Properly logout windream session on form close

Added System.ComponentModel import. Enhanced frmStart's FormClosing handler to log out of any active windream session with appropriate logging and error handling, ensuring clean session termination on application exit.

ToolCollection/frmStart.vb

@@ -5,6 +5,7 @@ Imports DigitalData.Modules.Logging
 Imports System.IO
 Imports DigitalData.Modules.Database
 Imports System.Text.RegularExpressions
+Imports System.ComponentModel
 
 Public Class frmStart
     Private _MyLogger As LogConfig
@@ -127,6 +128,18 @@ Public Class frmStart
         Dim result As MsgBoxResult = MsgBox("Sind Sie sicher, dass sie " & Application.ProductName & " wirklich schließen wollen?" & vbNewLine & "Alle Vorgänge/Module werden gestoppt und nicht mehr ausgeführt!", MsgBoxStyle.YesNo, "Bestätigung erforderlich:")
         If result = MsgBoxResult.No Then
             e.Cancel = True
+            Return          ' ← wichtig: hier sofort raus, kein Logout
+        End If
+
+        If Not IsNothing(CURRENToWMSession) Then
+            _Logger.Debug("Closing frmStart - Now logging out of windream session...")
+            Try
+                CURRENToWMSession.Logout()
+                _Logger.Debug("windream session logged out successfully.")
+            Catch ex As Exception
+                _Logger.Warn("Error while logging out windream session: " & ex.Message)
+                _Logger.Error(ex)
+            End Try
         End If
     End Sub