Xcode 27: compila sin warnings y migra API deprecadas de SwiftUI

- Imports de CoreData que faltaban (MemberImportVisibility) en AccountsView,
  ImportDataView, ChartsContainerView y AddSourceView.
- Aislamiento MainActor: IsolatedDefaultValues en el target de la app,
  LinearGradient @MainActor, WatchSyncMessage nonisolated, closures de
  ReviewPromptService/MonthlyCheckInStore/AppIntents.
- Warnings de valores sin usar (SnapshotGapDetector, DashboardLayoutStore,
  OnboardingView, GoalEditorView, CoreDataStack, SettingsViewModel).
- foregroundColor→foregroundStyle, cornerRadius→clipShape,
  navigationBarLeading/Trailing→topBarLeading/Trailing,
  Task.sleep(nanoseconds:)→sleep(for:), NavigationLink(isActive:)→
  navigationDestination(isPresented:).

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01F1u4K16xy7eQVtgsYNZ9Vn

PortfolioJournal/Services/AppIntentsSupport.swift

@@ -60,14 +60,14 @@ struct SourceEntity: AppEntity {
 
 struct SourceEntityQuery: EntityQuery {
     func entities(for identifiers: [UUID]) async throws -> [SourceEntity] {
-        SharedQuickUpdateStore.readMirror()
+        await MainActor.run { SharedQuickUpdateStore.readMirror() }
             .filter { identifiers.contains($0.id) }
             .map(SourceEntity.init)
     }
 
     func suggestedEntities() async throws -> [SourceEntity] {
         // Pending-first, mirroring the Share Extension's ordering.
-        SharedQuickUpdateStore.readMirror()
+        await MainActor.run { SharedQuickUpdateStore.readMirror() }
             .sorted { a, b in
                 if a.updatedThisMonth != b.updatedThisMonth { return !a.updatedThisMonth }
                 return a.name.localizedCaseInsensitiveCompare(b.name) == .orderedAscending