Add voice notes: on-device transcription, multi-language, watch capture

- Schema v2: Note.AudioInfo, .m4a sidecar next to the note JSON in iCloud
- AudioRecorderService (iOS/macOS) + SpeechAnalyzer transcription pipeline
  with enabled-language set and confidence-based auto-pick, re-transcribe menu
- Settings > Transcription > Languages with asset download/reserve handling
- watchOS app + accessory complication: one-button recorder, WCSession
  transferFile to phone, WatchInbox staging, direct-upsert ingestion
- Player UI, transcription status chips, quick-capture mic in notes list
- Version 0.2, changelog + README updated

Notes/AppServices/AppServices.swift

@@ -11,6 +11,9 @@ final class AppServices {
     let syncEngine: SyncEngine
     let contextService: ContextService
     let backupController: BackupController
+    let audioRecorder: AudioRecorderService
+    let transcriptionSettings: TranscriptionSettings
+    let transcriptionService: TranscriptionService
 
     init() async {
         let container = NotesModelContainer.make()
@@ -21,6 +24,20 @@ final class AppServices {
         self.backupController = BackupController(
             configuration: NotesBackupConfiguration(syncEngine: engine)
         )
+        self.audioRecorder = AudioRecorderService()
+        let settings = TranscriptionSettings()
+        self.transcriptionSettings = settings
+        let transcription = TranscriptionService(
+            syncEngine: engine,
+            settings: settings,
+            modelContainer: container
+        )
+        self.transcriptionService = transcription
+
+        // A watch recording, once ingested, is this device's to transcribe.
+        engine.onAudioNoteIngested = { [weak transcription] id in
+            transcription?.enqueue(noteID: id)
+        }
     }
 
     /// The file extension this app owns for backup documents. Used to route
@@ -30,5 +47,12 @@ final class AppServices {
     /// Slow startup work (iCloud container discovery) — runs after the UI is up.
     func startDeferredServices() async {
         await syncEngine.connect()
+        // Drain any watch recordings delivered while the app was closed — the
+        // container is connected now, so they can be written and ingested.
+        await syncEngine.ingestStagedWatchRecordings()
+        // Load the supported languages / reservation cap, then pick up any of
+        // this device's notes that were still pending when it last quit.
+        await transcriptionSettings.prepare()
+        transcriptionService.resumePendingWork()
     }
 }