refactor: improve menu text and client restart tip

- Remove '(Required)' from Setup Wizard menu item for cleaner appearance
- Update tip to reflect that most AI clients auto-detect configuration changes

Author: Claude

UnityMcpBridge/Editor/Setup/SetupWizard.cs

@@ -88,7 +88,7 @@ public static void MarkSetupDismissed()
         /// <summary>
         /// Force show setup wizard (for manual invocation)
         /// </summary>
-        [MenuItem("Window/MCP for Unity/Setup Wizard (Required)", priority = 1)]
+        [MenuItem("Window/MCP for Unity/Setup Wizard", priority = 1)]
         public static void ShowSetupWizardManual()
         {
             ShowSetupWizard();

UnityMcpBridge/Editor/Setup/SetupWizardWindow.cs

@@ -347,7 +347,7 @@ private void DrawConfigureStep()
 
             EditorGUILayout.Space();
             EditorGUILayout.HelpBox(
-                "💡 After configuration, restart your AI client for changes to take effect.",
+                "💡 Most AI clients will auto-detect the configuration. You may need to restart your client if it doesn't appear automatically.",
                 MessageType.Info
             );
         }