refactor,feat: 批量代码重构与新增业务模块

1. 重命名枚举项与实体字段，修正类型引用
2. 新增IsNull扩展方法与多项字符串处理扩展
3. 新增大量业务DTO、服务接口与枚举定义
4. 重构RabbitMQ服务实现，替换旧版消息队列组件
5. 优化签到服务的宠物喂养事务逻辑
6. 移除冗余的项目引用与旧版消息队列代码
7. 新增Excel导出、导入模板相关工具方法

QYZH.InteractiveMagazine.Models/Dto/Journal/BindJournalDto.cs

@@ -0,0 +1,81 @@
+using QYZH.InteractiveMagazine.Models.Enum;
+
+namespace QYZH.InteractiveMagazine.Models.Dto;
+
+/// <summary>
+/// 绑定期刊输入DTO
+/// </summary>
+public class BindJournalInput
+{
+    /// <summary>
+    /// 期刊模板Id（扫码解析的期刊定义Id）
+    /// </summary>
+    public long JournalId { get; set; }
+
+    /// <summary>
+    /// 实例化期刊Id（扫码解析的具体期刊实例Id，可选）
+    /// </summary>
+    public long Id { get; set; }
+
+    /// <summary>
+    /// 关联类型: Read(已读), Favorite(收藏), Subscribe(订阅)，默认 Subscribe
+    /// </summary>
+    public string Type { get; set; } = UserJournalTypeEnum.Subscribe.ToString();
+}
+
+/// <summary>
+/// 绑定期刊输出DTO
+/// </summary>
+public class BindJournalOutput
+{
+    /// <summary>
+    /// 绑定记录Id
+    /// </summary>
+    public long Id { get; set; }
+
+    /// <summary>
+    /// 用户Id
+    /// </summary>
+    public long UserId { get; set; }
+
+    /// <summary>
+    /// 期刊模板Id
+    /// </summary>
+    public long JournalId { get; set; }
+
+    /// <summary>
+    /// 关联类型
+    /// </summary>
+    public string Type { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 状态
+    /// </summary>
+    public string Status { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 绑定时间
+    /// </summary>
+    public DateTime CreatedAt { get; set; }
+}
+
+/// <summary>
+/// 用户期刊关联查询输入DTO
+/// </summary>
+public class UserJournalQueryInput : PageQueryModel
+{
+    /// <summary>
+    /// 期刊模板Id
+    /// </summary>
+    public long? JournalId { get; set; }
+
+    /// <summary>
+    /// 实例化期刊Id
+    /// </summary>
+    public long Id { get; set; }    
+
+    /// <summary>
+    /// 关联类型: Read, Favorite, Subscribe
+    /// </summary>
+    public string? Type { get; set; }
+}