The reason you are still seeing command not found is that darwin-rebuild does not exist on your computer yet.When doing a brand-new installation of nix-darwin, the darwin-rebuild tool is not part of the standard Nix installer. You have to bootstrap it using the nix run command first, which will dynamically pull the tool from GitHub and execute the initial build.Run the following command from your terminal inside your ~/.dotfiles directory:zshsudo nix run nix-darwin#darwin-rebuild -- switch --flake ~/.dotfiles#lt-mbp
## firstmate + Gitea (one-time per machine, secrets not in nix)
The firstmate crew dispatch + Gitea PR helper are wired by `darwin-rebuild`, but two secrets must be set manually per machine (nix cannot manage tokens without exposing them):
Verify: `fm` launches OpenCode 2 as the first mate (isolated `~/.config/opencode2`); `oc2 --version` prints an OpenCode 2 version; `pi --list-models mimo` shows `opencode-go/mimo-v2.5-pro`; `tea pulls list --repo transnet/investor-flow` works.