Refactor and Rename to CommandNotch

Downterm/CommandNotch/Managers/LaunchAtLoginHelper.swift

@@ -0,0 +1,24 @@
+import ServiceManagement
+
+/// Registers / unregisters the app as a login item using the
+/// modern SMAppService API (macOS 13+).
+enum LaunchAtLoginHelper {
+
+    static func setEnabled(_ enabled: Bool) {
+        let service = SMAppService.mainApp
+        do {
+            if enabled {
+                try service.register()
+            } else {
+                try service.unregister()
+            }
+        } catch {
+            print("[LaunchAtLogin] Failed to \(enabled ? "register" : "unregister"): \(error)")
+        }
+    }
+
+    /// Reads the current registration state from the system.
+    static var isEnabled: Bool {
+        SMAppService.mainApp.status == .enabled
+    }
+}