feat: attach button with camera/gallery/files, atomic bundle send

Matthias Nott

2026-03-23 78f101ac853aeea5d17067bec4215e070fc71fed

 lib/services/mqtt_service.dart
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@@ -141,7 +141,8 @@
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       client.keepAlivePeriod = 30;
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       client.autoReconnect = false; // Don't auto-reconnect during trial — enable after success
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       client.connectTimeoutPeriod = timeout;
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-      client.logging(on: true);
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+      // client.maxConnectionAttempts is final — can't set it
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+      client.logging(on: false);
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       client.onConnected = _onConnected;
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       client.onDisconnected = _onDisconnected;
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@@ -407,7 +408,6 @@
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     }
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     if (type == 'image' && sessionId != null) {
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-      // Image message
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       _publish('pailot/$sessionId/in', {
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         'msgId': _uuid(),
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         'type': 'image',
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@@ -420,6 +420,34 @@
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       return;
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     }
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+    if (type == 'bundle' && sessionId != null) {
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+      // Atomic multi-attachment message
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+      _publish('pailot/$sessionId/in', {
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+        'msgId': _uuid(),
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+        'type': 'bundle',
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+        'sessionId': sessionId,
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+        'caption': message['caption'] ?? '',
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+        if (message['audioBase64'] != null) 'audioBase64': message['audioBase64'],
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+        'attachments': message['attachments'] ?? [],
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+        'ts': _now(),
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+      }, MqttQos.atLeastOnce);
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+      return;
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+    }
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+
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+    if (type == 'file' && sessionId != null) {
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+      _publish('pailot/$sessionId/in', {
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+        'msgId': _uuid(),
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+        'type': 'file',
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+        'sessionId': sessionId,
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+        'fileBase64': message['fileBase64'] ?? '',
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+        'fileName': message['fileName'] ?? 'file',
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+        'mimeType': message['mimeType'] ?? 'application/octet-stream',
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+        'fileSize': message['fileSize'] ?? 0,
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+        'ts': _now(),
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+      }, MqttQos.atLeastOnce);
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+      return;
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+    }
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+
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     if (type == 'tts' && sessionId != null) {
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       // TTS request — route as command
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       _publish('pailot/control/in', {