fix: new posts were not rendering css properly

entrypoint.sh

@@ -5,6 +5,11 @@ if [ "$#" -gt 0 ]; then
 	exec "$@"
 fi
 
+# Ensure posts directory data file exists for layout inheritance
+if [ ! -f src/posts/posts.json ]; then
+	echo '{"layout": "layouts/post.njk"}' > src/posts/posts.json
+fi
+
 # Build static site from mounted or packaged markdown posts
 echo "[blog-engine] Compiling static site with Eleventy..."
 npm run build || exit 1