feat: replace ShortcutRecorder with MASShortcut

English.lproj/MainMenu.xib

@@ -768,9 +768,6 @@
 			<object class="NSCustomObject" id="82089617">
 				<string key="NSClassName">ApplicationController</string>
 			</object>
-			<object class="NSCustomObject" id="411804446">
-				<string key="NSClassName">GlobalHotkeys</string>
-			</object>
 			<object class="NSCustomObject" id="269446200">
 				<string key="NSClassName">RemoteHostsManager</string>
 			</object>
@@ -1768,11 +1765,6 @@
 						<reference key="object" ref="72836876"/>
 						<reference key="parent" ref="110575045"/>
 					</object>
-					<object class="IBObjectRecord">
-						<int key="objectID">586</int>
-						<reference key="object" ref="411804446"/>
-						<reference key="parent" ref="0"/>
-					</object>
 					<object class="IBObjectRecord">
 						<int key="objectID">589</int>
 						<reference key="object" ref="124828754"/>

Source/ApplicationController.m

@@ -177,8 +177,10 @@ - (void)decreaseBusyThreadsCount:(NSNotification *)notification
 
 - (void)applicationWillFinishLaunching:(NSNotification *)aNotification
 {
+	(void)[GlobalShortcuts shared]; // Register global hotkeys
+
 	[NSApp setServicesProvider:self];
-	
+
 	[self initStructure];
 
 	NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];

Source/Swift/GasMask-Bridging-Header.h

@@ -2,7 +2,6 @@
 #import "Network.h"
 #import "HostsMainController.h"
 #import "RemoteHostsController.h"
-#import "Hotkey.h"
 #import "Preferences.h"
 #import "Preferences+Remote.h"
 #import "LoginItem.h"

Source/Swift/GlobalShortcuts.swift

@@ -0,0 +1,30 @@
+import Foundation
+import MASShortcut
+
+/// Registers global keyboard shortcuts using `MASShortcutBinder`.
+///
+/// Replaces the old `GlobalHotkeys` ObjC class that used the Carbon Event Manager directly.
+/// Call `GlobalShortcuts.shared` once at app launch to register all hotkeys.
+@objc final class GlobalShortcuts: NSObject {
+    @objc static let shared = GlobalShortcuts()
+
+    private override init() {
+        super.init()
+        guard let binder = MASShortcutBinder.shared() else { return }
+        binder.bindingOptions = [
+            NSBindingOption.valueTransformerName.rawValue: MASDictionaryTransformerName
+        ]
+
+        let nc = NotificationCenter.default
+        // Notification names from Gas_Mask_Prefix.pch lines 42–44 (not importable in Swift)
+        binder.bindShortcut(withDefaultsKey: ActivatePreviousFilePrefKey) {
+            nc.post(name: .init("activatePreviousFileNotification"), object: nil)
+        }
+        binder.bindShortcut(withDefaultsKey: ActivateNextFilePrefKey) {
+            nc.post(name: .init("activateNextFileNotification"), object: nil)
+        }
+        binder.bindShortcut(withDefaultsKey: UpdateAndSynchronizePrefKey) {
+            nc.post(name: .init("updateAndSynchronizeNotification"), object: nil)
+        }
+    }
+}