fix: stop settings hang caused by blocking XPC call on main thread

SMAppService.mainApp.status makes a synchronous XPC call to smd that
can block for 5+ seconds. The async version was already written and used
in init/bootstrapDefaultPreference, but onAppear was calling the sync
refreshStatus() instead. Switch to refreshStatusAsync() so the XPC call
runs off the main actor.

Confirmed via `sample`: 100% of samples during the hang were blocked in
mach_msg2_trap inside SMAppService's XPC pipe.

Author: vegerot

Dayflow/Dayflow/System/LaunchAtLoginManager.swift

@@ -27,20 +27,9 @@ final class LaunchAtLoginManager: ObservableObject {
   }
 
   /// Re-sync with System Settings, e.g. if the user adds/removes Dayflow manually.
-  /// This is the synchronous version for use in setEnabled() after user action.
-  func refreshStatus() {
-    let status = SMAppService.mainApp.status
-    let enabled = (status == .enabled)
-    if isEnabled != enabled {
-      logger.debug(
-        "Launch at login status changed → \(enabled ? "enabled" : "disabled") [status=\(String(describing: status))]"
-      )
-    }
-    isEnabled = enabled
-  }
-
-  /// Async version that runs the XPC call off the main actor to avoid blocking
-  private func refreshStatusAsync() async {
+  /// Callers should fire-and-forget via `Task { await refreshStatusAsync() }` or
+  /// the SwiftUI `.task {}` modifier — never call this directly from a synchronous context.
+  func refreshStatusAsync() async {
     // Run XPC call on background thread
     let status = await Task.detached(priority: .utility) {
       SMAppService.mainApp.status

Dayflow/Dayflow/Views/UI/SettingsView.swift

@@ -102,7 +102,9 @@ struct SettingsView: View {
       otherViewModel.refreshAnalyticsState()
       storageViewModel.refreshStorageIfNeeded(isStorageTab: selectedTab == .storage)
       AnalyticsService.shared.capture("settings_opened")
-      launchAtLoginManager.refreshStatus()
+    }
+    .task {
+      await launchAtLoginManager.refreshStatusAsync()
     }
     .onChange(of: selectedTab) { _, newValue in
       if newValue == .storage {