Process the microphone like TS3, and tell it about key presses

The capture path now runs the ported WebRTC chain in place of the
home-made noise, typing and gain stages, which are removed.

- As in TS3, the speech detector judges the raw microphone signal, while
  the level meter and volume gate see the processed one.
- Noise removal takes TS3's four levels (6, 12, 18 or 21 dB); a stored
  0..1 level falls back to TS3's default of 12 dB.
- Every key press from the global input hook reaches the connected
  microphones and the microphone test, so typing attenuation engages
  while the user types.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

ts3-client/swing/src/main/java/com/ts3client/ui/SettingsDialog.java

@@ -10,6 +10,7 @@ import com.ts3client.sound.SoundNotifier;
 import javax.swing.JButton;
 import javax.swing.JDialog;
 import javax.swing.JPanel;
+import javax.swing.SwingUtilities;
 import javax.swing.JTabbedPane;
 import java.awt.BorderLayout;
 import java.awt.Dimension;
@@ -83,11 +84,17 @@ public final class SettingsDialog extends JDialog {
         getContentPane().add(tabs, BorderLayout.CENTER);
         getContentPane().add(buttons, BorderLayout.SOUTH);
 
+        // The microphone test hears typing too, so typing attenuation can be tried out here.
+        Runnable testKeyPress = () -> SwingUtilities.invokeLater(
+                () -> voiceActivationPanel.configureTest(VoiceInput::keyPressed));
+        hotkeys.addKeyPressListener(testKeyPress);
+
         Dialogs.closeOnEscape(this, this::cancel);
         setDefaultCloseOperation(DISPOSE_ON_CLOSE);
         addWindowListener(new java.awt.event.WindowAdapter() {
             @Override
             public void windowClosed(java.awt.event.WindowEvent e) {
+                hotkeys.removeKeyPressListener(testKeyPress);
                 voiceActivationPanel.stopTest();
             }
         });