feat: initial commit - EvoTraders project

量化交易多智能体系统，包含：
- 分析师、投资组合经理、风险经理等智能体
- 股票分析、投资组合管理、风险控制工具
- React 前端界面
- FastAPI 后端服务

Co-Authored-By: Claude <noreply@anthropic.com>

backtest/team_dashboard/stats.json

@@ -0,0 +1,18 @@
+{
+  "totalAssetValue": 98434.93,
+  "totalReturn": -1.57,
+  "cashPosition": 25395.1,
+  "tickerWeights": {},
+  "totalTrades": 14,
+  "winRate": 0.0,
+  "bullBear": {
+    "bull": {
+      "n": 0,
+      "win": 0
+    },
+    "bear": {
+      "n": 0,
+      "win": 0
+    }
+  }
+}