refac

src/lib/components/chat/Chat.svelte

@@ -1464,10 +1464,6 @@
 				? [atSelectedModel.id]
 				: selectedModels;
 
-		if (selectedModelIds.filter((id) => id !== '').length === 0) {
-			return;
-		}
-
 		// Create response messages for each selected model
 		for (const [_modelIdx, modelId] of selectedModelIds.entries()) {
 			const model = $models.filter((m) => m.id === modelId).at(0);

src/lib/components/chat/Messages.svelte

@@ -256,6 +256,10 @@
 	};
 
 	const editMessage = async (messageId, { content, files }, submit = true) => {
+		if ((selectedModels ?? []).filter((id) => id).length === 0) {
+			toast.error($i18n.t('Model not selected'));
+			return;
+		}
 		if (history.messages[messageId].role === 'user') {
 			if (submit) {
 				// New user message