vault: implement bootstrap integration

hosts/vaulttest01/configuration.nix

@@ -0,0 +1,110 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+{
+  imports = [
+    ../template2/hardware-configuration.nix
+
+    ../../system
+    ../../common/vm
+  ];
+
+  nixpkgs.config.allowUnfree = true;
+  boot.loader.grub.enable = true;
+  boot.loader.grub.device = "/dev/vda";
+
+  networking.hostName = "vaulttest01";
+  networking.domain = "home.2rjus.net";
+  networking.useNetworkd = true;
+  networking.useDHCP = false;
+  services.resolved.enable = true;
+  networking.nameservers = [
+    "10.69.13.5"
+    "10.69.13.6"
+  ];
+
+  systemd.network.enable = true;
+  systemd.network.networks."ens18" = {
+    matchConfig.Name = "ens18";
+    address = [
+      "10.69.13.150/24"
+    ];
+    routes = [
+      { Gateway = "10.69.13.1"; }
+    ];
+    linkConfig.RequiredForOnline = "routable";
+  };
+  time.timeZone = "Europe/Oslo";
+
+  nix.settings.experimental-features = [
+    "nix-command"
+    "flakes"
+  ];
+  nix.settings.tarball-ttl = 0;
+  environment.systemPackages = with pkgs; [
+    vim
+    wget
+    git
+  ];
+
+  # Open ports in the firewall.
+  # networking.firewall.allowedTCPPorts = [ ... ];
+  # networking.firewall.allowedUDPPorts = [ ... ];
+  # Or disable the firewall altogether.
+  networking.firewall.enable = false;
+
+  # Testing config
+  # Enable Vault secrets management
+  vault.enable = true;
+
+  # Define a test secret
+  vault.secrets.test-service = {
+    secretPath = "hosts/vaulttest01/test-service";
+    restartTrigger = true;
+    restartInterval = "daily";
+    services = [ "vault-test" ];
+  };
+
+  # Create a test service that uses the secret
+  systemd.services.vault-test = {
+    description = "Test Vault secret fetching";
+    wantedBy = [ "multi-user.target" ];
+    after = [ "vault-secret-test-service.service" ];
+
+    serviceConfig = {
+      Type = "oneshot";
+      RemainAfterExit = true;
+
+      ExecStart = pkgs.writeShellScript "vault-test" ''
+        echo "=== Vault Secret Test ==="
+        echo "Secret path: hosts/vaulttest01/test-service"
+
+        if [ -f /run/secrets/test-service/password ]; then
+          echo "✓ Password file exists"
+          echo "Password length: $(wc -c < /run/secrets/test-service/password)"
+        else
+          echo "✗ Password file missing!"
+          exit 1
+        fi
+
+        if [ -d /var/lib/vault/cache/test-service ]; then
+          echo "✓ Cache directory exists"
+        else
+          echo "✗ Cache directory missing!"
+          exit 1
+        fi
+
+        echo "Test successful!"
+      '';
+
+      StandardOutput = "journal+console";
+    };
+  };
+
+  system.stateVersion = "25.11"; # Did you read the comment?
+}
+