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/NotesApp.swift

@@ -4,6 +4,9 @@ import SwiftUI
 
 @main
 struct NotesApp: App {
+    #if os(iOS)
+    @UIApplicationDelegateAdaptor(AppDelegate.self) private var appDelegate
+    #endif
     @State private var appServices: AppServices?
     @State private var pendingBackupURL: URL?
     @Environment(\.scenePhase) private var scenePhase
@@ -16,6 +19,9 @@ struct NotesApp: App {
                         .modelContainer(appServices.modelContainer)
                         .environment(appServices.syncEngine)
                         .environment(appServices.contextService)
+                        .environment(appServices.audioRecorder)
+                        .environment(appServices.transcriptionSettings)
+                        .environment(appServices.transcriptionService)
                         .environmentObject(appServices.backupController)
                 } else {
                     ProgressView()
@@ -25,6 +31,11 @@ struct NotesApp: App {
                 if appServices == nil {
                     let services = await AppServices()
                     appServices = services
+                    #if os(iOS)
+                    // Hand the (already-activated) watch receiver the live sync
+                    // engine so a delivery arriving now drains immediately.
+                    appDelegate.watchReceiver.syncEngine = services.syncEngine
+                    #endif
                     await services.startDeferredServices()
                     if let pending = pendingBackupURL {
                         pendingBackupURL = nil
@@ -58,6 +69,9 @@ struct NotesApp: App {
                         // file swap would import a half-restored state.
                         if !appServices.backupController.isRestoring {
                             await syncEngine.reconcile()
+                            // Ingest any watch recordings staged since we last
+                            // looked (delivered while backgrounded).
+                            await syncEngine.ingestStagedWatchRecordings()
                         }
                     case .checking:
                         break