fix:心跳机制

Ink Canvas/App.xaml.cs

@@ -1253,7 +1253,20 @@ namespace Ink_Canvas
                     }
                 }
 
-                if (isStartupComplete && (DateTime.Now - lastHeartbeat).TotalSeconds > 10)
+                if (isStartupComplete)
+                {
+                    var now = DateTime.Now;
+                    var sinceHeartbeat = now - lastHeartbeat;
+                    var sinceStartupComplete = startupCompleteHeartbeat == DateTime.MinValue
+                        ? TimeSpan.Zero
+                        : now - startupCompleteHeartbeat;
+
+                    if (sinceStartupComplete.TotalSeconds < 30)
+                    {
+                        return;
+                    }
+
+                    if (sinceHeartbeat.TotalSeconds > 10)
                     {
                         LogHelper.NewLog("检测到主线程无响应，自动重启。");
                         SyncCrashActionFromSettings();
@@ -1275,6 +1288,7 @@ namespace Ink_Canvas
                             Environment.Exit(1);
                         }
                     }
+                }
             }, null, 0, 3000);
         }