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/holdings.json

@@ -0,0 +1,58 @@
+[
+  {
+    "ticker": "MSFT",
+    "quantity": 60,
+    "currentPrice": 496.82,
+    "marketValue": 29809.2,
+    "weight": 0.3028
+  },
+  {
+    "ticker": "CASH",
+    "quantity": 1,
+    "currentPrice": 25395.1,
+    "marketValue": 25395.1,
+    "weight": 0.258
+  },
+  {
+    "ticker": "GOOGL",
+    "quantity": 50,
+    "currentPrice": 278.83,
+    "marketValue": 13941.5,
+    "weight": 0.1416
+  },
+  {
+    "ticker": "META",
+    "quantity": 20,
+    "currentPrice": 621.71,
+    "marketValue": 12434.2,
+    "weight": 0.1263
+  },
+  {
+    "ticker": "AMZN",
+    "quantity": 40,
+    "currentPrice": 244.41,
+    "marketValue": 9776.4,
+    "weight": 0.0993
+  },
+  {
+    "ticker": "AAPL",
+    "quantity": 30,
+    "currentPrice": 268.47,
+    "marketValue": 8054.1,
+    "weight": 0.0818
+  },
+  {
+    "ticker": "TSLA",
+    "quantity": -15,
+    "currentPrice": 429.52,
+    "marketValue": -6442.8,
+    "weight": 0.0655
+  },
+  {
+    "ticker": "NVDA",
+    "quantity": 20,
+    "currentPrice": 188.15,
+    "marketValue": 3763.0,
+    "weight": 0.0382
+  }
+]