Add production Jenkins release pipelines

scripts/deploy/maintenance-on.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+MAINTENANCE_FILE="${GENARRATIVE_MAINTENANCE_FILE:-/var/lib/genarrative/maintenance/enabled}"
+REASON="${*:-manual}"
+
+mkdir -p "$(dirname "${MAINTENANCE_FILE}")"
+{
+  printf "enabled_at=%s\n" "$(date -u +%Y-%m-%dT%H:%M:%SZ)"
+  printf "reason=%s\n" "${REASON}"
+} >"${MAINTENANCE_FILE}"
+
+chmod 0644 "${MAINTENANCE_FILE}"
+echo "[maintenance] 已进入维护模式: ${MAINTENANCE_FILE}"