chore: initial commit — leaudit-platform project skeleton

17-table PostgreSQL schema with full Chinese column comments,
FastAPI project structure (admin/common/modules),
DSL rule files, and schema migration scripts.

fastapi_common/fastapi_common_web/domain/responses.py

@@ -0,0 +1,57 @@
+"""统一响应格式。"""
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+from enum import Enum
+from typing import Any, Generic, TypeVar
+
+T = TypeVar("T")
+
+
+class StatusCodeEnum(Enum):
+    """HTTP 状态码枚举。"""
+
+    HTTP_200_OK = 200
+    HTTP_201_CREATED = 201
+    HTTP_400_BAD_REQUEST = 400
+    HTTP_401_UNAUTHORIZED = 401
+    HTTP_403_FORBIDDEN = 403
+    HTTP_404_NOT_FOUND = 404
+    HTTP_409_CONFLICT = 409
+    HTTP_422_UNPROCESSABLE_ENTITY = 422
+    HTTP_500_INTERNAL_SERVER_ERROR = 500
+
+
+@dataclass
+class PaginationInfo:
+    """分页信息。"""
+
+    total: int
+    page: int
+    pageSize: int
+
+
+@dataclass
+class PageResult(Generic[T]):
+    """分页结果。"""
+
+    list: list[T]
+    pagination: PaginationInfo
+
+
+@dataclass
+class Result(Generic[T]):
+    """统一响应。"""
+
+    code: int
+    message: str
+    data: T | None = None
+
+    @classmethod
+    def success(cls, data: T | None = None, message: str = "ok") -> "Result[T]":
+        return cls(code=200, message=message, data=data)
+
+    @classmethod
+    def error(cls, status: StatusCodeEnum, message: str | None = None) -> "Result[None]":
+        return cls(code=status.value, message=message or status.name, data=None)