add adv->setName(JOC Midi) and health check to restart advertising

src/ble_midi_transport.cpp

@@ -95,6 +95,7 @@ bool BleMidiTransport::begin() {
     NimBLEAdvertising* adv = NimBLEDevice::getAdvertising();
     adv->addServiceUUID(BLE_MIDI_SERVICE_UUID);
     adv->setScanResponse(true);
+    adv->setName("JOC Midi");
     adv->start();
 
     initialized = true;
@@ -104,6 +105,15 @@ bool BleMidiTransport::begin() {
 
 void BleMidiTransport::update() {
     client_connected = device_connected;
+    static unsigned long last_health = 0;
+    if (millis() - last_health > 30000) {
+        last_health = millis();
+        NimBLEAdvertising* adv = NimBLEDevice::getAdvertising();
+        if (adv && !adv->isAdvertising()) {
+            Serial.println("[BLE] Restarting advertising...");
+            adv->start();
+        }
+    }
 }
 
 void BleMidiTransport::on_midi_receive(std::function<void(const MidiEvent&)> callback) {