fix: use unique client ID for MQTT connection to avoid conflicts

src/bambu.cpp

@@ -553,13 +553,16 @@ void reconnect() {
         oledShowTopRow();
 
         // Attempt to connect
-        if (client.connect(bambu_serialnr, bambu_username, bambu_accesscode)) {
+        String clientId = String(bambu_serialnr) + "_" + String(random(0, 100));
+            if (client.connect(clientId.c_str(), bambu_username, bambu_accesscode)){
                 Serial.println("MQTT re/connected");
 
                 client.subscribe(report_topic.c_str());
                 bambu_connected = true;
                 oledShowTopRow();
-        } else {
+            }
+            else
+            {
                 Serial.print("failed, rc=");
                 Serial.print(client.state());
                 Serial.println(" try again in 5 seconds");
@@ -568,7 +571,8 @@ void reconnect() {
 
                 yield();
                 vTaskDelay(5000 / portTICK_PERIOD_MS);
-            if (retries > 5) {
+                if (retries > 5)
+                {
                     Serial.println("Disable Bambu MQTT Task after 5 retries");
                     // vTaskSuspend(BambuMqttTask);
                     vTaskDelete(BambuMqttTask);
@@ -619,7 +623,8 @@ bool setupMqtt() {
 
         // Verbinden mit dem MQTT-Server
         bool connected = true;
-        if (client.connect(bambu_serialnr, bambu_username, bambu_accesscode)) 
+        String clientId = String(bambu_serialnr) + "_" + String(random(0, 100));
+        if (client.connect(clientId.c_str(), bambu_username, bambu_accesscode))
             {
                 client.setCallback(mqtt_callback);
                 client.setBufferSize(5120);
@@ -649,7 +654,8 @@ bool setupMqtt() {
                 oledShowTopRow();
             }
 
-        if (!connected) return false;
+            if (!connected)
+                return false;
         }
     else 
     {