Add bootstrap scripts and restructure runbook

- scripts/run-bootstrap.sh: copies and runs the deploy user bootstrap on a
  fresh server, verifies SSH login, checks vault as a preflight step
- scripts/bootstrap-deploy-user.sh: runs on the server as root, accepts the
  SSH public key as an argument (read from keys/ by run-bootstrap.sh)
- scripts/check-vault.sh: decrypts vault.yml and verifies all 11 required
  secrets are present and non-empty
- docs/runbook.md: restructured into correct order (collections → DNS → vault
  → bootstrap → playbook), added scripts reference table, moved first-run
  notes for Gitea/Keycloak/registry into their own section
- README.md: added scripts/ to repo layout

scripts/run-bootstrap.sh

@@ -0,0 +1,76 @@
+#!/usr/bin/env bash
+# Copies bootstrap-deploy-user.sh to the server and runs it as root.
+# Run from the repo root: bash scripts/run-bootstrap.sh
+#
+# Requires: ssh access to the server as root via keys/root_cloud_ladkau_de
+
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+REPO_ROOT="$(cd "${SCRIPT_DIR}/.." && pwd)"
+
+SERVER="217.154.207.148"
+ROOT_KEY="${REPO_ROOT}/keys/root_cloud_ladkau_de"
+DEPLOY_KEY="${REPO_ROOT}/keys/notroot_cloud_ladkau_de"
+DEPLOY_PUBKEY="${REPO_ROOT}/keys/notroot_cloud_ladkau_de.pub"
+BOOTSTRAP_SCRIPT="${SCRIPT_DIR}/bootstrap-deploy-user.sh"
+
+# --- Preflight checks ---
+
+if [ ! -f "${ROOT_KEY}" ]; then
+  echo "ERROR: root SSH key not found at ${ROOT_KEY}" >&2
+  exit 1
+fi
+
+if [ ! -f "${DEPLOY_KEY}" ]; then
+  echo "ERROR: deploy SSH key not found at ${DEPLOY_KEY}" >&2
+  exit 1
+fi
+
+if [ ! -f "${DEPLOY_PUBKEY}" ]; then
+  echo "ERROR: deploy public key not found at ${DEPLOY_PUBKEY}" >&2
+  exit 1
+fi
+
+if [ ! -f "${BOOTSTRAP_SCRIPT}" ]; then
+  echo "ERROR: bootstrap script not found at ${BOOTSTRAP_SCRIPT}" >&2
+  exit 1
+fi
+
+# --- Vault check ---
+
+bash "${SCRIPT_DIR}/check-vault.sh"
+
+SSH_OPTS="-o StrictHostKeyChecking=accept-new -o ConnectTimeout=10"
+
+# --- Verify root access ---
+
+echo "==> Verifying root SSH access to ${SERVER}"
+if ! ssh ${SSH_OPTS} -i "${ROOT_KEY}" "root@${SERVER}" "echo ok" &>/dev/null; then
+  echo "ERROR: cannot connect as root to ${SERVER}" >&2
+  exit 1
+fi
+
+# --- Copy and run the bootstrap script ---
+
+echo "==> Copying bootstrap script to server"
+scp ${SSH_OPTS} -i "${ROOT_KEY}" "${BOOTSTRAP_SCRIPT}" "root@${SERVER}:/root/bootstrap-deploy-user.sh"
+
+echo "==> Running bootstrap script on server"
+SSH_PUBKEY="$(cat "${DEPLOY_PUBKEY}")"
+ssh ${SSH_OPTS} -i "${ROOT_KEY}" "root@${SERVER}" "bash /root/bootstrap-deploy-user.sh '${SSH_PUBKEY}'"
+
+# --- Verify deploy user access ---
+
+echo ""
+echo "==> Verifying deploy user SSH access"
+if ssh ${SSH_OPTS} -i "${DEPLOY_KEY}" "deploy@${SERVER}" "echo ok" &>/dev/null; then
+  echo "    OK — deploy user can log in"
+else
+  echo "ERROR: deploy user login failed — check the bootstrap output above" >&2
+  exit 1
+fi
+
+echo ""
+echo "Bootstrap complete. Next step:"
+echo "  ansible-playbook -i ansible/inventory.ini ansible/site.yml --ask-vault-pass"