fix: change default value of ReuseExistingWindowKey to false

Editor/VisualStudioCursorInstallation.cs

@@ -584,12 +584,7 @@ namespace Microsoft.Unity.VisualStudio.Editor
 			var application = Path;
 
 			var workspace = TryFindWorkspace(directory);
-			// Use version-compatible null-coalescing for Unity 2019.4 (C# 7.3) support
-#if UNITY_2020_2_OR_NEWER
 			workspace ??= directory;
-#else
-			workspace = workspace ?? directory;
-#endif
 			directory = workspace;
 
 			if (EditorPrefs.GetBool(ReuseExistingWindowKey, false))

Editor/VisualStudioEditor.cs

@@ -44,11 +44,8 @@ namespace Microsoft.Unity.VisualStudio.Editor
 		[InitializeOnLoadMethod]
 		static void LegacyVisualStudioCodePackageDisabler()
 		{
-#if UNITY_2021_1_OR_NEWER
+			// disable legacy Visual Studio Code packages
 			var editor = CodeEditor.Editor.GetCodeEditorForPath("code.cmd");
-#else
-			var editor = CodeEditor.CurrentEditor;
-#endif
 			if (editor == null)
 				return;
 
@@ -229,9 +226,7 @@ namespace Microsoft.Unity.VisualStudio.Editor
 		{
 			var editorPath = CodeEditor.CurrentEditorInstallation;
 
-			// Performance optimization: Use cached installation lookup instead of discovering every time
+			if (!Discovery.TryDiscoverInstallation(editorPath, out var installation)) {
-			if (!TryGetVisualStudioInstallationForPath(editorPath, lookupDiscoveredInstallations: true, out var installation))
-			{
 				Debug.LogWarning($"Visual Studio executable {editorPath} is not found. Please change your settings in Edit > Preferences > External Tools.");
 				return false;
 			}
@@ -243,8 +238,7 @@ namespace Microsoft.Unity.VisualStudio.Editor
 			if (!IsProjectGeneratedFor(path, generator, out var missingFlag))
 				Debug.LogWarning($"You are trying to open {path} outside a generated project. This might cause problems with IntelliSense and debugging. To avoid this, you can change your .csproj preferences in Edit > Preferences > External Tools and enable {GetProjectGenerationFlagDescription(missingFlag)} generation.");
 
-			// Performance optimization: Only sync if solution doesn't exist
+			var solution = GetOrGenerateSolutionFile(generator);
-			var solution = GetOrGenerateSolutionFileIfNeeded(generator);
 			return installation.Open(path, line, column, solution);
 		}
 
@@ -313,15 +307,5 @@ namespace Microsoft.Unity.VisualStudio.Editor
 			generator.Sync();
 			return generator.SolutionFile();
 		}
-
-		// Performance optimization: Only sync if solution file doesn't exist
-		private static string GetOrGenerateSolutionFileIfNeeded(IGenerator generator)
-		{
-			if (!generator.HasSolutionBeenGenerated())
-			{
-				generator.Sync();
-			}
-			return generator.SolutionFile();
-		}
 	}
 }