Pass desktop BLE identity to transport before startup

tools/chatgui/transport/desktop_ble.cpp

@@ -45,6 +45,10 @@ void DesktopBle::apply(int flags, const char* name) {
     }
     ble_config config{};
     config.node_id = m_nodeId; config.company_id = 0xffff; config.arg = this;
+    if (flags & 2) {
+        memcpy(config.initial_advertisement, bytes, size_t(length));
+        config.initial_advertisement_size = size_t(length);
+    }
     config.callbacks.status = [](void* arg, ble_state state, const char* reason) {
         auto* self = static_cast<DesktopBle*>(arg);
         self->m_snapshot.state = state; self->m_snapshot.reason = QString::fromUtf8(reason);