模拟盘无 API Key 时复盘K线改为优先走 OKX 公开行情接口。

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

lib/sim/broker_lib.py

@@ -12,7 +12,19 @@ from lib.sim.wallets_lib import InsufficientFunds, SimWallets
 
 
 def _now() -> str:
-    return datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S")
+    """业务时区墙钟(默认 Asia/Shanghai);勿用 utcnow,否则复盘K线标记会偏 8 小时."""
+    try:
+        from lib.options.options_time_lib import options_app_now_str
+
+        return options_app_now_str()
+    except Exception:
+        from zoneinfo import ZoneInfo
+
+        tz = ZoneInfo(
+            (os.getenv("APP_TIMEZONE") or os.getenv("TZ") or "Asia/Shanghai").strip()
+            or "Asia/Shanghai"
+        )
+        return datetime.now(tz).strftime("%Y-%m-%d %H:%M:%S")
 
 
 def _ticker_bid_ask(exchange: Any, symbol: str) -> tuple[float, float]: