feat: 完成宠物模块重构与社区功能开发

本次提交包含多项核心更新：
1.  重构宠物模块数据结构：拆分皮肤图片为独立表，优化Pet、PetEvolution实体，调整字段类型与冗余字段
2.  新增宠物皮肤图片管理表，支持多进化阶段多图片展示
3.  完善宠物DTO，新增当前形态名称、皮肤信息与图片序列返回
4.  新增社区功能模块：
    - 微信端社区Feed流、点赞/取消点赞接口
    - 后台社区消息管理接口与服务实现
5.  优化商城与背包模块，替换皮肤图片获取逻辑为从新表读取预览图
6.  重构勋章服务，新增规则校验逻辑
7.  调整命名规范，修复原有控制器命名问题

QYZH.InteractiveMagazine.Models/Dto/Bag/UserBagDto.cs

@@ -41,8 +41,12 @@ public class BagSkinBrief
 {
     public long SkinId { get; set; }
     public string SkinName { get; set; } = string.Empty;
-    public string? SkinImage { get; set; }
     public string Rarity { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 皮肤预览图（取第一张图片）
+    /// </summary>
+    public string? PreviewImage { get; set; }
 }
 
 /// <summary>

QYZH.InteractiveMagazine.Models/Dto/Community/CommunityDto.cs

@@ -0,0 +1,288 @@
+namespace QYZH.InteractiveMagazine.Models.Dto;
+
+#region 后台管理 DTO
+
+/// <summary>
+/// 社区消息分页查询输入（后台）
+/// </summary>
+public class AdminMessageQueryInput : PageQueryModel
+{
+    /// <summary>
+    /// 期刊ID
+    /// </summary>
+    public long? JournalId { get; set; }
+
+    /// <summary>
+    /// 消息类型: Article, Quote, Announcement
+    /// </summary>
+    public string? Type { get; set; }
+
+    /// <summary>
+    /// 状态: 0=审核中, 1=已通过, 2=已冻结
+    /// </summary>
+    public int? Status { get; set; }
+
+    /// <summary>
+    /// 是否精选: 0=否, 1=是
+    /// </summary>
+    public int? IsFeatured { get; set; }
+
+    /// <summary>
+    /// 是否启用
+    /// </summary>
+    public bool? IsActive { get; set; }
+
+    /// <summary>
+    /// 内容关键词（模糊查询）
+    /// </summary>
+    public string? Keyword { get; set; }
+
+    /// <summary>
+    /// 用户ID
+    /// </summary>
+    public long? UserId { get; set; }
+}
+
+/// <summary>
+/// 社区消息详情输出（后台）
+/// </summary>
+public class AdminMessageDetailOutput
+{
+    /// <summary>
+    /// 主键ID
+    /// </summary>
+    public long Id { get; set; }
+
+    /// <summary>
+    /// 期刊ID
+    /// </summary>
+    public long JournalId { get; set; }
+
+    /// <summary>
+    /// 用户ID
+    /// </summary>
+    public long UserId { get; set; }
+
+    /// <summary>
+    /// 用户实例期刊ID
+    /// </summary>
+    public long UserJournalId { get; set; }
+
+    /// <summary>
+    /// 期刊任务ID
+    /// </summary>
+    public long JournalTaskId { get; set; }
+
+    /// <summary>
+    /// 用户期刊任务回答ID
+    /// </summary>
+    public long JournalTaskAnswerId { get; set; }
+
+    /// <summary>
+    /// 消息内容
+    /// </summary>
+    public string Content { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 配图
+    /// </summary>
+    public string? ImageUrl { get; set; }
+
+    /// <summary>
+    /// 排序权重
+    /// </summary>
+    public int SortOrder { get; set; }
+
+    /// <summary>
+    /// 是否启用
+    /// </summary>
+    public bool IsActive { get; set; }
+
+    /// <summary>
+    /// 消息类型
+    /// </summary>
+    public string Type { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 点赞数
+    /// </summary>
+    public int LikeCount { get; set; }
+
+    /// <summary>
+    /// 是否精选
+    /// </summary>
+    public int IsFeatured { get; set; }
+
+    /// <summary>
+    /// 状态: 0=审核中, 1=已通过, 2=已冻结
+    /// </summary>
+    public int Status { get; set; }
+
+    /// <summary>
+    /// 创建人
+    /// </summary>
+    public string? CreatedBy { get; set; }
+
+    /// <summary>
+    /// 创建时间
+    /// </summary>
+    public DateTime CreatedAt { get; set; }
+
+    /// <summary>
+    /// 更新人
+    /// </summary>
+    public string? UpdatedBy { get; set; }
+
+    /// <summary>
+    /// 更新时间
+    /// </summary>
+    public DateTime? UpdatedAt { get; set; }
+}
+
+/// <summary>
+/// 设置精选入参
+/// </summary>
+public class AdminSetFeaturedInput
+{
+    /// <summary>
+    /// 是否精选: 0=否, 1=是
+    /// </summary>
+    public int IsFeatured { get; set; }
+}
+
+/// <summary>
+/// 设置排序权重入参
+/// </summary>
+public class AdminSetSortOrderInput
+{
+    /// <summary>
+    /// 排序权重
+    /// </summary>
+    public int SortOrder { get; set; }
+}
+
+/// <summary>
+/// 冻结/解冻入参
+/// </summary>
+public class AdminFreezeInput
+{
+    /// <summary>
+    /// 状态: 1=解冻(通过), 2=冻结
+    /// </summary>
+    public int Status { get; set; }
+}
+
+#endregion
+
+#region 微信端 DTO
+
+/// <summary>
+/// 微信端社区Feed消息输出
+/// </summary>
+public class WxFeedMessageOutput
+{
+    /// <summary>
+    /// 消息ID
+    /// </summary>
+    public long Id { get; set; }
+
+    /// <summary>
+    /// 期刊ID
+    /// </summary>
+    public long JournalId { get; set; }
+
+    /// <summary>
+    /// 作者用户ID
+    /// </summary>
+    public long UserId { get; set; }
+
+    /// <summary>
+    /// 消息内容
+    /// </summary>
+    public string Content { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 配图
+    /// </summary>
+    public string? ImageUrl { get; set; }
+
+    /// <summary>
+    /// 消息类型
+    /// </summary>
+    public string Type { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 点赞数
+    /// </summary>
+    public int LikeCount { get; set; }
+
+    /// <summary>
+    /// 是否精选
+    /// </summary>
+    public int IsFeatured { get; set; }
+
+    /// <summary>
+    /// 当前用户是否已点赞
+    /// </summary>
+    public bool IsLiked { get; set; }
+
+    /// <summary>
+    /// 创建时间
+    /// </summary>
+    public DateTime CreatedAt { get; set; }
+}
+
+/// <summary>
+/// 微信端社区Feed输出（含游标）
+/// </summary>
+public class WxFeedOutput
+{
+    /// <summary>
+    /// 消息列表
+    /// </summary>
+    public List<WxFeedMessageOutput> Messages { get; set; } = new();
+
+    /// <summary>
+    /// 下一页游标（为null表示没有更多数据）
+    /// </summary>
+    public long? NextCursor { get; set; }
+
+    /// <summary>
+    /// 是否还有更多数据
+    /// </summary>
+    public bool HasMore { get; set; }
+}
+
+/// <summary>
+/// 微信端点赞入参
+/// </summary>
+public class WxLikeInput
+{
+    /// <summary>
+    /// 消息ID
+    /// </summary>
+    public long MessageId { get; set; }
+}
+
+/// <summary>
+/// 微信端点赞输出
+/// </summary>
+public class WxLikeOutput
+{
+    /// <summary>
+    /// 消息ID
+    /// </summary>
+    public long MessageId { get; set; }
+
+    /// <summary>
+    /// 当前点赞数
+    /// </summary>
+    public int LikeCount { get; set; }
+
+    /// <summary>
+    /// 是否已点赞
+    /// </summary>
+    public bool IsLiked { get; set; }
+}
+
+#endregion

