添加兼容旧库的桌面端登录设置配置项，确保在缺失时自动补全相关 sys_config 项

yy-admin-master/YY.Admin.Services/Service/Config/SysConfigService.cs

@@ -1,6 +1,7 @@
 using SqlSugar;
 using YY.Admin.Core;
 using YY.Admin.Core.Const;
+using YY.Admin.Core.SeedData;
 
 namespace YY.Admin.Services.Service.Config
 {
@@ -41,7 +42,28 @@ namespace YY.Admin.Services.Service.Config
                 .ExecuteCommandAsync();
 
             if (n <= 0)
-                return (false, "未找到对应配置项或无需更新");
+            {
+                // 旧库可能缺少新增配置项，按种子模板补插后再写入
+                var seed = new SysConfigSeedData().HasData()
+                    .FirstOrDefault(c => string.Equals(c.Code, code, StringComparison.OrdinalIgnoreCase));
+                if (seed == null)
+                    return (false, "未找到对应配置项或无需更新");
+
+                var row = new SysConfig
+                {
+                    Id = seed.Id,
+                    Name = seed.Name,
+                    Code = seed.Code,
+                    Value = value,
+                    SysFlag = seed.SysFlag,
+                    GroupCode = seed.GroupCode,
+                    OrderNo = seed.OrderNo,
+                    Remark = seed.Remark,
+                    CreateTime = DateTime.Now,
+                    UpdateTime = DateTime.Now,
+                };
+                await _dbContext.Insertable(row).ExecuteCommandAsync();
+            }
 
             _sysCacheService.Remove($"{CacheConst.KeyConfig}{code}");
             return (true, "保存成功");