Fix corrupted font resource loading in older documents

node-graph/graph-craft/src/application_io/resource/opfs.rs

@@ -153,6 +153,9 @@ async fn drain_queue(inner: Arc<Mutex<Inner>>) {
 			Mutation::Write { hash, bytes } => {
 				if let Err(error) = write_file(&directory, &hash, &bytes).await {
 					log::error!("OPFS write for {hash} failed: {error:?}");
+
+					// Nothing reached disk, so leaving the hash listed would claim a file that later sessions cannot read
+					inner.lock().unwrap().on_disk.remove(&hash);
 				}
 			}
 			Mutation::Delete { hash } => {

node-graph/nodes/gstd/src/platform_application_io.rs

@@ -269,8 +269,19 @@ pub async fn resource<'a: 'n>(
 	hash: Item<ResourceHash>,
 ) -> Item<Resource> {
 	let hash = hash.into_element();
-	let application_io = editor_api.into_element().application_io.as_ref().expect("ApplicationIo must be available when using resources");
-	let resource = application_io.load_resource(hash).await.unwrap_or_else(|| panic!("Resource {hash} not found"));
+	let placeholder = || -> Item<Resource> { Item::new_from_element(Resource::empty()) };
+
+	let Some(application_io) = editor_api.into_element().application_io.as_ref() else {
+		log::error!("Resource {hash} is unavailable because the platform's application IO is missing");
+		return placeholder();
+	};
+
+	// Stored bytes go missing when the browser evicts its storage or a write is interrupted
+	let Some(resource) = application_io.load_resource(hash).await else {
+		log::error!("Resource {hash} was not found in storage");
+		return placeholder();
+	};
+
 	Item::new_from_element(resource)
 }