improve:ROT联动

Ink Canvas/Helpers/ROTPPTManager.cs

@@ -221,11 +221,10 @@ namespace Ink_Canvas.Helpers
         {
             try
             {
-                if (!_isModuleUnloading)
-                {
+                if (_disposed || _isModuleUnloading)
+                    return;
                 CheckAndConnectToPPTViaRot();
             }
-            }
             catch (Exception ex)
             {
                 LogHelper.WriteLogToFile($"[ROT] PPT 连接检查失败: {ex}", LogHelper.LogType.Error);
@@ -236,11 +235,10 @@ namespace Ink_Canvas.Helpers
         {
             try
             {
-                if (!_isModuleUnloading && IsConnected)
-                {
+                if (_disposed || _isModuleUnloading || !IsConnected)
+                    return;
                 CheckSlideShowState();
             }
-            }
             catch (Exception ex)
             {
                 LogHelper.WriteLogToFile($"[ROT] PPT 放映状态检查失败: {ex}", LogHelper.LogType.Error);
@@ -249,7 +247,7 @@ namespace Ink_Canvas.Helpers
 
         private void CheckAndConnectToPPTViaRot()
         {
-            if (_isModuleUnloading) return;
+            if (_disposed || _isModuleUnloading) return;
 
             if (_pptApplication != null && !IsConnected)
             {
@@ -457,6 +455,7 @@ namespace Ink_Canvas.Helpers
                         System.Threading.Thread.Sleep(200);
 
                         _isModuleUnloading = false;
+                        if (!_disposed)
                             _unifiedRotTimer?.Start();
                     }
                     catch (Exception ex)

Ink Canvas/MainWindow_cs/MW_PPT.cs

@@ -104,7 +104,7 @@ namespace Ink_Canvas
         private const int SlideSwitchDebounceMs = 150; // 防抖延迟150毫秒
 
         private DispatcherTimer _exitPPTModeAfterDisconnectTimer;
-        private const int ExitPPTModeAfterDisconnectDelayMs = 800; 
+        private const int ExitPPTModeAfterDisconnectDelayMs = 1200; 
         #endregion
 
         #region PPT Managers