Initial scaffold — NASBackup iOS app

Full project scaffold: XcodeGen project.yml, Core models/protocols/errors,
SMBService (kishikawakatsumi/SMBClient), SFTPService (Citadel 0.9.2),
PhotoLibraryService, LANMonitor, BackupEngine, BackgroundTaskManager,
all feature UIs (Login, Connect, Browse, Backup, History, Settings),
Shared components and theme. Builds clean with zero errors.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

App/AppDelegate.swift

@@ -0,0 +1,34 @@
+import UIKit
+import BackgroundTasks
+import UserNotifications
+
+final class AppDelegate: NSObject, UIApplicationDelegate {
+    func application(
+        _ application: UIApplication,
+        didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
+    ) -> Bool {
+        BackgroundTaskManager.registerTasks()
+        requestNotificationPermission()
+        setupLANMonitor()
+        return true
+    }
+
+    private func requestNotificationPermission() {
+        UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) { _, _ in }
+    }
+
+    private func setupLANMonitor() {
+        let monitor = LANMonitor.shared
+        monitor.onTrustedNetworkJoined = { ssid in
+            let store = ConnectionStore.shared
+            guard store.lanTriggerEnabled, !store.isInQuietHours else { return }
+            let delay = TimeInterval(store.startDelaySeconds)
+            BackgroundTaskManager.scheduleBackup(delay: delay)
+        }
+        monitor.start()
+    }
+
+    func applicationDidEnterBackground(_ application: UIApplication) {
+        BackgroundTaskManager.scheduleAppRefresh()
+    }
+}