     "@tailwindcss/postcss": "^4",
@@ -29,8 +25,11 @@
     "@types/react-dom": "^19",
     "babel-plugin-react-compiler": "1.0.0",
     "eslint": "^9",
-    "eslint-config-next": "16.1.6",
+    "eslint-config-next": "^16.2.6",
     "tailwindcss": "^4",
     "typescript": "^5"
+  },
+  "overrides": {
+    "postcss": "8.5.10"
   }
 }