I’m currently building a similar device, which uses miraclecast for screen sharing from a phone or laptop and jellyfin in firefox kiosk mode controlled via the jellyfin app as a idle screen. Also sending media links via kde connect is possible. I still want to implement hypnotix for tv and some kind of intigration with the streaming services of the german public brodcasters. I haven’t thought about dlna but I like the idea.

I’m also using Debian as a base but I’m using LXQT with Wayland insted if Plasma. I tested everythin on a rasberry pi 4b but it’s struggeling. I want to move everything to a rock 5c.

You could try pkexec insted of sudo. Pkexec pops up the password prompt in a window insted of prompting in the terminal.

I’m assuming you’re using the nautilus file manager. I found this post in adding right click actions to nautilus: https://askubuntu.com/questions/210192/how-can-you-add-an-item-to-the-right-click-menu-in-nautilus-without-nautilus-ac#672553 You could make a bash script like shown in the post and use polkit to open the password prompt and run a command as root.

Jeden Tag verliert man ein bisschen Hoffnung.

They haven’t implemented the driver for the Fairphone 5 yet. I think it works on the Fairphone 4.

I got a Fairphone so I could run calyxos. The only thing missing for me is the option to stop charging at 80%.

Most phones can, it’s just disabled in software, you can enable it in Androids developer settings.