```

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/modules/legacy_mysql/schemas.py

@@ -0,0 +1,54 @@
+from typing import Any
+
+from pydantic import BaseModel, Field
+
+
+class ReadonlyQueryRequest(BaseModel):
+    """Readonly SQL query request for the legacy MySQL connection."""
+
+    sql: str = Field(..., description="Readonly SELECT statement.")
+    params: dict[str, Any] = Field(default_factory=dict)
+    limit: int = Field(default=100, ge=1, le=500)
+
+
+class QueryResult(BaseModel):
+    """Tabular query result returned as JSON rows."""
+
+    columns: list[str]
+    rows: list[dict[str, Any]]
+    row_count: int
+
+
+class LegacyProjectRecord(BaseModel):
+    """Raw project row from the legacy project system."""
+
+    data: dict[str, Any]
+
+
+class LegacyProjectSyncRequest(BaseModel):
+    """Request body for syncing legacy projects into the internal ledger."""
+
+    source_query: str | None = Field(
+        default=None,
+        description="Optional SELECT query for project sync.",
+    )
+    field_map: dict[str, str] = Field(
+        default_factory=dict,
+        description=(
+            "Map internal project fields to legacy row fields, "
+            "e.g. {'name': 'project_name'}."
+        ),
+    )
+    limit: int = Field(default=100, ge=1, le=500)
+    dry_run: bool = True
+    actor: str = "api"
+
+
+class LegacyProjectSyncResult(BaseModel):
+    """Summary of a legacy project sync operation."""
+
+    dry_run: bool
+    created: int
+    updated: int
+    skipped: int
+    items: list[dict[str, Any]]