feat: Adjust VAD sensitivity, enable global auto-stop, update docs

src-tauri/src/audio_processor.rs

@@ -159,10 +159,10 @@ impl AudioProcessor {
             let sq_sum: f32 = vad_chunk.iter().map(|x| x * x).sum();
             let rms = (sq_sum / vad_chunk.len() as f32).sqrt();
 
-            // Hybrid VAD: Probability > 0.8 OR RMS > 0.015
-            // INCREASED THRESHOLDS (v1.9.0): 
-            // Now that routing works, we must filter out system notifications (beeps) and noise floor.
-            let is_speech = probability > 0.8 || rms > 0.015; 
+            // Hybrid VAD: Probability > 0.9 OR RMS > 0.025
+            // INCREASED THRESHOLDS (v1.1.1): 
+            // Reduced sensitivity to avoid background noise triggering recording.
+            let is_speech = probability > 0.9 || rms > 0.025; 
 
             if is_speech {
                 self.is_speech_active = true;