Enable iCloud sync by default, remove user toggle

- CloudKit sync is now always enabled for all users
- Remove useCloudKit setting and toggle from Settings
- Remove CloudKitSyncMonitor usage (package can be removed)
- Remove container switching logic since sync is always on
- Update SharedModelContainer defaults to enable CloudKit

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Shared/Persisence/DataController.swift

@@ -20,12 +20,8 @@ final class DataController: ObservableObject {
         container.mainContext
     }
 
-    private var useCloudKit: Bool {
-        GroupUserDefaults.groupDefaults.bool(forKey: UserDefaultsStore.Keys.useCloudKit.rawValue)
-    }
 
     // Listeners for data changes (keeping existing pattern)
-    var switchContainerListeners = [(() -> Void)]()
     private var editedDataClosure = [() -> Void]()
 
     // Computed properties for earliest/latest entries
@@ -46,19 +42,9 @@ final class DataController: ObservableObject {
     }
 
     private init() {
-        let cloudKit = GroupUserDefaults.groupDefaults.bool(forKey: UserDefaultsStore.Keys.useCloudKit.rawValue)
-        container = SharedModelContainer.createWithFallback(useCloudKit: cloudKit)
+        container = SharedModelContainer.createWithFallback(useCloudKit: true)
     }
 
-    // MARK: - Container Switching (for CloudKit toggle)
-
-    func switchContainer() {
-        save()
-        container = SharedModelContainer.createWithFallback(useCloudKit: useCloudKit)
-        for listener in switchContainerListeners {
-            listener()
-        }
-    }
 
     // MARK: - Listener Management
 

Shared/Persisence/DataControllerProtocol.swift

@@ -102,7 +102,7 @@ final class WidgetDataProvider: MoodDataReading {
         if let existing = _container {
             return existing
         }
-        let newContainer = SharedModelContainer.createWithFallback(useCloudKit: false)
+        let newContainer = SharedModelContainer.createWithFallback(useCloudKit: true)
         _container = newContainer
         return newContainer
     }

Shared/Persisence/SharedModelContainer.swift

@@ -28,10 +28,10 @@ enum SharedModelContainer {
     private static let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "com.tt.ifeel", category: "SharedModelContainer")
 
     /// Creates a ModelContainer with the appropriate configuration for app group sharing
-    /// - Parameter useCloudKit: Whether to enable CloudKit sync
+    /// - Parameter useCloudKit: Whether to enable CloudKit sync (defaults to true)
     /// - Returns: Configured ModelContainer
     /// - Throws: SharedModelContainerError if creation fails
-    static func create(useCloudKit: Bool = false) throws -> ModelContainer {
+    static func create(useCloudKit: Bool = true) throws -> ModelContainer {
         let schema = Schema([MoodEntryModel.self])
         let storeURL = try Self.storeURL
 
@@ -61,9 +61,9 @@ enum SharedModelContainer {
     }
 
     /// Creates a ModelContainer, falling back to in-memory storage if shared container fails
-    /// - Parameter useCloudKit: Whether to enable CloudKit sync
+    /// - Parameter useCloudKit: Whether to enable CloudKit sync (defaults to true)
     /// - Returns: Configured ModelContainer (shared or in-memory fallback)
-    static func createWithFallback(useCloudKit: Bool = false) -> ModelContainer {
+    static func createWithFallback(useCloudKit: Bool = true) -> ModelContainer {
         do {
             return try create(useCloudKit: useCloudKit)
         } catch {

Shared/Views/DayView/DayViewViewModel.swift

@@ -35,11 +35,6 @@ class DayViewViewModel: ObservableObject {
     init(addMonthStartWeekdayPadding: Bool) {
         self.addMonthStartWeekdayPadding = addMonthStartWeekdayPadding
 
-        DataController.shared.switchContainerListeners.append { [weak self] in
-            guard let self = self else { return }
-            self.getGroupedData(addMonthStartWeekdayPadding: self.addMonthStartWeekdayPadding)
-        }
-
         DataController.shared.addNewDataListener { [weak self] in
             guard let self = self else { return }
             withAnimation {

Shared/Views/SettingsView/SettingsView.swift

@@ -6,7 +6,6 @@
 //
 
 import SwiftUI
-import CloudKitSyncMonitor
 import UniformTypeIdentifiers
 import StoreKit
 import TipKit
@@ -461,10 +460,8 @@ struct SettingsView: View {
 
     @State private var showSpecialThanks = false
     @State private var showWhyBGMode = false
-    @ObservedObject var syncMonitor = SyncMonitor.shared
     @StateObject private var healthService = HealthService.shared
 
-    @AppStorage(UserDefaultsStore.Keys.useCloudKit.rawValue, store: GroupUserDefaults.groupDefaults) private var useCloudKit = false
     @AppStorage(UserDefaultsStore.Keys.deleteEnable.rawValue, store: GroupUserDefaults.groupDefaults) private var deleteEnabled = true
     @AppStorage(UserDefaultsStore.Keys.theme.rawValue, store: GroupUserDefaults.groupDefaults) private var theme: Theme = .system
     @AppStorage(UserDefaultsStore.Keys.textColor.rawValue, store: GroupUserDefaults.groupDefaults) private var textColor: Color = DefaultTextColor.textColor
@@ -505,11 +502,6 @@ struct SettingsView: View {
                     Text("Test builds only")
                     addTestDataCell
                     clearDB
-                    //                    randomIcons
-                    
-                    if useCloudKit {
-                        cloudKitStatus
-                    }
                     //                    fixWeekday
                     exportData
                     importData
@@ -1004,42 +996,6 @@ struct SettingsView: View {
         .cornerRadius(Constants.viewsCornerRaidus, corners: [.topLeft, .topRight, .bottomLeft, .bottomRight])
     }
     
-    private var cloudKitEnable: some View {
-        ZStack {
-            theme.currentTheme.secondaryBGColor
-            VStack {
-                Toggle(isOn: $useCloudKit, label: {
-                    Text(String(localized: "settings_use_cloudkit_title"))
-                        .foregroundColor(textColor)
-                })
-                .onChange(of: useCloudKit) { _, newValue in
-                    EventLogger.log(event: "toggle_use_cloudkit", withData: ["value": newValue])
-                }
-                .padding()
-                Text(String(localized: "settings_use_cloudkit_body"))
-                    .foregroundColor(textColor)
-            }
-            .padding(.bottom)
-        }
-        .fixedSize(horizontal: false, vertical: true)
-        .cornerRadius(Constants.viewsCornerRaidus, corners: [.topLeft, .topRight, .bottomLeft, .bottomRight])
-    }
-    
-    private var cloudKitStatus: some View {
-        ZStack {
-            theme.currentTheme.secondaryBGColor
-            VStack {
-                Image(systemName: syncMonitor.syncStateSummary.symbolName)
-                    .foregroundColor(syncMonitor.syncStateSummary.symbolColor)
-                Text( syncMonitor.syncStateSummary.isBroken ? "cloudkit is broken" : "cloudkit is good")
-                    .foregroundColor(textColor)
-            }
-            .padding()
-        }
-        .fixedSize(horizontal: false, vertical: true)
-        .cornerRadius(Constants.viewsCornerRaidus, corners: [.topLeft, .topRight, .bottomLeft, .bottomRight])
-    }
-    
     private var canDelete: some View {
         ZStack {
             theme.currentTheme.secondaryBGColor