If you have an android phone, you can plug it in via USB and enable USB Internet tethering, which will give you working internet access on your machine to do the Wi-Fi debugging with.

Jellyfin is a popular alternative that’s more customizable. Maybe its clients are more accessible?

Uhm… Why not use a revision control system designed for programmers, like git?

Quality of Wi-Fi depends on so many factors (including how many devices are around, regardless of whether they’re connected to your network specifically), and even in the best case scenario it’s not going to come close to the stability, speed, and latency of an Ethernet cable.