fix(send): 修复文件上传进度计算逻辑

- 将进度字段类型从 double 改为 decimal 以提高精度
- 移除原有的进度更新频率限制逻辑
- 重构进度计算公式，使用已完成项目数与总项目数的比例
- 修复除零错误的处理逻辑
- 更新文件计数显示格式为完成数量/总数量

ViewModel/Send/SendViewModel.cs

@@ -203,9 +203,9 @@ namespace HeBianGu.App.Disk
 
 
         //文件上传进度
-        private double _progress;
+        private decimal _progress;
 
-        public double Progress
+        public decimal Progress
         {
             get { return _progress; }
             set
@@ -549,19 +549,21 @@ namespace HeBianGu.App.Disk
         private void UpdateProgress(object sender, ElapsedEventArgs e)
         {
             if (UpLoadItems.Count == 0) return;
-
-            // 限制进度更新频率
             var now = DateTime.Now;
+            /*// 限制进度更新频率
+
             if ((now - _lastProgressUpdate).TotalMilliseconds < 500) // 至少500ms更新一次
             {
                 return;
             }
 
             double currentBytes = UpLoadItems.Sum(r => r.Double2);
-            double totalBytes = UpLoadItems.Sum(r => r.Double1);
-
+            double totalBytes = UpLoadItems.Sum(r => r.Double1);*/
+            FileCount = (CompleteItems.Count) + "/" + (UpLoadItems.Count + CompleteItems.Count);
             // 避免除零错误
-            double progress = totalBytes > 0 ? Math.Round((currentBytes / totalBytes) * 100, 2) : 0;
+            var progress = UpLoadItems.Count > 0
+                ? Math.Round((decimal)(CompleteItems.Count / (UpLoadItems.Count + CompleteItems.Count)) * 100, 2)
+                : 0;
 
             Application.Current.Dispatcher.Invoke(() =>
             {