feat: multi-platform bug fixes, Android audio path, and build tooling

Flutter UI fixes:
- Fix stale channel badge/speaker when moved by others (derive current
  channel from ownClientId instead of optimistic local state)
- Fix Linux PTT via focused fallback key handler
- Distinguish ServerQuery clients with terminal icon in client list
- Reduce duplicate current-channel badge display
- Prevent PTT key-bind save from permanently closing voice settings
- Fix Linux GTK reopen-after-close (quit app on window destroy)
- Fix focused PTT: consume key events, release held keys on
  disconnect/leave-channel/mode/backend changes, suppress stale errors

Flutter Rust bridge:
- Thread is_server_query flag through protocol→bridge→Dart
- Add own_client_id to BridgeSnapshot DTO
- Add log_file_path_str() for platform log path queries

Rust protocol:
- Add ServerQuery test coverage (query_client_type_maps_to_server_query_flag)
- Split reqwest TLS: native-tls for desktop/iOS, rustls for Android

Rust audio:
- Upgrade cpal 0.16→0.17.3 with API adjustments (SampleRate, description())
- Suppress Android-only dead-code warnings (open_log_file, keyring_account)

Android build tooling:
- tools/build-opus-android.sh: NDK auto-discovery, correct CMake
  Android variables (ANDROID_ABI, ANDROID_PLATFORM), portable baseline
- tools/build-android-rust.sh: build+copy Rust cdylib for arm64-v8a,
  armeabi-v7a, x86_64 into android/app/src/main/jniLibs/
- Add jniLibs/ to .gitignore

Rust bridge:
- Guard open_log_file() on non-Android (Android uses logcat)

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

@@ -338,14 +338,19 @@ class BridgeClient {
   /// Nickname.
   final String name;
 
+  /// True for TeamSpeak ServerQuery clients.
+  final bool isServerQuery;
+
   const BridgeClient({
     required this.id,
     required this.channel,
     required this.name,
+    required this.isServerQuery,
   });
 
   @override
-  int get hashCode => id.hashCode ^ channel.hashCode ^ name.hashCode;
+  int get hashCode =>
+      id.hashCode ^ channel.hashCode ^ name.hashCode ^ isServerQuery.hashCode;
 
   @override
   bool operator ==(Object other) =>
@@ -354,7 +359,8 @@ class BridgeClient {
           runtimeType == other.runtimeType &&
           id == other.id &&
           channel == other.channel &&
-          name == other.name;
+          name == other.name &&
+          isServerQuery == other.isServerQuery;
 }
 
 @freezed

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

@@ -1157,12 +1157,13 @@ class RustLibApiImpl extends RustLibApiImplPlatform implements RustLibApi {
   BridgeClient dco_decode_bridge_client(dynamic raw) {
     // Codec=Dco (DartCObject based), see doc to use other codecs
     final arr = raw as List<dynamic>;
-    if (arr.length != 3)
-      throw Exception('unexpected arr length: expect 3 but see ${arr.length}');
+    if (arr.length != 4)
+      throw Exception('unexpected arr length: expect 4 but see ${arr.length}');
     return BridgeClient(
       id: dco_decode_u_64(arr[0]),
       channel: dco_decode_u_64(arr[1]),
       name: dco_decode_String(arr[2]),
+      isServerQuery: dco_decode_bool(arr[3]),
     );
   }
 
@@ -1454,7 +1455,13 @@ class RustLibApiImpl extends RustLibApiImplPlatform implements RustLibApi {
     var var_id = sse_decode_u_64(deserializer);
     var var_channel = sse_decode_u_64(deserializer);
     var var_name = sse_decode_String(deserializer);
-    return BridgeClient(id: var_id, channel: var_channel, name: var_name);
+    var var_isServerQuery = sse_decode_bool(deserializer);
+    return BridgeClient(
+      id: var_id,
+      channel: var_channel,
+      name: var_name,
+      isServerQuery: var_isServerQuery,
+    );
   }
 
   @protected
@@ -1799,6 +1806,7 @@ class RustLibApiImpl extends RustLibApiImplPlatform implements RustLibApi {
     sse_encode_u_64(self.id, serializer);
     sse_encode_u_64(self.channel, serializer);
     sse_encode_String(self.name, serializer);
+    sse_encode_bool(self.isServerQuery, serializer);
   }
 
   @protected