fix(ios-audio): activate session before voice joins (#38)

* fix(ios-audio): add voice join session coordinator

* fix(ios-audio): activate session before voice joins

* docs(ios-audio): align activation lifecycle comments

* fix(ios-audio): keep session active when already-in-channel

The 'already in channel' server response (code 0x0302) is treated as a
successful join by _onJoinChannel: the user stays in the channel and
local state is updated to reflect the joined target. But the underlying
voiceJoin call still raises BridgeError_ServerRejected, which the
joinVoiceChannelWithIosAudioSession helper used to interpret as a join
failure and deactivate the iOS audio session. Result: the UI shows the
user as joined while the audio session is dead and capture/playback
remain silent.

Add an isJoinSuccess predicate to the ordering helper. When the
predicate matches, the helper rethrows (so the caller can still run its
success-on-already-joined branch) without deactivating the session.
Wire _onJoinChannel to pass _isAlreadyInChannel as the predicate so the
0x0302 path keeps the session active.

Adds two regression tests covering the success-on-rethrow and the
predicate-false-still-deactivates paths.

* docs(security): regenerate license inventories

Cargo inventory: pick up chanora_resolver bump from 0.1.0 to
0.2.0-beta.1 so it matches the workspace; also adds a trailing newline
so 'cargo about generate' is idempotent in CI license-drift checks.

Flutter inventory: pick up flutter_local_notifications (+ platform
interfaces) and timezone pulled in by the prior notification
permission work.

apps/chanora_flutter/lib/main.dart

@@ -34,6 +34,7 @@ import 'services/prefetch_debouncer.dart';
 import 'services/snapshot_state_mapper.dart';
 import 'services/ts3_server_link.dart';
 import 'services/ui_preferences_service.dart';
+import 'services/voice_join_ordering.dart';
 import 'src/rust/api.dart' as rust;
 import 'src/rust/frb_generated.dart';
 import 'src/rust/lib.dart' as rust_err;
@@ -1301,7 +1302,18 @@ class _BetaHomeState extends State<_BetaHome> with WidgetsBindingObserver {
           });
         }
       }
-      await rust.voiceJoin(channelId: ch.id, password: password ?? '');
+      await joinVoiceChannelWithIosAudioSession(
+        channelId: ch.id,
+        password: password ?? '',
+        voiceJoin: rust.voiceJoin,
+        activateIosAudioSession: iosAudioSessionController.activate,
+        deactivateIosAudioSession: iosAudioSessionController.deactivate,
+        // Server says we are already in the target channel: the user is
+        // still joined to a voice channel, so the iOS audio session must
+        // stay active. The catch below converts this rethrow into the
+        // success-on-already-joined branch.
+        isJoinSuccess: _isAlreadyInChannel,
+      );
       if (!mounted) return;
       setState(() {
         _currentVoiceChannelId = ch.id;