v4.8.0: Add scheduled report generation

- ScheduledReportService (@MainActor, headless/storage-backed like
  DomainMonitoringService): builds the latest report for every tracked domain
  from persisted history, exports it via DomainReportExporter in the
  configured format (markdown/PDF/JSON), writes it to a local Documents
  subdirectory, logs the run, and fires a "Scheduled Report Ready" local
  notification.
- ScheduledReportScheduler mirrors DomainMonitoringScheduler's BGTaskScheduler
  approach with its own task identifier (net.cleberg.DomainDig.report.schedule,
  added to Info.plist) and a daily/weekly cadence.
- ScheduledReportsView (Settings → Scheduled Reports): enable toggle, cadence
  and format pickers, "Generate Now", and a log of past reports each shareable
  via the existing ExportPresenter share sheet.
- Gated behind the existing .automatedMonitoring capability (Pro), consistent
  with monitoring being the other background-automation feature.
- Settings/logs persist via UserDefaults (DomainExportFormat is now Codable),
  not DomainDataPortabilityService backup/restore — this is local automation
  configuration, not user-authored content, same reasoning as v4.7.0's
  watchlist saved views.

1 files changed, 9 insertions, 0 deletions

diff --git a/DomainDig/LocalNotificationService.swift b/DomainDig/LocalNotificationService.swift
index f417619..d3474e3 100644
--- a/DomainDig/LocalNotificationService.swift
+++ b/DomainDig/LocalNotificationService.swift
@@ -140,6 +140,15 @@ final class LocalNotificationService {
         )
     }
 
+    func notifyScheduledReportReady(domainCount: Int) async {
+        await schedule(
+            identifier: "scheduled-report-\(UUID().uuidString)",
+            title: "Scheduled Report Ready",
+            body: "Report generated for \(domainCount) domain\(domainCount == 1 ? "" : "s").",
+            interruptionLevel: .active
+        )
+    }
+
     func clearAllNotifications() async {
         let center = UNUserNotificationCenter.current()
         center.removeAllPendingNotificationRequests()