Use direct pattern for policy check and remove helper property

Co-authored-by: BornToBeRoot <16019165+BornToBeRoot@users.noreply.github.com>

Author: Copilot

Source/NETworkManager.Settings/SettingsManager.cs

@@ -56,25 +56,6 @@ public static class SettingsManager
     /// </summary>
     public static bool HotKeysChanged { get; set; }
 
-    /// <summary>
-    ///     Gets whether update check should be performed at startup.
-    ///     This respects the system-wide policies (config.json) which take precedence over user settings.
-    /// </summary>
-    public static bool ShouldCheckForUpdatesAtStartup
-    {
-        get
-        {
-            // System-wide policy takes precedence - if set, use the policy value
-            if (PolicyManager.Current?.Update_CheckForUpdatesAtStartup.HasValue == true)
-            {
-                return PolicyManager.Current.Update_CheckForUpdatesAtStartup.Value;
-            }
-
-            // Otherwise, use the user's setting
-            return Current.Update_CheckForUpdatesAtStartup;
-        }
-    }
-
     /// <summary>
     ///     JSON serializer options for consistent serialization/deserialization.
     /// </summary>

Source/NETworkManager/MainWindow.xaml.cs

@@ -561,7 +561,8 @@ private void Load()
         NetworkChange.NetworkAddressChanged += (_, _) => OnNetworkHasChanged();
 
         // Search for updates... 
-        if (SettingsManager.ShouldCheckForUpdatesAtStartup)
+        if (PolicyManager.Current?.Update_CheckForUpdatesAtStartup 
+            ?? SettingsManager.Current.Update_CheckForUpdatesAtStartup)
             CheckForUpdates();
     }