Add single-exchange instance-only deploy menu options.

Manage menu 4/5/6 install OKX/Binance/Gate Flask only without hub or agents; reuse setup_env --only and narrowed PM2 verify.

Co-authored-by: Cursor <cursoragent@cursor.com>

deploy/lib/install.sh

@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-# deploy/lib/install.sh — 一键部署
+# deploy/lib/install.sh — 一键部署(全套) / 单所仅实例
 set -e
 set -u
 if [ -n "${BASH_VERSION:-}" ]; then
@@ -10,6 +10,26 @@ LIB_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 # shellcheck source=common.sh
 source "${LIB_DIR}/common.sh"
 
+EXCHANGE=""
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --exchange)
+      EXCHANGE="${2:-}"
+      shift 2
+      ;;
+    -h|--help)
+      echo "用法: bash deploy/lib/install.sh [--exchange okx|binance|gate]"
+      echo "  无 --exchange: 全套(三所+中控)"
+      echo "  有 --exchange: 仅该所 Flask 实例(不含中控/agent)"
+      exit 0
+      ;;
+    *)
+      echo "未知参数: $1" >&2
+      exit 1
+      ;;
+  esac
+done
+
 install_fresh() {
   step "克隆仓库"
   if [[ -d "${INSTALL_ROOT}" ]]; then
@@ -45,6 +65,28 @@ run_install_pipeline() {
   print_post_install_guide "$(detect_server_ip)"
 }
 
+run_instance_pipeline() {
+  local ex_key="$1"
+  local dir_name
+  dir_name="$(exchange_dir "${ex_key}")"
+
+  step "单所环境部署 setup_env.sh --only ${ex_key}(不含中控)"
+  bash "${REPO_ROOT}/deploy/setup_env.sh" --only "${ex_key}" --install-system-deps
+
+  step "启动 PM2 仅 ${dir_name}"
+  bash "${REPO_ROOT}/deploy/pm2_start_all.sh" --only "${ex_key}"
+
+  pm2_save_startup
+  local cron_script="${REPO_ROOT}/${dir_name}/scripts/install_backup_cron.sh"
+  if [[ -x "${cron_script}" ]]; then
+    step "安装 ${ex_key} 备份 cron"
+    bash "${cron_script}" || true
+  fi
+
+  verify_deployment "$(detect_server_ip)" "${ex_key}" || true
+  print_post_install_guide_instance "${ex_key}" "$(detect_server_ip)"
+}
+
 handle_existing_install() {
   echo ""
   echo "检测到已部署安装: ${INSTALL_ROOT}"
@@ -72,10 +114,47 @@ handle_existing_install() {
   esac
 }
 
+ensure_repo_ready() {
+  if repo_ready "${INSTALL_ROOT}"; then
+    REPO_ROOT="${INSTALL_ROOT}"
+  elif [[ -n "${REPO_ROOT:-}" ]] && repo_ready "${REPO_ROOT}"; then
+    :
+  else
+    REPO_ROOT=""
+  fi
+
+  if [[ -z "${REPO_ROOT}" ]]; then
+    install_system_packages
+    install_node_pm2
+    install_fresh
+    REPO_ROOT="${INSTALL_ROOT}"
+  else
+    install_system_packages
+    install_node_pm2
+  fi
+}
+
+main_install_instance() {
+  local ex_key="$1"
+  require_root
+  require_ubuntu
+  ensure_repo_ready
+  run_instance_pipeline "${ex_key}"
+}
+
 main_install() {
   require_root
   require_ubuntu
 
+  if [[ -n "${EXCHANGE}" ]]; then
+    local ex_key=""
+    if ! ex_key="$(normalize_exchange_key "${EXCHANGE}")"; then
+      die "无效 --exchange: ${EXCHANGE} (期望 okx|binance|gate)"
+    fi
+    main_install_instance "${ex_key}"
+    return 0
+  fi
+
   if repo_ready "${INSTALL_ROOT}"; then
     REPO_ROOT="${INSTALL_ROOT}"
   elif repo_ready "${REPO_ROOT}"; then
@@ -89,16 +168,7 @@ main_install() {
     return 0
   fi
 
-  if [[ -z "${REPO_ROOT}" ]]; then
-    install_system_packages
-    install_node_pm2
-    install_fresh
-    REPO_ROOT="${INSTALL_ROOT}"
-  else
-    install_system_packages
-    install_node_pm2
-  fi
-
+  ensure_repo_ready
   run_install_pipeline
 }