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/ShareCards.swift

@@ -157,7 +157,7 @@ private func eyebrow(_ text: String) -> some View {
     Text(text.uppercased())
         .font(.caption2.weight(.bold))
         .tracking(2.2)
-        .foregroundColor(ShareCardStyle.green)
+        .foregroundStyle(ShareCardStyle.green)
 }
 
 private func deltaChip(_ text: String, positive: Bool, large: Bool = false) -> some View {
@@ -167,7 +167,7 @@ private func deltaChip(_ text: String, positive: Bool, large: Bool = false) -> s
         Text(text)
             .font((large ? Font.headline : Font.caption).weight(.bold))
     }
-    .foregroundColor(positive ? ShareCardStyle.green : Color(red: 1, green: 0.42, blue: 0.42))
+    .foregroundStyle(positive ? ShareCardStyle.green : Color(red: 1, green: 0.42, blue: 0.42))
     .padding(.horizontal, large ? 12 : 9)
     .padding(.vertical, large ? 6 : 4)
     .background(
@@ -179,11 +179,11 @@ private func metricRow(_ title: String, _ value: String, theme: ShareCardTheme)
     HStack {
         Text(title)
             .font(.caption.weight(.semibold))
-            .foregroundColor(theme.mutedInk)
+            .foregroundStyle(theme.mutedInk)
         Spacer()
         Text(value)
             .font(.subheadline.weight(.semibold))
-            .foregroundColor(theme.ink)
+            .foregroundStyle(theme.ink)
             .multilineTextAlignment(.trailing)
             .minimumScaleFactor(0.7)
             .lineLimit(1)
@@ -203,13 +203,13 @@ private func brandHeader(theme: ShareCardTheme, asOf: String?) -> some View {
         VStack(alignment: .leading, spacing: 1) {
             Text("Portfolio Journal")
                 .font(.system(.title2, design: .rounded).weight(.heavy))
-                .foregroundColor(theme.ink)
+                .foregroundStyle(theme.ink)
                 .minimumScaleFactor(0.7)
                 .lineLimit(1)
             if let asOf {
                 Text(String(format: String(localized: "share_as_of"), asOf))
                     .font(.caption2.weight(.medium))
-                    .foregroundColor(theme.mutedInk)
+                    .foregroundStyle(theme.mutedInk)
             }
         }
         Spacer(minLength: 0)
@@ -223,11 +223,11 @@ private func downloadFooter(qrCodeImage: UIImage?, theme: ShareCardTheme) -> som
         VStack(alignment: .leading, spacing: 3) {
             Text(String(localized: "share_cta_headline"))
                 .font(.subheadline.weight(.bold))
-                .foregroundColor(theme.ink)
+                .foregroundStyle(theme.ink)
                 .fixedSize(horizontal: false, vertical: true)
             Text(String(localized: "share_cta_sub"))
                 .font(.caption2.weight(.medium))
-                .foregroundColor(theme.mutedInk)
+                .foregroundStyle(theme.mutedInk)
         }
 
         Spacer(minLength: 8)
@@ -295,13 +295,13 @@ struct PortfolioValueShareCardView: View {
                 eyebrow(String(localized: "share_hero_eyebrow"))
                 Text(heroPercent ?? totalValue)
                     .font(.system(size: storyFormat ? 52 : 44, weight: .heavy, design: .rounded))
-                    .foregroundColor(heroIsPercent ? (isPositive ? ShareCardStyle.green : Color(red: 1, green: 0.42, blue: 0.42)) : theme.ink)
+                    .foregroundStyle(heroIsPercent ? (isPositive ? ShareCardStyle.green : Color(red: 1, green: 0.42, blue: 0.42)) : theme.ink)
                     .minimumScaleFactor(0.5)
                     .lineLimit(1)
                 if heroIsPercent && !totalValue.isEmpty {
                     Text(totalValue)
                         .font(.title3.weight(.bold))
-                        .foregroundColor(theme.ink)
+                        .foregroundStyle(theme.ink)
                         .minimumScaleFactor(0.5)
                         .lineLimit(1)
                 }
@@ -363,7 +363,7 @@ struct MonthlyCheckInShareCardView: View {
             eyebrow(summary.formattedMonthYear)
             Text("Monthly Check-in")
                 .font(.title.weight(.bold))
-                .foregroundColor(theme.ink)
+                .foregroundStyle(theme.ink)
                 .padding(.top, 4)
 
             VStack(spacing: 9) {
@@ -472,8 +472,8 @@ struct PortfolioShareOptionsView: View {
                         .frame(maxWidth: .infinity)
                         .padding(.vertical, 14)
                         .background(Color.appPrimary)
-                        .foregroundColor(.white)
-                        .cornerRadius(14)
+                        .foregroundStyle(.white)
+                        .clipShape(RoundedRectangle(cornerRadius: 14))
                 }
                 .padding(.horizontal)
                 .padding(.bottom, 8)