Merge branch 'feature/snapshot' into test

src/Hotline/Caching/Interfaces/ISystemSettingCacheManager.cs

@@ -87,7 +87,7 @@ namespace Hotline.Caching.Interfaces
         /// 网格员回复等待时间(单位:小时)
         /// 超过该时间自动退回工单
         /// </summary>
-        int OvertimeBack { get; }
+        double OvertimeBack { get; }
 
         /// <summary>
         /// 天阙服务AppKey|AppSecret

src/Hotline/Caching/Services/SystemSettingCacheManager.cs

@@ -179,8 +179,8 @@ namespace Hotline.Caching.Services
         /// 网格员回复等待时间(单位:小时)
         /// 超过该时间自动退回工单
         /// </summary>
-        public int OvertimeBack =>
-            GetOrDefault("08dd18e0-1c9e-4aa5-8dc6-f639e8d1b3ea", SettingConstants.OvertimeBack, "网格员回复等待时间(单元小时)", 4, "网格员回复等待时间(单位:小时), 超过该时间自动退回工单");
+        public double OvertimeBack =>
+            GetOrDefault("08dd18e0-1c9e-4aa5-8dc6-f639e8d1b3ea", SettingConstants.OvertimeBack, "网格员回复等待时间(单元小时)", 4d, "网格员回复等待时间(单位:小时), 超过该时间自动退回工单");
 
         /// <summary>
         /// 天阙服务AppKey|AppSecret