fix(mac): remove all sounds and make mac app operation 100% silent

mac/src/AppDelegate.swift

@@ -15,9 +15,8 @@ public final class AppDelegate: NSObject, NSApplicationDelegate {
     private var remoteListener: NWListener?
     
     public func applicationDidFinishLaunching(_ notification: Notification) {
-        if UserDefaults.standard.object(forKey: "SonioxPlaySounds") == nil {
-            UserDefaults.standard.set(true, forKey: "SonioxPlaySounds")
-        }
+        // Completely silent operation by default
+        UserDefaults.standard.set(false, forKey: "SonioxPlaySounds")
         
         statusBarController = StatusBarController()
         statusBarController.onToggleRecording = { [weak self] in
@@ -63,8 +62,7 @@ public final class AppDelegate: NSObject, NSApplicationDelegate {
         // Connect to Linux Persistent Gateway (via local tunnel 18999 -> 8999)
         RelayClient.shared.onRemoteUpdateReceived = { [weak self] text, cursor, isFullReplace in
             guard let self = self else { return }
-            print("AppDelegate: 📥 Clean Remote Input Update: '\(text.prefix(30))...' (replace: \(isFullReplace))")
-            self.playSystemSound(name: "Tink")
+            print("AppDelegate: 📥 Clean Remote Input Update (Silent): '\(text.prefix(30))...' (replace: \(isFullReplace))")
             HUDOverlayController.shared.show(state: .success(text: text))
             FocusedInputSync.shared.applyRemoteUpdate(text: text, cursor: cursor, isFullReplace: isFullReplace)
         }
@@ -115,7 +113,6 @@ public final class AppDelegate: NSObject, NSApplicationDelegate {
                        let text = json["text"] as? String {
                         
                         DispatchQueue.main.async {
-                            self.playSystemSound(name: "Tink")
                             FocusedInputSync.shared.applyRemoteUpdate(text: text, cursor: nil, isFullReplace: true)
                         }
                     }
@@ -152,7 +149,6 @@ public final class AppDelegate: NSObject, NSApplicationDelegate {
         guard !audioRecorder.isRecording, !isBusyFinalizing else { return }
         
         latestPartialText = nil
-        playSystemSound(name: "Blow")
         
         let session = SonioxSessionPool.shared.acquireSession()
         self.activeSession = session
@@ -171,7 +167,6 @@ public final class AppDelegate: NSObject, NSApplicationDelegate {
             
             switch result {
             case .success(let text):
-                self.playSystemSound(name: "Hero")
                 FocusedInputSync.shared.applyRemoteUpdate(text: text, cursor: nil, isFullReplace: false)
             case .failure(let error):
                 print("Soniox error:", error)
@@ -206,9 +201,4 @@ public final class AppDelegate: NSObject, NSApplicationDelegate {
         
         session.finalizeStream()
     }
-    
-    private func playSystemSound(name: String) {
-        guard UserDefaults.standard.bool(forKey: "SonioxPlaySounds") else { return }
-        NSSound(named: name)?.play()
-    }
 }