Fix some build warnings.

Account/Package.swift

@@ -2,15 +2,15 @@
 import PackageDescription
 
 let package = Package(
-    name: "Account",
+	name: "Account",
 	platforms: [.macOS(.v14), .iOS(.v17)],
-    products: [
-        .library(
-            name: "Account",
+	products: [
+		.library(
+			name: "Account",
 			type: .dynamic,
 			targets: ["Account"]),
-    ],
-    dependencies: [
+	],
+	dependencies: [
 		.package(url: "https://github.com/Ranchero-Software/RSParser.git", .upToNextMajor(from: "2.0.2")),
 		.package(url: "https://github.com/Ranchero-Software/RSWeb.git", .upToNextMajor(from: "1.0.0")),
 		.package(path: "../Articles"),
@@ -21,10 +21,10 @@ let package = Package(
 		.package(path: "../Core"),
 		.package(path: "../CloudKitExtras")
 	],
-    targets: [
-        .target(
-            name: "Account",
-            dependencies: [
+	targets: [
+		.target(
+			name: "Account",
+			dependencies: [
 				"RSParser",
 				"RSWeb",
 				"Articles",
@@ -34,12 +34,16 @@ let package = Package(
 				"Database",
 				"Core",
 				"CloudKitExtras"
-			]),
-        .testTarget(
-            name: "AccountTests",
-            dependencies: ["Account"],
+			],
+			swiftSettings: [
+				.enableExperimentalFeature("StrictConcurrency")
+			]
+		),
+		.testTarget(
+			name: "AccountTests",
+			dependencies: ["Account"],
 			resources: [
 				.copy("JSON"),
 			]),
-    ]
+	]
 )

Account/Sources/Account/Account.swift

@@ -409,10 +409,18 @@ public final class Account: DisplayNameProvider, UnreadCountProvider, Container,
 		grantingType.requestOAuthAccessToken(with: response, transport: transport, secretsProvider: secretsProvider, completion: completion)
 	}
 
-	public func receiveRemoteNotification(userInfo: [AnyHashable : Any], completion: @escaping () -> Void) {
+	private func receiveRemoteNotification(userInfo: [AnyHashable : Any], completion: @escaping () -> Void) {
 		delegate.receiveRemoteNotification(for: self, userInfo: userInfo, completion: completion)
 	}
 	
+	public func receiveRemoteNotification(userInfo: [AnyHashable: Any]) async {
+		await withCheckedContinuation { continuation in
+			self.receiveRemoteNotification(userInfo: userInfo) {
+				continuation.resume()
+			}
+		}
+	}
+
 	public func refreshAll(completion: @escaping (Result<Void, Error>) -> Void) {
 		delegate.refreshAll(for: self, completion: completion)
 	}

Account/Sources/Account/AccountManager.swift

@@ -216,18 +216,10 @@ public final class AccountManager: UnreadCountProvider {
 		accounts.forEach { $0.resume() }
 	}
 
-	public func receiveRemoteNotification(userInfo: [AnyHashable : Any], completion: (() -> Void)? = nil) {
-		let group = DispatchGroup()
-		
-		activeAccounts.forEach { account in
-			group.enter()
-			account.receiveRemoteNotification(userInfo: userInfo) { 
-				group.leave()
-			}
-		}
-		
-		group.notify(queue: DispatchQueue.main) {
-			completion?()
+	public func receiveRemoteNotification(userInfo: [AnyHashable : Any]) async {
+
+		for account in activeAccounts {
+			await account.receiveRemoteNotification(userInfo: userInfo)
 		}
 	}
 

Account/Sources/Account/CloudKit/CloudKitAccountDelegate.swift

@@ -42,7 +42,7 @@ final class CloudKitAccountDelegate: AccountDelegate {
 	private let accountZone: CloudKitAccountZone
 	private let articlesZone: CloudKitArticlesZone
 	
-	@MainActor private let mainThreadOperationQueue = MainThreadOperationQueue()
+	private let mainThreadOperationQueue = MainThreadOperationQueue()
 
 	private lazy var refresher: LocalAccountRefresher = {
 		let refresher = LocalAccountRefresher()

Account/Sources/Account/FeedMetadataFile.swift

@@ -10,9 +10,9 @@ import Foundation
 import os.log
 import Core
 
-final class FeedMetadataFile {
+@MainActor final class FeedMetadataFile {
 	
-	private var log = OSLog(subsystem: Bundle.main.bundleIdentifier!, category: "feedMetadataFile")
+	private let log = OSLog(subsystem: Bundle.main.bundleIdentifier!, category: "feedMetadataFile")
 
 	private let fileURL: URL
 	private let account: Account

Account/Sources/Account/Feedly/FeedlyAccountDelegate.swift

@@ -65,7 +65,7 @@ final class FeedlyAccountDelegate: AccountDelegate {
 	private let database: SyncDatabase
 	
 	private weak var currentSyncAllOperation: MainThreadOperation?
-	@MainActor private let operationQueue = MainThreadOperationQueue()
+	private let operationQueue = MainThreadOperationQueue()
 
 	init(dataFolder: String, transport: Transport?, api: FeedlyAPICaller.API, secretsProvider: SecretsProvider) {
 		// Many operations have their own operation queues, such as the sync all operation.

Mac/AppDelegate.swift

@@ -325,9 +325,12 @@ import Sparkle
 	}
 
 	func application(_ application: NSApplication, didReceiveRemoteNotification userInfo: [String : Any]) {
-		accountManager.receiveRemoteNotification(userInfo: userInfo)
+
+		Task { @MainActor in
+			await self.accountManager.receiveRemoteNotification(userInfo: userInfo)
+		}
 	}
-	
+
 	func application(_ sender: NSApplication, openFile filename: String) -> Bool {
 		guard filename.hasSuffix(ArticleTheme.nnwThemeSuffix) else { return false }
 		importTheme(filename: filename)