fix: MQTT schedule the reconnect timer before calling disconnect(), so by the time _on_broker_disconnected fires, the pending reconnect is already visible.

repeater/data_acquisition/letsmesh_handler.py

@@ -322,8 +322,9 @@ class _BrokerConnection:
         logger.info(f"JWT token expiring soon for {self.broker['name']}, refreshing...")
         self._running = False
         self._jwt_refresh_timer = None
-        self.client.disconnect()  # Triggers clean disconnect, then reconnect via timer
+
         self._schedule_reconnect(reason="JWT token expiry")
+        self.client.disconnect()
 
 
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