Fix: supressed alsa warnings

extra/stt.go

@@ -12,6 +12,7 @@ import (
 	"net/http"
 	"regexp"
 	"strings"
+	"syscall"
 
 	"github.com/gordonklaus/portaudio"
 )
@@ -145,6 +146,21 @@ func (stt *WhisperServer) IsRecording() bool {
 }
 
 func (stt *WhisperServer) microphoneStream(sampleRate int) error {
+	// Temporarily redirect stderr to suppress ALSA warnings during PortAudio init
+	origStderr, err := syscall.Dup(syscall.Stderr)
+	nullFD, err := syscall.Open("/dev/null", syscall.O_WRONLY, 0)
+	if err != nil {
+		return fmt.Errorf("failed to open /dev/null: %w", err)
+	}
+	// redirect stderr
+	syscall.Dup2(nullFD, syscall.Stderr)
+	// Initialize PortAudio (this is where ALSA warnings occur)
+	defer func() {
+		// Restore stderr
+		syscall.Dup2(origStderr, syscall.Stderr)
+		syscall.Close(origStderr)
+		syscall.Close(nullFD)
+	}()
 	if err := portaudio.Initialize(); err != nil {
 		return fmt.Errorf("portaudio init failed: %w", err)
 	}