重构项目架构，新增 MT5 代理服务

- 重构核心模块：DataProvider 依赖注入、RiskController 门面、信号注册表
- 新增 FastAPI 代理服务 (run/server.py)，支持局域网远程调用 MT5
- 新增 RemoteDataProvider + AttrDict，远端无缝替代 LiveDataProvider
- 新增序列化模块，MT5 对象转 JSON 兼容格式
- 重构入口点至 run/ 包，支持 python -m run.realtime/server/backtest/optimize
- 更新 CLAUDE.md 文档

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Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: Happy <yesreply@happy.engineering>

run/realtime.py

@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+"""实时交易入口 — python -m run.realtime"""
+
+import sys
+import os
+from datetime import datetime
+
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+from execution.realtime_trader import RealtimeTrader
+from core.data import LiveDataProvider, DryRunDataProvider
+from config import REALTIME_CONFIG, INITIAL_CAPITAL
+from logger import setup_logger
+
+
+def main():
+    log_level = REALTIME_CONFIG.get('logging_level', 'INFO')
+    setup_logger(log_level)
+
+    is_dry_run = REALTIME_CONFIG.get('dry_run', True)
+
+    print("=" * 60)
+    print("MT5 智能交易系统 - 实时交易")
+    print(f"启动时间: {datetime.now().strftime('%Y-%m-%d %H:%M:%S')}")
+    print(f"运行模式: {'模拟运行' if is_dry_run else '实盘交易'}")
+    print("=" * 60)
+
+    if is_dry_run:
+        data_provider = DryRunDataProvider(initial_equity=INITIAL_CAPITAL)
+    else:
+        print("WARNING: 即将启动实盘交易模式！")
+        confirm = input("确认启动实盘交易？(输入 'YES' 继续): ")
+        if confirm != 'YES':
+            print("已取消启动。")
+            return
+        data_provider = LiveDataProvider()
+
+    trader = RealtimeTrader(data_provider, update_interval=REALTIME_CONFIG['update_interval'])
+    print("\n正在启动交易系统... (按 Ctrl+C 可安全停止)")
+    trader.start()
+
+
+if __name__ == "__main__":
+    main()