antsu
What you want are two servers, one for each purpose. What you are proposing is very janky and will compromise the reliability of your services.
Cool. Time to get ready for another round of broken extensions.
RustDesk sort of fits the bill. It’s open-source, has 2FA, can be self-hosted (but not needed), the client runs on anything, but the main issue here is that no amount of workarounds will make an untrusted machine any less untrusted, you’re essentially extending the display and input from a dubious machine into your own.
If you’re really worried about the security aspect, my suggestion would be to only use your phone as the client, and if you need to do anything more complex, use a Bluetooth keyboard connected to it. There are some foldable keyboards that don’t take too much space and are not terrible.
Just echoing what others said, Plank does not run on Wayland. You can install the “Dash to Dock” Gnome extension for a very similar experience (minus widgets). If using KDE, consider replacing Guake (which is GTK) with Yakuake (Qt).
Timeshift with BTRFS kicks ass. I have mine set for daily snapshots, retained for a week. Only the changes between snapshots are stored, so the extra disk usage is minimal, and easily justified by the peace of mind in case of fuck-ups or broken updates.
+1 for Immich. It’s the most complete and competent Google Photos replacement yet.
Running the right command on the wrong SSH session/machine.