Awesome advice and a great way to prepare for unexpected death or incapacitation (if you are the one in your family who usually handles all this stuff). I only would add that if you do go ahead with this, use tools or a medium that mere mortals are familiar with. Assume the person who needs to read it only knows git as a Larry the Cable Guy reference ("git 'er done!").
I think this overly technical approach from the OP is terrible for a handover. You're now tied to this exact stack of technologies and after your death, it won't be updated even once.
I tape the manual and the transit bolts of a dishwasher to the top of it and that's it. For heating and stuff, a laminated sheet of paper attached to the pipe does the trick.
If you love all things digital, create a shared online folder filled with .docx documents. For those you'll find a tool to open and edit them in 40 years time.
Sure, for some the creation of the digital stack is the purpose itself. But documentation that lasts decades? I don't believe it.
Exactly my thoughts as well. Labels and stickers in appropriate locations. E.g: my house has junction boxes with circuit labels in marker. Notes for appliance specifics, filter sizes, etc. This way the information can be found at the relevant location, does not get deleted, or goes behind a paywall.
Us tech people love to over-complicate things sometimes.
