feat: 完成多模块功能迭代与优化

1.  新增宠物皮肤初始枚举值、下拉列表接口及相关DTO
2.  完善商品实体与DTO，新增虚拟商品标记和类型ID字段
3.  重构用户认证体系，支持多用户切换并重新生成JWT令牌
4.  新增签到配置管理全套功能，包括增删改查和状态管理
5.  优化模型验证过滤器和基础响应类的命名规范
6.  新增补签功能，完善签到服务逻辑
7.  拆分用户详情DTO，新增各子数据分页查询接口
8.  重构微信控制器的用户ID获取逻辑，统一使用激活用户ID
9.  修复背包服务中补签卡的扣减逻辑
10. 新增家长姓名修改接口和相关服务实现

QYZH.InteractiveMagazine.Infrastructure/Auth/JwtHelper.cs

@@ -12,7 +12,7 @@ namespace QYZH.InteractiveMagazine.Infrastructure.Auth;
 public static class JwtHelper
 {
     /// <summary>
-    /// 生成JWT令牌
+    /// 生成JWT令牌（管理端 / 单用户场景）
     /// </summary>
     /// <param name="userId">用户ID</param>
     /// <param name="userName">用户名</param>
@@ -29,6 +29,39 @@ public static class JwtHelper
             new Claim(ClaimTypes.Name, userName)
         };
 
+        return BuildToken(claims, settings);
+    }
+
+    /// <summary>
+    /// 生成JWT令牌（小程序场景，同时携带 WxUserId 和 UserId）
+    /// </summary>
+    /// <param name="wxUserId">微信用户ID（WxUser.Id）</param>
+    /// <param name="userId">当前激活用户ID（Users.Id，无用户时为 0）</param>
+    /// <param name="userName">用户名</param>
+    /// <param name="settings">JWT配置</param>
+    /// <returns>JWT令牌字符串</returns>
+    public static string GenerateToken(long wxUserId, long userId, string userName, JwtSettings settings)
+    {
+        var claims = new[]
+        {
+            new Claim(JwtRegisteredClaimNames.Sub, userId.ToString()),
+            new Claim(JwtRegisteredClaimNames.Name, userName),
+            new Claim(JwtRegisteredClaimNames.Jti, Guid.NewGuid().ToString()),
+            new Claim(ClaimTypes.NameIdentifier, userId.ToString()),
+            new Claim(ClaimTypes.Name, userName),
+            new Claim(WxUserIdClaimType, wxUserId.ToString())
+        };
+
+        return BuildToken(claims, settings);
+    }
+
+    /// <summary>
+    /// 自定义 Claim 类型：WxUserId
+    /// </summary>
+    public const string WxUserIdClaimType = "WxUserId";
+
+    private static string BuildToken(Claim[] claims, JwtSettings settings)
+    {
         var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(settings.SecretKey!));
         var credentials = new SigningCredentials(key, SecurityAlgorithms.HmacSha256);
 
@@ -77,6 +110,25 @@ public static class JwtHelper
         return null;
     }
 
+    /// <summary>
+    /// 从Token中获取微信用户ID（WxUserId）
+    /// </summary>
+    /// <param name="token">JWT令牌</param>
+    /// <returns>WxUserId</returns>
+    public static long? GetWxUserIdFromToken(string token)
+    {
+        var tokenHandler = new JwtSecurityTokenHandler();
+        if (tokenHandler.ReadToken(token) is JwtSecurityToken jwtToken)
+        {
+            var wxUserIdClaim = jwtToken.Claims.FirstOrDefault(c => c.Type == WxUserIdClaimType);
+            if (long.TryParse(wxUserIdClaim?.Value, out long wxUserId))
+            {
+                return wxUserId;
+            }
+        }
+        return null;
+    }
+
     /// <summary>
     /// 从Token中获取用户名
     /// </summary>

QYZH.InteractiveMagazine.Infrastructure/Middleware/ModelValidActionFilter.cs

@@ -24,10 +24,10 @@ public class ModelValidActionFilterAttribute : ActionFilterAttribute
                     errorDic.Add(key, errorStr);
                 }
             }
-            var result = new BaseResponse<Dictionary<string, string>>() { Code = ResultCode.FAIL };
+            var result = new BaseResponse<Dictionary<string, string>>() { code = ResultCode.FAIL };
 
-            result.Message = string.Join("|", errorDic.Select(e => e.Value).Distinct());
-            result.Result = errorDic;
+            result.message = string.Join("|", errorDic.Select(e => e.Value).Distinct());
+            result.result = errorDic;
             context.Result = new JsonResult(result);
         }
     }