Multipart form UI and fixes

src-web/hooks/useSendAnyRequest.ts

@@ -3,11 +3,14 @@ import { invoke } from '@tauri-apps/api';
 import { trackEvent } from '../lib/analytics';
 import type { HttpResponse } from '../lib/models';
 import { useActiveEnvironmentId } from './useActiveEnvironmentId';
+import { useAlert } from './useAlert';
 
 export function useSendAnyRequest() {
   const environmentId = useActiveEnvironmentId();
+  const alert = useAlert();
   return useMutation<HttpResponse, string, string | null>({
     mutationFn: (id) => invoke('send_request', { requestId: id, environmentId }),
     onSettled: () => trackEvent('http_request', 'send'),
+    onError: (err) => alert({ title: 'Export Failed', body: err }),
   });
 }