fix: include messageId in MQTT voice payload for transcript reflection

Matthias Nott

2026-03-22 4005325b654e83dcbd4305aabfe9ffcab713df08

 lib/services/mqtt_service.dart
..
..
@@ -388,6 +388,7 @@
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         'type': 'voice',
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         'sessionId': sessionId,
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         'audioBase64': message['audioBase64'] ?? '',
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+        'messageId': message['messageId'] ?? '',
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         'ts': _now(),
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       }, MqttQos.atLeastOnce);
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       return;