feat(v3.6.0): add iCloud sharing for workflows and tracked domains

- implement CloudKit sharing (CKShare) for TrackedDomain and DomainWorkflow
- support read-only and editable permissions
- add Share actions and shared state indicators in UI
- handle shared record ownership and participant roles
- implement deterministic conflict resolution to prevent duplication
- ensure compatibility with existing iCloud sync layer
- maintain local-first behavior with graceful offline handling
- remove debug logging for domain availability/rdap messages

notes:
- no custom backend or accounts introduced
- sharing is Apple ecosystem only (iCloud-based)
- large history data remains local-only

1 files changed, 11 insertions, 0 deletions

diff --git a/DomainDig/DomainDigApp.swift b/DomainDig/DomainDigApp.swift
index f7cd15e..4bb1b8f 100644
--- a/DomainDig/DomainDigApp.swift
+++ b/DomainDig/DomainDigApp.swift
@@ -9,10 +9,12 @@ import SwiftUI
 
 @main
 struct DomainDigApp: App {
+    @UIApplicationDelegateAdaptor(DomainDigAppDelegate.self) private var appDelegate
     @Environment(\.scenePhase) private var scenePhase
     @AppStorage(AppDensity.userDefaultsKey) private var density = AppDensity.compact.rawValue
     @State private var viewModel = DomainViewModel()
     @State private var purchaseService = PurchaseService.shared
+    @State private var cloudSyncService = CloudSyncService.shared
 
     init() {
         LocalNotificationService.shared.configureForegroundPresentation()
@@ -25,9 +27,16 @@ struct DomainDigApp: App {
                 .environment(\.appDensity, AppDensity(rawValue: density) ?? .compact)
                 .task {
                     let _ = purchaseService.currentTier
+                    let _ = cloudSyncService.status
                     await purchaseService.refreshEntitlements()
                     viewModel.refreshMonitoringState()
                     await viewModel.refreshMonitoringAuthorizationStatus()
+                    await cloudSyncService.refreshAvailability()
+                    cloudSyncService.scheduleSyncIfNeeded(trigger: .launch)
+                    viewModel.monitoringStatusMessage = DomainMonitoringScheduler.shared.syncSchedule()
+                }
+                .onReceive(NotificationCenter.default.publisher(for: .cloudSyncDidApplyChanges)) { _ in
+                    viewModel.refreshPersistedData()
                     viewModel.monitoringStatusMessage = DomainMonitoringScheduler.shared.syncSchedule()
                 }
         }
@@ -36,7 +45,9 @@ struct DomainDigApp: App {
             viewModel.refreshMonitoringState()
             Task {
                 await viewModel.refreshMonitoringAuthorizationStatus()
+                await cloudSyncService.refreshAvailability()
             }
+            cloudSyncService.scheduleSyncIfNeeded(trigger: .launch)
             viewModel.monitoringStatusMessage = DomainMonitoringScheduler.shared.syncSchedule()
         }
     }