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/Views/Dashboard/InsightsRow.swift

@@ -21,7 +21,7 @@ struct InsightsRow: View {
                 HStack(spacing: 12) {
                     Image(systemName: insight.systemImage)
                         .font(.subheadline.weight(.semibold))
-                        .foregroundColor(insight.accentColor)
+                        .foregroundStyle(insight.accentColor)
                         .frame(width: 30, height: 30)
                         .background(insight.accentColor.opacity(0.12))
                         .clipShape(Circle())
@@ -29,15 +29,15 @@ struct InsightsRow: View {
                     VStack(alignment: .leading, spacing: 1) {
                         Text(insight.title)
                             .font(.caption)
-                            .foregroundColor(.secondary)
+                            .foregroundStyle(.secondary)
                         Text(insight.value)
                             .font(.subheadline.weight(.semibold))
-                            .foregroundColor(.primary)
+                            .foregroundStyle(.primary)
                             .lineLimit(2)
                         if let detail = insight.detail {
                             Text(detail)
                                 .font(.caption2)
-                                .foregroundColor(.secondary)
+                                .foregroundStyle(.secondary)
                                 .lineLimit(1)
                         }
                     }
@@ -56,7 +56,7 @@ struct InsightsRow: View {
                 }
                 .padding(14)
                 .background(Color(.secondarySystemGroupedBackground))
-                .cornerRadius(AppConstants.UI.cornerRadius)
+                .clipShape(RoundedRectangle(cornerRadius: AppConstants.UI.cornerRadius))
             }
             .buttonStyle(.plain)
             .id(insight.id)