feat: 完成七段数码管后端

server.test/ProgressTrackerTest.cs

@@ -6,7 +6,7 @@ using server.Services;
 public class ProgressTrackerTest
 {
     [Fact]
-    public async Task Test_ProgressReporter_Basic()
+    public void Test_ProgressReporter_Basic()
     {
         int reportedValue = -1;
         var reporter = new ProgressReporter(async v => { reportedValue = v; await Task.CompletedTask; }, 0, 100, 10);