This is fair! You have to be an enthusiast and/or stubborn as hell to get through a new setup, esp where webdav is not packaged like other apps. Maybe choose a cloud sync option.

Tailscale service configs for HTTPS ingress and DNS resolution. Podman quadlets / podlets for everything except backup software and tailscale itself. I use the open version of VS code to edit config files in place, but I push them to a private git as well as having them backed up. Storage for app data, media, and configs (everything but OS) is via NFS shares from my gaming PC’s RAID volume. I can run a plenty of apps on an old thinkpad this way. After you configure the first few quadlets with tailscale, it gets real straightforward, but there is a learning curve. Yes, I use SSH, but it is the remote conmection and terminal in Code.

I can see having a single node in the whole machine, but one per mix makes me think this photo is doctored. Then again an esp32 is pretty damn cheap.