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

Generated with [Claude Code](https://claude.ai/code)
via [Happy](https://happy.engineering)

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

strategies/kdj.py

@@ -12,7 +12,10 @@ class KDJStrategy(BaseStrategy):
     def _calculate_indicators(self, df):
         low_min = df['low'].rolling(self.period).min()
         high_max = df['high'].rolling(self.period).max()
-        rsv = (df['close'] - low_min) / (high_max - low_min) * 100
+        # 避免除零：当最高价==最低价时，RSV 取 50（中性）
+        price_range = high_max - low_min
+        rsv = (df['close'] - low_min) / price_range.replace(0, float('nan')) * 100
+        rsv = rsv.fillna(50)
         df['k'] = rsv.ewm(com=2).mean()
         df['d'] = df['k'].ewm(com=2).mean()
         df['j'] = 3 * df['k'] - 2 * df['d']