fix: voice transcript display, audio file persistence, debug logging

Matthias Nott

2026-03-22 fee149c1fbc63f52aa66148018e569e30cca6161

 lib/screens/chat_screen.dart
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@@ -34,6 +34,15 @@
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   ConsumerState<ChatScreen> createState() => _ChatScreenState();
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 }
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+Future<void> _chatLog(String msg) async {
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+  try {
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+    final dir = await getApplicationDocumentsDirectory();
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+    final file = File('${dir.path}/mqtt_debug.log');
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+    final ts = DateTime.now().toIso8601String().substring(11, 19);
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+    await file.writeAsString('[$ts] $msg\n', mode: FileMode.append);
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+  } catch (_) {}
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+}
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+
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 class _ChatScreenState extends ConsumerState<ChatScreen>
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     with WidgetsBindingObserver {
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   MqttService? _ws;
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@@ -307,7 +316,7 @@
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   Future<void> _handleIncomingVoice(Map<String, dynamic> msg) async {
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     final sessionId = msg['sessionId'] as String?;
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     final audioData = msg['audioBase64'] as String? ?? msg['audio'] as String? ?? msg['data'] as String?;
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-    final content = msg['content'] as String? ?? msg['text'] as String? ?? '';
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+    final content = msg['content'] as String? ?? msg['transcript'] as String? ?? msg['text'] as String? ?? '';
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     final duration = msg['duration'] as int?;
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     final message = Message(
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@@ -346,8 +355,11 @@
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     );
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     final activeId = ref.read(activeSessionIdProvider);
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+    _chatLog('voice: sessionId=$sessionId activeId=$activeId audioPath=$savedAudioPath content="${content.substring(0, content.length.clamp(0, 30))}"');
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     if (sessionId != null && sessionId != activeId) {
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+      _chatLog('voice: cross-session, storing for $sessionId');
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       await _storeForSession(sessionId, storedMessage);
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+      _chatLog('voice: stored, incrementing unread');
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       _incrementUnread(sessionId);
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       final sessions = ref.read(sessionsProvider);
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       final session = sessions.firstWhere(
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@@ -414,8 +426,12 @@
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   /// Store a message for a non-active session so it persists when the user switches to it.
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   Future<void> _storeForSession(String sessionId, Message message) async {
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     final existing = await MessageStore.loadAll(sessionId);
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+    _chatLog('storeForSession: $sessionId existing=${existing.length} adding type=${message.type.name} content="${message.content.substring(0, message.content.length.clamp(0, 30))}" audioUri=${message.audioUri != null ? "set(${message.audioUri!.length})" : "null"}');
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     MessageStore.save(sessionId, [...existing, message]);
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     await MessageStore.flush();
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+    // Verify
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+    final verify = await MessageStore.loadAll(sessionId);
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+    _chatLog('storeForSession: verified ${verify.length} messages after save');
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   }
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   void _incrementUnread(String sessionId) {