Add Forgejo namespace workflow stack

nixos/hosts/burrow-forge/default.nix

@@ -0,0 +1,46 @@
+{ self, ... }:
+
+{
+  imports = [
+    ./hardware-configuration.nix
+    ./disko-config.nix
+    self.nixosModules.burrow-forge
+    self.nixosModules.burrow-forge-runner
+    self.nixosModules.burrow-forgejo-nsc
+  ];
+
+  system.stateVersion = "24.11";
+
+  time.timeZone = "America/Los_Angeles";
+
+  nix.settings.experimental-features = [
+    "nix-command"
+    "flakes"
+  ];
+
+  services.burrow.forge = {
+    enable = true;
+    adminPasswordFile = "/var/lib/burrow/intake/forgejo_pass_contact_at_burrow_net.txt";
+    authorizedKeys = [
+      (builtins.readFile ../../keys/contact_at_burrow_net.pub)
+      (builtins.readFile ../../keys/agent_at_burrow_net.pub)
+    ];
+  };
+
+  services.burrow.forgeRunner = {
+    enable = true;
+    sshPrivateKeyFile = "/var/lib/burrow/intake/agent_at_burrow_net_ed25519";
+  };
+
+  services.burrow.forgejoNsc = {
+    enable = true;
+    nscTokenFile = "/var/lib/burrow/intake/forgejo_nsc_token.txt";
+    dispatcher = {
+      configFile = "/var/lib/burrow/intake/forgejo_nsc_dispatcher.yaml";
+    };
+    autoscaler = {
+      enable = true;
+      configFile = "/var/lib/burrow/intake/forgejo_nsc_autoscaler.yaml";
+    };
+  };
+}

nixos/hosts/burrow-forge/disko-config.nix

@@ -0,0 +1,36 @@
+{ lib, ... }:
+
+{
+  disko.devices = {
+    disk.main = {
+      type = "disk";
+      device = lib.mkDefault "/dev/sda";
+      imageName = "burrow-forge";
+      imageSize = "80G";
+      content = {
+        type = "gpt";
+        partitions = {
+          ESP = {
+            size = "512M";
+            type = "EF00";
+            content = {
+              type = "filesystem";
+              format = "vfat";
+              mountpoint = "/boot";
+              mountOptions = [ "umask=0077" ];
+            };
+          };
+
+          root = {
+            size = "100%";
+            content = {
+              type = "filesystem";
+              format = "ext4";
+              mountpoint = "/";
+            };
+          };
+        };
+      };
+    };
+  };
+}

nixos/hosts/burrow-forge/hardware-configuration.nix

@@ -0,0 +1,11 @@
+{ ... }:
+
+{
+  # Derived from Hetzner Cloud rescue-mode hardware inspection.
+  boot.initrd.availableKernelModules = [
+    "ahci"
+    "sd_mod"
+    "virtio_pci"
+    "virtio_scsi"
+  ];
+}