ui: better env var ux (#2006)

ui/desktop/src/components/settings_v2/extensions/extension-manager.ts

@@ -1,5 +1,5 @@
 import type { ExtensionConfig } from '../../../api/types.gen';
-import { ToastServiceOptions } from '../../../toasts';
+import { toastService, ToastServiceOptions } from '../../../toasts';
 import { addToAgent, removeFromAgent } from './agent-api';
 
 interface ActivateExtensionProps {
@@ -147,6 +147,11 @@ export async function updateExtension({
       console.error('[updateExtension]: Failed to update disabled extension in config:', error);
       throw error;
     }
+    // show a toast that it was successfully updated
+    toastService.success({
+      title: `Update extension`,
+      msg: `Successfully updated ${extensionConfig.name} extension`,
+    });
   }
 }