Home Assistant itself falls into category 2, with some integrations/utilities in category 1. The amount of stuff it pulls from the mothership and GitHub is crazy. I wish it were local-only by default.
Is the certificate for that domain pinned? If not, just host it locally. In fact, I'm going to try doing that. Have you already checked the Docs? Somebody probably already published a gist somewhere with the needed path
A fresh HAOS VM can not successfully boot without internet access, maybe due to how they are managing everything with Docker within HAOS? I noticed this because the VM was accidentally put into a network that does not have stable internet, and I kept wondering why it didn't boot.
Really hope that there is a fully offline solution.
> The amount of stuff it pulls from the mothership and GitHub is crazy.
It seems the problem of HAOS, not Home Assistant itself. I have install my HA in NixOS from its package manager, it seems not try to download somethings.