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/lib/install.sh

@@ -22,6 +22,7 @@ run_pipeline() {
 
 install_fresh() {
   require_root
+  step "一键部署 — 环境检测与依赖"
   ensure_system_deps
   step "克隆仓库 → ${INSTALL_ROOT}"
   if [[ -d "${INSTALL_ROOT}" ]]; then
@@ -34,6 +35,7 @@ install_fresh() {
 
 install_repair() {
   require_root
+  step "修复部署 — 环境检测与依赖"
   ensure_system_deps
   if ! REPO_ROOT="$(resolve_repo_root)"; then
     die "未找到安装目录 ${INSTALL_ROOT}"