Primera build enviada

PortfolioJournal/Repositories/SnapshotRepository.swift

@@ -2,6 +2,7 @@ import Foundation
 import CoreData
 import Combine
 
+@MainActor
 class SnapshotRepository: ObservableObject {
     private let context: NSManagedObjectContext
     private let cache = NSCache<NSString, NSArray>()
@@ -9,6 +10,8 @@ class SnapshotRepository: ObservableObject {
 
     @Published private(set) var snapshots: [Snapshot] = []
 
+    private var cancellables = Set<AnyCancellable>()
+
     // MARK: - Performance: Shared DateFormatter
     private static let monthYearFormatter: DateFormatter = {
         let formatter = DateFormatter()
@@ -301,16 +304,17 @@ class SnapshotRepository: ObservableObject {
         cacheVersion &+= 1
     }
 
-    private func setupNotificationObserver() {
-        NotificationCenter.default.addObserver(
-            self,
-            selector: #selector(contextDidChange),
-            name: .NSManagedObjectContextObjectsDidChange,
-            object: context
-        )
+    /// Clear cache on memory pressure - call from AppDelegate's didReceiveMemoryWarning
+    func clearCacheOnMemoryPressure() {
+        cache.removeAllObjects()
     }
 
-    @objc private func contextDidChange(_ notification: Notification) {
-        invalidateCache()
+    private func setupNotificationObserver() {
+        NotificationCenter.default.publisher(for: .NSManagedObjectContextObjectsDidChange, object: context)
+            .receive(on: DispatchQueue.main)
+            .sink { [weak self] _ in
+                self?.invalidateCache()
+            }
+            .store(in: &cancellables)
     }
 }