feat: AI市场分析功能

- 后端：AI分析服务、工具调用、定时任务
- 前端：报告列表、详情页、Mermaid图表支持
- 支持OpenAI API兼容模型
- 收盘后自动分析生成报告

package.json

@@ -51,10 +51,12 @@
     "input-otp": "^1.4.2",
     "lightweight-charts": "^5.2.1",
     "lucide-react": "^0.575.0",
+    "mermaid": "^11.17.2",
     "react": "^19.2.7",
     "react-day-picker": "^9.14.0",
     "react-dom": "^19.2.7",
     "react-hook-form": "^7.81.0",
+    "react-markdown": "^10.1.0",
     "react-resizable-panels": "^4.12.1",
     "recharts": "^2.15.4",
     "sonner": "^2.0.7",