Fix duplicate-host check reporting false SSH failures

The remote bash script run over SSH ended with a for-loop whose last
statement was `[[ "$n" == "$target" ]] && echo ...`. When the last
VM/CT checked on the node didn't match --host, that test evaluated
false and became the exit status of the whole remote script (1) --
which the wrapper then misreported as "couldn't reach the node",
even though SSH connectivity and the check itself were both fine.
The actual signal is the script's stdout, not its exit code, so end
it with an explicit exit 0.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

README.md

@@ -18,22 +18,23 @@ list:
 
 | Target | Purpose |
 | --- | --- |
-| `linode-minimal` | Minimal NixOS host profile on a Linode VPS (real, deployed) |
-| `proxmox-minimal` | Minimal NixOS host profile on Proxmox (real, deployed — previously the flat `nix-minimal` target) |
+| `linode-minimal` | Minimal NixOS host profile on a Linode VPS |
+| `proxmox-minimal` | Minimal NixOS host profile on Proxmox — previously the flat `nix-minimal` target |
 | `lxc-minimal` | Minimal NixOS host profile in a Proxmox LXC container |
-| `linode-nix-cache` / `proxmox-nix-cache` / `lxc-nix-cache` | Local Nix binary cache and remote builder (`lxc-nix-cache` is the real, deployed one — previously `proxmox-nix-cache`, itself previously the flat `nix-cache` target) |
-| `linode-server` / `proxmox-server` / `lxc-server` | Storage, NFS, backup, and monitoring exporter host (`proxmox-server` is the real, deployed one — previously the flat `server` target) |
-| `linode-docker` / `proxmox-docker` / `lxc-docker` | Docker host for the main container stack (`proxmox-docker` is the real, deployed one — previously the flat `docker` target) |
-| `linode-gui` / `proxmox-gui` / `lxc-gui` | Cinnamon desktop workstation (`proxmox-gui` is the real, deployed one — previously the flat `nixos` target) |
-| `proxmox-pxe-boot` / `lxc-pxe-boot` | HTTP/iPXE boot asset host (`proxmox-pxe-boot` is the real, deployed one — previously the flat `pxe-boot` target) |
-| `linode-tailscale-exit-node` / `proxmox-tailscale-exit-node` / `lxc-tailscale-exit-node` | Tailscale exit node (no deployed target yet; `lxc-tailscale-exit-node` is the one planned for actual use) |
+| `linode-nix-cache` / `proxmox-nix-cache` / `lxc-nix-cache` | Local Nix binary cache and remote builder — previously the flat `nix-cache` target |
+| `linode-server` / `proxmox-server` / `lxc-server` | Storage, NFS, backup, and monitoring exporter host — previously the flat `server` target |
+| `linode-docker` / `proxmox-docker` / `lxc-docker` | Docker host for the main container stack — previously the flat `docker` target |
+| `linode-gui` / `proxmox-gui` / `lxc-gui` | Cinnamon desktop workstation — previously the flat `nixos` target |
+| `proxmox-pxe-boot` / `lxc-pxe-boot` | HTTP/iPXE boot asset host — previously the flat `pxe-boot` target |
+| `linode-tailscale-exit-node` / `proxmox-tailscale-exit-node` / `lxc-tailscale-exit-node` | Tailscale exit node |
 
-This table is the only place "(real, deployed)" status is tracked — there's
-no separate machine-readable copy to keep in sync. `scripts/create-proxmox-resource.sh`
-guards against creating a same-identity duplicate of an already-deployed host
-by checking the Proxmox node itself (live `qm`/`pct` state) rather than any
-file in this repo, since a static list can't track whether a resource still
-actually exists.
+Which variant of a given buildtype is actually deployed isn't tracked
+anywhere in this repo — that's live infrastructure state, not something a
+committed file can keep accurate, and it changes independently of the code.
+Check the Proxmox node itself, or `/etc/flake-target` on a running host (see
+below), if you need to know what's really out there right now.
+`scripts/create-proxmox-resource.sh`'s duplicate-host guard works the same
+way: it checks the Proxmox node directly rather than any file here.
 
 Each buildtype's `hosts/<name>/host.nix` carries the per-machine identity
 (hostname, hostId, per-machine secrets, `system.stateVersion`) that must stay

scripts/create-proxmox-resource.sh

@@ -320,6 +320,7 @@ for id in $(pct list 2>/dev/null | awk 'NR>1{print $1}'); do
   n="$(pct config "$id" 2>/dev/null | grep -oP '^hostname:\s*\K\S+' || true)"
   [[ "$n" == "$target" ]] && echo "lxc ${id} ${n}"
 done
+exit 0
 REMOTE_SCRIPT
   )" || ssh_check_status=$?
   if [[ "$ssh_check_status" -ne 0 ]]; then