Implemented the pre-installation of speech model assets for the selected locale for the ContentViewModel view model in the Sample app target.

Apps/Attendi/View Models/ContentViewModel.swift

@@ -62,6 +62,32 @@ extension ContentView {
             }
         }
         
+        /// Preinstalls the speech model assets for the supported equivalent of ``locale``, so the first transcription in that locale
+        /// does not have to download them mid-processing.
+        ///
+        /// Failures are ignored on purpose: the transcribing service installs any missing assets itself as a fallback when a
+        /// transcription starts.
+        func preinstallAssets() async {
+            guard let locale = await SpeechTranscriber.supportedLocale(
+                equivalentTo: locale
+            ) else {
+                return
+            }
+
+            let transcriber = SpeechTranscriber(
+                locale: locale,
+                preset: .transcription
+            )
+
+            guard let request = try? await AssetInventory.assetInstallationRequest(
+                supporting: [transcriber]
+            ) else {
+                return
+            }
+
+            try? await request.downloadAndInstall()
+        }
+
         /// Returns the localized name of a locale for the locale picker.
         ///
         /// - Parameter locale: The locale to name.

Apps/Attendi/Views/ContentView.swift

@@ -61,6 +61,9 @@ struct ContentView: View {
             .task {
                 await model.load()
             }
+            .task(id: model.locale) {
+                await model.preinstallAssets()
+            }
         }
         .sheet(item: $model.transcription) { transcription in
             NavigationStack {