dont build on lpt2

devices.nix

@@ -45,7 +45,7 @@ in
       inherit (self.homeConfigurations) muede;
     };
     distributedBuilds = {
-      isBuilder = true;
+      isBuilder = false; # broken fan
       speedFactor = 14;
       hostPublicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIHGKoZ68wwyVRmPB0SkvpJUyUMDWeFbC5Je9zukyEOh7";
       clientPublicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKAbojdhb3PfazSRmudvo381Y+zUFVLMa7AbWbfK/Zp2 muede-lpt2-nix-builds";

nixosConfigurations/muede-pc2/gitea-runner.nix

@@ -11,7 +11,8 @@
       name = "pc2";
       url = "https://forge.darkest.space";
       # tokenFile should be in format TOKEN=<secret>, since it's EnvironmentFile for systemd
-      # placed manually, not managed by Nix
+      # placed manually, not managed by Nix.
+      # legacy "registration token", not the newer UUID+token flow
       tokenFile = "/etc/forgejo-runner/registration_token";
       # no docker:// image -> jobs run directly on the host, giving them
       # pc2's real Nix store/daemon (needed for `nix build` results to be