chore(relocate): stub out S1 items moved to railiance-infra

cloudinit/user-data.yaml and tools/cmd/railiance-plan-host relocated
to railiance-infra per ADR-003. Tombstone stubs left in place.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

cloudinit/user-data.yaml

@@ -1,12 +1,2 @@
-#cloud-config
-package_update: true
-package_upgrade: true
-users:
-  - name: ubuntu
-    sudo: ALL=(ALL) NOPASSWD:ALL
-    groups: sudo
-    shell: /bin/bash
-    ssh_authorized_keys:
-      - ssh-ed25519 AAAA...replace_with_your_pubkey
-runcmd:
-  - [ sh, -lc, 'echo Railiance seed host initialized' ]
+# RELOCATED — this file has moved to railiance-infra/cloudinit/user-data.yaml
+# Cloud-init is S1 Infrastructure Substrate scope (ADR-003).

tools/cmd/railiance-plan-host

@@ -1,87 +1,5 @@
 #!/usr/bin/env bash
-# tools/cmd/railiance-plan-host
-# Provider-neutral planning and checklist for a first Railiance host.
-
-set -euo pipefail
-
-ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
-CLOUDINIT="${ROOT}/cloudinit/user-data.yaml"
-
-usage() {
-  cat <<'EOF'
-Usage: railiance-plan-host [--cloudinit] [--check] [--help]
-
-  --cloudinit   Print the recommended cloud-init user-data to stdout.
-  --check       Print a pre-VM checklist only.
-  --help        Show this help.
-
-Without flags, this command prints the recommended host plan and a checklist.
-EOF
-}
-
-print_hdr() { printf "\n%s\n" "$1"; printf "%0.s-" $(seq 1 "${#1}"); echo; }
-
-plan() {
-  print_hdr "Provider-neutral host plan"
-  cat <<'PLAN'
-Distro:   Ubuntu Server 24.04 LTS (or Debian 12)
-CPU/RAM:  2 vCPU / 4–8 GB RAM (start) — scale as needed
-Disk:     60–100 GB SSD (expand later for data)
-Network:  Public IPv4 (and/or IPv6), allow ports 22, 80, 443
-SSH:      Use ed25519 key; disable password auth
-User:     'ubuntu' or your provider's default user
-Backups:  Snapshot weekly; keep 2–4 rotations
-
-Security baseline:
-  - Regular updates (unattended-upgrades or Ansible role)
-  - UFW/iptables with allow 22,80,443; deny rest (adjust for cluster)
-  - Fail2ban (optional)
-  - Time sync (systemd-timesyncd or chrony)
-
-Cloud-init:
-  Use 'bin/railiance cloudinit' or this command with --cloudinit to get the template.
-PLAN
-}
-
-checklist() {
-  print_hdr "Rent-a-VM Checklist"
-  cat <<'CK'
-[ ] Provider account ready (billing set)
-[ ] Region chosen (low latency to you/users)
-[ ] Image: Ubuntu 24.04 LTS (or Debian 12)
-[ ] Size: 2 vCPU / 4–8 GB RAM / 60+ GB SSD
-[ ] SSH key uploaded (use ed25519)
-[ ] Firewall security group: allow 22,80,443 (tighten later)
-[ ] Cloud-init pasted (from bin/railiance cloudinit)
-[ ] Hostname set (e.g., railiance-seed-1)
-[ ] Record public IP / DNS
-CK
-}
-
-cloudinit() {
-  if [[ -f "${CLOUDINIT}" ]]; then
-    cat "${CLOUDINIT}"
-  else
-    echo "cloud-init template not found at ${CLOUDINIT}" >&2
+# RELOCATED — this tool has moved to railiance-infra/tools/cmd/railiance-plan-host
+# Host planning is S1 Infrastructure Substrate scope (ADR-003).
+echo "This tool has moved to railiance-infra. See ADR-003." >&2
 exit 1
-  fi
-}
-
-# Parse flags
-DO_PLAN=true
-DO_CHECK=true
-while [[ $# -gt 0 ]]; do
-  case "$1" in
-    --cloudinit) cloudinit; exit 0 ;;
-    --check) DO_PLAN=false; DO_CHECK=true; shift ;;
-    --help|-h) usage; exit 0 ;;
-    *) echo "Unknown option: $1" >&2; usage; exit 2 ;;
-  esac
-done
-
-$DO_PLAN && plan
-$DO_CHECK && checklist
-
-echo
-echo "Tip: After renting the VM, seed it with: tools/seed_node.sh"
-