QYZH.InteractiveMagazine.Models/Dto/Mall/WxMallDto.cs

@@ -30,9 +30,13 @@ public class PetSkinBrief
 {
     public long SkinId { get; set; }
     public string SkinName { get; set; } = string.Empty;
-    public string? SkinImage { get; set; }
     public string? Description { get; set; }
     public string Rarity { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 皮肤预览图（取当前进化阶段第一张图片）
+    /// </summary>
+    public string? PreviewImage { get; set; }
 }
 
 /// <summary>

QYZH.InteractiveMagazine.Models/Dto/Pet/PetDto.cs

@@ -23,7 +23,12 @@ public class PetOutput
     /// <summary>
     /// 当前进化形态Id
     /// </summary>
-    public int CurrentEvolutionId { get; set; }
+    public long CurrentEvolutionId { get; set; }
+
+    /// <summary>
+    /// 当前进化阶段名称
+    /// </summary>
+    public string? EvolutionStageName { get; set; }
 
     /// <summary>
     /// 当前成长值
@@ -35,6 +40,21 @@ public class PetOutput
     /// </summary>
     public int FeedingCount { get; set; }
 
+    /// <summary>
+    /// 当前皮肤Id
+    /// </summary>
+    public long CurrentSkinId { get; set; }
+
+    /// <summary>
+    /// 当前皮肤名称
+    /// </summary>
+    public string? CurrentSkinName { get; set; }
+
+    /// <summary>
+    /// 当前形态+当前皮肤 的图片列表（按SortOrder排序）
+    /// </summary>
+    public List<SkinImageOutput> CurrentImages { get; set; } = new();
+
     /// <summary>
     /// 宠物类型: Normal
     /// </summary>
@@ -51,6 +71,27 @@ public class PetOutput
     public DateTime CreatedAt { get; set; }
 }
 
+/// <summary>
+/// 皮肤图片输出
+/// </summary>
+public class SkinImageOutput
+{
+    /// <summary>
+    /// 图片Id
+    /// </summary>
+    public long Id { get; set; }
+
+    /// <summary>
+    /// 图片地址
+    /// </summary>
+    public string ImageUrl { get; set; } = string.Empty;
+
+    /// <summary>
+    /// 图片顺序
+    /// </summary>
+    public int SortOrder { get; set; }
+}
+
 /// <summary>
 /// 喂养宠物输入
 /// </summary>