重构作业结构：优化实体模型、DTO映射和前端界面

- 重构AppMainStruct、AssignmentQuestion、Question等实体模型
- 更新相关DTO以匹配新的数据结构
- 优化前端页面布局和组件
- 添加全局信息和笔记功能相关代码
- 更新数据库迁移和程序配置

TechHelper.Client/Pages/Global/LoginInOut/LoginInOut.razor

@@ -0,0 +1,32 @@
+@using Microsoft.AspNetCore.Components.WebAssembly.Authentication
+@inject NavigationManager Navigation
+@inject IAuthenticationClientService AuthenticationClientService
+
+<AuthorizeView>
+	<Authorized>
+		<MudText>
+			Hello, @context.User.Identity.Name!
+		</MudText>
+		<MudButton OnClick="Logout"> LOGOUT </MudButton>
+	</Authorized>
+	<NotAuthorized>
+		<MudButton Class="" Href="Login"> Login </MudButton>
+	</NotAuthorized>
+</AuthorizeView>
+
+@code {
+	[CascadingParameter]
+	private Task<AuthenticationState> authenticationStateTask { get; set; }
+
+	private async Task Logout()
+	{
+		await AuthenticationClientService.LogoutAsync();
+		Navigation.NavigateTo("/");
+	}
+
+	private void LoginIN()
+	{
+		Navigation.NavigateToLogin("/login");
+	}
+
+}