When I think of dotfile management, I think it means handling standalone config files that are a few KB, intended to be user-editable, and are probably not changed by the running program itself.

I don’t think the Firefox config files meet those criteria. I don’t know, because I just leave them alone. I think a better tool for managing Firefox config would be to sync your profile, either through their servers or by self-hosting a sync server

wiki.js
It has a few UI editor options, but I can definitely recommend the WYSIWYG markdown editor

deleted by creator

I used to do it that way too, but my wife is not technically inclined, so we settled on something with a web UI for editing.
There are a few areas where the wiki is marginally better for me, the main one being the ability to do quick edits from a smartphone.
I do really like the simple approach with a static site builder though

I see the camera has PoE, will you use that and connect to the camera over a local network? If so you could just record the stream with ffmpeg

Your own wiki, and your own social media-type service

I post miscellaneous notes to my social media-type service, and save lists and more organised information (including recipes) to my wiki.

Wow it generates postal barcodes as well, that’s cool

How about a utility for generating and/or handling QR codes?

EDIT: as there are tools to generate QR codes, how about a tool to handle them? Scan and present the option to open any associated links/display data

Brother QL-550 here. I think it might be smaller than you need but judging by this and the other comments the Brother QL series looks good. Can’t remember what setup it needed (I don’t think there was much) but if the information is helpful to you I can take a look

Burn a book! Save a tree!

This is genuinely really classy