Fix build

Author: cyanzhong

MarkEditMac/Sources/Main/AppRuntimeConfig.swift

@@ -5,7 +5,7 @@
 //  Created by cyan on 8/9/24.
 //
 
-import Foundation
+import AppKit
 import MarkEditCore
 import MarkEditKit
 

MarkEditMac/Sources/Scripting/EditorDocument+Scripting.swift

@@ -5,6 +5,7 @@
 //  Created by Stephen Kaplan on 4/2/25.
 //
 
+import AppKit
 import MarkEditKit
 
 extension EditorDocument {

MarkEditMac/Sources/Shortcuts/Extensions/AppIntent+Extension.swift

@@ -6,6 +6,7 @@
 //
 
 import AppIntents
+import AppKit
 
 extension AppIntent {
   /// Returns the current active editor, or nil if not applicable.