Kisani/App/AppDelegate.swift

import UIKit
import BackgroundTasks
import UserNotifications

final class AppDelegate: NSObject, UIApplicationDelegate {
    func application(
        _ application: UIApplication,
        didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
    ) -> Bool {
        UIDevice.current.isBatteryMonitoringEnabled = true
        BackgroundTaskManager.registerTasks()
        requestNotificationPermission()
        setupLANMonitor()
        // Bootstrap local indexes in the background — non-blocking.
        // After first build they're loaded from disk in microseconds.
        Task(priority: .utility) {
            await LocalPhotoIndex.shared.loadOrBuild()
        }
        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()
    }
}