feat: 优化代码生成器功能并修复多个问题

- 前端表格列添加溢出提示工具
- 后端登录IP归属地查询与设置统一处理
- 分页服务明确仅用于非SQL数据源场景
- 代码生成器添加字段筛选和帮助面板
- 修复菜单高亮和布局切换问题
- 更新文档中的BUG状态和解决方案
- 优化AI聊天界面样式和交互
- 添加数据库分页支持到多个模块
- 代码生成器表单校验和流程优化
- 修复PostgreSQL日期类型问题

backend/app/api/v1/module_system/user/controller.py

@@ -6,7 +6,6 @@ from fastapi.responses import JSONResponse, StreamingResponse
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from app.api.v1.module_system.auth.schema import AuthSchema
-from app.common.request import PaginationService
 from app.common.response import ResponseSchema, StreamResponse, SuccessResponse
 from app.core.base_params import PaginationQueryParam
 from app.core.base_schema import BatchSetAvailable
@@ -225,13 +224,12 @@ async def get_obj_list_controller(
     返回:
     - JSONResponse: 分页查询结果JSON响应
     """
-    result_dict_list = await UserService.get_user_list_service(
-        search=search, auth=auth, order_by=page.order_by
-    )
-    result_dict = await PaginationService.paginate(
-        data_list=result_dict_list,
+    result_dict = await UserService.get_user_page_service(
+        auth=auth,
         page_no=page.page_no,
         page_size=page.page_size,
+        search=search,
+        order_by=page.order_by,
     )
     log.info("查询用户成功")
     return SuccessResponse(data=result_dict, msg="查询用户成功")

backend/app/api/v1/module_system/user/service.py

@@ -86,6 +86,25 @@ class UserService:
 
         return user_dict_list
 
+    @classmethod
+    async def get_user_page_service(
+        cls,
+        auth: AuthSchema,
+        page_no: int,
+        page_size: int,
+        search: UserQueryParam | None = None,
+        order_by: list[dict[str, str]] | None = None,
+    ) -> dict:
+        """分页查询用户（数据库 OFFSET/LIMIT）。"""
+        offset = (page_no - 1) * page_size
+        return await UserCRUD(auth).page(
+            offset=offset,
+            limit=page_size,
+            order_by=order_by or [{"id": "asc"}],
+            search=search.__dict__ if search else {},
+            out_schema=UserOutSchema,
+        )
+
     @classmethod
     async def create_user_service(cls, data: UserCreateSchema, auth: AuthSchema) -> dict:
         """