中控增加下单，关键位，系统设置

manual_trading_hub/scripts/run_agent.sh

@@ -4,10 +4,12 @@ set -e
 set -o pipefail
 
 HUB_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+# shellcheck source=lib_load_dotenv.sh
+source "${HUB_DIR}/scripts/lib_load_dotenv.sh"
+
 VENV_PY="${HUB_DIR}/.venv/bin/python"
 AGENT_PY="${HUB_DIR}/agent.py"
 
-# PM2 ecosystem 注入，须在 source .env 之后再次强制（避免 .env 覆盖 PORT/EXCHANGE）
 _PM2_EXCHANGE="${EXCHANGE:-}"
 _PM2_PORT="${PORT:-}"
 _PM2_HOST="${HOST:-}"
@@ -18,10 +20,10 @@ if [[ ! -x "${VENV_PY}" ]]; then
 fi
 
 if [[ -f .env ]]; then
-  set -a
-  # shellcheck disable=SC1091
-  . ./.env
-  set +a
+  if ! load_dotenv_file ".env"; then
+    echo "错误: $(pwd)/.env 加载失败" >&2
+    exit 1
+  fi
 else
   echo "警告: $(pwd) 下无 .env，agent 可能缺少 API 密钥" >&2
 fi
@@ -30,5 +32,12 @@ fi
 [[ -n "${_PM2_PORT}" ]] && export PORT="${_PM2_PORT}"
 [[ -n "${_PM2_HOST}" ]] && export HOST="${_PM2_HOST}"
 
+if command -v ss >/dev/null 2>&1 && [[ -n "${PORT:-}" ]]; then
+  if ss -tln 2>/dev/null | grep -q ":${PORT} "; then
+    echo "错误: 端口 ${PORT} 已被占用，agent 无法监听（exchange=${EXCHANGE:-?}）" >&2
+    exit 1
+  fi
+fi
+
 echo "agent start: exchange=${EXCHANGE:-?} port=${PORT:-?} cwd=$(pwd)" >&2
 exec "${VENV_PY}" "${AGENT_PY}"