I use a combination of netbox for the physical/logical network and server connectivity, and outline for text documentation of the different components.

You should look into GrapheneOS if you’re set on using pixel.

Looks good and I was able to get it on pretty quickly. I was about to post this from the app but saw it’s missing the web’s markdown shortcuts and image upload option.

Also looking at this post the screenshots are cropped and I didn’t see a straight forward way of looking at the whole image.

You may want to give this a quick read before using signal

https://dessalines.github.io/essays/why_not_signal.html

I personally haven’t verified the claims on there but I’ve been using a personal instance of Matrix for a while now and it’s been working great.