fix: CTP 连接后 locale 崩溃，PM2 设置 LANG=C.UTF-8

vnpy_ctp C++ 扩展在缺 locale 时会 terminate；补充 SimNow 备用前置说明。

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

ecosystem.config.cjs

@@ -11,6 +11,9 @@ module.exports = {
       max_memory_restart: "300M",
       env: {
         NODE_ENV: "production",
+        LANG: "C.UTF-8",
+        LC_ALL: "C.UTF-8",
+        LC_CTYPE: "C.UTF-8",
       },
       error_file: "/opt/qihuo/logs/pm2-error.log",
       out_file: "/opt/qihuo/logs/pm2-out.log",