Restructure @Dependency property and use BFS for DependencyManager

Package.swift

@@ -86,7 +86,7 @@ func swiftLintPlugin() -> [Target.PluginUsage] {
 
 func swiftLintPackage() -> [PackageDescription.Package.Dependency] {
     if ProcessInfo.processInfo.environment["SPEZI_DEVELOPMENT_SWIFTLINT"] != nil {
-        [.package(url: "https://github.com/realm/SwiftLint.git", .upToNextMinor(from: "0.55.1"))]
+        [.package(url: "https://github.com/realm/SwiftLint.git", from: "0.55.1")]
     } else {
         []
     }

Sources/Spezi/Capabilities/Lifecycle/LifecycleHandler.swift

@@ -44,6 +44,7 @@ public protocol LifecycleHandler {
                  to access launchOptions in a platform independent way.
                  """
     )
+    @MainActor
     func willFinishLaunchingWithOptions(_ application: UIApplication, launchOptions: [UIApplication.LaunchOptionsKey: Any])
 
     /// Replicates  the `sceneWillEnterForeground(_: UIScene)` functionality of the `UISceneDelegate`.
@@ -63,6 +64,7 @@ public protocol LifecycleHandler {
                  or other platform-specific mechanisms as a replacement.
                  """
     )
+    @MainActor
     func sceneWillEnterForeground(_ scene: UIScene)
 
     /// Replicates  the `sceneDidBecomeActive(_: UIScene)` functionality of the `UISceneDelegate`.
@@ -78,6 +80,7 @@ public protocol LifecycleHandler {
                   or other platform-specific mechanisms as a replacement.
                   """
     )
+    @MainActor
     func sceneDidBecomeActive(_ scene: UIScene)
 
     /// Replicates  the `sceneWillResignActive(_: UIScene)` functionality of the `UISceneDelegate`.
@@ -93,6 +96,7 @@ public protocol LifecycleHandler {
                   or other platform-specific mechanisms as a replacement.
                   """
     )
+    @MainActor
     func sceneWillResignActive(_ scene: UIScene)
 
     /// Replicates  the `sceneDidEnterBackground(_: UIScene)` functionality of the `UISceneDelegate`.
@@ -108,6 +112,7 @@ public protocol LifecycleHandler {
                   or other platform-specific mechanisms as a replacement.
                   """
     )
+    @MainActor
     func sceneDidEnterBackground(_ scene: UIScene)
 
     /// Replicates  the `applicationWillTerminate(_: UIApplication)` functionality of the `UIApplicationDelegate`.
@@ -123,6 +128,7 @@ public protocol LifecycleHandler {
                  or other platform-specific mechanisms as a replacement.
                  """
     )
+    @MainActor
     func applicationWillTerminate(_ application: UIApplication)
 #endif
 }

Sources/Spezi/Capabilities/Notifications/NotificationHandler.swift

@@ -22,6 +22,7 @@ public protocol NotificationHandler {
     /// - Note: Notification Actions are not supported on `tvOS`.
     ///
     /// - Parameter response: The user's response to the notification.
+    @MainActor
     func handleNotificationAction(_ response: UNNotificationResponse) async
 #endif
 
@@ -35,6 +36,7 @@ public protocol NotificationHandler {
     ///
     /// - Parameter notification: The notification that is about to be delivered.
     /// - Returns: The option for notifying the user. Use `[]` to silence the notification.
+    @MainActor
     func receiveIncomingNotification(_ notification: UNNotification) async -> UNNotificationPresentationOptions?
 
 #if !os(macOS)
@@ -51,6 +53,7 @@ public protocol NotificationHandler {
     ///
     /// - Parameter remoteNotification: The data of the notification payload.
     /// - Returns: Return the respective ``BackgroundFetchResult``.
+    @MainActor
     func receiveRemoteNotification(_ remoteNotification: [AnyHashable: Any]) async -> BackgroundFetchResult
 #else
     /// Handle remote notification when the app is running in background.
@@ -62,6 +65,7 @@ public protocol NotificationHandler {
     /// [`application(_:didReceiveRemoteNotification:)`](https://developer.apple.com/documentation/appkit/nsapplicationdelegate/1428430-application).
     ///
     /// - Parameter remoteNotification: The data of the notification payload.
+    @MainActor
     func receiveRemoteNotification(_ remoteNotification: [AnyHashable: Any])
 #endif
 }
@@ -70,21 +74,25 @@ public protocol NotificationHandler {
 extension NotificationHandler {
 #if !os(tvOS)
     /// Empty default implementation.
+    @MainActor
     public func handleNotificationAction(_ response: UNNotificationResponse) async {}
 #endif
 
     /// Empty default implementation.
+    @MainActor
     public func receiveIncomingNotification(_ notification: UNNotification) async -> UNNotificationPresentationOptions? {
         nil
     }
 
 #if !os(macOS)
     /// Empty default implementation.
+    @MainActor
     public func receiveRemoteNotification(_ remoteNotification: [AnyHashable: Any]) async -> BackgroundFetchResult {
         .noData
     }
 #else
     /// Empty default implementation.
+    @MainActor
     public func receiveRemoteNotification(_ remoteNotification: [AnyHashable: Any]) {}
 #endif
 }

Sources/Spezi/Capabilities/ViewModifier/ViewModifierProvider.swift

@@ -11,7 +11,9 @@ import SwiftUI
 
 
 enum ModifierPlacement: Int, Comparable {
+    /// No specific order requirement.
     case regular
+    /// Outermost placement (e.g., @Model-based property wrappers).
     case outermost
 
     static func < (lhs: ModifierPlacement, rhs: ModifierPlacement) -> Bool {