webmotor

Add device status tracking: show ESP connection status in cloud frontend

Fix Core 0 crash: use pollHttp_ instead of http_, add mutex protection, increase stack to 16KB, add null checks

Add include/version.h to .gitignore to prevent tracking of version header file

Remove auto-generated version header file

Implement multi-threaded cloud polling: use FreeRTOS task on Core 0 for non-blocking long polls