Add EditorPrefs management window for MCP configuration debugging (#491)

* Add EditorPrefs management window for MCP configuration debugging

Meant to help with dev and testing, not so much the average user

* Update MCPForUnity/Editor/Windows/EditorPrefs/EditorPrefsWindow.cs

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

* Revert "Update MCPForUnity/Editor/Windows/EditorPrefs/EditorPrefsWindow.cs"

This reverts commit 09bb4e1.

* Reapply "Update MCPForUnity/Editor/Windows/EditorPrefs/EditorPrefsWindow.cs"

This reverts commit 6ccbc5e.

* Fix EditorPrefs type detection using sentinel values and null handling

* Simplify EditorPrefs type detection using known type mapping and basic parsing

Replace complex sentinel-based type detection with a dictionary of known pref types and simple TryParse fallback for unknown keys. Remove null handling and HasKey checks for known keys since they're defined in EditorPrefKeys.

---------

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

Author: msanatan

MCPForUnity/Editor/MenuItems/MCPForUnityMenu.cs

@@ -7,13 +7,7 @@ namespace MCPForUnity.Editor.MenuItems
 {
     public static class MCPForUnityMenu
     {
-        [MenuItem("Window/MCP For Unity/Setup Window", priority = 1)]
-        public static void ShowSetupWindow()
-        {
-            SetupWindowService.ShowSetupWindow();
-        }
-
-        [MenuItem("Window/MCP For Unity/Toggle MCP Window %#m", priority = 2)]
+        [MenuItem("Window/MCP For Unity/Toggle MCP Window %#m", priority = 1)]
         public static void ToggleMCPWindow()
         {
             if (MCPForUnityEditorWindow.HasAnyOpenWindow())
@@ -25,5 +19,18 @@ public static void ToggleMCPWindow()
                 MCPForUnityEditorWindow.ShowWindow();
             }
         }
+
+        [MenuItem("Window/MCP For Unity/Setup Window", priority = 2)]
+        public static void ShowSetupWindow()
+        {
+            SetupWindowService.ShowSetupWindow();
+        }
+
+
+        [MenuItem("Window/MCP For Unity/EditorPrefs", priority = 3)]
+        public static void ShowEditorPrefsWindow()
+        {
+            EditorPrefsWindow.ShowWindow();
+        }
     }
 }

MCPForUnity/Editor/Services/EditorPrefsWindowService.cs

@@ -0,0 +1,54 @@
+using System;
+using MCPForUnity.Editor.Windows;
+using UnityEditor;
+
+namespace MCPForUnity.Editor.Services
+{
+    /// <summary>
+    /// Service for managing the EditorPrefs window
+    /// Follows the Class-level Singleton pattern
+    /// </summary>
+    public class EditorPrefsWindowService
+    {
+        private static EditorPrefsWindowService _instance;
+        
+        /// <summary>
+        /// Get the singleton instance
+        /// </summary>
+        public static EditorPrefsWindowService Instance
+        {
+            get
+            {
+                if (_instance == null)
+                {
+                    throw new Exception("EditorPrefsWindowService not initialized");
+                }
+                return _instance;
+            }
+        }
+        
+        /// <summary>
+        /// Initialize the service
+        /// </summary>
+        public static void Initialize()
+        {
+            if (_instance == null)
+            {
+                _instance = new EditorPrefsWindowService();
+            }
+        }
+        
+        private EditorPrefsWindowService()
+        {
+            // Private constructor for singleton
+        }
+        
+        /// <summary>
+        /// Show the EditorPrefs window
+        /// </summary>
+        public void ShowWindow()
+        {
+            EditorPrefsWindow.ShowWindow();
+        }
+    }
+}

MCPForUnity/Editor/Services/EditorPrefsWindowService.cs.meta

@@ -0,0 +1,21 @@
+<ui:UXML xmlns:ui="UnityEngine.UIElements" xmlns:uie="UnityEditor.UIElements" editor-extension-mode="True">
+    <ui:VisualElement class="pref-item">
+        <ui:VisualElement class="pref-row">
+            <!-- Key and Known indicator -->
+            <ui:VisualElement class="key-section">
+                <ui:Label name="key-label" class="key-label" />
+            </ui:VisualElement>
+            
+            <!-- Value field -->
+            <ui:TextField name="value-field" class="value-field" />
+            
+            <!-- Type dropdown -->
+            <ui:DropdownField name="type-dropdown" class="type-dropdown" choices="String,Int,Float,Bool" index="0" />
+            
+            <!-- Action buttons -->
+            <ui:VisualElement class="action-buttons">
+                <ui:Button name="save-button" text="✓" class="save-button" tooltip="Save changes" />
+            </ui:VisualElement>
+        </ui:VisualElement>
+    </ui:VisualElement>
+</ui:UXML>