Swift 6 / Concurrency fixes (#578)

* Enable language mode

* WIP

* WIP

* Fix concurrency issues in SmartCardStore

* Switch to SMAppService

* Bump runners

* Base

* Finish Testing migration

* Tweak async for updater

* More

* Backport mutex

* Revert "Backport mutex"

This reverts commit 9b02afb20c.

* WIP

* Reenable

* Fix preview.

* Update package.

* Bump to latest public macOS and Xcode

* Bump back down to 6.1

* Update to Xcode 26.

* Fixed tests.

* More cleanup

* Env fixes

* var->let

* Cleanup

* Persist auth async

* Whitespace.

* Whitespace.

* Cleanup.

* Cleanup

* Redoing locks in actors bc of observable

* Actors.

* .

* Specify b5

* Update package to 6.2

* Fix disabled updater

* Remove preconcurrency warning

* Move updater init

Sources/Secretive/Preview Content/PreviewAgentStatusChecker.swift

@@ -10,4 +10,7 @@ class PreviewAgentStatusChecker: AgentStatusCheckerProtocol {
         self.running = running
     }
 
+    func check() {
+    }
+
 }

Sources/Secretive/Preview Content/PreviewStore.swift

@@ -20,20 +20,20 @@ extension Preview {
 
 extension Preview {
 
-    class Store: SecretStore, ObservableObject {
+    @Observable final class Store: SecretStore {
 
         let isAvailable = true
         let id = UUID()
         var name: String { "Preview Store" }
-        @Published var secrets: [Secret] = []
+        let secrets: [Secret]
 
         init(secrets: [Secret]) {
-            self.secrets.append(contentsOf: secrets)
+            self.secrets = secrets
         }
 
-        init(numberOfRandomSecrets: Int = 5) {
+        convenience init(numberOfRandomSecrets: Int = 5) {
             let new = (0..<numberOfRandomSecrets).map { Secret(name: String(describing: $0)) }
-            self.secrets.append(contentsOf: new)
+            self.init(secrets: new)
         }
 
         func sign(data: Data, with secret: Preview.Secret, for provenance: SigningRequestProvenance) throws -> Data {
@@ -56,8 +56,40 @@ extension Preview {
 
     }
 
-    class StoreModifiable: Store, SecretStoreModifiable {
-        override var name: String { "Modifiable Preview Store" }
+    final class StoreModifiable: SecretStoreModifiable {
+        
+        let isAvailable = true
+        let id = UUID()
+        var name: String { "Modifiable Preview Store" }
+        let secrets: [Secret]
+
+        init(secrets: [Secret]) {
+            self.secrets = secrets
+        }
+
+        convenience init(numberOfRandomSecrets: Int = 5) {
+            let new = (0..<numberOfRandomSecrets).map { Secret(name: String(describing: $0)) }
+            self.init(secrets: new)
+        }
+
+        func sign(data: Data, with secret: Preview.Secret, for provenance: SigningRequestProvenance) throws -> Data {
+            return data
+        }
+
+        func verify(signature data: Data, for signature: Data, with secret: Preview.Secret) throws -> Bool {
+            true
+        }
+
+        func existingPersistedAuthenticationContext(secret: Preview.Secret) -> PersistedAuthenticationContext? {
+            nil
+        }
+
+        func persistAuthentication(secret: Preview.Secret, forDuration duration: TimeInterval) throws {
+        }
+
+        func reloadSecrets() {
+        }
+
 
         func create(name: String, requiresAuthentication: Bool) throws {
         }
@@ -72,7 +104,7 @@ extension Preview {
 
 extension Preview {
 
-    static func storeList(stores: [Store] = [], modifiableStores: [StoreModifiable] = []) -> SecretStoreList {
+    @MainActor static func storeList(stores: [Store] = [], modifiableStores: [StoreModifiable] = []) -> SecretStoreList {
         let list = SecretStoreList()
         for store in stores {
             list.add(store: store)

Sources/Secretive/Preview Content/PreviewUpdater.swift

@@ -1,10 +1,11 @@
 import Foundation
-import Combine
+import Observation
 import Brief
 
-class PreviewUpdater: UpdaterProtocol {
+@Observable @MainActor final class PreviewUpdater: UpdaterProtocol {
+
+    var update: Release? = nil
 
-    let update: Release?
     let testBuild = false
 
     init(update: Update = .none) {
@@ -18,6 +19,9 @@ class PreviewUpdater: UpdaterProtocol {
         }
     }
 
+    func ignore(release: Release) async {
+    }
+    
 }
 
 extension PreviewUpdater {