refactor(pet): 重构宠物模块实体与接口

1. 将原Pet实体重命名为UserPet，新增PetTemplate模板实体拆分宠物模板与实例数据
2. 调整IPetService泛型参数为IBaseService<UserPet>
3. 补充宠物模板相关字段与查询逻辑，完善创建默认宠物的流程
4. 替换所有Pet实体引用为UserPet，修正相关服务层查询与更新逻辑

QYZH.InteractiveMagazine.Models/Entity/UserPet.cs

@@ -0,0 +1,99 @@
+using SqlSugar;
+
+namespace QYZH.InteractiveMagazine.Models.Entity
+{
+    ///<summary>
+    ///用户宠物实例表
+    ///</summary>
+    [SugarTable("UserPet")]
+    public partial class UserPet : SqlSugarBaseEntity
+    {
+        public UserPet()
+        {
+
+
+        }
+        /// <summary>
+        /// Desc:用户Id
+        /// Default:
+        /// Nullable:False
+        /// </summary>           
+        public long UserId { get; set; }
+
+        /// <summary>
+        /// Desc:宠物模板Id（关联PetTemplate.Id）
+        /// Default:
+        /// Nullable:False
+        /// </summary>           
+        public long TemplateId { get; set; }
+
+        /// <summary>
+        /// Desc:宠物昵称
+        /// Default:
+        /// Nullable:True
+        /// </summary>           
+        public string Name { get; set; }
+
+        /// <summary>
+        /// Desc:当前进化形态Id
+        /// Default:
+        /// Nullable:False
+        /// </summary>           
+        public long CurrentEvolutionId { get; set; }
+
+        /// <summary>
+        /// Desc:当前成长值
+        /// Default:0
+        /// Nullable:False
+        /// </summary>           
+        public int GrowthPoints { get; set; }
+
+        /// <summary>
+        /// Desc:累计喂养次数
+        /// Default:0
+        /// Nullable:False
+        /// </summary>           
+        public int FeedingCount { get; set; }
+
+        /// <summary>
+        /// Desc:当前皮肤Id（0为默认皮肤）
+        /// Default:0
+        /// Nullable:False
+        /// </summary>           
+        public long CurrentSkinId { get; set; }
+
+        /// <summary>
+        /// Desc:宠物类型
+        /// Default:Normal
+        /// Nullable:False
+        /// </summary>           
+        public string Type { get; set; }
+
+        /// <summary>
+        /// Desc:状态: Inactive, Active, Sleeping
+        /// Default:Inactive
+        /// Nullable:False
+        /// </summary>           
+        public new string Status { get; set; }
+
+        /// <summary>
+        /// 理解力
+        /// </summary>
+        public int Comprehension { get; set; }
+
+        /// <summary>
+        /// 判断力
+        /// </summary>
+        public int Judgment { get; set; }
+
+        /// <summary>
+        /// 表达力
+        /// </summary>
+        public int Expression { get; set; }
+
+        /// <summary>
+        /// 说服力
+        /// </summary>
+        public int Persuasiveness { get; set; }
+    }
+}