Fix a handful of strict concurrency warnings

Packages/PushNotifications/Sources/PushNotifications/PushSubscription.swift

@@ -53,7 +53,7 @@ public struct PushSubscription {
         self.policy = policy
     }
 
-    public enum Policy: String, CaseIterable, Identifiable {
+    public enum Policy: String, CaseIterable, Identifiable, Sendable {
         case all, followed, followers
         
         public var id: some Hashable {
@@ -61,7 +61,7 @@ public struct PushSubscription {
         }
     }
     
-    public struct Alerts: OptionSet, Hashable {
+    public struct Alerts: OptionSet, Hashable, Sendable {
         public static let mention = Alerts(rawValue: 1 << 0)
         public static let status = Alerts(rawValue: 1 << 1)
         public static let reblog = Alerts(rawValue: 1 << 2)

Packages/TuskerPreferences/Sources/TuskerPreferences/Preferences.swift

@@ -8,6 +8,7 @@
 import Foundation
 
 public struct Preferences {
+    @MainActor
     public static let shared: PreferenceStore = load()
     
     private static var documentsDirectory = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
@@ -18,6 +19,7 @@ public struct Preferences {
 
     private init() {}
     
+    @MainActor
     public static func save() {
         let encoder = PropertyListEncoder()
         let data = try? encoder.encode(PreferenceCoding(wrapped: shared))

Packages/TuskerPreferences/Sources/TuskerPreferences/Supporting Types/PostVisibility.swift

@@ -12,7 +12,7 @@ public enum PostVisibility: Codable, Hashable, CaseIterable, Sendable {
     case serverDefault
     case visibility(Visibility)
     
-    public static var allCases: [PostVisibility] = [.serverDefault] + Visibility.allCases.map { .visibility($0) }
+    public private(set) static var allCases: [PostVisibility] = [.serverDefault] + Visibility.allCases.map { .visibility($0) }
     
     public func resolved(withServerDefault serverDefault: Visibility?) -> Visibility {
         switch self {
@@ -57,7 +57,7 @@ public enum ReplyVisibility: Codable, Hashable, CaseIterable {
     case sameAsPost
     case visibility(Visibility)
     
-    public static var allCases: [ReplyVisibility] = [.sameAsPost] + Visibility.allCases.map { .visibility($0) }
+    public private(set) static var allCases: [ReplyVisibility] = [.sameAsPost] + Visibility.allCases.map { .visibility($0) }
     
     @MainActor
     public func resolved(withServerDefault serverDefault: Visibility?) -> Visibility {

Packages/UserAccounts/Sources/UserAccounts/UserAccountsManager.swift

@@ -8,7 +8,8 @@
 import Foundation
 import Combine
 
-public class UserAccountsManager: ObservableObject {
+// Sendability: UserDefaults is not marked Sendable, but is documented as being thread safe
+public final class UserAccountsManager: ObservableObject, @unchecked Sendable {
     
     public static let shared = UserAccountsManager()
     

Tusker/API/LogoutService.swift

@@ -23,10 +23,10 @@ class LogoutService {
     
     func run() {
         let accountInfo = self.accountInfo
-        Task.detached {
+        Task.detached { @MainActor in
-            if await PushManager.shared.pushSubscription(account: accountInfo) != nil {
+            if PushManager.shared.pushSubscription(account: accountInfo) != nil {
                 _ = try? await self.mastodonController.run(Pachyderm.PushSubscription.delete())
-                await PushManager.shared.removeSubscription(account: accountInfo)
+                PushManager.shared.removeSubscription(account: accountInfo)
             }
             try? await self.mastodonController.client.revokeAccessToken()
         }

Tusker/Screens/Preferences/About/FlipView.swift

@@ -107,7 +107,7 @@ struct FlipEffect: GeometryEffect {
 }
 
 private struct WidthPrefKey: PreferenceKey {
-    static var defaultValue: CGFloat = 0
+    static let defaultValue: CGFloat = 0
     
     static func reduce(value: inout CGFloat, nextValue: () -> CGFloat) {
         value = nextValue()

Tusker/Screens/Preferences/AcknowledgementsView.swift

@@ -292,7 +292,7 @@ private extension AttributeScopes {
 private enum HeadingLevelAttributes: CodableAttributedStringKey, MarkdownDecodableAttributedStringKey {
     public typealias Value = Int
 
-    public static var name = "headingLevel"
+    public static let name = "headingLevel"
 }
 
 private extension AttributeDynamicLookup {

Tusker/Screens/Preferences/Tip Jar/ConfettiView.swift

@@ -59,7 +59,7 @@ struct ConfettiView: View {
 }
 
 private struct SizeKey: PreferenceKey {
-    static var defaultValue: CGSize = .zero
+    static let defaultValue: CGSize = .zero
     static func reduce(value: inout CGSize, nextValue: () -> CGSize) {
         value = nextValue()
     }

Tusker/Screens/Preferences/Tip Jar/TipJarView.swift

@@ -44,7 +44,7 @@ struct TipJarView: View {
             Text(error.localizedDescription)
         })
         .task {
-            updatesObserver = Task.detached {
+            updatesObserver = Task.detached { @MainActor in
                 await observeTransactionUpdates()
             }
             do {
@@ -95,6 +95,7 @@ struct TipJarView: View {
         }
     }
     
+    @MainActor
     private func observeTransactionUpdates() async {
         for await verificationResult in StoreKit.Transaction.updates {
             guard let index = products.firstIndex(where: { $0.0.id == verificationResult.unsafePayloadValue.productID }) else {
@@ -175,6 +176,7 @@ private struct TipRow: View {
         }
     }
     
+    @MainActor
     private func purchase() async {
         isPurchasing = true
         let result: Product.PurchaseResult
@@ -229,7 +231,7 @@ extension HorizontalAlignment {
 }
 
 private struct ButtonWidthKey: PreferenceKey {
-    static var defaultValue: CGFloat = 0
+    static let defaultValue: CGFloat = 0
     static func reduce(value: inout CGFloat, nextValue: () -> CGFloat) {
         value = max(value, nextValue())
     }