Increase wake check window default to 4s

Voxtral's audio encoder needs 1-2s to produce the first token.
With a 2s check window, short utterances like "hey torch" expired
before any transcription appeared, requiring the user to say the
keyword twice. Increase default to 4s and slider range to 2-8s.

Made-with: Cursor

Author: seyeong-han

voxtral_realtime/macos/VoxtralRealtime/Models/Preferences.swift

@@ -128,7 +128,7 @@ final class Preferences {
             let words = $0.lowercased().split(separator: " ")
             return words.count > 1 ? words.dropFirst().joined(separator: " ") : words.first.map(String.init)
         } ?? "torch"
-        self.wakeCheckSeconds = defaults.object(forKey: "wakeCheckSeconds") as? Double ?? 2.0
+        self.wakeCheckSeconds = defaults.object(forKey: "wakeCheckSeconds") as? Double ?? 4.0
 
         if !FileManager.default.fileExists(atPath: resolvedVadModelPath) {
             let probePaths = [

voxtral_realtime/macos/VoxtralRealtime/Views/WakeSettingsView.swift

@@ -59,7 +59,7 @@ struct WakeSettingsView: View {
 
                 LabeledContent("Check window") {
                     VStack(alignment: .trailing, spacing: 4) {
-                        Slider(value: $prefs.wakeCheckSeconds, in: 1.0...4.0, step: 0.5)
+                        Slider(value: $prefs.wakeCheckSeconds, in: 2.0...8.0, step: 0.5)
                             .frame(width: 200)
                         Text(String(format: "%.1f s", prefs.wakeCheckSeconds))
                             .font(.caption)