Detect Python/Node/PM2 on deploy (install only if missing); uninstall removes /opt/eth_hedge_sim.

Keep .env and DB backup under /root/backups before deleting the install directory.

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

deploy/pull_and_restart.sh

@@ -8,6 +8,13 @@ set -euo pipefail
 ROOT="$(cd "$(dirname "$0")/.." && pwd)"
 cd "$ROOT"
 
+# 有 root 时：检测 Python / Node / PM2，缺则装、有则跳过
+if [[ -f "$ROOT/deploy/lib/common.sh" ]] && [[ "$(id -u)" -eq 0 ]]; then
+  # shellcheck source=lib/common.sh
+  source "$ROOT/deploy/lib/common.sh"
+  ensure_system_deps
+fi
+
 echo "[比特骆驼] pull @ $ROOT"
 if [[ -d "$ROOT/.git" ]]; then
   git fetch --all --prune
@@ -25,7 +32,13 @@ if [[ ! -f "$ROOT/.env" ]]; then
   echo "[比特骆驼] wrote .env — please review AUTH_* secrets"
 fi
 
+if ! command -v python3 >/dev/null 2>&1; then
+  echo "ERROR: python3 not found. 请用 manage.sh 一键部署自动安装。"
+  exit 1
+fi
+
 if [[ ! -d "$ROOT/.venv" ]]; then
+  echo "[比特骆驼] create venv"
   python3 -m venv "$ROOT/.venv"
 fi
 # shellcheck disable=SC1091
@@ -45,7 +58,10 @@ fi
 )
 
 if ! command -v pm2 >/dev/null 2>&1; then
+  echo "[比特骆驼] install pm2"
   npm install -g pm2
+else
+  echo "[比特骆驼] pm2 already present, skip install"
 fi
 
 # 仅 reload 本项目进程，禁止 pm2 restart all