Implemented the Persisting the selected locale across launches on the ContentView view in the Sample app target.

Apps/Attendi/Sources/Views/ContentView.swift

@@ -8,7 +8,8 @@ import SwiftUI
 /// inside a navigation stack, and presents the transcribed text of every processed recording in a modal sheet of its own navigation stack.
 /// A toolbar menu picks the locale of the spoken language to transcribe, and every pick kicks off the preinstallation of the locale's speech
 /// model assets, whose download events surface as transient in-app notifications — banners wearing the `Notifying` target's label
-/// style — overlaying the feature just below the navigation bar.
+/// style — overlaying the feature just below the navigation bar. The picked locale persists across launches in the user defaults, and is
+/// restored — realigned to the supported locales — before the feature loads.
 ///
 /// The services attached to the feature, the transcription shown in the sheet, and the notifier owning the notifications live in the view's
 /// ``Model``; the view itself only renders it and forwards the feature's output, the picker's changes, and the sheet's dismissal. All
@@ -17,6 +18,10 @@ struct ContentView: View {
 
     // MARK: Properties
 
+    /// The identifier of the picked locale, persisted across launches.
+    @AppStorage(Constant.Key.locale)
+    private var localeIdentifier: String = ""
+
     /// The model that owns the attached services, the transcription presented in the modal sheet, and the notifier of the in-app
     /// notifications.
     @State
@@ -36,7 +41,8 @@ struct ContentView: View {
     // MARK: Body
 
     /// The content of the view: a navigation stack with the recording feature's view, attached to the model's services and expanded to fill
-    /// the available space, with a toolbar picker for the locale of the spoken language to transcribe, and a modal sheet presenting the
+    /// the available space, with a toolbar picker for the locale of the spoken language to transcribe — restored from the user defaults
+    /// before the model loads, and persisted back on every change — and a modal sheet presenting the
     /// transcribed text of every processed recording — or a content unavailable message when the transcription is empty — closable
     /// through its toolbar button or a swipe. The notifier's in-app notifications overlay the feature, stacking downward just below the
     /// navigation bar; each one slides in from the leading edge when posted and out again when its scheduled dismissal arrives, without
@@ -70,12 +76,16 @@ struct ContentView: View {
                 stackNotifications
             }
             .task {
-                await model.load()
+                await model.load(
+                    identifier: localeIdentifier
+                )
             }
             .onChange(
                 of: model.locale,
                 initial: false
             ) {
+                localeIdentifier = model.locale.identifier
+
                 model.preinstall()
             }
         }
@@ -211,6 +221,12 @@ private extension ContentView {
 
 /// The constant values used across the view.
 private enum Constant {
+    /// The key constants.
+    enum Key {
+        /// The user defaults key of the persisted locale identifier.
+        static let locale = "com.rock-n-code.app.attendi.sample.user-defaults.ket.selected-locale"
+    }
+
     /// The spacing constants.
     enum Spacing {
         /// The spacing between the elements of a stack.