```

feat: 添加公司AI管理平台基础架构

添加了完整的FastAPI后端项目结构，包括：
- 环境配置文件(.env.example)和项目说明文档(README.md、AGENTS.md)
- Dockerfile用于容器化部署
- 核心基础设施：配置管理、数据库连接、调度器、安全认证
- 模块化设计：AI代理、审批流程、审计日志、业务台账等功能模块
- 支持多数据库连接(主库和遗留系统只读库)
- AI适配器支持OpenClaw、Hermes、OpenAI兼容接口
- 飞书集成、报表生成、风险监控等企业级功能
- 完整的依赖管理和测试指南
```

app/api/__init__.py

@@ -0,0 +1 @@
+"""API package."""

app/api/router.py

@@ -0,0 +1,29 @@
+from fastapi import APIRouter
+
+from app.modules.ai_agent.routes import router as ai_router
+from app.modules.approvals.routes import router as approvals_router
+from app.modules.audit.routes import router as audit_router
+from app.modules.business.routes import router as business_router
+from app.modules.feishu.routes import router as feishu_router
+from app.modules.legacy_mysql.routes import router as legacy_mysql_router
+from app.modules.reports.routes import router as reports_router
+from app.modules.risk.routes import router as risk_router
+
+api_router = APIRouter()
+
+
+@api_router.get("/health", tags=["system"])
+def health_check() -> dict[str, str]:
+    """Return basic API health status."""
+
+    return {"status": "ok"}
+
+
+api_router.include_router(business_router, prefix="/business", tags=["business"])
+api_router.include_router(legacy_mysql_router, prefix="/integrations/mysql", tags=["mysql"])
+api_router.include_router(feishu_router, prefix="/integrations/feishu", tags=["feishu"])
+api_router.include_router(ai_router, prefix="/ai", tags=["ai"])
+api_router.include_router(approvals_router, prefix="/approvals", tags=["approvals"])
+api_router.include_router(reports_router, prefix="/reports", tags=["reports"])
+api_router.include_router(risk_router, prefix="/risks", tags=["risks"])
+api_router.include_router(audit_router, prefix="/audit", tags=["audit"])