Update Next.js to 16.1.2 and adjust build scripts

Updated Next.js and related dependencies from 16.1.1 to 16.1.2 in pnpm-lock.yaml. Also updated package.json build and start scripts to use the '@objectdocs/site' filter for consistency with package naming.

Author: hotlong

package.json

@@ -4,8 +4,8 @@
   "private": true,
   "scripts": {
     "dev": "objectdocs dev",
-    "build": "pnpm --filter './packages/site' -r build",
-    "start": "objectdocs start",
+    "build": "pnpm --filter '@objectdocs/site' -r build",
+    "start": "pnpm --filter '@objectdocs/site' -r start",
     "translate": "objectdocs translate",
     "translate:all": "objectdocs translate --all"
   },