Cannot send webhooks to Fluxer via client-side JS

Summary

I have my own static web app that uses client-side JavaScript to send messages via webhooks. It supports Discord, and I wanted to see if it could also support Fluxer, but I get CORS-related errors when trying to send anything to Fluxer. I assume it's related to how Fluxer seemingly doesn't add CORS Access-Control-Allow-Origin header in webhook responses, and Discord seemingly does, see https://developer.mozilla.org/en-US/docs/Web/HTTP/Guides/CORS/Errors/CORSMissingAllowOrigin?utm_source=devtools&utm_medium=firefox-cors-errors&utm_campaign=default

Steps to reproduce

1. Add a webhook in a Fluxer channel
2. Go to any webpage
3. Open browser console
4. Paste and run this minimal example (replacing webhook url)

   var webhookUrl = 'https://api.fluxer.app/webhooks/ID_HERE/KEY_HERE'; // Replace with your webhook URL
   
   var payload = {
     content: 'Hello from browser console!',
     username: 'Console Tester',
     embeds: [
       {
         title: 'Test Embed',
         description: 'This is a simple test message.'
       }
     ]
   };
   
   fetch(webhookUrl, {
     method: 'POST',
     headers: { 'Content-Type': 'application/json' },
     body: JSON.stringify(payload)
   })

5. Get an error
6. (Optional) refresh the page, replace with discord webhook link, and run again

Environment (optional)

Browser: Mozilla Firefox

Logs or screenshots (optional)

image Learn more leads to docs page I linked in summary