feat: stabilize voice activity and audio routing

apps/chanora_flutter/lib/src/rust/api.dart

@@ -270,23 +270,19 @@ Future<BridgeAudioProcessingStats> audioProcessingStats() =>
 Future<BridgeAudioDeviceList> listAudioDevices() =>
     RustLib.instance.api.crateApiListAudioDevices();
 
-/// Set the preferred input device by name. Takes effect on next
+/// Set the preferred input device by id. Takes effect on next
 /// `start_audio`.
-Future<void> setInputDevice({String? name}) =>
-    RustLib.instance.api.crateApiSetInputDevice(name: name);
+Future<void> setInputDevice({String? id}) =>
+    RustLib.instance.api.crateApiSetInputDevice(id: id);
 
-/// Set the preferred output device by name.
-Future<void> setOutputDevice({String? name}) =>
-    RustLib.instance.api.crateApiSetOutputDevice(name: name);
+/// Set the preferred output device by id.
+Future<void> setOutputDevice({String? id}) =>
+    RustLib.instance.api.crateApiSetOutputDevice(id: id);
 
 /// Configure the VAD model path.
 Future<void> setVadModelPath({required String path}) =>
     RustLib.instance.api.crateApiSetVadModelPath(path: path);
 
-/// Configure the TEN VAD ONNX model path.
-Future<void> setTenVadModelPath({required String path}) =>
-    RustLib.instance.api.crateApiSetTenVadModelPath(path: path);
-
 /// Enable or disable audio debug WAV dumping.
 Future<void> enableAudioDebugWavDump({required bool enabled}) =>
     RustLib.instance.api.crateApiEnableAudioDebugWavDump(enabled: enabled);
@@ -321,24 +317,47 @@ enum BridgeAudioBackend {
 
 /// Audio device info from the platform.
 class BridgeAudioDevice {
+  /// Stable platform-reported device identifier.
+  final String id;
+
   /// Human-readable device name.
   final String name;
 
+  /// Additional device details useful for disambiguation.
+  final String details;
+
   /// True if the OS reports this as the default device.
   final bool isDefault;
 
-  const BridgeAudioDevice({required this.name, required this.isDefault});
+  /// True if Chanora currently has this device pinned.
+  final bool isSelected;
+
+  const BridgeAudioDevice({
+    required this.id,
+    required this.name,
+    required this.details,
+    required this.isDefault,
+    required this.isSelected,
+  });
 
   @override
-  int get hashCode => name.hashCode ^ isDefault.hashCode;
+  int get hashCode =>
+      id.hashCode ^
+      name.hashCode ^
+      details.hashCode ^
+      isDefault.hashCode ^
+      isSelected.hashCode;
 
   @override
   bool operator ==(Object other) =>
       identical(this, other) ||
       other is BridgeAudioDevice &&
           runtimeType == other.runtimeType &&
+          id == other.id &&
           name == other.name &&
-          isDefault == other.isDefault;
+          details == other.details &&
+          isDefault == other.isDefault &&
+          isSelected == other.isSelected;
 }
 
 /// List of available audio devices.
@@ -512,6 +531,21 @@ class BridgeAudioProcessingStats {
   /// Clipped samples.
   final BigInt clippedSamples;
 
+  /// Number of effectively silent processed capture frames.
+  final BigInt zeroFrames;
+
+  /// Number of processed capture frames.
+  final BigInt captureFrames;
+
+  /// Input callbacks carrying 10 ms of audio.
+  final BigInt callbacks10Ms;
+
+  /// Input callbacks carrying 20 ms of audio.
+  final BigInt callbacks20Ms;
+
+  /// Input callbacks carrying other sizes.
+  final BigInt callbacksOther;
+
   /// Sonora enabled.
   final bool sonoraEnabled;
 
@@ -536,6 +570,11 @@ class BridgeAudioProcessingStats {
     required this.outputUnderruns,
     required this.callbackXruns,
     required this.clippedSamples,
+    required this.zeroFrames,
+    required this.captureFrames,
+    required this.callbacks10Ms,
+    required this.callbacks20Ms,
+    required this.callbacksOther,
     required this.sonoraEnabled,
     required this.platformVoiceProcessingEnabled,
   });
@@ -559,6 +598,11 @@ class BridgeAudioProcessingStats {
       outputUnderruns.hashCode ^
       callbackXruns.hashCode ^
       clippedSamples.hashCode ^
+      zeroFrames.hashCode ^
+      captureFrames.hashCode ^
+      callbacks10Ms.hashCode ^
+      callbacks20Ms.hashCode ^
+      callbacksOther.hashCode ^
       sonoraEnabled.hashCode ^
       platformVoiceProcessingEnabled.hashCode;
 
@@ -584,6 +628,11 @@ class BridgeAudioProcessingStats {
           outputUnderruns == other.outputUnderruns &&
           callbackXruns == other.callbackXruns &&
           clippedSamples == other.clippedSamples &&
+          zeroFrames == other.zeroFrames &&
+          captureFrames == other.captureFrames &&
+          callbacks10Ms == other.callbacks10Ms &&
+          callbacks20Ms == other.callbacks20Ms &&
+          callbacksOther == other.callbacksOther &&
           sonoraEnabled == other.sonoraEnabled &&
           platformVoiceProcessingEnabled ==
               other.platformVoiceProcessingEnabled;
@@ -976,6 +1025,12 @@ sealed class BridgeEvent with _$BridgeEvent {
     required BridgeMessageTarget target,
   }) = BridgeEvent_ChatMessage;
 
+  /// Human-readable server activity surfaced from protocol bookkeeping events.
+  const factory BridgeEvent.serverActivity({
+    /// TeamSpeak-style activity line.
+    required String message,
+  }) = BridgeEvent_ServerActivity;
+
   /// Audio route changed (speaker/earpiece/BT/wired).
   const factory BridgeEvent.audioRouteChanged({
     /// The new audio route.
@@ -1169,9 +1224,6 @@ enum BridgeVadBackend {
   /// Silero ONNX VAD.
   sileroOnnx,
 
-  /// TEN VAD.
-  tenVad,
-
   /// WebRTC fallback VAD.
   webrtcVad,