Refactor tool management: Optimize tool validation and enablement logic by caching tool list

Author: IvanMurzak

Unity-MCP-Plugin/Assets/root/Editor/Scripts/UnityMcpPluginEditor.Config.cs

@@ -13,7 +13,6 @@
 using System.IO;
 using System.Linq;
 using System.Text.Json;
-using com.IvanMurzak.Unity.MCP.Runtime.Utils;
 using Microsoft.Extensions.Logging;
 using UnityEngine;
 

Unity-MCP-Plugin/Assets/root/Runtime/UnityMcpPlugin.Build.cs

@@ -169,9 +169,12 @@ protected virtual void ApplyConfigToMcpPlugin(IMcpPlugin mcpPlugin)
                 var enabledToolsOverride = unityConnectionConfig.EnabledToolsOverride;
                 if (enabledToolsOverride != null)
                 {
+                    var allTools = toolManager.GetAllTools().ToList();
+                    var enabledSet = new HashSet<string>(enabledToolsOverride, StringComparer.OrdinalIgnoreCase);
+
                     // Validate requested tool IDs against the registered tool list
                     var allToolNames = new HashSet<string>(
-                        toolManager.GetAllTools().Select(t => t.Name!),
+                        allTools.Select(t => t.Name!),
                         StringComparer.OrdinalIgnoreCase);
                     foreach (var requestedId in enabledToolsOverride)
                     {
@@ -181,8 +184,7 @@ protected virtual void ApplyConfigToMcpPlugin(IMcpPlugin mcpPlugin)
                     }
 
                     // Apply: enable only tools in the override list, disable all others
-                    var enabledSet = new HashSet<string>(enabledToolsOverride, StringComparer.OrdinalIgnoreCase);
-                    foreach (var tool in toolManager.GetAllTools())
+                    foreach (var tool in allTools)
                     {
                         var isEnabled = enabledSet.Contains(tool.Name!);
                         toolManager.SetToolEnabled(tool.Name!, isEnabled);