fix: support gltf uploads with local preview

lib/validate-folder.ts

@@ -2,10 +2,10 @@
 // Client-side folder validation
 // ---------------------------------------------------------------------------
 
-import { TEXTURE_EXTENSIONS } from '@/lib/constants'
+import { ASSET_EXTENSIONS, TEXTURE_EXTENSIONS } from '@/lib/constants'
 import type { TextureFile } from '@/lib/client-types'
 
-const TEXTURE_EXT_ARRAY = [...TEXTURE_EXTENSIONS]
+const SUPPORT_FILE_EXT_ARRAY = [...TEXTURE_EXTENSIONS, ...ASSET_EXTENSIONS]
 
 /** Discriminated union: either valid (with model) or invalid (with errors). */
 export type ValidationResult =
@@ -18,20 +18,20 @@ export function validateFolder(files: File[]): ValidationResult {
 
   const modelFiles = files.filter((f) => {
     const name = f.name.toLowerCase()
-    return name === 'model.glb'
+    return name === 'model.gltf'
   })
 
   if (modelFiles.length === 0) {
-    return { ok: false, errors: ['model.glb manquant (obligatoire)'] }
+    return { ok: false, errors: ['model.gltf manquant (obligatoire)'] }
   }
 
   if (modelFiles.length > 1) {
-    return { ok: false, errors: ['Un seul fichier model.glb est autorise'] }
+    return { ok: false, errors: ['Un seul fichier model.gltf est autorise'] }
   }
 
   const textureFiles = files.filter((f) => {
     const ext = f.name.slice(f.name.lastIndexOf('.')).toLowerCase()
-    return TEXTURE_EXT_ARRAY.includes(ext)
+    return SUPPORT_FILE_EXT_ARRAY.includes(ext)
   })
 
   for (const tf of textureFiles) {