fix: 修复 VeighNa 模块加载问题

- 修改 main_service.py 使用正确的 gateway 导入路径
- 添加 try/except 处理 gateway 导入失败的情况
- 更新 requirements-docker.txt 添加 gateway 包说明

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

requirements-docker.txt

@@ -20,6 +20,13 @@ nbformat>=5.10.4
 requests>=2.32.0
 qrcode>=7.4.2
 
+# VeighNa Gateway 扩展（可选，根据需要安装）
+# 注意：这些是独立的扩展包，未安装时不影响核心功能
+# vnpy_ctp
+# vnpy_ib
+# vnpy_okx
+# vnpy_binance
+
 # ============================================
 # Web 服务依赖
 # ============================================

sanguo_web/services/main_service.py

@@ -21,10 +21,23 @@ try:
     )
     from vnpy.trader.constant import Exchange, Direction, OrderType, Offset
     from vnpy.trader.setting import SETTINGS
-    from vnpy.gateway.ctp import CtpGateway
-    from vnpy.gateway.ib import IbGateway
-    from vnpy.gateway.okx import OkxGateway
-    from vnpy.gateway.binance import BinanceGateway
+    # Gateway modules are imported as independent packages
+    try:
+        from vnpy_ctp import CtpGateway
+    except ImportError:
+        CtpGateway = None
+    try:
+        from vnpy_ib import IbGateway
+    except ImportError:
+        IbGateway = None
+    try:
+        from vnpy_okx import OkxGateway
+    except ImportError:
+        OkxGateway = None
+    try:
+        from vnpy_binance import BinanceGateway
+    except ImportError:
+        BinanceGateway = None
     VNPY_AVAILABLE = True
 except ImportError:
     VNPY_AVAILABLE = False
@@ -78,11 +91,15 @@ class VeighNaService:
                         # 创建主引擎
                         main_engine = MainEngine(event_engine)
 
-                        # 添加网关
-                        main_engine.add_gateway(CtpGateway)
-                        main_engine.add_gateway(IbGateway)
-                        main_engine.add_gateway(OkxGateway)
-                        main_engine.add_gateway(BinanceGateway)
+                        # 添加网关（仅添加已安装的）
+                        if CtpGateway:
+                            main_engine.add_gateway(CtpGateway)
+                        if IbGateway:
+                            main_engine.add_gateway(IbGateway)
+                        if OkxGateway:
+                            main_engine.add_gateway(OkxGateway)
+                        if BinanceGateway:
+                            main_engine.add_gateway(BinanceGateway)
 
                         return main_engine, event_engine