Add "Open at Login" toggle to status-item menu

README.md

@@ -20,7 +20,8 @@ managed Git worktrees. Requires the `timber` CLI and an Xcode toolchain.
 - Failures post a macOS notification; never silently.
 - Keyboard: Up/Down move, Return activates, Esc closes form / clears
   filter, Ctrl+U clears.
-- Right-click (or Ctrl-click) the menubar icon for a Quit menu;
+- Right-click (or Ctrl-click) the menubar icon for an Open at Login toggle
+  and Quit;
   left-click toggles the popover.
 
 Notes on parity: enumeration is implemented natively with FileManager

Sources/Timber/TimberApp.swift

@@ -210,13 +210,36 @@ final class AppDelegate: NSObject, NSApplicationDelegate {
         guard let button = statusItem?.button, let popover else { return }
         popover.performClose(nil)
         let menu = NSMenu()
+        let loginItem = NSMenuItem(
+            title: "Open at Login",
+            action: #selector(toggleOpenAtLogin(_:)),
+            keyEquivalent: ""
+        )
+        loginItem.target = self
+        loginItem.state = TimberLoginItem.isEnabled ? .on : .off
+        menu.addItem(loginItem)
+        menu.addItem(.separator())
         menu.addItem(NSMenuItem(
             title: "Quit Timber",
             action: #selector(NSApplication.terminate(_:)),
             keyEquivalent: "q"
         ))
         menu.popUp(positioning: nil, at: NSPoint(x: 0, y: button.bounds.height), in: button)
     }
+
+    @objc private func toggleOpenAtLogin(_ sender: NSMenuItem) {
+        let enabled = sender.state != .on
+        do {
+            try TimberLoginItem.setEnabled(enabled)
+            sender.state = enabled ? .on : .off
+        } catch {
+            TimberCommand.notify(
+                subject: enabled ? "open at login" : "remove from login",
+                detail: error.localizedDescription,
+                failure: true
+            )
+        }
+    }
 }
 
 // Note: there is deliberately no SwiftUI App scene here. The entry point

Sources/Timber/TimberLoginItem.swift

@@ -0,0 +1,20 @@
+import Foundation
+import ServiceManagement
+
+/// Login-item wrapper around SMAppService.mainApp so the status-item menu
+/// can offer an "Open at Login" toggle. Thin on purpose: the only
+/// behavior is reading the current status and (un)registering, with
+/// errors propagated so callers can notify instead of failing silently.
+enum TimberLoginItem {
+    static var isEnabled: Bool {
+        SMAppService.mainApp.status == .enabled
+    }
+
+    static func setEnabled(_ enabled: Bool) throws {
+        if enabled {
+            try SMAppService.mainApp.register()
+        } else {
+            try SMAppService.mainApp.unregister()
+        }
+    }
+}