Add error handling for asset import in gltf-model-import.ts

src/assets/gltf-model-import.ts

@@ -335,6 +335,8 @@ export async function importModelAssetFromFile(
 
   const metadata = extractModelAssetMetadata(gltf, format);
   const asset = createModelAssetRecord(sourceName, mimeType, bytes, metadata);
+
+  try {
     await storage.putAsset(asset.storageKey, {
       bytes,
       mimeType
@@ -350,6 +352,10 @@ export async function importModelAssetFromFile(
       modelInstance,
       loadedAsset: createLoadedModelAsset(asset, cloneTemplateScene(gltf.scene))
     };
+  } catch (error) {
+    await storage.deleteAsset(asset.storageKey).catch(() => undefined);
+    throw error;
+  }
 }
 
 export async function loadModelAssetFromStorage(