first commit

backend/F9WebAiTest.Domain/Entities/RoleMenu.cs

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+using FreeSql.DataAnnotations;
+using F9WebAiTest.Domain.Common;
+
+namespace F9WebAiTest.Domain.Entities;
+
+/// <summary>角色-菜单 关联</summary>
+[Table(Name = "RoleMenus")]
+[Index("IX_RoleMenus_RoleId_MenuId", "RoleId, MenuId", IsUnique = true)]
+public class RoleMenu : BaseEntity
+{
+    public long RoleId { get; set; }
+    public long MenuId { get; set; }
+}