docs: document model stats helper

README.md

@@ -68,6 +68,7 @@ Access the app at `http://localhost:3000`
 > **Note:** The current upload contract accepts `model.gltf` and preserves it as GLTF. `.glb` uploads are rejected by validation.
 >
 > Local 3D preview supports `model.gltf` folders by resolving dropped companion files such as `model.bin` and textures through local object URLs.
+> The preview also shows a small model stats helper with estimated draw calls, meshes, triangles, materials, and texture count.
 
 ### Production (Coolify / Docker)
 

components/ModelViewer.tsx

@@ -60,7 +60,7 @@ export default function ModelViewer({ url, assetUrls, filename, size }: ModelVie
         </span>
       </div>
       {stats && (
-        <div className="absolute bottom-3 left-3 right-3 z-10 grid grid-cols-2 gap-2 rounded-lg border border-white/10 bg-black-900/75 p-2 text-xs text-gray-300 backdrop-blur sm:left-auto sm:right-3 sm:w-64">
+        <div className="absolute top-12 right-3 z-10 flex w-44 flex-col gap-1.5 rounded-lg border border-white/10 bg-black-900/75 p-2 text-xs text-gray-300 backdrop-blur">
           <span className="flex justify-between gap-3">
             <span className="text-gray-500">Draw calls</span>
             <span className="font-mono text-gray-200">{stats.drawCalls}</span>