template2: show bootstrap progress on tty1

- Display bootstrap banner and live progress on tty1 instead of login prompt
- Add custom getty greeting on other ttys indicating this is a bootstrap image
- Disable getty on tty1 during bootstrap so output is visible

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

hosts/template2/bootstrap.nix

@@ -6,11 +6,18 @@ let
     text = ''
       set -euo pipefail
 
+      # Clear screen and show bootstrap banner
+      clear
+      echo "================================================================================"
+      echo "                     NIXOS BOOTSTRAP IN PROGRESS"
+      echo "================================================================================"
+      echo ""
+
       # Read hostname set by cloud-init (from Terraform VM name via user-data)
       # Cloud-init sets the system hostname from user-data.txt, so we read it from hostnamectl
       HOSTNAME=$(hostnamectl hostname)
-      echo "DEBUG: Hostname from hostnamectl: '$HOSTNAME'"
-
+      echo "Hostname: $HOSTNAME"
+      echo ""
       echo "Starting NixOS bootstrap for host: $HOSTNAME"
       echo "Waiting for network connectivity..."
 
@@ -93,6 +100,21 @@ let
   };
 in
 {
+  # Custom greeting line to indicate this is a bootstrap image
+  services.getty.greetingLine = lib.mkForce ''
+    ================================================================================
+                          BOOTSTRAP IMAGE - NixOS \V (\l)
+    ================================================================================
+
+    Bootstrap service is running. Logs are displayed on tty1.
+    Check status: journalctl -fu nixos-bootstrap
+  '';
+
+  # Disable getty on tty1 so bootstrap output is visible
+  systemd.services."getty@tty1" = {
+    enable = false;
+  };
+
   systemd.services."nixos-bootstrap" = {
     description = "Bootstrap NixOS configuration from flake on first boot";
 
@@ -107,14 +129,17 @@ in
     serviceConfig = {
       Type = "oneshot";
       RemainAfterExit = true;
-      ExecStart = "${bootstrap-script}/bin/nixos-bootstrap";
+      ExecStart = lib.getExe bootstrap-script;
 
       # Read environment variables from cloud-init (set by cloud-init write_files)
       EnvironmentFile = "-/run/cloud-init-env";
 
-      # Logging to journald
-      StandardOutput = "journal+console";
-      StandardError = "journal+console";
+      # Output to tty1 for visibility on console
+      StandardOutput = "tty";
+      StandardError = "tty";
+      TTYPath = "/dev/tty1";
+      TTYReset = true;
+      TTYVHangup = true;
     };
   };
 }